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-rw-r--r--system/test-kernel/0130-lrng.patch28362
1 files changed, 28362 insertions, 0 deletions
diff --git a/system/test-kernel/0130-lrng.patch b/system/test-kernel/0130-lrng.patch
new file mode 100644
index 000000000..89d06d84c
--- /dev/null
+++ b/system/test-kernel/0130-lrng.patch
@@ -0,0 +1,28362 @@
+diff -urN linux-5.15/MAINTAINERS linux-5.15-lrng/MAINTAINERS
+--- linux-5.15/MAINTAINERS 2021-11-01 07:53:10.000000000 +1100
++++ linux-5.15-lrng/MAINTAINERS 2021-11-29 12:36:52.113279174 +1100
+@@ -10830,6 +10830,13 @@
+ F: Documentation/memory-barriers.txt
+ F: tools/memory-model/
+
++LINUX RANDOM NUMBER GENERATOR (LRNG) DRIVER
++M: Stephan Mueller <smueller@chronox.de>
++S: Maintained
++W: https://www.chronox.de/lrng.html
++F: drivers/char/lrng/*
++F: include/linux/lrng.h
++
+ LIS3LV02D ACCELEROMETER DRIVER
+ M: Eric Piel <eric.piel@tremplin-utc.net>
+ S: Maintained
+diff -urN linux-5.15/MAINTAINERS.orig linux-5.15-lrng/MAINTAINERS.orig
+--- linux-5.15/MAINTAINERS.orig 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/MAINTAINERS.orig 2021-11-29 12:32:21.653280206 +1100
+@@ -0,0 +1,20816 @@
++List of maintainers and how to submit kernel changes
++====================================================
++
++Please try to follow the guidelines below. This will make things
++easier on the maintainers. Not all of these guidelines matter for every
++trivial patch so apply some common sense.
++
++Tips for patch submitters
++-------------------------
++
++1. Always *test* your changes, however small, on at least 4 or
++ 5 people, preferably many more.
++
++2. Try to release a few ALPHA test versions to the net. Announce
++ them onto the kernel channel and await results. This is especially
++ important for device drivers, because often that's the only way
++ you will find things like the fact version 3 firmware needs
++ a magic fix you didn't know about, or some clown changed the
++ chips on a board and not its name. (Don't laugh! Look at the
++ SMC etherpower for that.)
++
++3. Make sure your changes compile correctly in multiple
++ configurations. In particular check that changes work both as a
++ module and built into the kernel.
++
++4. When you are happy with a change make it generally available for
++ testing and await feedback.
++
++5. Make a patch available to the relevant maintainer in the list. Use
++ ``diff -u`` to make the patch easy to merge. Be prepared to get your
++ changes sent back with seemingly silly requests about formatting
++ and variable names. These aren't as silly as they seem. One
++ job the maintainers (and especially Linus) do is to keep things
++ looking the same. Sometimes this means that the clever hack in
++ your driver to get around a problem actually needs to become a
++ generalized kernel feature ready for next time.
++
++ PLEASE check your patch with the automated style checker
++ (scripts/checkpatch.pl) to catch trivial style violations.
++ See Documentation/process/coding-style.rst for guidance here.
++
++ PLEASE CC: the maintainers and mailing lists that are generated
++ by ``scripts/get_maintainer.pl.`` The results returned by the
++ script will be best if you have git installed and are making
++ your changes in a branch derived from Linus' latest git tree.
++ See Documentation/process/submitting-patches.rst for details.
++
++ PLEASE try to include any credit lines you want added with the
++ patch. It avoids people being missed off by mistake and makes
++ it easier to know who wants adding and who doesn't.
++
++ PLEASE document known bugs. If it doesn't work for everything
++ or does something very odd once a month document it.
++
++ PLEASE remember that submissions must be made under the terms
++ of the Linux Foundation certificate of contribution and should
++ include a Signed-off-by: line. The current version of this
++ "Developer's Certificate of Origin" (DCO) is listed in the file
++ Documentation/process/submitting-patches.rst.
++
++6. Make sure you have the right to send any changes you make. If you
++ do changes at work you may find your employer owns the patch
++ not you.
++
++7. When sending security related changes or reports to a maintainer
++ please Cc: security@kernel.org, especially if the maintainer
++ does not respond. Please keep in mind that the security team is
++ a small set of people who can be efficient only when working on
++ verified bugs. Please only Cc: this list when you have identified
++ that the bug would present a short-term risk to other users if it
++ were publicly disclosed. For example, reports of address leaks do
++ not represent an immediate threat and are better handled publicly,
++ and ideally, should come with a patch proposal. Please do not send
++ automated reports to this list either. Such bugs will be handled
++ better and faster in the usual public places. See
++ Documentation/admin-guide/security-bugs.rst for details.
++
++8. Happy hacking.
++
++Descriptions of section entries and preferred order
++---------------------------------------------------
++
++ M: *Mail* patches to: FullName <address@domain>
++ R: Designated *Reviewer*: FullName <address@domain>
++ These reviewers should be CCed on patches.
++ L: *Mailing list* that is relevant to this area
++ S: *Status*, one of the following:
++ Supported: Someone is actually paid to look after this.
++ Maintained: Someone actually looks after it.
++ Odd Fixes: It has a maintainer but they don't have time to do
++ much other than throw the odd patch in. See below..
++ Orphan: No current maintainer [but maybe you could take the
++ role as you write your new code].
++ Obsolete: Old code. Something tagged obsolete generally means
++ it has been replaced by a better system and you
++ should be using that.
++ W: *Web-page* with status/info
++ Q: *Patchwork* web based patch tracking system site
++ B: URI for where to file *bugs*. A web-page with detailed bug
++ filing info, a direct bug tracker link, or a mailto: URI.
++ C: URI for *chat* protocol, server and channel where developers
++ usually hang out, for example irc://server/channel.
++ P: Subsystem Profile document for more details submitting
++ patches to the given subsystem. This is either an in-tree file,
++ or a URI. See Documentation/maintainer/maintainer-entry-profile.rst
++ for details.
++ T: *SCM* tree type and location.
++ Type is one of: git, hg, quilt, stgit, topgit
++ F: *Files* and directories wildcard patterns.
++ A trailing slash includes all files and subdirectory files.
++ F: drivers/net/ all files in and below drivers/net
++ F: drivers/net/* all files in drivers/net, but not below
++ F: */net/* all files in "any top level directory"/net
++ One pattern per line. Multiple F: lines acceptable.
++ X: *Excluded* files and directories that are NOT maintained, same
++ rules as F:. Files exclusions are tested before file matches.
++ Can be useful for excluding a specific subdirectory, for instance:
++ F: net/
++ X: net/ipv6/
++ matches all files in and below net excluding net/ipv6/
++ N: Files and directories *Regex* patterns.
++ N: [^a-z]tegra all files whose path contains tegra
++ (not including files like integrator)
++ One pattern per line. Multiple N: lines acceptable.
++ scripts/get_maintainer.pl has different behavior for files that
++ match F: pattern and matches of N: patterns. By default,
++ get_maintainer will not look at git log history when an F: pattern
++ match occurs. When an N: match occurs, git log history is used
++ to also notify the people that have git commit signatures.
++ K: *Content regex* (perl extended) pattern match in a patch or file.
++ For instance:
++ K: of_get_profile
++ matches patches or files that contain "of_get_profile"
++ K: \b(printk|pr_(info|err))\b
++ matches patches or files that contain one or more of the words
++ printk, pr_info or pr_err
++ One regex pattern per line. Multiple K: lines acceptable.
++
++Maintainers List
++----------------
++
++.. note:: When reading this list, please look for the most precise areas
++ first. When adding to this list, please keep the entries in
++ alphabetical order.
++
++3C59X NETWORK DRIVER
++M: Steffen Klassert <klassert@kernel.org>
++L: netdev@vger.kernel.org
++S: Odd Fixes
++F: Documentation/networking/device_drivers/ethernet/3com/vortex.rst
++F: drivers/net/ethernet/3com/3c59x.c
++
++3CR990 NETWORK DRIVER
++M: David Dillow <dave@thedillows.org>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/3com/typhoon*
++
++3WARE SAS/SATA-RAID SCSI DRIVERS (3W-XXXX, 3W-9XXX, 3W-SAS)
++M: Adam Radford <aradford@gmail.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++W: http://www.lsi.com
++F: drivers/scsi/3w-*
++
++53C700 AND 53C700-66 SCSI DRIVER
++M: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
++L: linux-scsi@vger.kernel.org
++S: Maintained
++F: drivers/scsi/53c700*
++
++6LOWPAN GENERIC (BTLE/IEEE 802.15.4)
++M: Alexander Aring <alex.aring@gmail.com>
++M: Jukka Rissanen <jukka.rissanen@linux.intel.com>
++L: linux-bluetooth@vger.kernel.org
++L: linux-wpan@vger.kernel.org
++S: Maintained
++F: Documentation/networking/6lowpan.rst
++F: include/net/6lowpan.h
++F: net/6lowpan/
++
++6PACK NETWORK DRIVER FOR AX.25
++M: Andreas Koensgen <ajk@comnets.uni-bremen.de>
++L: linux-hams@vger.kernel.org
++S: Maintained
++F: drivers/net/hamradio/6pack.c
++
++802.11 (including CFG80211/NL80211)
++M: Johannes Berg <johannes@sipsolutions.net>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++W: https://wireless.wiki.kernel.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git
++F: Documentation/driver-api/80211/cfg80211.rst
++F: Documentation/networking/regulatory.rst
++F: include/linux/ieee80211.h
++F: include/net/cfg80211.h
++F: include/net/ieee80211_radiotap.h
++F: include/net/iw_handler.h
++F: include/net/wext.h
++F: include/uapi/linux/nl80211.h
++F: net/wireless/
++
++8169 10/100/1000 GIGABIT ETHERNET DRIVER
++M: Heiner Kallweit <hkallweit1@gmail.com>
++M: nic_swsd@realtek.com
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/realtek/r8169*
++
++8250/16?50 (AND CLONE UARTS) SERIAL DRIVER
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++L: linux-serial@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git
++F: drivers/tty/serial/8250*
++F: include/linux/serial_8250.h
++
++8390 NETWORK DRIVERS [WD80x3/SMC-ELITE, SMC-ULTRA, NE2000, 3C503, etc.]
++L: netdev@vger.kernel.org
++S: Orphan / Obsolete
++F: drivers/net/ethernet/8390/
++
++9P FILE SYSTEM
++M: Eric Van Hensbergen <ericvh@gmail.com>
++M: Latchesar Ionkov <lucho@ionkov.net>
++M: Dominique Martinet <asmadeus@codewreck.org>
++L: v9fs-developer@lists.sourceforge.net
++S: Maintained
++W: http://swik.net/v9fs
++Q: http://patchwork.kernel.org/project/v9fs-devel/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs.git
++T: git git://github.com/martinetd/linux.git
++F: Documentation/filesystems/9p.rst
++F: fs/9p/
++F: include/net/9p/
++F: include/trace/events/9p.h
++F: include/uapi/linux/virtio_9p.h
++F: net/9p/
++
++A8293 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/dvb-frontends/a8293*
++
++AACRAID SCSI RAID DRIVER
++M: Adaptec OEM Raid Solutions <aacraid@microsemi.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++W: http://www.adaptec.com/
++F: Documentation/scsi/aacraid.rst
++F: drivers/scsi/aacraid/
++
++ABI/API
++L: linux-api@vger.kernel.org
++F: include/linux/syscalls.h
++F: kernel/sys_ni.c
++X: include/uapi/
++X: arch/*/include/uapi/
++
++ABIT UGURU 1,2 HARDWARE MONITOR DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: drivers/hwmon/abituguru.c
++
++ABIT UGURU 3 HARDWARE MONITOR DRIVER
++M: Alistair John Strachan <alistair@devzero.co.uk>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: drivers/hwmon/abituguru3.c
++
++ACCES 104-DIO-48E GPIO DRIVER
++M: William Breathitt Gray <vilhelm.gray@gmail.com>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: drivers/gpio/gpio-104-dio-48e.c
++
++ACCES 104-IDI-48 GPIO DRIVER
++M: "William Breathitt Gray" <vilhelm.gray@gmail.com>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: drivers/gpio/gpio-104-idi-48.c
++
++ACCES 104-IDIO-16 GPIO DRIVER
++M: "William Breathitt Gray" <vilhelm.gray@gmail.com>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: drivers/gpio/gpio-104-idio-16.c
++
++ACCES 104-QUAD-8 DRIVER
++M: William Breathitt Gray <vilhelm.gray@gmail.com>
++M: Syed Nayyar Waris <syednwaris@gmail.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: drivers/counter/104-quad-8.c
++
++ACCES PCI-IDIO-16 GPIO DRIVER
++M: William Breathitt Gray <vilhelm.gray@gmail.com>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: drivers/gpio/gpio-pci-idio-16.c
++
++ACCES PCIe-IDIO-24 GPIO DRIVER
++M: William Breathitt Gray <vilhelm.gray@gmail.com>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: drivers/gpio/gpio-pcie-idio-24.c
++
++ACENIC DRIVER
++M: Jes Sorensen <jes@trained-monkey.org>
++L: linux-acenic@sunsite.dk
++S: Maintained
++F: drivers/net/ethernet/alteon/acenic*
++
++ACER ASPIRE ONE TEMPERATURE AND FAN DRIVER
++M: Peter Kaestle <peter@piie.net>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++W: http://piie.net/?section=acerhdf
++F: drivers/platform/x86/acerhdf.c
++
++ACER WMI LAPTOP EXTRAS
++M: "Lee, Chun-Yi" <jlee@suse.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/acer-wmi.c
++
++ACPI
++M: "Rafael J. Wysocki" <rafael@kernel.org>
++M: Len Brown <lenb@kernel.org>
++L: linux-acpi@vger.kernel.org
++S: Supported
++W: https://01.org/linux-acpi
++Q: https://patchwork.kernel.org/project/linux-acpi/list/
++B: https://bugzilla.kernel.org
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
++F: Documentation/ABI/testing/configfs-acpi
++F: Documentation/ABI/testing/sysfs-bus-acpi
++F: Documentation/firmware-guide/acpi/
++F: drivers/acpi/
++F: drivers/pci/*/*acpi*
++F: drivers/pci/*acpi*
++F: drivers/pnp/pnpacpi/
++F: include/acpi/
++F: include/linux/acpi.h
++F: include/linux/fwnode.h
++F: tools/power/acpi/
++
++ACPI APEI
++M: "Rafael J. Wysocki" <rafael@kernel.org>
++M: Len Brown <lenb@kernel.org>
++R: James Morse <james.morse@arm.com>
++R: Tony Luck <tony.luck@intel.com>
++R: Borislav Petkov <bp@alien8.de>
++L: linux-acpi@vger.kernel.org
++F: drivers/acpi/apei/
++
++ACPI COMPONENT ARCHITECTURE (ACPICA)
++M: Robert Moore <robert.moore@intel.com>
++M: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
++L: linux-acpi@vger.kernel.org
++L: devel@acpica.org
++S: Supported
++W: https://acpica.org/
++W: https://github.com/acpica/acpica/
++Q: https://patchwork.kernel.org/project/linux-acpi/list/
++B: https://bugzilla.kernel.org
++B: https://bugs.acpica.org
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
++F: drivers/acpi/acpica/
++F: include/acpi/
++F: tools/power/acpi/
++
++ACPI FAN DRIVER
++M: Zhang Rui <rui.zhang@intel.com>
++L: linux-acpi@vger.kernel.org
++S: Supported
++W: https://01.org/linux-acpi
++B: https://bugzilla.kernel.org
++F: drivers/acpi/fan.c
++
++ACPI FOR ARM64 (ACPI/arm64)
++M: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
++M: Hanjun Guo <guohanjun@huawei.com>
++M: Sudeep Holla <sudeep.holla@arm.com>
++L: linux-acpi@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: drivers/acpi/arm64
++
++ACPI I2C MULTI INSTANTIATE DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/i2c-multi-instantiate.c
++
++ACPI PMIC DRIVERS
++M: "Rafael J. Wysocki" <rafael@kernel.org>
++M: Len Brown <lenb@kernel.org>
++R: Andy Shevchenko <andy@kernel.org>
++R: Mika Westerberg <mika.westerberg@linux.intel.com>
++L: linux-acpi@vger.kernel.org
++S: Supported
++Q: https://patchwork.kernel.org/project/linux-acpi/list/
++B: https://bugzilla.kernel.org
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
++F: drivers/acpi/pmic/
++
++ACPI THERMAL DRIVER
++M: Rafael J. Wysocki <rafael@kernel.org>
++R: Zhang Rui <rui.zhang@intel.com>
++L: linux-acpi@vger.kernel.org
++S: Supported
++W: https://01.org/linux-acpi
++B: https://bugzilla.kernel.org
++F: drivers/acpi/*thermal*
++
++ACPI VIDEO DRIVER
++M: Zhang Rui <rui.zhang@intel.com>
++L: linux-acpi@vger.kernel.org
++S: Supported
++W: https://01.org/linux-acpi
++B: https://bugzilla.kernel.org
++F: drivers/acpi/acpi_video.c
++
++ACPI VIOT DRIVER
++M: Jean-Philippe Brucker <jean-philippe@linaro.org>
++L: linux-acpi@vger.kernel.org
++L: iommu@lists.linux-foundation.org
++S: Maintained
++F: drivers/acpi/viot.c
++F: include/linux/acpi_viot.h
++
++ACPI WMI DRIVER
++L: platform-driver-x86@vger.kernel.org
++S: Orphan
++F: drivers/platform/x86/wmi.c
++F: include/uapi/linux/wmi.h
++
++ACRN HYPERVISOR SERVICE MODULE
++M: Fei Li <fei1.li@intel.com>
++L: acrn-dev@lists.projectacrn.org (subscribers-only)
++S: Supported
++W: https://projectacrn.org
++F: Documentation/virt/acrn/
++F: drivers/virt/acrn/
++F: include/uapi/linux/acrn.h
++
++AD1889 ALSA SOUND DRIVER
++L: linux-parisc@vger.kernel.org
++S: Maintained
++W: https://parisc.wiki.kernel.org/index.php/AD1889
++F: sound/pci/ad1889.*
++
++AD5110 ANALOG DEVICES DIGITAL POTENTIOMETERS DRIVER
++M: Mugilraj Dhavachelvan <dmugil2000@gmail.com>
++L: linux-iio@vger.kernel.org
++S: Supported
++F: drivers/iio/potentiometer/ad5110.c
++
++AD525X ANALOG DEVICES DIGITAL POTENTIOMETERS DRIVER
++M: Michael Hennerich <michael.hennerich@analog.com>
++S: Supported
++W: http://wiki.analog.com/AD5254
++W: http://ez.analog.com/community/linux-device-drivers
++F: drivers/misc/ad525x_dpot.c
++
++AD5398 CURRENT REGULATOR DRIVER (AD5398/AD5821)
++M: Michael Hennerich <michael.hennerich@analog.com>
++S: Supported
++W: http://wiki.analog.com/AD5398
++W: http://ez.analog.com/community/linux-device-drivers
++F: drivers/regulator/ad5398.c
++
++AD714X CAPACITANCE TOUCH SENSOR DRIVER (AD7142/3/7/8/7A)
++M: Michael Hennerich <michael.hennerich@analog.com>
++S: Supported
++W: http://wiki.analog.com/AD7142
++W: http://ez.analog.com/community/linux-device-drivers
++F: drivers/input/misc/ad714x.c
++
++AD7877 TOUCHSCREEN DRIVER
++M: Michael Hennerich <michael.hennerich@analog.com>
++S: Supported
++W: http://wiki.analog.com/AD7877
++W: http://ez.analog.com/community/linux-device-drivers
++F: drivers/input/touchscreen/ad7877.c
++
++AD7879 TOUCHSCREEN DRIVER (AD7879/AD7889)
++M: Michael Hennerich <michael.hennerich@analog.com>
++S: Supported
++W: http://wiki.analog.com/AD7879
++W: http://ez.analog.com/community/linux-device-drivers
++F: drivers/input/touchscreen/ad7879.c
++
++ADDRESS SPACE LAYOUT RANDOMIZATION (ASLR)
++M: Jiri Kosina <jikos@kernel.org>
++S: Maintained
++
++ADF7242 IEEE 802.15.4 RADIO DRIVER
++M: Michael Hennerich <michael.hennerich@analog.com>
++L: linux-wpan@vger.kernel.org
++S: Supported
++W: https://wiki.analog.com/ADF7242
++W: http://ez.analog.com/community/linux-device-drivers
++F: Documentation/devicetree/bindings/net/ieee802154/adf7242.txt
++F: drivers/net/ieee802154/adf7242.c
++
++ADM1025 HARDWARE MONITOR DRIVER
++M: Jean Delvare <jdelvare@suse.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/adm1025.rst
++F: drivers/hwmon/adm1025.c
++
++ADM1029 HARDWARE MONITOR DRIVER
++M: Corentin Labbe <clabbe.montjoie@gmail.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: drivers/hwmon/adm1029.c
++
++ADM8211 WIRELESS DRIVER
++L: linux-wireless@vger.kernel.org
++S: Orphan
++W: https://wireless.wiki.kernel.org/
++F: drivers/net/wireless/admtek/adm8211.*
++
++ADP1653 FLASH CONTROLLER DRIVER
++M: Sakari Ailus <sakari.ailus@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/i2c/adp1653.c
++F: include/media/i2c/adp1653.h
++
++ADP5520 BACKLIGHT DRIVER WITH IO EXPANDER (ADP5520/ADP5501)
++M: Michael Hennerich <michael.hennerich@analog.com>
++S: Supported
++W: http://wiki.analog.com/ADP5520
++W: http://ez.analog.com/community/linux-device-drivers
++F: drivers/gpio/gpio-adp5520.c
++F: drivers/input/keyboard/adp5520-keys.c
++F: drivers/leds/leds-adp5520.c
++F: drivers/mfd/adp5520.c
++F: drivers/video/backlight/adp5520_bl.c
++
++ADP5588 QWERTY KEYPAD AND IO EXPANDER DRIVER (ADP5588/ADP5587)
++M: Michael Hennerich <michael.hennerich@analog.com>
++S: Supported
++W: http://wiki.analog.com/ADP5588
++W: http://ez.analog.com/community/linux-device-drivers
++F: drivers/gpio/gpio-adp5588.c
++F: drivers/input/keyboard/adp5588-keys.c
++
++ADP8860 BACKLIGHT DRIVER (ADP8860/ADP8861/ADP8863)
++M: Michael Hennerich <michael.hennerich@analog.com>
++S: Supported
++W: http://wiki.analog.com/ADP8860
++W: http://ez.analog.com/community/linux-device-drivers
++F: drivers/video/backlight/adp8860_bl.c
++
++ADT746X FAN DRIVER
++M: Colin Leroy <colin@colino.net>
++S: Maintained
++F: drivers/macintosh/therm_adt746x.c
++
++ADT7475 HARDWARE MONITOR DRIVER
++M: Jean Delvare <jdelvare@suse.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/adt7475.rst
++F: drivers/hwmon/adt7475.c
++
++ADVANSYS SCSI DRIVER
++M: Matthew Wilcox <willy@infradead.org>
++M: Hannes Reinecke <hare@suse.com>
++L: linux-scsi@vger.kernel.org
++S: Maintained
++F: Documentation/scsi/advansys.rst
++F: drivers/scsi/advansys.c
++
++ADVANTECH SWBTN DRIVER
++M: Andrea Ho <Andrea.Ho@advantech.com.tw>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/adv_swbutton.c
++
++ADXL34X THREE-AXIS DIGITAL ACCELEROMETER DRIVER (ADXL345/ADXL346)
++M: Michael Hennerich <michael.hennerich@analog.com>
++S: Supported
++W: http://wiki.analog.com/ADXL345
++W: http://ez.analog.com/community/linux-device-drivers
++F: Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml
++F: drivers/input/misc/adxl34x.c
++
++ADXL372 THREE-AXIS DIGITAL ACCELEROMETER DRIVER
++M: Michael Hennerich <michael.hennerich@analog.com>
++S: Supported
++W: http://ez.analog.com/community/linux-device-drivers
++F: Documentation/devicetree/bindings/iio/accel/adi,adxl372.yaml
++F: drivers/iio/accel/adxl372.c
++F: drivers/iio/accel/adxl372_i2c.c
++F: drivers/iio/accel/adxl372_spi.c
++
++AF9013 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/dvb-frontends/af9013*
++
++AF9033 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/dvb-frontends/af9033*
++
++AFFS FILE SYSTEM
++M: David Sterba <dsterba@suse.com>
++L: linux-fsdevel@vger.kernel.org
++S: Odd Fixes
++F: Documentation/filesystems/affs.rst
++F: fs/affs/
++
++AFS FILESYSTEM
++M: David Howells <dhowells@redhat.com>
++M: Marc Dionne <marc.dionne@auristor.com>
++L: linux-afs@lists.infradead.org
++S: Supported
++W: https://www.infradead.org/~dhowells/kafs/
++F: Documentation/filesystems/afs.rst
++F: fs/afs/
++F: include/trace/events/afs.h
++
++AGPGART DRIVER
++M: David Airlie <airlied@linux.ie>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm
++F: drivers/char/agp/
++F: include/linux/agp*
++F: include/uapi/linux/agp*
++
++AHA152X SCSI DRIVER
++M: "Juergen E. Fischer" <fischer@norbit.de>
++L: linux-scsi@vger.kernel.org
++S: Maintained
++F: drivers/scsi/aha152x*
++F: drivers/scsi/pcmcia/aha152x*
++
++AIC7XXX / AIC79XX SCSI DRIVER
++M: Hannes Reinecke <hare@suse.com>
++L: linux-scsi@vger.kernel.org
++S: Maintained
++F: drivers/scsi/aic7xxx/
++
++AIMSLAB FM RADIO RECEIVER DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/radio-aimslab*
++
++AIO
++M: Benjamin LaHaise <bcrl@kvack.org>
++L: linux-aio@kvack.org
++S: Supported
++F: fs/aio.c
++F: include/linux/*aio*.h
++
++AIRSPY MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/usb/airspy/
++
++ALACRITECH GIGABIT ETHERNET DRIVER
++M: Lino Sanfilippo <LinoSanfilippo@gmx.de>
++S: Maintained
++F: drivers/net/ethernet/alacritech/*
++
++ALCATEL SPEEDTOUCH USB DRIVER
++M: Duncan Sands <duncan.sands@free.fr>
++L: linux-usb@vger.kernel.org
++S: Maintained
++W: http://www.linux-usb.org/SpeedTouch/
++F: drivers/usb/atm/speedtch.c
++F: drivers/usb/atm/usbatm.c
++
++ALCHEMY AU1XX0 MMC DRIVER
++M: Manuel Lauss <manuel.lauss@gmail.com>
++S: Maintained
++F: drivers/mmc/host/au1xmmc.c
++
++ALI1563 I2C DRIVER
++M: Rudolf Marek <r.marek@assembler.cz>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: Documentation/i2c/busses/i2c-ali1563.rst
++F: drivers/i2c/busses/i2c-ali1563.c
++
++ALIENWARE WMI DRIVER
++L: Dell.Client.Kernel@dell.com
++S: Maintained
++F: drivers/platform/x86/dell/alienware-wmi.c
++
++ALL SENSORS DLH SERIES PRESSURE SENSORS DRIVER
++M: Tomislav Denis <tomislav.denis@avl.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++W: http://www.allsensors.com/
++F: Documentation/devicetree/bindings/iio/pressure/asc,dlhl60d.yaml
++F: drivers/iio/pressure/dlhl60d.c
++
++ALLEGRO DVT VIDEO IP CORE DRIVER
++M: Michael Tretter <m.tretter@pengutronix.de>
++R: Pengutronix Kernel Team <kernel@pengutronix.de>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/media/allegro,al5e.yaml
++F: drivers/media/platform/allegro-dvt/
++
++ALLWINNER A10 CSI DRIVER
++M: Maxime Ripard <mripard@kernel.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/allwinner,sun4i-a10-csi.yaml
++F: drivers/media/platform/sunxi/sun4i-csi/
++
++ALLWINNER CPUFREQ DRIVER
++M: Yangtao Li <tiny.windzz@gmail.com>
++L: linux-pm@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/opp/allwinner,sun50i-h6-operating-points.yaml
++F: drivers/cpufreq/sun50i-cpufreq-nvmem.c
++
++ALLWINNER CRYPTO DRIVERS
++M: Corentin Labbe <clabbe.montjoie@gmail.com>
++L: linux-crypto@vger.kernel.org
++S: Maintained
++F: drivers/crypto/allwinner/
++
++ALLWINNER HARDWARE SPINLOCK SUPPORT
++M: Wilken Gottwalt <wilken.gottwalt@posteo.net>
++S: Maintained
++F: Documentation/devicetree/bindings/hwlock/allwinner,sun6i-hwspinlock.yaml
++F: drivers/hwspinlock/sun6i_hwspinlock.c
++
++ALLWINNER THERMAL DRIVER
++M: Vasily Khoruzhick <anarsoul@gmail.com>
++M: Yangtao Li <tiny.windzz@gmail.com>
++L: linux-pm@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/thermal/allwinner,sun8i-a83t-ths.yaml
++F: drivers/thermal/sun8i_thermal.c
++
++ALLWINNER VPU DRIVER
++M: Maxime Ripard <mripard@kernel.org>
++M: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/staging/media/sunxi/cedrus/
++
++ALPHA PORT
++M: Richard Henderson <rth@twiddle.net>
++M: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
++M: Matt Turner <mattst88@gmail.com>
++L: linux-alpha@vger.kernel.org
++S: Odd Fixes
++F: arch/alpha/
++
++ALPS PS/2 TOUCHPAD DRIVER
++R: Pali Rohár <pali@kernel.org>
++F: drivers/input/mouse/alps.*
++
++ALTERA I2C CONTROLLER DRIVER
++M: Thor Thayer <thor.thayer@linux.intel.com>
++S: Maintained
++F: Documentation/devicetree/bindings/i2c/i2c-altera.txt
++F: drivers/i2c/busses/i2c-altera.c
++
++ALTERA MAILBOX DRIVER
++M: Joyce Ooi <joyce.ooi@intel.com>
++S: Maintained
++F: drivers/mailbox/mailbox-altera.c
++
++ALTERA MSGDMA IP CORE DRIVER
++M: Olivier Dautricourt <olivier.dautricourt@orolia.com>
++R: Stefan Roese <sr@denx.de>
++L: dmaengine@vger.kernel.org
++S: Odd Fixes
++F: Documentation/devicetree/bindings/dma/altr,msgdma.yaml
++F: drivers/dma/altera-msgdma.c
++
++ALTERA PIO DRIVER
++M: Mun Yew Tham <mun.yew.tham@intel.com>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: drivers/gpio/gpio-altera.c
++
++ALTERA SYSTEM MANAGER DRIVER
++M: Thor Thayer <thor.thayer@linux.intel.com>
++S: Maintained
++F: drivers/mfd/altera-sysmgr.c
++F: include/linux/mfd/altera-sysmgr.h
++
++ALTERA SYSTEM RESOURCE DRIVER FOR ARRIA10 DEVKIT
++M: Thor Thayer <thor.thayer@linux.intel.com>
++S: Maintained
++F: drivers/gpio/gpio-altera-a10sr.c
++F: drivers/mfd/altera-a10sr.c
++F: drivers/reset/reset-a10sr.c
++F: include/dt-bindings/reset/altr,rst-mgr-a10sr.h
++F: include/linux/mfd/altera-a10sr.h
++
++ALTERA TRIPLE SPEED ETHERNET DRIVER
++M: Joyce Ooi <joyce.ooi@intel.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/altera/
++
++ALTERA UART/JTAG UART SERIAL DRIVERS
++M: Tobias Klauser <tklauser@distanz.ch>
++L: linux-serial@vger.kernel.org
++S: Maintained
++F: drivers/tty/serial/altera_jtaguart.c
++F: drivers/tty/serial/altera_uart.c
++F: include/linux/altera_jtaguart.h
++F: include/linux/altera_uart.h
++
++AMAZON ANNAPURNA LABS FIC DRIVER
++M: Talel Shenhar <talel@amazon.com>
++S: Maintained
++F: Documentation/devicetree/bindings/interrupt-controller/amazon,al-fic.txt
++F: drivers/irqchip/irq-al-fic.c
++
++AMAZON ANNAPURNA LABS MEMORY CONTROLLER EDAC
++M: Talel Shenhar <talel@amazon.com>
++M: Talel Shenhar <talelshenhar@gmail.com>
++S: Maintained
++F: Documentation/devicetree/bindings/edac/amazon,al-mc-edac.yaml
++F: drivers/edac/al_mc_edac.c
++
++AMAZON ANNAPURNA LABS THERMAL MMIO DRIVER
++M: Talel Shenhar <talel@amazon.com>
++S: Maintained
++F: Documentation/devicetree/bindings/thermal/amazon,al-thermal.txt
++F: drivers/thermal/thermal_mmio.c
++
++AMAZON ETHERNET DRIVERS
++M: Netanel Belgazal <netanel@amazon.com>
++M: Arthur Kiyanovski <akiyano@amazon.com>
++R: Guy Tzalik <gtzalik@amazon.com>
++R: Saeed Bishara <saeedb@amazon.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: Documentation/networking/device_drivers/ethernet/amazon/ena.rst
++F: drivers/net/ethernet/amazon/
++
++AMAZON RDMA EFA DRIVER
++M: Gal Pressman <galpress@amazon.com>
++R: Yossi Leybovich <sleybo@amazon.com>
++L: linux-rdma@vger.kernel.org
++S: Supported
++Q: https://patchwork.kernel.org/project/linux-rdma/list/
++F: drivers/infiniband/hw/efa/
++F: include/uapi/rdma/efa-abi.h
++
++AMD CRYPTOGRAPHIC COPROCESSOR (CCP) DRIVER
++M: Tom Lendacky <thomas.lendacky@amd.com>
++M: John Allen <john.allen@amd.com>
++L: linux-crypto@vger.kernel.org
++S: Supported
++F: drivers/crypto/ccp/
++F: include/linux/ccp.h
++
++AMD CRYPTOGRAPHIC COPROCESSOR (CCP) DRIVER - SEV SUPPORT
++M: Brijesh Singh <brijesh.singh@amd.com>
++M: Tom Lendacky <thomas.lendacky@amd.com>
++L: linux-crypto@vger.kernel.org
++S: Supported
++F: drivers/crypto/ccp/sev*
++F: include/uapi/linux/psp-sev.h
++
++AMD DISPLAY CORE
++M: Harry Wentland <harry.wentland@amd.com>
++M: Leo Li <sunpeng.li@amd.com>
++L: amd-gfx@lists.freedesktop.org
++S: Supported
++T: git https://gitlab.freedesktop.org/agd5f/linux.git
++F: drivers/gpu/drm/amd/display/
++
++AMD FAM15H PROCESSOR POWER MONITORING DRIVER
++M: Huang Rui <ray.huang@amd.com>
++L: linux-hwmon@vger.kernel.org
++S: Supported
++F: Documentation/hwmon/fam15h_power.rst
++F: drivers/hwmon/fam15h_power.c
++
++AMD FCH GPIO DRIVER
++M: Enrico Weigelt, metux IT consult <info@metux.net>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: drivers/gpio/gpio-amd-fch.c
++F: include/linux/platform_data/gpio/gpio-amd-fch.h
++
++AMD GEODE CS5536 USB DEVICE CONTROLLER DRIVER
++L: linux-geode@lists.infradead.org (moderated for non-subscribers)
++S: Orphan
++F: drivers/usb/gadget/udc/amd5536udc.*
++
++AMD GEODE PROCESSOR/CHIPSET SUPPORT
++M: Andres Salomon <dilinger@queued.net>
++L: linux-geode@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++W: http://www.amd.com/us-en/ConnectivitySolutions/TechnicalResources/0,,50_2334_2452_11363,00.html
++F: arch/x86/include/asm/geode.h
++F: drivers/char/hw_random/geode-rng.c
++F: drivers/crypto/geode*
++F: drivers/video/fbdev/geode/
++
++AMD IOMMU (AMD-VI)
++M: Joerg Roedel <joro@8bytes.org>
++R: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
++L: iommu@lists.linux-foundation.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git
++F: drivers/iommu/amd/
++F: include/linux/amd-iommu.h
++
++AMD KFD
++M: Felix Kuehling <Felix.Kuehling@amd.com>
++L: amd-gfx@lists.freedesktop.org
++S: Supported
++T: git https://gitlab.freedesktop.org/agd5f/linux.git
++F: drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd*.[ch]
++F: drivers/gpu/drm/amd/amdkfd/
++F: drivers/gpu/drm/amd/include/cik_structs.h
++F: drivers/gpu/drm/amd/include/kgd_kfd_interface.h
++F: drivers/gpu/drm/amd/include/v9_structs.h
++F: drivers/gpu/drm/amd/include/vi_structs.h
++F: include/uapi/linux/kfd_ioctl.h
++
++AMD SPI DRIVER
++M: Sanjay R Mehta <sanju.mehta@amd.com>
++S: Maintained
++F: drivers/spi/spi-amd.c
++
++AMD MP2 I2C DRIVER
++M: Elie Morisse <syniurge@gmail.com>
++M: Nehal Shah <nehal-bakulchandra.shah@amd.com>
++M: Shyam Sundar S K <shyam-sundar.s-k@amd.com>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: drivers/i2c/busses/i2c-amd-mp2*
++
++AMD PMC DRIVER
++M: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/amd-pmc.*
++
++AMD POWERPLAY AND SWSMU
++M: Evan Quan <evan.quan@amd.com>
++L: amd-gfx@lists.freedesktop.org
++S: Supported
++T: git https://gitlab.freedesktop.org/agd5f/linux.git
++F: drivers/gpu/drm/amd/pm/
++
++AMD PTDMA DRIVER
++M: Sanjay R Mehta <sanju.mehta@amd.com>
++L: dmaengine@vger.kernel.org
++S: Maintained
++F: drivers/dma/ptdma/
++
++AMD SEATTLE DEVICE TREE SUPPORT
++M: Brijesh Singh <brijeshkumar.singh@amd.com>
++M: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
++M: Tom Lendacky <thomas.lendacky@amd.com>
++S: Supported
++F: arch/arm64/boot/dts/amd/
++
++AMD XGBE DRIVER
++M: Tom Lendacky <thomas.lendacky@amd.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: arch/arm64/boot/dts/amd/amd-seattle-xgbe*.dtsi
++F: drivers/net/ethernet/amd/xgbe/
++
++AMD SENSOR FUSION HUB DRIVER
++M: Nehal Shah <nehal-bakulchandra.shah@amd.com>
++M: Basavaraj Natikar <basavaraj.natikar@amd.com>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: Documentation/hid/amd-sfh*
++F: drivers/hid/amd-sfh-hid/
++
++AMS AS73211 DRIVER
++M: Christian Eggers <ceggers@arri.de>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/iio/light/ams,as73211.yaml
++F: drivers/iio/light/as73211.c
++
++ANALOG DEVICES INC AD7192 DRIVER
++M: Alexandru Tachici <alexandru.tachici@analog.com>
++L: linux-iio@vger.kernel.org
++S: Supported
++W: http://ez.analog.com/community/linux-device-drivers
++F: Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
++F: drivers/iio/adc/ad7192.c
++
++ANALOG DEVICES INC AD7292 DRIVER
++M: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
++L: linux-iio@vger.kernel.org
++S: Supported
++W: http://ez.analog.com/community/linux-device-drivers
++F: Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml
++F: drivers/iio/adc/ad7292.c
++
++ANALOG DEVICES INC AD7768-1 DRIVER
++M: Michael Hennerich <Michael.Hennerich@analog.com>
++L: linux-iio@vger.kernel.org
++S: Supported
++W: http://ez.analog.com/community/linux-device-drivers
++F: Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml
++F: drivers/iio/adc/ad7768-1.c
++
++ANALOG DEVICES INC AD7780 DRIVER
++M: Michael Hennerich <Michael.Hennerich@analog.com>
++M: Renato Lui Geh <renatogeh@gmail.com>
++L: linux-iio@vger.kernel.org
++S: Supported
++W: http://ez.analog.com/community/linux-device-drivers
++F: Documentation/devicetree/bindings/iio/adc/adi,ad7780.yaml
++F: drivers/iio/adc/ad7780.c
++
++ANALOG DEVICES INC AD9389B DRIVER
++M: Hans Verkuil <hverkuil-cisco@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/i2c/ad9389b*
++
++ANALOG DEVICES INC ADGS1408 DRIVER
++M: Mircea Caprioru <mircea.caprioru@analog.com>
++S: Supported
++F: Documentation/devicetree/bindings/mux/adi,adgs1408.txt
++F: drivers/mux/adgs1408.c
++
++ANALOG DEVICES INC ADIN DRIVER
++M: Michael Hennerich <michael.hennerich@analog.com>
++L: netdev@vger.kernel.org
++S: Supported
++W: http://ez.analog.com/community/linux-device-drivers
++F: Documentation/devicetree/bindings/net/adi,adin.yaml
++F: drivers/net/phy/adin.c
++
++ANALOG DEVICES INC ADIS DRIVER LIBRARY
++M: Nuno Sa <nuno.sa@analog.com>
++L: linux-iio@vger.kernel.org
++S: Supported
++F: drivers/iio/imu/adis.c
++F: include/linux/iio/imu/adis.h
++
++ANALOG DEVICES INC ADIS16460 DRIVER
++M: Dragos Bogdan <dragos.bogdan@analog.com>
++L: linux-iio@vger.kernel.org
++S: Supported
++W: http://ez.analog.com/community/linux-device-drivers
++F: Documentation/devicetree/bindings/iio/imu/adi,adis16460.yaml
++F: drivers/iio/imu/adis16460.c
++
++ANALOG DEVICES INC ADIS16475 DRIVER
++M: Nuno Sa <nuno.sa@analog.com>
++L: linux-iio@vger.kernel.org
++W: http://ez.analog.com/community/linux-device-drivers
++S: Supported
++F: drivers/iio/imu/adis16475.c
++F: Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml
++
++ANALOG DEVICES INC ADM1177 DRIVER
++M: Michael Hennerich <Michael.Hennerich@analog.com>
++L: linux-hwmon@vger.kernel.org
++S: Supported
++W: http://ez.analog.com/community/linux-device-drivers
++F: Documentation/devicetree/bindings/hwmon/adi,adm1177.yaml
++F: drivers/hwmon/adm1177.c
++
++ANALOG DEVICES INC ADP5061 DRIVER
++M: Michael Hennerich <Michael.Hennerich@analog.com>
++L: linux-pm@vger.kernel.org
++S: Supported
++W: http://ez.analog.com/community/linux-device-drivers
++F: drivers/power/supply/adp5061.c
++
++ANALOG DEVICES INC ADV7180 DRIVER
++M: Lars-Peter Clausen <lars@metafoo.de>
++L: linux-media@vger.kernel.org
++S: Supported
++W: http://ez.analog.com/community/linux-device-drivers
++F: drivers/media/i2c/adv7180.c
++F: Documentation/devicetree/bindings/media/i2c/adv7180.yaml
++
++ANALOG DEVICES INC ADV748X DRIVER
++M: Kieran Bingham <kieran.bingham@ideasonboard.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/i2c/adv748x/*
++
++ANALOG DEVICES INC ADV7511 DRIVER
++M: Hans Verkuil <hverkuil-cisco@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/i2c/adv7511*
++
++ANALOG DEVICES INC ADV7604 DRIVER
++M: Hans Verkuil <hverkuil-cisco@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/i2c/adv7604*
++F: Documentation/devicetree/bindings/media/i2c/adv7604.yaml
++
++ANALOG DEVICES INC ADV7842 DRIVER
++M: Hans Verkuil <hverkuil-cisco@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/i2c/adv7842*
++
++ANALOG DEVICES INC ADXRS290 DRIVER
++M: Nishant Malpani <nish.malpani25@gmail.com>
++L: linux-iio@vger.kernel.org
++S: Supported
++F: drivers/iio/gyro/adxrs290.c
++F: Documentation/devicetree/bindings/iio/gyroscope/adi,adxrs290.yaml
++
++ANALOG DEVICES INC ASOC CODEC DRIVERS
++M: Lars-Peter Clausen <lars@metafoo.de>
++M: Nuno Sá <nuno.sa@analog.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Supported
++W: http://wiki.analog.com/
++W: http://ez.analog.com/community/linux-device-drivers
++F: sound/soc/codecs/ad1*
++F: sound/soc/codecs/ad7*
++F: sound/soc/codecs/adau*
++F: sound/soc/codecs/adav*
++F: sound/soc/codecs/sigmadsp.*
++F: sound/soc/codecs/ssm*
++
++ANALOG DEVICES INC DMA DRIVERS
++M: Lars-Peter Clausen <lars@metafoo.de>
++S: Supported
++W: http://ez.analog.com/community/linux-device-drivers
++F: drivers/dma/dma-axi-dmac.c
++
++ANALOG DEVICES INC IIO DRIVERS
++M: Lars-Peter Clausen <lars@metafoo.de>
++M: Michael Hennerich <Michael.Hennerich@analog.com>
++S: Supported
++W: http://wiki.analog.com/
++W: http://ez.analog.com/community/linux-device-drivers
++F: Documentation/ABI/testing/sysfs-bus-iio-frequency-ad9523
++F: Documentation/ABI/testing/sysfs-bus-iio-frequency-adf4350
++F: Documentation/devicetree/bindings/iio/*/adi,*
++F: Documentation/devicetree/bindings/iio/dac/adi,ad5758.yaml
++F: drivers/iio/*/ad*
++F: drivers/iio/adc/ltc249*
++F: drivers/iio/amplifiers/hmc425a.c
++F: drivers/staging/iio/*/ad*
++X: drivers/iio/*/adjd*
++
++ANALOGBITS PLL LIBRARIES
++M: Paul Walmsley <paul.walmsley@sifive.com>
++S: Supported
++F: drivers/clk/analogbits/*
++F: include/linux/clk/analogbits*
++
++ANDES ARCHITECTURE
++M: Nick Hu <nickhu@andestech.com>
++M: Greentime Hu <green.hu@gmail.com>
++M: Vincent Chen <deanbo422@gmail.com>
++S: Supported
++T: git https://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux.git
++F: Documentation/devicetree/bindings/interrupt-controller/andestech,ativic32.txt
++F: Documentation/devicetree/bindings/nds32/
++F: arch/nds32/
++N: nds32
++K: nds32
++
++ANDROID CONFIG FRAGMENTS
++M: Rob Herring <robh@kernel.org>
++S: Supported
++F: kernel/configs/android*
++
++ANDROID DRIVERS
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++M: Arve Hjønnevåg <arve@android.com>
++M: Todd Kjos <tkjos@android.com>
++M: Martijn Coenen <maco@android.com>
++M: Joel Fernandes <joel@joelfernandes.org>
++M: Christian Brauner <christian@brauner.io>
++M: Hridya Valsaraju <hridya@google.com>
++M: Suren Baghdasaryan <surenb@google.com>
++L: linux-kernel@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
++F: drivers/android/
++F: drivers/staging/android/
++
++ANDROID GOLDFISH PIC DRIVER
++M: Miodrag Dinic <miodrag.dinic@mips.com>
++S: Supported
++F: Documentation/devicetree/bindings/interrupt-controller/google,goldfish-pic.txt
++F: drivers/irqchip/irq-goldfish-pic.c
++
++ANDROID GOLDFISH RTC DRIVER
++M: Jiaxun Yang <jiaxun.yang@flygoat.com>
++S: Supported
++F: Documentation/devicetree/bindings/rtc/google,goldfish-rtc.txt
++F: drivers/rtc/rtc-goldfish.c
++
++AOA (Apple Onboard Audio) ALSA DRIVER
++M: Johannes Berg <johannes@sipsolutions.net>
++L: linuxppc-dev@lists.ozlabs.org
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++F: sound/aoa/
++
++APEX EMBEDDED SYSTEMS STX104 IIO DRIVER
++M: William Breathitt Gray <vilhelm.gray@gmail.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: drivers/iio/adc/stx104.c
++
++APM DRIVER
++M: Jiri Kosina <jikos@kernel.org>
++S: Odd fixes
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jikos/apm.git
++F: arch/x86/kernel/apm_32.c
++F: drivers/char/apm-emulation.c
++F: include/linux/apm_bios.h
++F: include/uapi/linux/apm_bios.h
++
++APPARMOR SECURITY MODULE
++M: John Johansen <john.johansen@canonical.com>
++L: apparmor@lists.ubuntu.com (subscribers-only, general discussion)
++S: Supported
++W: wiki.apparmor.net
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor
++F: Documentation/admin-guide/LSM/apparmor.rst
++F: security/apparmor/
++
++APPLE BCM5974 MULTITOUCH DRIVER
++M: Henrik Rydberg <rydberg@bitmath.org>
++L: linux-input@vger.kernel.org
++S: Odd fixes
++F: drivers/input/mouse/bcm5974.c
++
++APPLE DART IOMMU DRIVER
++M: Sven Peter <sven@svenpeter.dev>
++R: Alyssa Rosenzweig <alyssa@rosenzweig.io>
++L: iommu@lists.linux-foundation.org
++S: Maintained
++F: Documentation/devicetree/bindings/iommu/apple,dart.yaml
++F: drivers/iommu/apple-dart.c
++
++APPLE SMC DRIVER
++M: Henrik Rydberg <rydberg@bitmath.org>
++L: linux-hwmon@vger.kernel.org
++S: Odd fixes
++F: drivers/hwmon/applesmc.c
++
++APPLETALK NETWORK LAYER
++L: netdev@vger.kernel.org
++S: Odd fixes
++F: drivers/net/appletalk/
++F: include/linux/atalk.h
++F: include/uapi/linux/atalk.h
++F: net/appletalk/
++
++APPLIED MICRO (APM) X-GENE DEVICE TREE SUPPORT
++M: Khuong Dinh <khuong@os.amperecomputing.com>
++S: Supported
++F: arch/arm64/boot/dts/apm/
++
++APPLIED MICRO (APM) X-GENE SOC EDAC
++M: Khuong Dinh <khuong@os.amperecomputing.com>
++S: Supported
++F: Documentation/devicetree/bindings/edac/apm-xgene-edac.txt
++F: drivers/edac/xgene_edac.c
++
++APPLIED MICRO (APM) X-GENE SOC ETHERNET (V2) DRIVER
++M: Iyappan Subramanian <iyappan@os.amperecomputing.com>
++M: Keyur Chudgar <keyur@os.amperecomputing.com>
++S: Supported
++F: drivers/net/ethernet/apm/xgene-v2/
++
++APPLIED MICRO (APM) X-GENE SOC ETHERNET DRIVER
++M: Iyappan Subramanian <iyappan@os.amperecomputing.com>
++M: Keyur Chudgar <keyur@os.amperecomputing.com>
++M: Quan Nguyen <quan@os.amperecomputing.com>
++S: Supported
++F: Documentation/devicetree/bindings/net/apm-xgene-enet.txt
++F: Documentation/devicetree/bindings/net/apm-xgene-mdio.txt
++F: drivers/net/ethernet/apm/xgene/
++F: drivers/net/mdio/mdio-xgene.c
++
++APPLIED MICRO (APM) X-GENE SOC PMU
++M: Khuong Dinh <khuong@os.amperecomputing.com>
++S: Supported
++F: Documentation/admin-guide/perf/xgene-pmu.rst
++F: Documentation/devicetree/bindings/perf/apm-xgene-pmu.txt
++F: drivers/perf/xgene_pmu.c
++
++APTINA CAMERA SENSOR PLL
++M: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/i2c/aptina-pll.*
++
++AQUACOMPUTER D5 NEXT PUMP SENSOR DRIVER
++M: Aleksa Savic <savicaleksa83@gmail.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/aquacomputer_d5next.rst
++F: drivers/hwmon/aquacomputer_d5next.c
++
++AQUANTIA ETHERNET DRIVER (atlantic)
++M: Igor Russkikh <irusskikh@marvell.com>
++L: netdev@vger.kernel.org
++S: Supported
++W: https://www.marvell.com/
++Q: https://patchwork.kernel.org/project/netdevbpf/list/
++F: Documentation/networking/device_drivers/ethernet/aquantia/atlantic.rst
++F: drivers/net/ethernet/aquantia/atlantic/
++
++AQUANTIA ETHERNET DRIVER PTP SUBSYSTEM
++M: Egor Pomozov <epomozov@marvell.com>
++L: netdev@vger.kernel.org
++S: Supported
++W: http://www.aquantia.com
++F: drivers/net/ethernet/aquantia/atlantic/aq_ptp*
++
++ARASAN NAND CONTROLLER DRIVER
++M: Miquel Raynal <miquel.raynal@bootlin.com>
++M: Naga Sureshkumar Relli <nagasure@xilinx.com>
++L: linux-mtd@lists.infradead.org
++S: Maintained
++F: Documentation/devicetree/bindings/mtd/arasan,nand-controller.yaml
++F: drivers/mtd/nand/raw/arasan-nand-controller.c
++
++ARC FRAMEBUFFER DRIVER
++M: Jaya Kumar <jayalk@intworks.biz>
++S: Maintained
++F: drivers/video/fbdev/arcfb.c
++F: drivers/video/fbdev/core/fb_defio.c
++
++ARC PGU DRM DRIVER
++M: Alexey Brodkin <abrodkin@synopsys.com>
++S: Supported
++F: Documentation/devicetree/bindings/display/snps,arcpgu.txt
++F: drivers/gpu/drm/tiny/arcpgu.c
++
++ARCNET NETWORK LAYER
++M: Michael Grzeschik <m.grzeschik@pengutronix.de>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/arcnet/
++F: include/uapi/linux/if_arcnet.h
++
++ARM ARCHITECTED TIMER DRIVER
++M: Mark Rutland <mark.rutland@arm.com>
++M: Marc Zyngier <maz@kernel.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/include/asm/arch_timer.h
++F: arch/arm64/include/asm/arch_timer.h
++F: drivers/clocksource/arm_arch_timer.c
++
++ARM HDLCD DRM DRIVER
++M: Liviu Dudau <liviu.dudau@arm.com>
++S: Supported
++F: Documentation/devicetree/bindings/display/arm,hdlcd.txt
++F: drivers/gpu/drm/arm/hdlcd_*
++
++ARM INTEGRATOR, VERSATILE AND REALVIEW SUPPORT
++M: Linus Walleij <linus.walleij@linaro.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/arm/arm,integrator.yaml
++F: Documentation/devicetree/bindings/arm/arm,realview.yaml
++F: Documentation/devicetree/bindings/arm/arm,versatile.yaml
++F: Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml
++F: Documentation/devicetree/bindings/auxdisplay/arm,versatile-lcd.yaml
++F: Documentation/devicetree/bindings/clock/arm,syscon-icst.yaml
++F: Documentation/devicetree/bindings/i2c/i2c-versatile.txt
++F: Documentation/devicetree/bindings/interrupt-controller/arm,versatile-fpga-irq.txt
++F: Documentation/devicetree/bindings/mtd/arm-versatile.txt
++F: arch/arm/boot/dts/arm-realview-*
++F: arch/arm/boot/dts/integrator*
++F: arch/arm/boot/dts/versatile*
++F: arch/arm/mach-integrator/
++F: arch/arm/mach-realview/
++F: arch/arm/mach-versatile/
++F: arch/arm/plat-versatile/
++F: drivers/bus/arm-integrator-lm.c
++F: drivers/clk/versatile/
++F: drivers/i2c/busses/i2c-versatile.c
++F: drivers/irqchip/irq-versatile-fpga.c
++F: drivers/mtd/maps/physmap-versatile.*
++F: drivers/power/reset/arm-versatile-reboot.c
++F: drivers/soc/versatile/
++
++ARM KOMEDA DRM-KMS DRIVER
++M: James (Qian) Wang <james.qian.wang@arm.com>
++M: Liviu Dudau <liviu.dudau@arm.com>
++M: Mihail Atanassov <mihail.atanassov@arm.com>
++L: Mali DP Maintainers <malidp@foss.arm.com>
++S: Supported
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/arm,komeda.txt
++F: Documentation/gpu/komeda-kms.rst
++F: drivers/gpu/drm/arm/display/include/
++F: drivers/gpu/drm/arm/display/komeda/
++
++ARM MALI PANFROST DRM DRIVER
++M: Rob Herring <robh@kernel.org>
++M: Tomeu Vizoso <tomeu.vizoso@collabora.com>
++R: Steven Price <steven.price@arm.com>
++R: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
++L: dri-devel@lists.freedesktop.org
++S: Supported
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/panfrost/
++F: include/uapi/drm/panfrost_drm.h
++
++ARM MALI-DP DRM DRIVER
++M: Liviu Dudau <liviu.dudau@arm.com>
++M: Brian Starkey <brian.starkey@arm.com>
++L: Mali DP Maintainers <malidp@foss.arm.com>
++S: Supported
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/arm,malidp.txt
++F: Documentation/gpu/afbc.rst
++F: drivers/gpu/drm/arm/
++
++ARM MFM AND FLOPPY DRIVERS
++M: Ian Molton <spyro@f2s.com>
++S: Maintained
++F: arch/arm/include/asm/floppy.h
++F: arch/arm/mach-rpc/floppydma.S
++
++ARM PMU PROFILING AND DEBUGGING
++M: Will Deacon <will@kernel.org>
++M: Mark Rutland <mark.rutland@arm.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/arm/pmu.yaml
++F: Documentation/devicetree/bindings/perf/
++F: arch/arm*/include/asm/hw_breakpoint.h
++F: arch/arm*/include/asm/perf_event.h
++F: arch/arm*/kernel/hw_breakpoint.c
++F: arch/arm*/kernel/perf_*
++F: drivers/perf/
++F: include/linux/perf/arm_pmu.h
++
++ARM PORT
++M: Russell King <linux@armlinux.org.uk>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Odd Fixes
++W: http://www.armlinux.org.uk/
++T: git git://git.armlinux.org.uk/~rmk/linux-arm.git
++F: arch/arm/
++X: arch/arm/boot/dts/
++
++ARM PRIMECELL AACI PL041 DRIVER
++M: Russell King <linux@armlinux.org.uk>
++S: Odd Fixes
++F: sound/arm/aaci.*
++
++ARM PRIMECELL BUS SUPPORT
++M: Russell King <linux@armlinux.org.uk>
++S: Odd Fixes
++F: drivers/amba/
++F: include/linux/amba/bus.h
++
++ARM PRIMECELL PL35X NAND CONTROLLER DRIVER
++M: Miquel Raynal <miquel.raynal@bootlin.com>
++M: Naga Sureshkumar Relli <nagasure@xilinx.com>
++L: linux-mtd@lists.infradead.org
++S: Maintained
++F: Documentation/devicetree/bindings/mtd/arm,pl353-nand-r2p1.yaml
++F: drivers/mtd/nand/raw/pl35x-nand-controller.c
++
++ARM PRIMECELL PL35X SMC DRIVER
++M: Miquel Raynal <miquel.raynal@bootlin.com>
++M: Naga Sureshkumar Relli <nagasure@xilinx.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/memory-controllers/arm,pl353-smc.yaml
++F: drivers/memory/pl353-smc.c
++
++ARM PRIMECELL CLCD PL110 DRIVER
++M: Russell King <linux@armlinux.org.uk>
++S: Odd Fixes
++F: drivers/video/fbdev/amba-clcd.*
++
++ARM PRIMECELL KMI PL050 DRIVER
++M: Russell King <linux@armlinux.org.uk>
++S: Odd Fixes
++F: drivers/input/serio/ambakmi.*
++F: include/linux/amba/kmi.h
++
++ARM PRIMECELL MMCI PL180/1 DRIVER
++M: Russell King <linux@armlinux.org.uk>
++S: Odd Fixes
++F: drivers/mmc/host/mmci.*
++F: include/linux/amba/mmci.h
++
++ARM PRIMECELL SSP PL022 SPI DRIVER
++M: Linus Walleij <linus.walleij@linaro.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/spi/spi-pl022.yaml
++F: drivers/spi/spi-pl022.c
++
++ARM PRIMECELL UART PL010 AND PL011 DRIVERS
++M: Russell King <linux@armlinux.org.uk>
++S: Odd Fixes
++F: drivers/tty/serial/amba-pl01*.c
++F: include/linux/amba/serial.h
++
++ARM PRIMECELL VIC PL190/PL192 DRIVER
++M: Linus Walleij <linus.walleij@linaro.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/interrupt-controller/arm,vic.txt
++F: drivers/irqchip/irq-vic.c
++
++ARM SMC WATCHDOG DRIVER
++M: Julius Werner <jwerner@chromium.org>
++R: Evan Benn <evanbenn@chromium.org>
++S: Maintained
++F: Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml
++F: drivers/watchdog/arm_smc_wdt.c
++
++ARM SMMU DRIVERS
++M: Will Deacon <will@kernel.org>
++R: Robin Murphy <robin.murphy@arm.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/iommu/arm,smmu*
++F: drivers/iommu/arm/
++F: drivers/iommu/io-pgtable-arm*
++
++ARM AND ARM64 SoC SUB-ARCHITECTURES (COMMON PARTS)
++M: Arnd Bergmann <arnd@arndb.de>
++M: Olof Johansson <olof@lixom.net>
++M: soc@kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git
++F: arch/arm/boot/dts/Makefile
++F: arch/arm64/boot/dts/Makefile
++
++ARM SUB-ARCHITECTURES
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git
++F: arch/arm/mach-*/
++F: arch/arm/plat-*/
++
++ARM/ACTIONS SEMI ARCHITECTURE
++M: Andreas Färber <afaerber@suse.de>
++M: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-actions@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/arm/actions.yaml
++F: Documentation/devicetree/bindings/clock/actions,owl-cmu.txt
++F: Documentation/devicetree/bindings/dma/owl-dma.yaml
++F: Documentation/devicetree/bindings/i2c/i2c-owl.yaml
++F: Documentation/devicetree/bindings/interrupt-controller/actions,owl-sirq.yaml
++F: Documentation/devicetree/bindings/mmc/owl-mmc.yaml
++F: Documentation/devicetree/bindings/net/actions,owl-emac.yaml
++F: Documentation/devicetree/bindings/pinctrl/actions,*
++F: Documentation/devicetree/bindings/power/actions,owl-sps.txt
++F: Documentation/devicetree/bindings/timer/actions,owl-timer.txt
++F: arch/arm/boot/dts/owl-*
++F: arch/arm/mach-actions/
++F: arch/arm64/boot/dts/actions/
++F: drivers/clk/actions/
++F: drivers/clocksource/timer-owl*
++F: drivers/dma/owl-dma.c
++F: drivers/i2c/busses/i2c-owl.c
++F: drivers/irqchip/irq-owl-sirq.c
++F: drivers/mmc/host/owl-mmc.c
++F: drivers/net/ethernet/actions/
++F: drivers/pinctrl/actions/*
++F: drivers/soc/actions/
++F: include/dt-bindings/power/owl-*
++F: include/dt-bindings/reset/actions,*
++F: include/linux/soc/actions/
++N: owl
++
++ARM/ADS SPHERE MACHINE SUPPORT
++M: Lennert Buytenhek <kernel@wantstofly.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++
++ARM/AFEB9260 MACHINE SUPPORT
++M: Sergey Lapin <slapin@ossfans.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++
++ARM/AJECO 1ARM MACHINE SUPPORT
++M: Lennert Buytenhek <kernel@wantstofly.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++
++ARM/Allwinner SoC Clock Support
++M: Emilio López <emilio@elopez.com.ar>
++S: Maintained
++F: drivers/clk/sunxi/
++
++ARM/Allwinner sunXi SoC support
++M: Maxime Ripard <mripard@kernel.org>
++M: Chen-Yu Tsai <wens@csie.org>
++R: Jernej Skrabec <jernej.skrabec@gmail.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux.git
++L: linux-sunxi@lists.linux.dev
++F: arch/arm/mach-sunxi/
++F: arch/arm64/boot/dts/allwinner/
++F: drivers/clk/sunxi-ng/
++F: drivers/pinctrl/sunxi/
++F: drivers/soc/sunxi/
++N: allwinner
++N: sun[x456789]i
++N: sun50i
++
++ARM/Amlogic Meson SoC CLOCK FRAMEWORK
++M: Neil Armstrong <narmstrong@baylibre.com>
++M: Jerome Brunet <jbrunet@baylibre.com>
++L: linux-amlogic@lists.infradead.org
++S: Maintained
++F: Documentation/devicetree/bindings/clock/amlogic*
++F: drivers/clk/meson/
++F: include/dt-bindings/clock/gxbb*
++F: include/dt-bindings/clock/meson*
++
++ARM/Amlogic Meson SoC Crypto Drivers
++M: Corentin Labbe <clabbe@baylibre.com>
++L: linux-crypto@vger.kernel.org
++L: linux-amlogic@lists.infradead.org
++S: Maintained
++F: Documentation/devicetree/bindings/crypto/amlogic*
++F: drivers/crypto/amlogic/
++
++ARM/Amlogic Meson SoC Sound Drivers
++M: Jerome Brunet <jbrunet@baylibre.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/sound/amlogic*
++F: sound/soc/meson/
++
++ARM/Amlogic Meson SoC support
++M: Neil Armstrong <narmstrong@baylibre.com>
++M: Kevin Hilman <khilman@baylibre.com>
++R: Jerome Brunet <jbrunet@baylibre.com>
++R: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-amlogic@lists.infradead.org
++S: Maintained
++W: http://linux-meson.com/
++F: arch/arm/boot/dts/meson*
++F: arch/arm/mach-meson/
++F: arch/arm64/boot/dts/amlogic/
++F: drivers/mmc/host/meson*
++F: drivers/pinctrl/meson/
++F: drivers/rtc/rtc-meson*
++F: drivers/soc/amlogic/
++N: meson
++
++ARM/Annapurna Labs ALPINE ARCHITECTURE
++M: Tsahee Zidenberg <tsahee@annapurnalabs.com>
++M: Antoine Tenart <atenart@kernel.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/boot/dts/alpine*
++F: arch/arm/mach-alpine/
++F: arch/arm64/boot/dts/amazon/
++F: drivers/*/*alpine*
++
++ARM/APPLE MACHINE SUPPORT
++M: Hector Martin <marcan@marcan.st>
++M: Sven Peter <sven@svenpeter.dev>
++R: Alyssa Rosenzweig <alyssa@rosenzweig.io>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++W: https://asahilinux.org
++B: https://github.com/AsahiLinux/linux/issues
++C: irc://irc.oftc.net/asahi-dev
++T: git https://github.com/AsahiLinux/linux.git
++F: Documentation/devicetree/bindings/arm/apple.yaml
++F: Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml
++F: Documentation/devicetree/bindings/pinctrl/apple,pinctrl.yaml
++F: arch/arm64/boot/dts/apple/
++F: drivers/irqchip/irq-apple-aic.c
++F: include/dt-bindings/interrupt-controller/apple-aic.h
++F: include/dt-bindings/pinctrl/apple.h
++
++ARM/ARTPEC MACHINE SUPPORT
++M: Jesper Nilsson <jesper.nilsson@axis.com>
++M: Lars Persson <lars.persson@axis.com>
++L: linux-arm-kernel@axis.com
++S: Maintained
++F: Documentation/devicetree/bindings/pinctrl/axis,artpec6-pinctrl.txt
++F: arch/arm/boot/dts/artpec6*
++F: arch/arm/mach-artpec
++F: drivers/clk/axis
++F: drivers/crypto/axis
++F: drivers/mmc/host/usdhi6rol0.c
++F: drivers/pinctrl/pinctrl-artpec*
++
++ARM/ASPEED I2C DRIVER
++M: Brendan Higgins <brendanhiggins@google.com>
++R: Benjamin Herrenschmidt <benh@kernel.crashing.org>
++R: Joel Stanley <joel@jms.id.au>
++L: linux-i2c@vger.kernel.org
++L: openbmc@lists.ozlabs.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/i2c/i2c-aspeed.txt
++F: Documentation/devicetree/bindings/interrupt-controller/aspeed,ast2400-i2c-ic.txt
++F: drivers/i2c/busses/i2c-aspeed.c
++F: drivers/irqchip/irq-aspeed-i2c-ic.c
++
++ARM/ASPEED MACHINE SUPPORT
++M: Joel Stanley <joel@jms.id.au>
++R: Andrew Jeffery <andrew@aj.id.au>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-aspeed@lists.ozlabs.org (moderated for non-subscribers)
++S: Supported
++Q: https://patchwork.ozlabs.org/project/linux-aspeed/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/joel/aspeed.git
++F: arch/arm/boot/dts/aspeed-*
++F: arch/arm/mach-aspeed/
++N: aspeed
++
++ARM/BITMAIN ARCHITECTURE
++M: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/arm/bitmain.yaml
++F: Documentation/devicetree/bindings/clock/bitmain,bm1880-clk.yaml
++F: Documentation/devicetree/bindings/pinctrl/bitmain,bm1880-pinctrl.txt
++F: arch/arm64/boot/dts/bitmain/
++F: drivers/clk/clk-bm1880.c
++F: drivers/pinctrl/pinctrl-bm1880.c
++
++ARM/CALXEDA HIGHBANK ARCHITECTURE
++M: Andre Przywara <andre.przywara@arm.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/boot/dts/ecx-*.dts*
++F: arch/arm/boot/dts/highbank.dts
++F: arch/arm/mach-highbank/
++
++ARM/CAVIUM NETWORKS CNS3XXX MACHINE SUPPORT
++M: Krzysztof Halasa <khalasa@piap.pl>
++S: Maintained
++F: arch/arm/mach-cns3xxx/
++
++ARM/CAVIUM THUNDER NETWORK DRIVER
++M: Sunil Goutham <sgoutham@marvell.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++F: drivers/net/ethernet/cavium/thunder/
++
++ARM/CIRRUS LOGIC BK3 MACHINE SUPPORT
++M: Lukasz Majewski <lukma@denx.de>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/mach-ep93xx/ts72xx.c
++
++ARM/CIRRUS LOGIC CLPS711X ARM ARCHITECTURE
++M: Alexander Shiyan <shc_work@mail.ru>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Odd Fixes
++N: clps711x
++
++ARM/CIRRUS LOGIC EDB9315A MACHINE SUPPORT
++M: Lennert Buytenhek <kernel@wantstofly.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++
++ARM/CIRRUS LOGIC EP93XX ARM ARCHITECTURE
++M: Hartley Sweeten <hsweeten@visionengravers.com>
++M: Alexander Sverdlin <alexander.sverdlin@gmail.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/mach-ep93xx/
++F: arch/arm/mach-ep93xx/include/mach/
++
++ARM/CLKDEV SUPPORT
++M: Russell King <linux@armlinux.org.uk>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.armlinux.org.uk/~rmk/linux-arm.git clkdev
++F: drivers/clk/clkdev.c
++
++ARM/CONEXANT DIGICOLOR MACHINE SUPPORT
++M: Baruch Siach <baruch@tkos.co.il>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/boot/dts/cx92755*
++N: digicolor
++
++ARM/CONTEC MICRO9 MACHINE SUPPORT
++M: Hubert Feurstein <hubert.feurstein@contec.at>
++S: Maintained
++F: arch/arm/mach-ep93xx/micro9.c
++
++ARM/CORESIGHT FRAMEWORK AND DRIVERS
++M: Mathieu Poirier <mathieu.poirier@linaro.org>
++M: Suzuki K Poulose <suzuki.poulose@arm.com>
++R: Mike Leach <mike.leach@linaro.org>
++R: Leo Yan <leo.yan@linaro.org>
++L: coresight@lists.linaro.org (moderated for non-subscribers)
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux.git
++F: Documentation/ABI/testing/sysfs-bus-coresight-devices-*
++F: Documentation/devicetree/bindings/arm/coresight-cpu-debug.txt
++F: Documentation/devicetree/bindings/arm/coresight-cti.yaml
++F: Documentation/devicetree/bindings/arm/coresight.txt
++F: Documentation/devicetree/bindings/arm/ete.yaml
++F: Documentation/devicetree/bindings/arm/trbe.yaml
++F: Documentation/trace/coresight/*
++F: drivers/hwtracing/coresight/*
++F: include/dt-bindings/arm/coresight-cti-dt.h
++F: include/linux/coresight*
++F: tools/perf/arch/arm/util/auxtrace.c
++F: tools/perf/arch/arm/util/cs-etm.c
++F: tools/perf/arch/arm/util/cs-etm.h
++F: tools/perf/arch/arm/util/pmu.c
++F: tools/perf/util/cs-etm-decoder/*
++F: tools/perf/util/cs-etm.*
++
++ARM/CORGI MACHINE SUPPORT
++M: Richard Purdie <rpurdie@rpsys.net>
++S: Maintained
++
++ARM/CORTINA SYSTEMS GEMINI ARM ARCHITECTURE
++M: Hans Ulli Kroll <ulli.kroll@googlemail.com>
++M: Linus Walleij <linus.walleij@linaro.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://github.com/ulli-kroll/linux.git
++F: Documentation/devicetree/bindings/arm/gemini.txt
++F: Documentation/devicetree/bindings/net/cortina,gemini-ethernet.txt
++F: Documentation/devicetree/bindings/pinctrl/cortina,gemini-pinctrl.txt
++F: Documentation/devicetree/bindings/rtc/faraday,ftrtc010.txt
++F: arch/arm/boot/dts/gemini*
++F: arch/arm/mach-gemini/
++F: drivers/crypto/gemini/
++F: drivers/net/ethernet/cortina/
++F: drivers/pinctrl/pinctrl-gemini.c
++F: drivers/rtc/rtc-ftrtc010.c
++
++ARM/CZ.NIC TURRIS SUPPORT
++M: Marek Behún <kabel@kernel.org>
++S: Maintained
++W: https://www.turris.cz/
++F: Documentation/ABI/testing/debugfs-moxtet
++F: Documentation/ABI/testing/sysfs-bus-moxtet-devices
++F: Documentation/ABI/testing/sysfs-firmware-turris-mox-rwtm
++F: Documentation/devicetree/bindings/bus/moxtet.txt
++F: Documentation/devicetree/bindings/firmware/cznic,turris-mox-rwtm.txt
++F: Documentation/devicetree/bindings/gpio/gpio-moxtet.txt
++F: Documentation/devicetree/bindings/leds/cznic,turris-omnia-leds.yaml
++F: Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt
++F: drivers/bus/moxtet.c
++F: drivers/firmware/turris-mox-rwtm.c
++F: drivers/leds/leds-turris-omnia.c
++F: drivers/mailbox/armada-37xx-rwtm-mailbox.c
++F: drivers/gpio/gpio-moxtet.c
++F: drivers/watchdog/armada_37xx_wdt.c
++F: include/dt-bindings/bus/moxtet.h
++F: include/linux/armada-37xx-rwtm-mailbox.h
++F: include/linux/moxtet.h
++
++ARM/EZX SMARTPHONES (A780, A910, A1200, E680, ROKR E2 and ROKR E6)
++M: Robert Jarzmik <robert.jarzmik@free.fr>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/mach-pxa/ezx.c
++
++ARM/FARADAY FA526 PORT
++M: Hans Ulli Kroll <ulli.kroll@googlemail.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.berlios.de/gemini-board
++F: arch/arm/mm/*-fa*
++
++ARM/FOOTBRIDGE ARCHITECTURE
++M: Russell King <linux@armlinux.org.uk>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++W: http://www.armlinux.org.uk/
++F: arch/arm/include/asm/hardware/dec21285.h
++F: arch/arm/mach-footbridge/
++
++ARM/FREESCALE IMX / MXC ARM ARCHITECTURE
++M: Shawn Guo <shawnguo@kernel.org>
++M: Sascha Hauer <s.hauer@pengutronix.de>
++R: Pengutronix Kernel Team <kernel@pengutronix.de>
++R: Fabio Estevam <festevam@gmail.com>
++R: NXP Linux Team <linux-imx@nxp.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git
++X: drivers/media/i2c/
++N: imx
++N: mxs
++
++ARM/FREESCALE LAYERSCAPE ARM ARCHITECTURE
++M: Shawn Guo <shawnguo@kernel.org>
++M: Li Yang <leoyang.li@nxp.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git
++F: arch/arm/boot/dts/ls1021a*
++F: arch/arm64/boot/dts/freescale/fsl-*
++F: arch/arm64/boot/dts/freescale/qoriq-*
++
++ARM/FREESCALE VYBRID ARM ARCHITECTURE
++M: Shawn Guo <shawnguo@kernel.org>
++M: Sascha Hauer <s.hauer@pengutronix.de>
++R: Pengutronix Kernel Team <kernel@pengutronix.de>
++R: Stefan Agner <stefan@agner.ch>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git
++F: arch/arm/boot/dts/vf*
++F: arch/arm/mach-imx/*vf610*
++
++ARM/GLOMATION GESBC9312SX MACHINE SUPPORT
++M: Lennert Buytenhek <kernel@wantstofly.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++
++ARM/GUMSTIX MACHINE SUPPORT
++M: Steve Sakoman <sakoman@gmail.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++
++ARM/H4700 (HP IPAQ HX4700) MACHINE SUPPORT
++M: Philipp Zabel <philipp.zabel@gmail.com>
++M: Paul Parsons <lost.distance@yahoo.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/mach-pxa/hx4700.c
++F: arch/arm/mach-pxa/include/mach/hx4700.h
++F: sound/soc/pxa/hx4700.c
++
++ARM/HISILICON SOC SUPPORT
++M: Wei Xu <xuwei5@hisilicon.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++W: http://www.hisilicon.com
++T: git git://github.com/hisilicon/linux-hisi.git
++F: arch/arm/boot/dts/hi3*
++F: arch/arm/boot/dts/hip*
++F: arch/arm/boot/dts/hisi*
++F: arch/arm/mach-hisi/
++F: arch/arm64/boot/dts/hisilicon/
++
++ARM/HP JORNADA 7XX MACHINE SUPPORT
++M: Kristoffer Ericson <kristoffer.ericson@gmail.com>
++S: Maintained
++W: www.jlime.com
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/kristoffer/linux-hpc.git
++F: arch/arm/mach-sa1100/include/mach/jornada720.h
++F: arch/arm/mach-sa1100/jornada720.c
++
++ARM/IGEP MACHINE SUPPORT
++M: Enric Balletbo i Serra <eballetbo@gmail.com>
++M: Javier Martinez Canillas <javier@dowhile0.org>
++L: linux-omap@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/boot/dts/omap3-igep*
++
++ARM/INCOME PXA270 SUPPORT
++M: Marek Vasut <marek.vasut@gmail.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/mach-pxa/colibri-pxa270-income.c
++
++ARM/INTEL IOP32X ARM ARCHITECTURE
++M: Lennert Buytenhek <kernel@wantstofly.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++
++ARM/INTEL IQ81342EX MACHINE SUPPORT
++M: Lennert Buytenhek <kernel@wantstofly.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++
++ARM/INTEL IXDP2850 MACHINE SUPPORT
++M: Lennert Buytenhek <kernel@wantstofly.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++
++ARM/INTEL IXP4XX ARM ARCHITECTURE
++M: Linus Walleij <linusw@kernel.org>
++M: Imre Kaloz <kaloz@openwrt.org>
++M: Krzysztof Halasa <khalasa@piap.pl>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/arm/intel-ixp4xx.yaml
++F: Documentation/devicetree/bindings/bus/intel,ixp4xx-expansion-bus-controller.yaml
++F: Documentation/devicetree/bindings/gpio/intel,ixp4xx-gpio.txt
++F: Documentation/devicetree/bindings/interrupt-controller/intel,ixp4xx-interrupt.yaml
++F: Documentation/devicetree/bindings/timer/intel,ixp4xx-timer.yaml
++F: arch/arm/mach-ixp4xx/
++F: drivers/bus/intel-ixp4xx-eb.c
++F: drivers/clocksource/timer-ixp4xx.c
++F: drivers/crypto/ixp4xx_crypto.c
++F: drivers/gpio/gpio-ixp4xx.c
++F: drivers/irqchip/irq-ixp4xx.c
++F: include/linux/irqchip/irq-ixp4xx.h
++F: include/linux/platform_data/timer-ixp4xx.h
++
++ARM/INTEL KEEMBAY ARCHITECTURE
++M: Paul J. Murphy <paul.j.murphy@intel.com>
++M: Daniele Alessandrelli <daniele.alessandrelli@intel.com>
++S: Maintained
++F: Documentation/devicetree/bindings/arm/intel,keembay.yaml
++F: arch/arm64/boot/dts/intel/keembay-evm.dts
++F: arch/arm64/boot/dts/intel/keembay-soc.dtsi
++
++ARM/INTEL RESEARCH IMOTE/STARGATE 2 MACHINE SUPPORT
++M: Jonathan Cameron <jic23@cam.ac.uk>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/mach-pxa/stargate2.c
++F: drivers/pcmcia/pxa2xx_stargate2.c
++
++ARM/INTEL XSC3 (MANZANO) ARM CORE
++M: Lennert Buytenhek <kernel@wantstofly.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++
++ARM/IP FABRICS DOUBLE ESPRESSO MACHINE SUPPORT
++M: Lennert Buytenhek <kernel@wantstofly.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++
++ARM/LG1K ARCHITECTURE
++M: Chanho Min <chanho.min@lge.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm64/boot/dts/lg/
++
++ARM/LOGICPD PXA270 MACHINE SUPPORT
++M: Lennert Buytenhek <kernel@wantstofly.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++
++ARM/LPC18XX ARCHITECTURE
++M: Vladimir Zapolskiy <vz@mleia.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/i2c/i2c-lpc2k.txt
++F: arch/arm/boot/dts/lpc43*
++F: drivers/i2c/busses/i2c-lpc2k.c
++F: drivers/memory/pl172.c
++F: drivers/mtd/spi-nor/controllers/nxp-spifi.c
++F: drivers/rtc/rtc-lpc24xx.c
++N: lpc18xx
++
++ARM/LPC32XX SOC SUPPORT
++M: Vladimir Zapolskiy <vz@mleia.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://github.com/vzapolskiy/linux-lpc32xx.git
++F: Documentation/devicetree/bindings/i2c/i2c-pnx.txt
++F: arch/arm/boot/dts/lpc32*
++F: arch/arm/mach-lpc32xx/
++F: drivers/i2c/busses/i2c-pnx.c
++F: drivers/net/ethernet/nxp/lpc_eth.c
++F: drivers/usb/host/ohci-nxp.c
++F: drivers/watchdog/pnx4008_wdt.c
++N: lpc32xx
++
++ARM/MAGICIAN MACHINE SUPPORT
++M: Philipp Zabel <philipp.zabel@gmail.com>
++S: Maintained
++
++ARM/Marvell Dove/MV78xx0/Orion SOC support
++M: Andrew Lunn <andrew@lunn.ch>
++M: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
++M: Gregory Clement <gregory.clement@bootlin.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu.git
++F: Documentation/devicetree/bindings/soc/dove/
++F: arch/arm/boot/dts/dove*
++F: arch/arm/boot/dts/orion5x*
++F: arch/arm/mach-dove/
++F: arch/arm/mach-mv78xx0/
++F: arch/arm/mach-orion5x/
++F: arch/arm/plat-orion/
++F: drivers/soc/dove/
++
++ARM/Marvell Kirkwood and Armada 370, 375, 38x, 39x, XP, 3700, 7K/8K, CN9130 SOC support
++M: Andrew Lunn <andrew@lunn.ch>
++M: Gregory Clement <gregory.clement@bootlin.com>
++M: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu.git
++F: arch/arm/boot/dts/armada*
++F: arch/arm/boot/dts/kirkwood*
++F: arch/arm/configs/mvebu_*_defconfig
++F: arch/arm/mach-mvebu/
++F: arch/arm64/boot/dts/marvell/armada*
++F: arch/arm64/boot/dts/marvell/cn913*
++F: drivers/cpufreq/armada-37xx-cpufreq.c
++F: drivers/cpufreq/armada-8k-cpufreq.c
++F: drivers/cpufreq/mvebu-cpufreq.c
++F: drivers/irqchip/irq-armada-370-xp.c
++F: drivers/irqchip/irq-mvebu-*
++F: drivers/pinctrl/mvebu/
++F: drivers/rtc/rtc-armada38x.c
++
++ARM/Mediatek RTC DRIVER
++M: Eddie Huang <eddie.huang@mediatek.com>
++M: Sean Wang <sean.wang@mediatek.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-mediatek@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/rtc/rtc-mt2712.txt
++F: Documentation/devicetree/bindings/rtc/rtc-mt7622.txt
++F: drivers/rtc/rtc-mt2712.c
++F: drivers/rtc/rtc-mt6397.c
++F: drivers/rtc/rtc-mt7622.c
++
++ARM/Mediatek SoC support
++M: Matthias Brugger <matthias.bgg@gmail.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-mediatek@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++W: https://mtk.wiki.kernel.org/
++C: irc://chat.freenode.net/linux-mediatek
++F: arch/arm/boot/dts/mt6*
++F: arch/arm/boot/dts/mt7*
++F: arch/arm/boot/dts/mt8*
++F: arch/arm/mach-mediatek/
++F: arch/arm64/boot/dts/mediatek/
++F: drivers/soc/mediatek/
++N: mtk
++N: mt[678]
++K: mediatek
++
++ARM/Mediatek USB3 PHY DRIVER
++M: Chunfeng Yun <chunfeng.yun@mediatek.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-mediatek@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/phy/mediatek,*
++F: drivers/phy/mediatek/
++
++ARM/Microchip (AT91) SoC support
++M: Nicolas Ferre <nicolas.ferre@microchip.com>
++M: Alexandre Belloni <alexandre.belloni@bootlin.com>
++M: Ludovic Desroches <ludovic.desroches@microchip.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++W: http://www.linux4sam.org
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux.git
++F: arch/arm/boot/dts/at91*.dts
++F: arch/arm/boot/dts/at91*.dtsi
++F: arch/arm/boot/dts/sama*.dts
++F: arch/arm/boot/dts/sama*.dtsi
++F: arch/arm/include/debug/at91.S
++F: arch/arm/mach-at91/
++F: drivers/memory/atmel*
++F: drivers/watchdog/sama5d4_wdt.c
++F: include/soc/at91/
++X: drivers/input/touchscreen/atmel_mxt_ts.c
++X: drivers/net/wireless/atmel/
++N: at91
++N: atmel
++
++ARM/Microchip Sparx5 SoC support
++M: Lars Povlsen <lars.povlsen@microchip.com>
++M: Steen Hegelund <Steen.Hegelund@microchip.com>
++M: UNGLinuxDriver@microchip.com
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++T: git git://github.com/microchip-ung/linux-upstream.git
++F: arch/arm64/boot/dts/microchip/
++F: drivers/pinctrl/pinctrl-microchip-sgpio.c
++N: sparx5
++
++Microchip Timer Counter Block (TCB) Capture Driver
++M: Kamel Bouhara <kamel.bouhara@bootlin.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: drivers/counter/microchip-tcb-capture.c
++
++ARM/MIOA701 MACHINE SUPPORT
++M: Robert Jarzmik <robert.jarzmik@free.fr>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/mach-pxa/mioa701.c
++
++ARM/MStar/Sigmastar Armv7 SoC support
++M: Daniel Palmer <daniel@thingy.jp>
++M: Romain Perier <romain.perier@gmail.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++W: http://linux-chenxing.org/
++T: git git://github.com/linux-chenxing/linux.git
++F: Documentation/devicetree/bindings/arm/mstar/*
++F: Documentation/devicetree/bindings/clock/mstar,msc313-mpll.yaml
++F: Documentation/devicetree/bindings/gpio/mstar,msc313-gpio.yaml
++F: arch/arm/boot/dts/mstar-*
++F: arch/arm/mach-mstar/
++F: drivers/clk/mstar/
++F: drivers/gpio/gpio-msc313.c
++F: drivers/watchdog/msc313e_wdt.c
++F: include/dt-bindings/clock/mstar-*
++F: include/dt-bindings/gpio/msc313-gpio.h
++
++ARM/NEC MOBILEPRO 900/c MACHINE SUPPORT
++M: Michael Petchkovsky <mkpetch@internode.on.net>
++S: Maintained
++
++ARM/NOMADIK/Ux500 ARCHITECTURES
++M: Linus Walleij <linus.walleij@linaro.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik.git
++F: Documentation/devicetree/bindings/arm/ste-*
++F: Documentation/devicetree/bindings/arm/ux500.yaml
++F: Documentation/devicetree/bindings/arm/ux500/
++F: Documentation/devicetree/bindings/i2c/i2c-nomadik.txt
++F: arch/arm/boot/dts/ste-*
++F: arch/arm/mach-nomadik/
++F: arch/arm/mach-ux500/
++F: drivers/clk/clk-nomadik.c
++F: drivers/clocksource/clksrc-dbx500-prcmu.c
++F: drivers/dma/ste_dma40*
++F: drivers/hwspinlock/u8500_hsem.c
++F: drivers/i2c/busses/i2c-nomadik.c
++F: drivers/iio/adc/ab8500-gpadc.c
++F: drivers/mfd/ab8500*
++F: drivers/mfd/abx500*
++F: drivers/mfd/db8500*
++F: drivers/pinctrl/nomadik/
++F: drivers/rtc/rtc-ab8500.c
++F: drivers/rtc/rtc-pl031.c
++F: drivers/soc/ux500/
++
++ARM/NUVOTON NPCM ARCHITECTURE
++M: Avi Fishman <avifishman70@gmail.com>
++M: Tomer Maimon <tmaimon77@gmail.com>
++M: Tali Perry <tali.perry1@gmail.com>
++R: Patrick Venture <venture@google.com>
++R: Nancy Yuen <yuenn@google.com>
++R: Benjamin Fair <benjaminfair@google.com>
++L: openbmc@lists.ozlabs.org (moderated for non-subscribers)
++S: Supported
++F: Documentation/devicetree/bindings/*/*/*npcm*
++F: Documentation/devicetree/bindings/*/*npcm*
++F: arch/arm/boot/dts/nuvoton-npcm*
++F: arch/arm/mach-npcm/
++F: drivers/*/*npcm*
++F: drivers/*/*/*npcm*
++F: include/dt-bindings/clock/nuvoton,npcm7xx-clock.h
++
++ARM/NUVOTON WPCM450 ARCHITECTURE
++M: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
++L: openbmc@lists.ozlabs.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/*/*wpcm*
++F: arch/arm/boot/dts/nuvoton-wpcm450*
++F: arch/arm/mach-npcm/wpcm450.c
++F: drivers/*/*wpcm*
++
++ARM/OPENMOKO NEO FREERUNNER (GTA02) MACHINE SUPPORT
++L: openmoko-kernel@lists.openmoko.org (subscribers-only)
++S: Orphan
++W: http://wiki.openmoko.org/wiki/Neo_FreeRunner
++F: arch/arm/mach-s3c/gta02.h
++F: arch/arm/mach-s3c/mach-gta02.c
++
++ARM/Orion SoC/Technologic Systems TS-78xx platform support
++M: Alexander Clouter <alex@digriz.org.uk>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++W: http://www.digriz.org.uk/ts78xx/kernel
++F: arch/arm/mach-orion5x/ts78xx-*
++
++ARM/OXNAS platform support
++M: Neil Armstrong <narmstrong@baylibre.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-oxnas@groups.io (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/boot/dts/ox8*.dts*
++F: arch/arm/mach-oxnas/
++F: drivers/power/reset/oxnas-restart.c
++N: oxnas
++
++ARM/PALM TREO SUPPORT
++M: Tomas Cech <sleep_walker@suse.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++W: http://hackndev.com
++F: arch/arm/mach-pxa/palmtreo.*
++
++ARM/PALMTX,PALMT5,PALMLD,PALMTE2,PALMTC SUPPORT
++M: Marek Vasut <marek.vasut@gmail.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++W: http://hackndev.com
++F: arch/arm/mach-pxa/include/mach/palmld.h
++F: arch/arm/mach-pxa/include/mach/palmtc.h
++F: arch/arm/mach-pxa/include/mach/palmtx.h
++F: arch/arm/mach-pxa/palmld.c
++F: arch/arm/mach-pxa/palmt5.*
++F: arch/arm/mach-pxa/palmtc.c
++F: arch/arm/mach-pxa/palmte2.*
++F: arch/arm/mach-pxa/palmtx.c
++
++ARM/PALMZ72 SUPPORT
++M: Sergey Lapin <slapin@ossfans.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++W: http://hackndev.com
++F: arch/arm/mach-pxa/palmz72.*
++
++ARM/PLEB SUPPORT
++M: Peter Chubb <pleb@gelato.unsw.edu.au>
++S: Maintained
++W: http://www.disy.cse.unsw.edu.au/Hardware/PLEB
++
++ARM/PT DIGITAL BOARD PORT
++M: Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++W: http://www.armlinux.org.uk/
++
++ARM/QUALCOMM SUPPORT
++M: Andy Gross <agross@kernel.org>
++M: Bjorn Andersson <bjorn.andersson@linaro.org>
++L: linux-arm-msm@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux.git
++F: Documentation/devicetree/bindings/*/qcom*
++F: Documentation/devicetree/bindings/soc/qcom/
++F: arch/arm/boot/dts/qcom-*.dts
++F: arch/arm/boot/dts/qcom-*.dtsi
++F: arch/arm/mach-qcom/
++F: arch/arm64/boot/dts/qcom/
++F: drivers/*/*/qcom*
++F: drivers/*/*/qcom/
++F: drivers/*/pm8???-*
++F: drivers/*/qcom*
++F: drivers/*/qcom/
++F: drivers/bluetooth/btqcomsmd.c
++F: drivers/clocksource/timer-qcom.c
++F: drivers/cpuidle/cpuidle-qcom-spm.c
++F: drivers/extcon/extcon-qcom*
++F: drivers/i2c/busses/i2c-qcom-geni.c
++F: drivers/i2c/busses/i2c-qup.c
++F: drivers/iommu/msm*
++F: drivers/mfd/ssbi.c
++F: drivers/mmc/host/mmci_qcom*
++F: drivers/mmc/host/sdhci-msm.c
++F: drivers/pci/controller/dwc/pcie-qcom.c
++F: drivers/phy/qualcomm/
++F: drivers/power/*/msm*
++F: drivers/reset/reset-qcom-*
++F: drivers/scsi/ufs/ufs-qcom*
++F: drivers/spi/spi-geni-qcom.c
++F: drivers/spi/spi-qcom-qspi.c
++F: drivers/spi/spi-qup.c
++F: drivers/tty/serial/msm_serial.c
++F: drivers/usb/dwc3/dwc3-qcom.c
++F: include/dt-bindings/*/qcom*
++F: include/linux/*/qcom*
++F: include/linux/soc/qcom/
++
++ARM/RADISYS ENP2611 MACHINE SUPPORT
++M: Lennert Buytenhek <kernel@wantstofly.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++
++ARM/RDA MICRO ARCHITECTURE
++M: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-unisoc@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/arm/rda.yaml
++F: Documentation/devicetree/bindings/gpio/gpio-rda.yaml
++F: Documentation/devicetree/bindings/interrupt-controller/rda,8810pl-intc.txt
++F: Documentation/devicetree/bindings/serial/rda,8810pl-uart.txt
++F: Documentation/devicetree/bindings/timer/rda,8810pl-timer.txt
++F: arch/arm/boot/dts/rda8810pl-*
++F: drivers/clocksource/timer-rda.c
++F: drivers/gpio/gpio-rda.c
++F: drivers/irqchip/irq-rda-intc.c
++F: drivers/tty/serial/rda-uart.c
++
++ARM/REALTEK ARCHITECTURE
++M: Andreas Färber <afaerber@suse.de>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-realtek-soc@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/arm/realtek.yaml
++F: arch/arm/boot/dts/rtd*
++F: arch/arm/mach-realtek/
++F: arch/arm64/boot/dts/realtek/
++
++ARM/RENESAS ARM64 ARCHITECTURE
++M: Geert Uytterhoeven <geert+renesas@glider.be>
++M: Magnus Damm <magnus.damm@gmail.com>
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++Q: http://patchwork.kernel.org/project/linux-renesas-soc/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel.git next
++F: Documentation/devicetree/bindings/arm/renesas.yaml
++F: arch/arm64/boot/dts/renesas/
++F: drivers/soc/renesas/
++F: include/linux/soc/renesas/
++
++ARM/RISCPC ARCHITECTURE
++M: Russell King <linux@armlinux.org.uk>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++W: http://www.armlinux.org.uk/
++F: arch/arm/include/asm/hardware/entry-macro-iomd.S
++F: arch/arm/include/asm/hardware/ioc.h
++F: arch/arm/include/asm/hardware/iomd.h
++F: arch/arm/include/asm/hardware/memc.h
++F: arch/arm/mach-rpc/
++F: drivers/net/ethernet/8390/etherh.c
++F: drivers/net/ethernet/i825xx/ether1*
++F: drivers/net/ethernet/seeq/ether3*
++F: drivers/scsi/arm/
++
++ARM/Rockchip SoC support
++M: Heiko Stuebner <heiko@sntech.de>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-rockchip@lists.infradead.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git
++F: Documentation/devicetree/bindings/i2c/i2c-rk3x.yaml
++F: Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml
++F: Documentation/devicetree/bindings/spi/spi-rockchip.yaml
++F: arch/arm/boot/dts/rk3*
++F: arch/arm/boot/dts/rv1108*
++F: arch/arm/mach-rockchip/
++F: drivers/*/*/*rockchip*
++F: drivers/*/*rockchip*
++F: drivers/clk/rockchip/
++F: drivers/i2c/busses/i2c-rk3x.c
++F: sound/soc/rockchip/
++N: rockchip
++
++ARM/SAMSUNG S3C, S5P AND EXYNOS ARM ARCHITECTURES
++M: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-samsung-soc@vger.kernel.org
++S: Maintained
++Q: https://patchwork.kernel.org/project/linux-samsung-soc/list/
++F: Documentation/arm/samsung/
++F: Documentation/devicetree/bindings/arm/samsung/
++F: Documentation/devicetree/bindings/power/pd-samsung.yaml
++F: arch/arm/boot/dts/exynos*
++F: arch/arm/boot/dts/s3c*
++F: arch/arm/boot/dts/s5p*
++F: arch/arm/mach-exynos*/
++F: arch/arm/mach-s3c/
++F: arch/arm/mach-s5p*/
++F: arch/arm64/boot/dts/exynos/
++F: drivers/*/*/*s3c24*
++F: drivers/*/*s3c24*
++F: drivers/*/*s3c64xx*
++F: drivers/*/*s5pv210*
++F: drivers/clocksource/samsung_pwm_timer.c
++F: drivers/memory/samsung/
++F: drivers/pwm/pwm-samsung.c
++F: drivers/soc/samsung/
++F: drivers/tty/serial/samsung*
++F: include/clocksource/samsung_pwm.h
++F: include/linux/platform_data/*s3c*
++F: include/linux/serial_s3c.h
++F: include/linux/soc/samsung/
++N: exynos
++N: s3c2410
++N: s3c64xx
++N: s5pv210
++
++ARM/SAMSUNG S5P SERIES 2D GRAPHICS ACCELERATION (G2D) SUPPORT
++M: Andrzej Hajda <a.hajda@samsung.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/platform/s5p-g2d/
++
++ARM/SAMSUNG S5P SERIES HDMI CEC SUBSYSTEM SUPPORT
++M: Marek Szyprowski <m.szyprowski@samsung.com>
++L: linux-samsung-soc@vger.kernel.org
++L: linux-media@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/media/s5p-cec.txt
++F: drivers/media/cec/platform/s5p/
++
++ARM/SAMSUNG S5P SERIES JPEG CODEC SUPPORT
++M: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
++M: Jacek Anaszewski <jacek.anaszewski@gmail.com>
++M: Sylwester Nawrocki <s.nawrocki@samsung.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/platform/s5p-jpeg/
++
++ARM/SAMSUNG S5P SERIES Multi Format Codec (MFC) SUPPORT
++M: Andrzej Hajda <a.hajda@samsung.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/platform/s5p-mfc/
++
++ARM/SHMOBILE ARM ARCHITECTURE
++M: Geert Uytterhoeven <geert+renesas@glider.be>
++M: Magnus Damm <magnus.damm@gmail.com>
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++Q: http://patchwork.kernel.org/project/linux-renesas-soc/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel.git next
++F: Documentation/devicetree/bindings/arm/renesas.yaml
++F: arch/arm/boot/dts/emev2*
++F: arch/arm/boot/dts/gr-peach*
++F: arch/arm/boot/dts/iwg20d-q7*
++F: arch/arm/boot/dts/r7s*
++F: arch/arm/boot/dts/r8a*
++F: arch/arm/boot/dts/r9a*
++F: arch/arm/boot/dts/sh*
++F: arch/arm/configs/shmobile_defconfig
++F: arch/arm/include/debug/renesas-scif.S
++F: arch/arm/mach-shmobile/
++F: drivers/soc/renesas/
++F: include/linux/soc/renesas/
++
++ARM/SOCFPGA ARCHITECTURE
++M: Dinh Nguyen <dinguyen@kernel.org>
++S: Maintained
++W: http://www.rocketboards.org
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux.git
++F: arch/arm/boot/dts/socfpga*
++F: arch/arm/configs/socfpga_defconfig
++F: arch/arm/mach-socfpga/
++F: arch/arm64/boot/dts/altera/
++F: arch/arm64/boot/dts/intel/
++
++ARM/SOCFPGA CLOCK FRAMEWORK SUPPORT
++M: Dinh Nguyen <dinguyen@kernel.org>
++S: Maintained
++F: drivers/clk/socfpga/
++
++ARM/SOCFPGA EDAC SUPPORT
++M: Dinh Nguyen <dinguyen@kernel.org>
++S: Maintained
++F: drivers/edac/altera_edac.[ch]
++
++ARM/SPREADTRUM SoC SUPPORT
++M: Orson Zhai <orsonzhai@gmail.com>
++M: Baolin Wang <baolin.wang7@gmail.com>
++M: Chunyan Zhang <zhang.lyra@gmail.com>
++S: Maintained
++F: arch/arm64/boot/dts/sprd
++N: sprd
++N: sc27xx
++N: sc2731
++
++ARM/STI ARCHITECTURE
++M: Patrice Chotard <patrice.chotard@foss.st.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++W: http://www.stlinux.com
++F: Documentation/devicetree/bindings/i2c/i2c-st.txt
++F: arch/arm/boot/dts/sti*
++F: arch/arm/mach-sti/
++F: drivers/ata/ahci_st.c
++F: drivers/char/hw_random/st-rng.c
++F: drivers/clocksource/arm_global_timer.c
++F: drivers/clocksource/clksrc_st_lpc.c
++F: drivers/cpufreq/sti-cpufreq.c
++F: drivers/dma/st_fdma*
++F: drivers/i2c/busses/i2c-st.c
++F: drivers/media/platform/sti/c8sectpfe/
++F: drivers/media/rc/st_rc.c
++F: drivers/mmc/host/sdhci-st.c
++F: drivers/phy/st/phy-miphy28lp.c
++F: drivers/phy/st/phy-stih407-usb.c
++F: drivers/pinctrl/pinctrl-st.c
++F: drivers/remoteproc/st_remoteproc.c
++F: drivers/remoteproc/st_slim_rproc.c
++F: drivers/reset/sti/
++F: drivers/rtc/rtc-st-lpc.c
++F: drivers/tty/serial/st-asc.c
++F: drivers/usb/dwc3/dwc3-st.c
++F: drivers/usb/host/ehci-st.c
++F: drivers/usb/host/ohci-st.c
++F: drivers/watchdog/st_lpc_wdt.c
++F: include/linux/remoteproc/st_slim_rproc.h
++
++ARM/STM32 ARCHITECTURE
++M: Maxime Coquelin <mcoquelin.stm32@gmail.com>
++M: Alexandre Torgue <alexandre.torgue@foss.st.com>
++L: linux-stm32@st-md-mailman.stormreply.com (moderated for non-subscribers)
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32.git stm32-next
++F: arch/arm/boot/dts/stm32*
++F: arch/arm/mach-stm32/
++F: drivers/clocksource/armv7m_systick.c
++N: stm32
++N: stm
++
++ARM/Synaptics SoC support
++M: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
++M: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/boot/dts/berlin*
++F: arch/arm/mach-berlin/
++F: arch/arm64/boot/dts/synaptics/
++
++ARM/TECHNOLOGIC SYSTEMS TS7250 MACHINE SUPPORT
++M: Lennert Buytenhek <kernel@wantstofly.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++
++ARM/TEGRA HDMI CEC SUBSYSTEM SUPPORT
++M: Hans Verkuil <hverkuil-cisco@xs4all.nl>
++L: linux-tegra@vger.kernel.org
++L: linux-media@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/media/tegra-cec.txt
++F: drivers/media/cec/platform/tegra/
++
++ARM/TETON BGA MACHINE SUPPORT
++M: "Mark F. Brown" <mark.brown314@gmail.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++
++ARM/TEXAS INSTRUMENT AEMIF/EMIF DRIVERS
++M: Santosh Shilimkar <ssantosh@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: drivers/memory/*emif*
++
++ARM/TEXAS INSTRUMENT KEYSTONE ARCHITECTURE
++M: Santosh Shilimkar <ssantosh@kernel.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone.git
++F: arch/arm/boot/dts/keystone-*
++F: arch/arm/mach-keystone/
++
++ARM/TEXAS INSTRUMENT KEYSTONE CLOCK FRAMEWORK
++M: Santosh Shilimkar <ssantosh@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: drivers/clk/keystone/
++
++ARM/TEXAS INSTRUMENT KEYSTONE CLOCKSOURCE
++M: Santosh Shilimkar <ssantosh@kernel.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: drivers/clocksource/timer-keystone.c
++
++ARM/TEXAS INSTRUMENT KEYSTONE RESET DRIVER
++M: Santosh Shilimkar <ssantosh@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: drivers/power/reset/keystone-reset.c
++
++ARM/TEXAS INSTRUMENTS K3 ARCHITECTURE
++M: Nishanth Menon <nm@ti.com>
++M: Vignesh Raghavendra <vigneshr@ti.com>
++M: Tero Kristo <kristo@kernel.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++F: Documentation/devicetree/bindings/arm/ti/k3.yaml
++F: arch/arm64/boot/dts/ti/Makefile
++F: arch/arm64/boot/dts/ti/k3-*
++F: include/dt-bindings/pinctrl/k3.h
++
++ARM/THECUS N2100 MACHINE SUPPORT
++M: Lennert Buytenhek <kernel@wantstofly.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++
++ARM/TOSA MACHINE SUPPORT
++M: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
++M: Dirk Opfer <dirk@opfer-online.de>
++S: Maintained
++
++ARM/TOSHIBA VISCONTI ARCHITECTURE
++M: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/iwamatsu/linux-visconti.git
++F: Documentation/devicetree/bindings/arm/toshiba.yaml
++F: Documentation/devicetree/bindings/net/toshiba,visconti-dwmac.yaml
++F: Documentation/devicetree/bindings/gpio/toshiba,gpio-visconti.yaml
++F: Documentation/devicetree/bindings/pci/toshiba,visconti-pcie.yaml
++F: Documentation/devicetree/bindings/pinctrl/toshiba,tmpv7700-pinctrl.yaml
++F: Documentation/devicetree/bindings/watchdog/toshiba,visconti-wdt.yaml
++F: arch/arm64/boot/dts/toshiba/
++F: drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c
++F: drivers/gpio/gpio-visconti.c
++F: drivers/pci/controller/dwc/pcie-visconti.c
++F: drivers/pinctrl/visconti/
++F: drivers/watchdog/visconti_wdt.c
++N: visconti
++
++ARM/UNIPHIER ARCHITECTURE
++M: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
++M: Masami Hiramatsu <mhiramat@kernel.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/arm/socionext/uniphier.yaml
++F: Documentation/devicetree/bindings/gpio/socionext,uniphier-gpio.yaml
++F: Documentation/devicetree/bindings/pinctrl/socionext,uniphier-pinctrl.yaml
++F: arch/arm/boot/dts/uniphier*
++F: arch/arm/include/asm/hardware/cache-uniphier.h
++F: arch/arm/mach-uniphier/
++F: arch/arm/mm/cache-uniphier.c
++F: arch/arm64/boot/dts/socionext/uniphier*
++F: drivers/bus/uniphier-system-bus.c
++F: drivers/clk/uniphier/
++F: drivers/dma/uniphier-mdmac.c
++F: drivers/gpio/gpio-uniphier.c
++F: drivers/i2c/busses/i2c-uniphier*
++F: drivers/irqchip/irq-uniphier-aidet.c
++F: drivers/mmc/host/uniphier-sd.c
++F: drivers/pinctrl/uniphier/
++F: drivers/reset/reset-uniphier.c
++F: drivers/tty/serial/8250/8250_uniphier.c
++N: uniphier
++
++ARM/VERSATILE EXPRESS PLATFORM
++M: Liviu Dudau <liviu.dudau@arm.com>
++M: Sudeep Holla <sudeep.holla@arm.com>
++M: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: */*/*/vexpress*
++F: */*/vexpress*
++F: arch/arm/boot/dts/vexpress*
++F: arch/arm/mach-vexpress/
++F: arch/arm64/boot/dts/arm/
++F: drivers/clk/versatile/clk-vexpress-osc.c
++F: drivers/clocksource/timer-versatile.c
++N: mps2
++
++ARM/VFP SUPPORT
++M: Russell King <linux@armlinux.org.uk>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++W: http://www.armlinux.org.uk/
++F: arch/arm/vfp/
++
++ARM/VOIPAC PXA270 SUPPORT
++M: Marek Vasut <marek.vasut@gmail.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/mach-pxa/include/mach/vpac270.h
++F: arch/arm/mach-pxa/vpac270.c
++
++ARM/VT8500 ARM ARCHITECTURE
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Orphan
++F: Documentation/devicetree/bindings/i2c/i2c-wmt.txt
++F: arch/arm/mach-vt8500/
++F: drivers/clocksource/timer-vt8500.c
++F: drivers/i2c/busses/i2c-wmt.c
++F: drivers/mmc/host/wmt-sdmmc.c
++F: drivers/pwm/pwm-vt8500.c
++F: drivers/rtc/rtc-vt8500.c
++F: drivers/tty/serial/vt8500_serial.c
++F: drivers/usb/host/ehci-platform.c
++F: drivers/usb/host/uhci-platform.c
++F: drivers/video/fbdev/vt8500lcdfb.*
++F: drivers/video/fbdev/wm8505fb*
++F: drivers/video/fbdev/wmt_ge_rops.*
++
++ARM/ZIPIT Z2 SUPPORT
++M: Marek Vasut <marek.vasut@gmail.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/mach-pxa/include/mach/z2.h
++F: arch/arm/mach-pxa/z2.c
++
++ARM/ZYNQ ARCHITECTURE
++M: Michal Simek <michal.simek@xilinx.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++W: http://wiki.xilinx.com
++T: git https://github.com/Xilinx/linux-xlnx.git
++F: Documentation/devicetree/bindings/i2c/cdns,i2c-r1p10.yaml
++F: Documentation/devicetree/bindings/i2c/xlnx,xps-iic-2.00.a.yaml
++F: Documentation/devicetree/bindings/spi/xlnx,zynq-qspi.yaml
++F: arch/arm/mach-zynq/
++F: drivers/clocksource/timer-cadence-ttc.c
++F: drivers/cpuidle/cpuidle-zynq.c
++F: drivers/edac/synopsys_edac.c
++F: drivers/i2c/busses/i2c-cadence.c
++F: drivers/i2c/busses/i2c-xiic.c
++F: drivers/mmc/host/sdhci-of-arasan.c
++N: zynq
++N: xilinx
++
++ARM64 PORT (AARCH64 ARCHITECTURE)
++M: Catalin Marinas <catalin.marinas@arm.com>
++M: Will Deacon <will@kernel.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git
++F: Documentation/arm64/
++F: arch/arm64/
++F: tools/testing/selftests/arm64/
++X: arch/arm64/boot/dts/
++
++ARROW SPEEDCHIPS XRS7000 SERIES ETHERNET SWITCH DRIVER
++M: George McCollister <george.mccollister@gmail.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/dsa/arrow,xrs700x.yaml
++F: drivers/net/dsa/xrs700x/*
++F: net/dsa/tag_xrs700x.c
++
++AS3645A LED FLASH CONTROLLER DRIVER
++M: Sakari Ailus <sakari.ailus@iki.fi>
++L: linux-leds@vger.kernel.org
++S: Maintained
++F: drivers/leds/flash/leds-as3645a.c
++
++ASAHI KASEI AK7375 LENS VOICE COIL DRIVER
++M: Tianshu Qiu <tian.shu.qiu@intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/ak7375.txt
++F: drivers/media/i2c/ak7375.c
++
++ASAHI KASEI AK8974 DRIVER
++M: Linus Walleij <linus.walleij@linaro.org>
++L: linux-iio@vger.kernel.org
++S: Supported
++W: http://www.akm.com/
++F: drivers/iio/magnetometer/ak8974.c
++
++ASC7621 HARDWARE MONITOR DRIVER
++M: George Joseph <george.joseph@fairview5.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/asc7621.rst
++F: drivers/hwmon/asc7621.c
++
++ASPEED PINCTRL DRIVERS
++M: Andrew Jeffery <andrew@aj.id.au>
++L: linux-aspeed@lists.ozlabs.org (moderated for non-subscribers)
++L: openbmc@lists.ozlabs.org (moderated for non-subscribers)
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/pinctrl/aspeed,*
++F: drivers/pinctrl/aspeed/
++
++ASPEED SCU INTERRUPT CONTROLLER DRIVER
++M: Eddie James <eajames@linux.ibm.com>
++L: linux-aspeed@lists.ozlabs.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/interrupt-controller/aspeed,ast2xxx-scu-ic.txt
++F: drivers/irqchip/irq-aspeed-scu-ic.c
++F: include/dt-bindings/interrupt-controller/aspeed-scu-ic.h
++
++ASPEED SD/MMC DRIVER
++M: Andrew Jeffery <andrew@aj.id.au>
++L: linux-aspeed@lists.ozlabs.org (moderated for non-subscribers)
++L: openbmc@lists.ozlabs.org (moderated for non-subscribers)
++L: linux-mmc@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/mmc/aspeed,sdhci.yaml
++F: drivers/mmc/host/sdhci-of-aspeed*
++
++ASPEED VIDEO ENGINE DRIVER
++M: Eddie James <eajames@linux.ibm.com>
++L: linux-media@vger.kernel.org
++L: openbmc@lists.ozlabs.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/media/aspeed-video.txt
++F: drivers/media/platform/aspeed-video.c
++
++ASUS NOTEBOOKS AND EEEPC ACPI/WMI EXTRAS DRIVERS
++M: Corentin Chary <corentin.chary@gmail.com>
++L: acpi4asus-user@lists.sourceforge.net
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++W: http://acpi4asus.sf.net
++F: drivers/platform/x86/asus*.c
++F: drivers/platform/x86/eeepc*.c
++
++ASUS WIRELESS RADIO CONTROL DRIVER
++M: João Paulo Rechi Vita <jprvita@gmail.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/asus-wireless.c
++
++ASYMMETRIC KEYS
++M: David Howells <dhowells@redhat.com>
++L: keyrings@vger.kernel.org
++S: Maintained
++F: Documentation/crypto/asymmetric-keys.rst
++F: crypto/asymmetric_keys/
++F: include/crypto/pkcs7.h
++F: include/crypto/public_key.h
++F: include/linux/verification.h
++
++ASYNCHRONOUS TRANSFERS/TRANSFORMS (IOAT) API
++R: Dan Williams <dan.j.williams@intel.com>
++S: Odd fixes
++W: http://sourceforge.net/projects/xscaleiop
++F: Documentation/crypto/async-tx-api.rst
++F: crypto/async_tx/
++F: include/linux/async_tx.h
++
++AT24 EEPROM DRIVER
++M: Bartosz Golaszewski <brgl@bgdev.pl>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux.git
++F: Documentation/devicetree/bindings/eeprom/at24.yaml
++F: drivers/misc/eeprom/at24.c
++
++ATA OVER ETHERNET (AOE) DRIVER
++M: "Justin Sanders" <justin@coraid.com>
++S: Supported
++W: http://www.openaoe.org/
++F: Documentation/admin-guide/aoe/
++F: drivers/block/aoe/
++
++ATC260X PMIC MFD DRIVER
++M: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
++M: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
++L: linux-actions@lists.infradead.org
++S: Maintained
++F: Documentation/devicetree/bindings/mfd/actions,atc260x.yaml
++F: drivers/input/misc/atc260x-onkey.c
++F: drivers/mfd/atc260*
++F: drivers/power/reset/atc260x-poweroff.c
++F: drivers/regulator/atc260x-regulator.c
++F: include/linux/mfd/atc260x/*
++
++ATHEROS 71XX/9XXX GPIO DRIVER
++M: Alban Bedel <albeu@free.fr>
++S: Maintained
++W: https://github.com/AlbanBedel/linux
++T: git git://github.com/AlbanBedel/linux
++F: Documentation/devicetree/bindings/gpio/gpio-ath79.txt
++F: drivers/gpio/gpio-ath79.c
++
++ATHEROS 71XX/9XXX USB PHY DRIVER
++M: Alban Bedel <albeu@free.fr>
++S: Maintained
++W: https://github.com/AlbanBedel/linux
++T: git git://github.com/AlbanBedel/linux
++F: Documentation/devicetree/bindings/phy/phy-ath79-usb.txt
++F: drivers/phy/qualcomm/phy-ath79-usb.c
++
++ATHEROS ATH GENERIC UTILITIES
++M: Kalle Valo <kvalo@codeaurora.org>
++L: linux-wireless@vger.kernel.org
++S: Supported
++F: drivers/net/wireless/ath/*
++
++ATHEROS ATH5K WIRELESS DRIVER
++M: Jiri Slaby <jirislaby@kernel.org>
++M: Nick Kossifidis <mickflemm@gmail.com>
++M: Luis Chamberlain <mcgrof@kernel.org>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++W: https://wireless.wiki.kernel.org/en/users/Drivers/ath5k
++F: drivers/net/wireless/ath/ath5k/
++
++ATHEROS ATH6KL WIRELESS DRIVER
++M: Kalle Valo <kvalo@codeaurora.org>
++L: linux-wireless@vger.kernel.org
++S: Supported
++W: https://wireless.wiki.kernel.org/en/users/Drivers/ath6kl
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
++F: drivers/net/wireless/ath/ath6kl/
++
++ATI_REMOTE2 DRIVER
++M: Ville Syrjala <syrjala@sci.fi>
++S: Maintained
++F: drivers/input/misc/ati_remote2.c
++
++ATK0110 HWMON DRIVER
++M: Luca Tettamanti <kronos.it@gmail.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: drivers/hwmon/asus_atk0110.c
++
++ATLX ETHERNET DRIVERS
++M: Chris Snook <chris.snook@gmail.com>
++L: netdev@vger.kernel.org
++S: Maintained
++W: http://sourceforge.net/projects/atl1
++W: http://atl1.sourceforge.net
++F: drivers/net/ethernet/atheros/
++
++ATM
++M: Chas Williams <3chas3@gmail.com>
++L: linux-atm-general@lists.sourceforge.net (moderated for non-subscribers)
++L: netdev@vger.kernel.org
++S: Maintained
++W: http://linux-atm.sourceforge.net
++F: drivers/atm/
++F: include/linux/atm*
++F: include/uapi/linux/atm*
++
++ATMEL MACB ETHERNET DRIVER
++M: Nicolas Ferre <nicolas.ferre@microchip.com>
++M: Claudiu Beznea <claudiu.beznea@microchip.com>
++S: Supported
++F: drivers/net/ethernet/cadence/
++
++ATMEL MAXTOUCH DRIVER
++M: Nick Dyer <nick@shmanahar.org>
++S: Maintained
++T: git git://github.com/ndyer/linux.git
++F: Documentation/devicetree/bindings/input/atmel,maxtouch.yaml
++F: drivers/input/touchscreen/atmel_mxt_ts.c
++
++ATMEL WIRELESS DRIVER
++M: Simon Kelley <simon@thekelleys.org.uk>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++W: http://www.thekelleys.org.uk/atmel
++W: http://atmelwlandriver.sourceforge.net/
++F: drivers/net/wireless/atmel/atmel*
++
++ATOMIC INFRASTRUCTURE
++M: Will Deacon <will@kernel.org>
++M: Peter Zijlstra <peterz@infradead.org>
++R: Boqun Feng <boqun.feng@gmail.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: arch/*/include/asm/atomic*.h
++F: include/*/atomic*.h
++F: include/linux/refcount.h
++F: Documentation/atomic_*.txt
++F: scripts/atomic/
++
++ATTO EXPRESSSAS SAS/SATA RAID SCSI DRIVER
++M: Bradley Grove <linuxdrivers@attotech.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++W: http://www.attotech.com
++F: drivers/scsi/esas2r
++
++ATUSB IEEE 802.15.4 RADIO DRIVER
++M: Stefan Schmidt <stefan@datenfreihafen.org>
++L: linux-wpan@vger.kernel.org
++S: Maintained
++F: drivers/net/ieee802154/at86rf230.h
++F: drivers/net/ieee802154/atusb.c
++F: drivers/net/ieee802154/atusb.h
++
++AUDIT SUBSYSTEM
++M: Paul Moore <paul@paul-moore.com>
++M: Eric Paris <eparis@redhat.com>
++L: linux-audit@redhat.com (moderated for non-subscribers)
++S: Supported
++W: https://github.com/linux-audit
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit.git
++F: include/asm-generic/audit_*.h
++F: include/linux/audit.h
++F: include/uapi/linux/audit.h
++F: kernel/audit*
++F: lib/*audit.c
++
++AUXILIARY DISPLAY DRIVERS
++M: Miguel Ojeda <ojeda@kernel.org>
++S: Maintained
++F: drivers/auxdisplay/
++F: include/linux/cfag12864b.h
++
++AVIA HX711 ANALOG DIGITAL CONVERTER IIO DRIVER
++M: Andreas Klinger <ak@it-klinger.de>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/iio/adc/avia-hx711.yaml
++F: drivers/iio/adc/hx711.c
++
++AX.25 NETWORK LAYER
++M: Ralf Baechle <ralf@linux-mips.org>
++L: linux-hams@vger.kernel.org
++S: Maintained
++W: http://www.linux-ax25.org/
++F: include/net/ax25.h
++F: include/uapi/linux/ax25.h
++F: net/ax25/
++
++AXENTIA ARM DEVICES
++M: Peter Rosin <peda@axentia.se>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/boot/dts/at91-linea.dtsi
++F: arch/arm/boot/dts/at91-natte.dtsi
++F: arch/arm/boot/dts/at91-nattis-2-natte-2.dts
++F: arch/arm/boot/dts/at91-tse850-3.dts
++
++AXENTIA ASOC DRIVERS
++M: Peter Rosin <peda@axentia.se>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/sound/axentia,*
++F: sound/soc/atmel/tse850-pcm5142.c
++
++AXI-FAN-CONTROL HARDWARE MONITOR DRIVER
++M: Nuno Sá <nuno.sa@analog.com>
++L: linux-hwmon@vger.kernel.org
++S: Supported
++W: http://ez.analog.com/community/linux-device-drivers
++F: Documentation/devicetree/bindings/hwmon/adi,axi-fan-control.yaml
++F: drivers/hwmon/axi-fan-control.c
++
++AXXIA I2C CONTROLLER
++M: Krzysztof Adamski <krzysztof.adamski@nokia.com>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/i2c/i2c-axxia.txt
++F: drivers/i2c/busses/i2c-axxia.c
++
++AZ6007 DVB DRIVER
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/usb/dvb-usb-v2/az6007.c
++
++AZTECH FM RADIO RECEIVER DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/radio-aztech*
++
++B43 WIRELESS DRIVER
++L: linux-wireless@vger.kernel.org
++L: b43-dev@lists.infradead.org
++S: Odd Fixes
++W: https://wireless.wiki.kernel.org/en/users/Drivers/b43
++F: drivers/net/wireless/broadcom/b43/
++
++B43LEGACY WIRELESS DRIVER
++M: Larry Finger <Larry.Finger@lwfinger.net>
++L: linux-wireless@vger.kernel.org
++L: b43-dev@lists.infradead.org
++S: Maintained
++W: https://wireless.wiki.kernel.org/en/users/Drivers/b43
++F: drivers/net/wireless/broadcom/b43legacy/
++
++BACKLIGHT CLASS/SUBSYSTEM
++M: Lee Jones <lee.jones@linaro.org>
++M: Daniel Thompson <daniel.thompson@linaro.org>
++M: Jingoo Han <jingoohan1@gmail.com>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight.git
++F: Documentation/ABI/stable/sysfs-class-backlight
++F: Documentation/ABI/testing/sysfs-class-backlight
++F: Documentation/devicetree/bindings/leds/backlight
++F: drivers/video/backlight/
++F: include/linux/backlight.h
++F: include/linux/pwm_backlight.h
++
++BATMAN ADVANCED
++M: Marek Lindner <mareklindner@neomailbox.ch>
++M: Simon Wunderlich <sw@simonwunderlich.de>
++M: Antonio Quartulli <a@unstable.cc>
++M: Sven Eckelmann <sven@narfation.org>
++L: b.a.t.m.a.n@lists.open-mesh.org (moderated for non-subscribers)
++S: Maintained
++W: https://www.open-mesh.org/
++Q: https://patchwork.open-mesh.org/project/batman/list/
++B: https://www.open-mesh.org/projects/batman-adv/issues
++C: ircs://irc.hackint.org/batadv
++T: git https://git.open-mesh.org/linux-merge.git
++F: Documentation/networking/batman-adv.rst
++F: include/uapi/linux/batadv_packet.h
++F: include/uapi/linux/batman_adv.h
++F: net/batman-adv/
++
++BAYCOM/HDLCDRV DRIVERS FOR AX.25
++M: Thomas Sailer <t.sailer@alumni.ethz.ch>
++L: linux-hams@vger.kernel.org
++S: Maintained
++W: http://www.baycom.org/~tom/ham/ham.html
++F: drivers/net/hamradio/baycom*
++
++BCACHE (BLOCK LAYER CACHE)
++M: Coly Li <colyli@suse.de>
++M: Kent Overstreet <kent.overstreet@gmail.com>
++L: linux-bcache@vger.kernel.org
++S: Maintained
++W: http://bcache.evilpiepirate.org
++C: irc://irc.oftc.net/bcache
++F: drivers/md/bcache/
++
++BDISP ST MEDIA DRIVER
++M: Fabien Dessenne <fabien.dessenne@foss.st.com>
++L: linux-media@vger.kernel.org
++S: Supported
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/platform/sti/bdisp
++
++BECKHOFF CX5020 ETHERCAT MASTER DRIVER
++M: Dariusz Marcinkiewicz <reksio@newterm.pl>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/ec_bhf.c
++
++BEFS FILE SYSTEM
++M: Luis de Bethencourt <luisbg@kernel.org>
++M: Salah Triki <salah.triki@gmail.com>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/luisbg/linux-befs.git
++F: Documentation/filesystems/befs.rst
++F: fs/befs/
++
++BFQ I/O SCHEDULER
++M: Paolo Valente <paolo.valente@linaro.org>
++M: Jens Axboe <axboe@kernel.dk>
++L: linux-block@vger.kernel.org
++S: Maintained
++F: Documentation/block/bfq-iosched.rst
++F: block/bfq-*
++
++BFS FILE SYSTEM
++M: "Tigran A. Aivazian" <aivazian.tigran@gmail.com>
++S: Maintained
++F: Documentation/filesystems/bfs.rst
++F: fs/bfs/
++F: include/uapi/linux/bfs_fs.h
++
++BITMAP API
++M: Yury Norov <yury.norov@gmail.com>
++R: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
++R: Rasmus Villemoes <linux@rasmusvillemoes.dk>
++S: Maintained
++F: include/asm-generic/bitops/find.h
++F: include/linux/bitmap.h
++F: lib/bitmap.c
++F: lib/find_bit.c
++F: lib/find_bit_benchmark.c
++F: lib/test_bitmap.c
++F: tools/include/asm-generic/bitops/find.h
++F: tools/include/linux/bitmap.h
++F: tools/lib/bitmap.c
++F: tools/lib/find_bit.c
++
++BLINKM RGB LED DRIVER
++M: Jan-Simon Moeller <jansimon.moeller@gmx.de>
++S: Maintained
++F: drivers/leds/leds-blinkm.c
++
++BLOCK LAYER
++M: Jens Axboe <axboe@kernel.dk>
++L: linux-block@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git
++F: block/
++F: drivers/block/
++F: include/linux/blk*
++F: kernel/trace/blktrace.c
++F: lib/sbitmap.c
++
++BLOCK2MTD DRIVER
++M: Joern Engel <joern@lazybastard.org>
++L: linux-mtd@lists.infradead.org
++S: Maintained
++F: drivers/mtd/devices/block2mtd.c
++
++BLUETOOTH DRIVERS
++M: Marcel Holtmann <marcel@holtmann.org>
++M: Johan Hedberg <johan.hedberg@gmail.com>
++M: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
++L: linux-bluetooth@vger.kernel.org
++S: Supported
++W: http://www.bluez.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git
++F: drivers/bluetooth/
++
++BLUETOOTH SUBSYSTEM
++M: Marcel Holtmann <marcel@holtmann.org>
++M: Johan Hedberg <johan.hedberg@gmail.com>
++M: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
++L: linux-bluetooth@vger.kernel.org
++S: Supported
++W: http://www.bluez.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git
++F: include/net/bluetooth/
++F: net/bluetooth/
++
++BONDING DRIVER
++M: Jay Vosburgh <j.vosburgh@gmail.com>
++M: Veaceslav Falico <vfalico@gmail.com>
++M: Andy Gospodarek <andy@greyhouse.net>
++L: netdev@vger.kernel.org
++S: Supported
++W: http://sourceforge.net/projects/bonding/
++F: drivers/net/bonding/
++F: include/net/bonding.h
++F: include/uapi/linux/if_bonding.h
++
++BOSCH SENSORTEC BMA400 ACCELEROMETER IIO DRIVER
++M: Dan Robertson <dan@dlrobertson.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/iio/accel/bosch,bma400.yaml
++F: drivers/iio/accel/bma400*
++
++BPF (Safe dynamic programs and tools)
++M: Alexei Starovoitov <ast@kernel.org>
++M: Daniel Borkmann <daniel@iogearbox.net>
++M: Andrii Nakryiko <andrii@kernel.org>
++R: Martin KaFai Lau <kafai@fb.com>
++R: Song Liu <songliubraving@fb.com>
++R: Yonghong Song <yhs@fb.com>
++R: John Fastabend <john.fastabend@gmail.com>
++R: KP Singh <kpsingh@kernel.org>
++L: netdev@vger.kernel.org
++L: bpf@vger.kernel.org
++S: Supported
++W: https://bpf.io/
++Q: https://patchwork.kernel.org/project/netdevbpf/list/?delegate=121173
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git
++F: Documentation/bpf/
++F: Documentation/networking/filter.rst
++F: Documentation/userspace-api/ebpf/
++F: arch/*/net/*
++F: include/linux/bpf*
++F: include/linux/btf*
++F: include/linux/filter.h
++F: include/trace/events/xdp.h
++F: include/uapi/linux/bpf*
++F: include/uapi/linux/btf*
++F: include/uapi/linux/filter.h
++F: kernel/bpf/
++F: kernel/trace/bpf_trace.c
++F: lib/test_bpf.c
++F: net/bpf/
++F: net/core/filter.c
++F: net/sched/act_bpf.c
++F: net/sched/cls_bpf.c
++F: samples/bpf/
++F: scripts/bpf_doc.py
++F: tools/bpf/
++F: tools/lib/bpf/
++F: tools/testing/selftests/bpf/
++N: bpf
++K: bpf
++
++BPF JIT for ARM
++M: Shubham Bansal <illusionist.neo@gmail.com>
++L: netdev@vger.kernel.org
++L: bpf@vger.kernel.org
++S: Maintained
++F: arch/arm/net/
++
++BPF JIT for ARM64
++M: Daniel Borkmann <daniel@iogearbox.net>
++M: Alexei Starovoitov <ast@kernel.org>
++M: Zi Shen Lim <zlim.lnx@gmail.com>
++L: netdev@vger.kernel.org
++L: bpf@vger.kernel.org
++S: Supported
++F: arch/arm64/net/
++
++BPF JIT for MIPS (32-BIT AND 64-BIT)
++M: Paul Burton <paulburton@kernel.org>
++L: netdev@vger.kernel.org
++L: bpf@vger.kernel.org
++S: Maintained
++F: arch/mips/net/
++
++BPF JIT for NFP NICs
++M: Jakub Kicinski <kuba@kernel.org>
++L: netdev@vger.kernel.org
++L: bpf@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/netronome/nfp/bpf/
++
++BPF JIT for POWERPC (32-BIT AND 64-BIT)
++M: Naveen N. Rao <naveen.n.rao@linux.ibm.com>
++L: netdev@vger.kernel.org
++L: bpf@vger.kernel.org
++S: Maintained
++F: arch/powerpc/net/
++
++BPF JIT for RISC-V (32-bit)
++M: Luke Nelson <luke.r.nels@gmail.com>
++M: Xi Wang <xi.wang@gmail.com>
++L: netdev@vger.kernel.org
++L: bpf@vger.kernel.org
++S: Maintained
++F: arch/riscv/net/
++X: arch/riscv/net/bpf_jit_comp64.c
++
++BPF JIT for RISC-V (64-bit)
++M: Björn Töpel <bjorn@kernel.org>
++L: netdev@vger.kernel.org
++L: bpf@vger.kernel.org
++S: Maintained
++F: arch/riscv/net/
++X: arch/riscv/net/bpf_jit_comp32.c
++
++BPF JIT for S390
++M: Ilya Leoshkevich <iii@linux.ibm.com>
++M: Heiko Carstens <hca@linux.ibm.com>
++M: Vasily Gorbik <gor@linux.ibm.com>
++L: netdev@vger.kernel.org
++L: bpf@vger.kernel.org
++S: Maintained
++F: arch/s390/net/
++X: arch/s390/net/pnet.c
++
++BPF JIT for SPARC (32-BIT AND 64-BIT)
++M: David S. Miller <davem@davemloft.net>
++L: netdev@vger.kernel.org
++L: bpf@vger.kernel.org
++S: Maintained
++F: arch/sparc/net/
++
++BPF JIT for X86 32-BIT
++M: Wang YanQing <udknight@gmail.com>
++L: netdev@vger.kernel.org
++L: bpf@vger.kernel.org
++S: Maintained
++F: arch/x86/net/bpf_jit_comp32.c
++
++BPF JIT for X86 64-BIT
++M: Alexei Starovoitov <ast@kernel.org>
++M: Daniel Borkmann <daniel@iogearbox.net>
++L: netdev@vger.kernel.org
++L: bpf@vger.kernel.org
++S: Supported
++F: arch/x86/net/
++X: arch/x86/net/bpf_jit_comp32.c
++
++BPF LSM (Security Audit and Enforcement using BPF)
++M: KP Singh <kpsingh@kernel.org>
++R: Florent Revest <revest@chromium.org>
++R: Brendan Jackman <jackmanb@chromium.org>
++L: bpf@vger.kernel.org
++S: Maintained
++F: Documentation/bpf/bpf_lsm.rst
++F: include/linux/bpf_lsm.h
++F: kernel/bpf/bpf_lsm.c
++F: security/bpf/
++
++BROADCOM B44 10/100 ETHERNET DRIVER
++M: Michael Chan <michael.chan@broadcom.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/broadcom/b44.*
++
++BROADCOM B53 ETHERNET SWITCH DRIVER
++M: Florian Fainelli <f.fainelli@gmail.com>
++L: netdev@vger.kernel.org
++L: openwrt-devel@lists.openwrt.org (subscribers-only)
++S: Supported
++F: Documentation/devicetree/bindings/net/dsa/brcm,b53.yaml
++F: drivers/net/dsa/b53/*
++F: include/linux/dsa/brcm.h
++F: include/linux/platform_data/b53.h
++
++BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE
++M: Nicolas Saenz Julienne <nsaenz@kernel.org>
++L: bcm-kernel-feedback-list@broadcom.com
++L: linux-rpi-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/nsaenz/linux-rpi.git
++F: Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
++F: drivers/pci/controller/pcie-brcmstb.c
++F: drivers/staging/vc04_services
++N: bcm2711
++N: bcm283*
++
++BROADCOM BCM281XX/BCM11XXX/BCM216XX ARM ARCHITECTURE
++M: Florian Fainelli <f.fainelli@gmail.com>
++M: Ray Jui <rjui@broadcom.com>
++M: Scott Branden <sbranden@broadcom.com>
++M: bcm-kernel-feedback-list@broadcom.com
++S: Maintained
++T: git git://github.com/broadcom/mach-bcm
++F: arch/arm/mach-bcm/
++N: bcm281*
++N: bcm113*
++N: bcm216*
++N: kona
++
++BROADCOM BCM47XX MIPS ARCHITECTURE
++M: Hauke Mehrtens <hauke@hauke-m.de>
++M: Rafał Miłecki <zajec5@gmail.com>
++L: linux-mips@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/mips/brcm/
++F: arch/mips/bcm47xx/*
++F: arch/mips/include/asm/mach-bcm47xx/*
++
++BROADCOM BCM4908 ETHERNET DRIVER
++M: Rafał Miłecki <rafal@milecki.pl>
++M: bcm-kernel-feedback-list@broadcom.com
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/brcm,bcm4908-enet.yaml
++F: drivers/net/ethernet/broadcom/bcm4908_enet.*
++F: drivers/net/ethernet/broadcom/unimac.h
++
++BROADCOM BCM5301X ARM ARCHITECTURE
++M: Hauke Mehrtens <hauke@hauke-m.de>
++M: Rafał Miłecki <zajec5@gmail.com>
++M: bcm-kernel-feedback-list@broadcom.com
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/boot/dts/bcm470*
++F: arch/arm/boot/dts/bcm5301*
++F: arch/arm/boot/dts/bcm953012*
++F: arch/arm/mach-bcm/bcm_5301x.c
++
++BROADCOM BCM53573 ARM ARCHITECTURE
++M: Rafał Miłecki <rafal@milecki.pl>
++L: bcm-kernel-feedback-list@broadcom.com
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/boot/dts/bcm47189*
++F: arch/arm/boot/dts/bcm53573*
++
++BROADCOM BCM63XX ARM ARCHITECTURE
++M: Florian Fainelli <f.fainelli@gmail.com>
++M: bcm-kernel-feedback-list@broadcom.com
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://github.com/broadcom/stblinux.git
++N: bcm63xx
++
++BROADCOM BCM63XX/BCM33XX UDC DRIVER
++M: Kevin Cernekee <cernekee@gmail.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: drivers/usb/gadget/udc/bcm63xx_udc.*
++
++BROADCOM BCM7XXX ARM ARCHITECTURE
++M: Florian Fainelli <f.fainelli@gmail.com>
++M: bcm-kernel-feedback-list@broadcom.com
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://github.com/broadcom/stblinux.git
++F: Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
++F: arch/arm/boot/dts/bcm7*.dts*
++F: arch/arm/include/asm/hardware/cache-b15-rac.h
++F: arch/arm/mach-bcm/*brcmstb*
++F: arch/arm/mm/cache-b15-rac.c
++F: drivers/bus/brcmstb_gisb.c
++F: drivers/pci/controller/pcie-brcmstb.c
++N: brcmstb
++
++BROADCOM BDC DRIVER
++M: Al Cooper <alcooperx@gmail.com>
++L: linux-usb@vger.kernel.org
++L: bcm-kernel-feedback-list@broadcom.com
++S: Maintained
++F: Documentation/devicetree/bindings/usb/brcm,bdc.txt
++F: drivers/usb/gadget/udc/bdc/
++
++BROADCOM BMIPS CPUFREQ DRIVER
++M: Markus Mayer <mmayer@broadcom.com>
++M: bcm-kernel-feedback-list@broadcom.com
++L: linux-pm@vger.kernel.org
++S: Maintained
++F: drivers/cpufreq/bmips-cpufreq.c
++
++BROADCOM BMIPS MIPS ARCHITECTURE
++M: Florian Fainelli <f.fainelli@gmail.com>
++L: bcm-kernel-feedback-list@broadcom.com
++L: linux-mips@vger.kernel.org
++S: Maintained
++T: git git://github.com/broadcom/stblinux.git
++F: arch/mips/bmips/*
++F: arch/mips/boot/dts/brcm/bcm*.dts*
++F: arch/mips/include/asm/mach-bmips/*
++F: arch/mips/kernel/*bmips*
++F: drivers/soc/bcm/bcm63xx
++F: drivers/irqchip/irq-bcm63*
++F: drivers/irqchip/irq-bcm7*
++F: drivers/irqchip/irq-brcmstb*
++F: include/linux/bcm963xx_nvram.h
++F: include/linux/bcm963xx_tag.h
++
++BROADCOM BNX2 GIGABIT ETHERNET DRIVER
++M: Rasesh Mody <rmody@marvell.com>
++M: GR-Linux-NIC-Dev@marvell.com
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/broadcom/bnx2.*
++F: drivers/net/ethernet/broadcom/bnx2_*
++
++BROADCOM BNX2FC 10 GIGABIT FCOE DRIVER
++M: Saurav Kashyap <skashyap@marvell.com>
++M: Javed Hasan <jhasan@marvell.com>
++M: GR-QLogic-Storage-Upstream@marvell.com
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: drivers/scsi/bnx2fc/
++
++BROADCOM BNX2I 1/10 GIGABIT iSCSI DRIVER
++M: Nilesh Javali <njavali@marvell.com>
++M: Manish Rangankar <mrangankar@marvell.com>
++M: GR-QLogic-Storage-Upstream@marvell.com
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: drivers/scsi/bnx2i/
++
++BROADCOM BNX2X 10 GIGABIT ETHERNET DRIVER
++M: Ariel Elior <aelior@marvell.com>
++M: Sudarsana Kalluru <skalluru@marvell.com>
++M: GR-everest-linux-l2@marvell.com
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/broadcom/bnx2x/
++
++BROADCOM BNXT_EN 50 GIGABIT ETHERNET DRIVER
++M: Michael Chan <michael.chan@broadcom.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/broadcom/bnxt/
++
++BROADCOM BRCM80211 IEEE802.11n WIRELESS DRIVER
++M: Arend van Spriel <aspriel@gmail.com>
++M: Franky Lin <franky.lin@broadcom.com>
++M: Hante Meuleman <hante.meuleman@broadcom.com>
++M: Chi-hsien Lin <chi-hsien.lin@infineon.com>
++M: Wright Feng <wright.feng@infineon.com>
++M: Chung-hsien Hsu <chung-hsien.hsu@infineon.com>
++L: linux-wireless@vger.kernel.org
++L: brcm80211-dev-list.pdl@broadcom.com
++L: SHA-cyfmac-dev-list@infineon.com
++S: Supported
++F: drivers/net/wireless/broadcom/brcm80211/
++
++BROADCOM BRCMSTB GPIO DRIVER
++M: Gregory Fong <gregory.0xf0@gmail.com>
++L: bcm-kernel-feedback-list@broadcom.com
++S: Supported
++F: Documentation/devicetree/bindings/gpio/brcm,brcmstb-gpio.txt
++F: drivers/gpio/gpio-brcmstb.c
++
++BROADCOM BRCMSTB I2C DRIVER
++M: Kamal Dasu <kdasu.kdev@gmail.com>
++L: linux-i2c@vger.kernel.org
++L: bcm-kernel-feedback-list@broadcom.com
++S: Supported
++F: Documentation/devicetree/bindings/i2c/brcm,brcmstb-i2c.yaml
++F: drivers/i2c/busses/i2c-brcmstb.c
++
++BROADCOM BRCMSTB UART DRIVER
++M: Al Cooper <alcooperx@gmail.com>
++L: linux-serial@vger.kernel.org
++L: bcm-kernel-feedback-list@broadcom.com
++S: Maintained
++F: Documentation/devicetree/bindings/serial/brcm,bcm7271-uart.yaml
++F: drivers/tty/serial/8250/8250_bcm7271.c
++
++BROADCOM BRCMSTB USB EHCI DRIVER
++M: Al Cooper <alcooperx@gmail.com>
++L: linux-usb@vger.kernel.org
++L: bcm-kernel-feedback-list@broadcom.com
++S: Maintained
++F: Documentation/devicetree/bindings/usb/brcm,bcm7445-ehci.yaml
++F: drivers/usb/host/ehci-brcm.*
++
++BROADCOM BRCMSTB USB PIN MAP DRIVER
++M: Al Cooper <alcooperx@gmail.com>
++L: linux-usb@vger.kernel.org
++L: bcm-kernel-feedback-list@broadcom.com
++S: Maintained
++F: Documentation/devicetree/bindings/usb/brcm,usb-pinmap.yaml
++F: drivers/usb/misc/brcmstb-usb-pinmap.c
++
++BROADCOM BRCMSTB USB2 and USB3 PHY DRIVER
++M: Al Cooper <alcooperx@gmail.com>
++L: linux-kernel@vger.kernel.org
++L: bcm-kernel-feedback-list@broadcom.com
++S: Maintained
++F: drivers/phy/broadcom/phy-brcm-usb*
++
++BROADCOM ETHERNET PHY DRIVERS
++M: Florian Fainelli <f.fainelli@gmail.com>
++L: bcm-kernel-feedback-list@broadcom.com
++L: netdev@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/net/broadcom-bcm87xx.txt
++F: drivers/net/phy/bcm*.[ch]
++F: drivers/net/phy/broadcom.c
++F: include/linux/brcmphy.h
++
++BROADCOM GENET ETHERNET DRIVER
++M: Doug Berger <opendmb@gmail.com>
++M: Florian Fainelli <f.fainelli@gmail.com>
++L: bcm-kernel-feedback-list@broadcom.com
++L: netdev@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/net/brcm,bcmgenet.txt
++F: Documentation/devicetree/bindings/net/brcm,unimac-mdio.txt
++F: drivers/net/ethernet/broadcom/genet/
++F: drivers/net/ethernet/broadcom/unimac.h
++F: drivers/net/mdio/mdio-bcm-unimac.c
++F: include/linux/platform_data/bcmgenet.h
++F: include/linux/platform_data/mdio-bcm-unimac.h
++
++BROADCOM IPROC ARM ARCHITECTURE
++M: Ray Jui <rjui@broadcom.com>
++M: Scott Branden <sbranden@broadcom.com>
++M: bcm-kernel-feedback-list@broadcom.com
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://github.com/broadcom/cygnus-linux.git
++F: arch/arm64/boot/dts/broadcom/northstar2/*
++F: arch/arm64/boot/dts/broadcom/stingray/*
++F: drivers/clk/bcm/clk-ns*
++F: drivers/clk/bcm/clk-sr*
++F: drivers/pinctrl/bcm/pinctrl-ns*
++F: include/dt-bindings/clock/bcm-sr*
++N: iproc
++N: cygnus
++N: bcm[-_]nsp
++N: bcm9113*
++N: bcm9583*
++N: bcm9585*
++N: bcm9586*
++N: bcm988312
++N: bcm113*
++N: bcm583*
++N: bcm585*
++N: bcm586*
++N: bcm88312
++N: hr2
++N: stingray
++
++BROADCOM IPROC GBIT ETHERNET DRIVER
++M: Rafał Miłecki <rafal@milecki.pl>
++M: bcm-kernel-feedback-list@broadcom.com
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/brcm,amac.txt
++F: drivers/net/ethernet/broadcom/bgmac*
++F: drivers/net/ethernet/broadcom/unimac.h
++
++BROADCOM KONA GPIO DRIVER
++M: Ray Jui <rjui@broadcom.com>
++L: bcm-kernel-feedback-list@broadcom.com
++S: Supported
++F: Documentation/devicetree/bindings/gpio/brcm,kona-gpio.txt
++F: drivers/gpio/gpio-bcm-kona.c
++
++BROADCOM MPI3 STORAGE CONTROLLER DRIVER
++M: Sathya Prakash Veerichetty <sathya.prakash@broadcom.com>
++M: Kashyap Desai <kashyap.desai@broadcom.com>
++M: Sumit Saxena <sumit.saxena@broadcom.com>
++M: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
++L: mpi3mr-linuxdrv.pdl@broadcom.com
++L: linux-scsi@vger.kernel.org
++S: Supported
++W: https://www.broadcom.com/support/storage
++F: drivers/scsi/mpi3mr/
++
++BROADCOM NETXTREME-E ROCE DRIVER
++M: Selvin Xavier <selvin.xavier@broadcom.com>
++L: linux-rdma@vger.kernel.org
++S: Supported
++W: http://www.broadcom.com
++F: drivers/infiniband/hw/bnxt_re/
++F: include/uapi/rdma/bnxt_re-abi.h
++
++BROADCOM NVRAM DRIVER
++M: Rafał Miłecki <zajec5@gmail.com>
++L: linux-mips@vger.kernel.org
++S: Maintained
++F: drivers/firmware/broadcom/*
++
++BROADCOM PMB (POWER MANAGEMENT BUS) DRIVER
++M: Rafał Miłecki <rafal@milecki.pl>
++M: Florian Fainelli <f.fainelli@gmail.com>
++M: bcm-kernel-feedback-list@broadcom.com
++L: linux-pm@vger.kernel.org
++S: Maintained
++T: git git://github.com/broadcom/stblinux.git
++F: drivers/soc/bcm/bcm63xx/bcm-pmb.c
++F: include/dt-bindings/soc/bcm-pmb.h
++
++BROADCOM SPECIFIC AMBA DRIVER (BCMA)
++M: Rafał Miłecki <zajec5@gmail.com>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++F: drivers/bcma/
++F: include/linux/bcma/
++
++BROADCOM SPI DRIVER
++M: Kamal Dasu <kdasu.kdev@gmail.com>
++M: bcm-kernel-feedback-list@broadcom.com
++S: Maintained
++F: Documentation/devicetree/bindings/spi/brcm,spi-bcm-qspi.yaml
++F: drivers/spi/spi-bcm-qspi.*
++F: drivers/spi/spi-brcmstb-qspi.c
++F: drivers/spi/spi-iproc-qspi.c
++
++BROADCOM STB AVS CPUFREQ DRIVER
++M: Markus Mayer <mmayer@broadcom.com>
++M: bcm-kernel-feedback-list@broadcom.com
++L: linux-pm@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/cpufreq/brcm,stb-avs-cpu-freq.txt
++F: drivers/cpufreq/brcmstb*
++
++BROADCOM STB AVS TMON DRIVER
++M: Markus Mayer <mmayer@broadcom.com>
++M: bcm-kernel-feedback-list@broadcom.com
++L: linux-pm@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/thermal/brcm,avs-tmon.txt
++F: drivers/thermal/broadcom/brcmstb*
++
++BROADCOM STB DPFE DRIVER
++M: Markus Mayer <mmayer@broadcom.com>
++M: bcm-kernel-feedback-list@broadcom.com
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/memory-controllers/brcm,dpfe-cpu.yaml
++F: drivers/memory/brcmstb_dpfe.c
++
++BROADCOM STB NAND FLASH DRIVER
++M: Brian Norris <computersforpeace@gmail.com>
++M: Kamal Dasu <kdasu.kdev@gmail.com>
++L: linux-mtd@lists.infradead.org
++L: bcm-kernel-feedback-list@broadcom.com
++S: Maintained
++F: drivers/mtd/nand/raw/brcmnand/
++
++BROADCOM STB PCIE DRIVER
++M: Jim Quinlan <jim2101024@gmail.com>
++M: Nicolas Saenz Julienne <nsaenz@kernel.org>
++M: Florian Fainelli <f.fainelli@gmail.com>
++M: bcm-kernel-feedback-list@broadcom.com
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
++F: drivers/pci/controller/pcie-brcmstb.c
++
++BROADCOM SYSTEMPORT ETHERNET DRIVER
++M: Florian Fainelli <f.fainelli@gmail.com>
++L: bcm-kernel-feedback-list@broadcom.com
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/broadcom/bcmsysport.*
++F: drivers/net/ethernet/broadcom/unimac.h
++
++BROADCOM TG3 GIGABIT ETHERNET DRIVER
++M: Siva Reddy Kallam <siva.kallam@broadcom.com>
++M: Prashant Sreedharan <prashant@broadcom.com>
++M: Michael Chan <mchan@broadcom.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/broadcom/tg3.*
++
++BROADCOM VK DRIVER
++M: Scott Branden <scott.branden@broadcom.com>
++L: bcm-kernel-feedback-list@broadcom.com
++S: Supported
++F: drivers/misc/bcm-vk/
++F: include/uapi/linux/misc/bcm_vk.h
++
++BROCADE BFA FC SCSI DRIVER
++M: Anil Gurumurthy <anil.gurumurthy@qlogic.com>
++M: Sudarsana Kalluru <sudarsana.kalluru@qlogic.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: drivers/scsi/bfa/
++
++BROCADE BNA 10 GIGABIT ETHERNET DRIVER
++M: Rasesh Mody <rmody@marvell.com>
++M: Sudarsana Kalluru <skalluru@marvell.com>
++M: GR-Linux-NIC-Dev@marvell.com
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/brocade/bna/
++
++BSG (block layer generic sg v4 driver)
++M: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: block/bsg.c
++F: include/linux/bsg.h
++F: include/uapi/linux/bsg.h
++
++BT87X AUDIO DRIVER
++M: Clemens Ladisch <clemens@ladisch.de>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
++F: Documentation/sound/cards/bt87x.rst
++F: sound/pci/bt87x.c
++
++BT8XXGPIO DRIVER
++M: Michael Buesch <m@bues.ch>
++S: Maintained
++W: http://bu3sch.de/btgpio.php
++F: drivers/gpio/gpio-bt8xx.c
++
++BTRFS FILE SYSTEM
++M: Chris Mason <clm@fb.com>
++M: Josef Bacik <josef@toxicpanda.com>
++M: David Sterba <dsterba@suse.com>
++L: linux-btrfs@vger.kernel.org
++S: Maintained
++W: http://btrfs.wiki.kernel.org/
++Q: http://patchwork.kernel.org/project/linux-btrfs/list/
++C: irc://irc.libera.chat/btrfs
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git
++F: Documentation/filesystems/btrfs.rst
++F: fs/btrfs/
++F: include/linux/btrfs*
++F: include/uapi/linux/btrfs*
++
++BTTV VIDEO4LINUX DRIVER
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-media@vger.kernel.org
++S: Odd fixes
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/driver-api/media/drivers/bttv*
++F: drivers/media/pci/bt8xx/bttv*
++
++BUS FREQUENCY DRIVER FOR SAMSUNG EXYNOS
++M: Chanwoo Choi <cw00.choi@samsung.com>
++L: linux-pm@vger.kernel.org
++L: linux-samsung-soc@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git
++F: Documentation/devicetree/bindings/devfreq/exynos-bus.txt
++F: drivers/devfreq/exynos-bus.c
++
++BUSLOGIC SCSI DRIVER
++M: Khalid Aziz <khalid@gonehiking.org>
++L: linux-scsi@vger.kernel.org
++S: Maintained
++F: drivers/scsi/BusLogic.*
++F: drivers/scsi/FlashPoint.*
++
++C-MEDIA CMI8788 DRIVER
++M: Clemens Ladisch <clemens@ladisch.de>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
++F: sound/pci/oxygen/
++
++C-SKY ARCHITECTURE
++M: Guo Ren <guoren@kernel.org>
++L: linux-csky@vger.kernel.org
++S: Supported
++T: git https://github.com/c-sky/csky-linux.git
++F: Documentation/devicetree/bindings/csky/
++F: Documentation/devicetree/bindings/interrupt-controller/csky,*
++F: Documentation/devicetree/bindings/timer/csky,*
++F: arch/csky/
++F: drivers/clocksource/timer-gx6605s.c
++F: drivers/clocksource/timer-mp-csky.c
++F: drivers/irqchip/irq-csky-*
++N: csky
++K: csky
++
++CA8210 IEEE-802.15.4 RADIO DRIVER
++M: Harry Morris <h.morris@cascoda.com>
++L: linux-wpan@vger.kernel.org
++S: Maintained
++W: https://github.com/Cascoda/ca8210-linux.git
++F: Documentation/devicetree/bindings/net/ieee802154/ca8210.txt
++F: drivers/net/ieee802154/ca8210.c
++
++CANAAN/KENDRYTE K210 SOC FPIOA DRIVER
++M: Damien Le Moal <damien.lemoal@wdc.com>
++L: linux-riscv@lists.infradead.org
++L: linux-gpio@vger.kernel.org (pinctrl driver)
++F: Documentation/devicetree/bindings/pinctrl/canaan,k210-fpioa.yaml
++F: drivers/pinctrl/pinctrl-k210.c
++
++CANAAN/KENDRYTE K210 SOC RESET CONTROLLER DRIVER
++M: Damien Le Moal <damien.lemoal@wdc.com>
++L: linux-kernel@vger.kernel.org
++L: linux-riscv@lists.infradead.org
++S: Maintained
++F: Documentation/devicetree/bindings/reset/canaan,k210-rst.yaml
++F: drivers/reset/reset-k210.c
++
++CANAAN/KENDRYTE K210 SOC SYSTEM CONTROLLER DRIVER
++M: Damien Le Moal <damien.lemoal@wdc.com>
++L: linux-riscv@lists.infradead.org
++S: Maintained
++F: Documentation/devicetree/bindings/mfd/canaan,k210-sysctl.yaml
++F: drivers/soc/canaan/
++F: include/soc/canaan/
++
++CACHEFILES: FS-CACHE BACKEND FOR CACHING ON MOUNTED FILESYSTEMS
++M: David Howells <dhowells@redhat.com>
++L: linux-cachefs@redhat.com (moderated for non-subscribers)
++S: Supported
++F: Documentation/filesystems/caching/cachefiles.rst
++F: fs/cachefiles/
++
++CADENCE MIPI-CSI2 BRIDGES
++M: Maxime Ripard <mripard@kernel.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/media/cdns,*.txt
++F: drivers/media/platform/cadence/cdns-csi2*
++
++CADENCE NAND DRIVER
++L: linux-mtd@lists.infradead.org
++S: Orphan
++F: Documentation/devicetree/bindings/mtd/cadence-nand-controller.txt
++F: drivers/mtd/nand/raw/cadence-nand-controller.c
++
++CADENCE USB3 DRD IP DRIVER
++M: Peter Chen <peter.chen@kernel.org>
++M: Pawel Laszczak <pawell@cadence.com>
++R: Roger Quadros <rogerq@kernel.org>
++R: Aswath Govindraju <a-govindraju@ti.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb.git
++F: Documentation/devicetree/bindings/usb/cdns,usb3.yaml
++F: drivers/usb/cdns3/
++X: drivers/usb/cdns3/cdnsp*
++
++CADENCE USBSSP DRD IP DRIVER
++M: Pawel Laszczak <pawell@cadence.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb.git
++F: drivers/usb/cdns3/
++X: drivers/usb/cdns3/cdns3*
++
++CADET FM/AM RADIO RECEIVER DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/radio-cadet*
++
++CAFE CMOS INTEGRATED CAMERA CONTROLLER DRIVER
++L: linux-media@vger.kernel.org
++S: Orphan
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/admin-guide/media/cafe_ccic*
++F: drivers/media/platform/marvell-ccic/
++
++CAIF NETWORK LAYER
++L: netdev@vger.kernel.org
++S: Orphan
++F: Documentation/networking/caif/
++F: drivers/net/caif/
++F: include/net/caif/
++F: include/uapi/linux/caif/
++F: net/caif/
++
++CAKE QDISC
++M: Toke Høiland-Jørgensen <toke@toke.dk>
++L: cake@lists.bufferbloat.net (moderated for non-subscribers)
++S: Maintained
++F: net/sched/sch_cake.c
++
++CAN NETWORK DRIVERS
++M: Wolfgang Grandegger <wg@grandegger.com>
++M: Marc Kleine-Budde <mkl@pengutronix.de>
++L: linux-can@vger.kernel.org
++S: Maintained
++W: https://github.com/linux-can
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git
++F: Documentation/devicetree/bindings/net/can/
++F: Documentation/devicetree/bindings/phy/ti,tcan104x-can.yaml
++F: drivers/net/can/
++F: drivers/phy/phy-can-transceiver.c
++F: include/linux/can/bittiming.h
++F: include/linux/can/dev.h
++F: include/linux/can/led.h
++F: include/linux/can/length.h
++F: include/linux/can/platform/
++F: include/linux/can/rx-offload.h
++F: include/uapi/linux/can/error.h
++F: include/uapi/linux/can/netlink.h
++F: include/uapi/linux/can/vxcan.h
++
++CAN NETWORK LAYER
++M: Oliver Hartkopp <socketcan@hartkopp.net>
++M: Marc Kleine-Budde <mkl@pengutronix.de>
++L: linux-can@vger.kernel.org
++S: Maintained
++W: https://github.com/linux-can
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git
++F: Documentation/networking/can.rst
++F: include/linux/can/can-ml.h
++F: include/linux/can/core.h
++F: include/linux/can/skb.h
++F: include/net/netns/can.h
++F: include/uapi/linux/can.h
++F: include/uapi/linux/can/bcm.h
++F: include/uapi/linux/can/gw.h
++F: include/uapi/linux/can/isotp.h
++F: include/uapi/linux/can/raw.h
++F: net/can/
++
++CAN-J1939 NETWORK LAYER
++M: Robin van der Gracht <robin@protonic.nl>
++M: Oleksij Rempel <o.rempel@pengutronix.de>
++R: kernel@pengutronix.de
++L: linux-can@vger.kernel.org
++S: Maintained
++F: Documentation/networking/j1939.rst
++F: include/uapi/linux/can/j1939.h
++F: net/can/j1939/
++
++CAPABILITIES
++M: Serge Hallyn <serge@hallyn.com>
++L: linux-security-module@vger.kernel.org
++S: Supported
++F: include/linux/capability.h
++F: include/uapi/linux/capability.h
++F: kernel/capability.c
++F: security/commoncap.c
++
++CAPELLA MICROSYSTEMS LIGHT SENSOR DRIVER
++M: Kevin Tsai <ktsai@capellamicro.com>
++S: Maintained
++F: drivers/iio/light/cm*
++
++CARL9170 LINUX COMMUNITY WIRELESS DRIVER
++M: Christian Lamparter <chunkeey@googlemail.com>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++W: https://wireless.wiki.kernel.org/en/users/Drivers/carl9170
++F: drivers/net/wireless/ath/carl9170/
++
++CAVIUM I2C DRIVER
++M: Robert Richter <rric@kernel.org>
++S: Odd Fixes
++W: http://www.marvell.com
++F: drivers/i2c/busses/i2c-octeon*
++F: drivers/i2c/busses/i2c-thunderx*
++
++CAVIUM LIQUIDIO NETWORK DRIVER
++M: Derek Chickles <dchickles@marvell.com>
++M: Satanand Burla <sburla@marvell.com>
++M: Felix Manlunas <fmanlunas@marvell.com>
++L: netdev@vger.kernel.org
++S: Supported
++W: http://www.marvell.com
++F: drivers/net/ethernet/cavium/liquidio/
++
++CAVIUM MMC DRIVER
++M: Robert Richter <rric@kernel.org>
++S: Odd Fixes
++W: http://www.marvell.com
++F: drivers/mmc/host/cavium*
++
++CAVIUM OCTEON-TX CRYPTO DRIVER
++M: George Cherian <gcherian@marvell.com>
++L: linux-crypto@vger.kernel.org
++S: Supported
++W: http://www.marvell.com
++F: drivers/crypto/cavium/cpt/
++
++CAVIUM THUNDERX2 ARM64 SOC
++M: Robert Richter <rric@kernel.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Odd Fixes
++F: Documentation/devicetree/bindings/arm/cavium-thunder2.txt
++F: arch/arm64/boot/dts/cavium/thunder2-99xx*
++
++CBS/ETF/TAPRIO QDISCS
++M: Vinicius Costa Gomes <vinicius.gomes@intel.com>
++S: Maintained
++L: netdev@vger.kernel.org
++F: net/sched/sch_cbs.c
++F: net/sched/sch_etf.c
++F: net/sched/sch_taprio.c
++
++CC2520 IEEE-802.15.4 RADIO DRIVER
++M: Varka Bhadram <varkabhadram@gmail.com>
++L: linux-wpan@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/ieee802154/cc2520.txt
++F: drivers/net/ieee802154/cc2520.c
++F: include/linux/spi/cc2520.h
++
++CCREE ARM TRUSTZONE CRYPTOCELL REE DRIVER
++M: Gilad Ben-Yossef <gilad@benyossef.com>
++L: linux-crypto@vger.kernel.org
++S: Supported
++W: https://developer.arm.com/products/system-ip/trustzone-cryptocell/cryptocell-700-family
++F: drivers/crypto/ccree/
++
++CCTRNG ARM TRUSTZONE CRYPTOCELL TRUE RANDOM NUMBER GENERATOR (TRNG) DRIVER
++M: Hadar Gat <hadar.gat@arm.com>
++L: linux-crypto@vger.kernel.org
++S: Supported
++F: drivers/char/hw_random/cctrng.c
++F: drivers/char/hw_random/cctrng.h
++F: Documentation/devicetree/bindings/rng/arm-cctrng.yaml
++W: https://developer.arm.com/products/system-ip/trustzone-cryptocell/cryptocell-700-family
++
++CEC FRAMEWORK
++M: Hans Verkuil <hverkuil-cisco@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Supported
++W: http://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/ABI/testing/debugfs-cec-error-inj
++F: Documentation/devicetree/bindings/media/cec.txt
++F: Documentation/driver-api/media/cec-core.rst
++F: Documentation/userspace-api/media/cec
++F: drivers/media/cec/
++F: drivers/media/rc/keymaps/rc-cec.c
++F: include/media/cec-notifier.h
++F: include/media/cec.h
++F: include/uapi/linux/cec-funcs.h
++F: include/uapi/linux/cec.h
++
++CEC GPIO DRIVER
++M: Hans Verkuil <hverkuil-cisco@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Supported
++W: http://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/cec-gpio.txt
++F: drivers/media/cec/platform/cec-gpio/
++
++CELL BROADBAND ENGINE ARCHITECTURE
++M: Arnd Bergmann <arnd@arndb.de>
++L: linuxppc-dev@lists.ozlabs.org
++S: Supported
++W: http://www.ibm.com/developerworks/power/cell/
++F: arch/powerpc/include/asm/cell*.h
++F: arch/powerpc/include/asm/spu*.h
++F: arch/powerpc/include/uapi/asm/spu*.h
++F: arch/powerpc/platforms/cell/
++
++CELLWISE CW2015 BATTERY DRIVER
++M: Tobias Schrammm <t.schramm@manjaro.org>
++S: Maintained
++F: Documentation/devicetree/bindings/power/supply/cw2015_battery.yaml
++F: drivers/power/supply/cw2015_battery.c
++
++CEPH COMMON CODE (LIBCEPH)
++M: Ilya Dryomov <idryomov@gmail.com>
++M: Jeff Layton <jlayton@kernel.org>
++L: ceph-devel@vger.kernel.org
++S: Supported
++W: http://ceph.com/
++T: git git://github.com/ceph/ceph-client.git
++F: include/linux/ceph/
++F: include/linux/crush/
++F: net/ceph/
++
++CEPH DISTRIBUTED FILE SYSTEM CLIENT (CEPH)
++M: Jeff Layton <jlayton@kernel.org>
++M: Ilya Dryomov <idryomov@gmail.com>
++L: ceph-devel@vger.kernel.org
++S: Supported
++W: http://ceph.com/
++T: git git://github.com/ceph/ceph-client.git
++F: Documentation/filesystems/ceph.rst
++F: fs/ceph/
++
++CERTIFICATE HANDLING
++M: David Howells <dhowells@redhat.com>
++M: David Woodhouse <dwmw2@infradead.org>
++L: keyrings@vger.kernel.org
++S: Maintained
++F: Documentation/admin-guide/module-signing.rst
++F: certs/
++F: scripts/extract-cert.c
++F: scripts/sign-file.c
++
++CFAG12864B LCD DRIVER
++M: Miguel Ojeda <ojeda@kernel.org>
++S: Maintained
++F: drivers/auxdisplay/cfag12864b.c
++F: include/linux/cfag12864b.h
++
++CFAG12864BFB LCD FRAMEBUFFER DRIVER
++M: Miguel Ojeda <ojeda@kernel.org>
++S: Maintained
++F: drivers/auxdisplay/cfag12864bfb.c
++F: include/linux/cfag12864b.h
++
++CHAR and MISC DRIVERS
++M: Arnd Bergmann <arnd@arndb.de>
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
++F: drivers/char/
++F: drivers/misc/
++F: include/linux/miscdevice.h
++X: drivers/char/agp/
++X: drivers/char/hw_random/
++X: drivers/char/ipmi/
++X: drivers/char/random.c
++X: drivers/char/tpm/
++
++CHECKPATCH
++M: Andy Whitcroft <apw@canonical.com>
++M: Joe Perches <joe@perches.com>
++R: Dwaipayan Ray <dwaipayanray1@gmail.com>
++R: Lukas Bulwahn <lukas.bulwahn@gmail.com>
++S: Maintained
++F: scripts/checkpatch.pl
++
++CHECKPATCH DOCUMENTATION
++M: Dwaipayan Ray <dwaipayanray1@gmail.com>
++M: Lukas Bulwahn <lukas.bulwahn@gmail.com>
++R: Joe Perches <joe@perches.com>
++S: Maintained
++F: Documentation/dev-tools/checkpatch.rst
++
++CHINESE DOCUMENTATION
++M: Alex Shi <alexs@kernel.org>
++S: Maintained
++F: Documentation/translations/zh_CN/
++
++CHIPIDEA USB HIGH SPEED DUAL ROLE CONTROLLER
++M: Peter Chen <peter.chen@kernel.org>
++L: linux-usb@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb.git
++F: drivers/usb/chipidea/
++
++CHIPONE ICN8318 I2C TOUCHSCREEN DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/input/touchscreen/chipone_icn8318.txt
++F: drivers/input/touchscreen/chipone_icn8318.c
++
++CHIPONE ICN8505 I2C TOUCHSCREEN DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/input/touchscreen/chipone_icn8505.c
++
++CHROME HARDWARE PLATFORM SUPPORT
++M: Benson Leung <bleung@chromium.org>
++M: Enric Balletbo i Serra <enric.balletbo@collabora.com>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux.git
++F: drivers/platform/chrome/
++
++CHROMEOS EC CODEC DRIVER
++M: Cheng-Yi Chiang <cychiang@chromium.org>
++R: Enric Balletbo i Serra <enric.balletbo@collabora.com>
++R: Guenter Roeck <groeck@chromium.org>
++S: Maintained
++F: Documentation/devicetree/bindings/sound/google,cros-ec-codec.yaml
++F: sound/soc/codecs/cros_ec_codec.*
++
++CHROMEOS EC SUBDRIVERS
++M: Benson Leung <bleung@chromium.org>
++M: Enric Balletbo i Serra <enric.balletbo@collabora.com>
++R: Guenter Roeck <groeck@chromium.org>
++S: Maintained
++F: drivers/power/supply/cros_usbpd-charger.c
++N: cros_ec
++N: cros-ec
++
++CHRONTEL CH7322 CEC DRIVER
++M: Jeff Chase <jnchase@google.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/chrontel,ch7322.yaml
++F: drivers/media/cec/i2c/ch7322.c
++
++CIRRUS LOGIC AUDIO CODEC DRIVERS
++M: James Schulman <james.schulman@cirrus.com>
++M: David Rhodes <david.rhodes@cirrus.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++L: patches@opensource.cirrus.com
++S: Maintained
++F: sound/soc/codecs/cs*
++
++CIRRUS LOGIC EP93XX ETHERNET DRIVER
++M: Hartley Sweeten <hsweeten@visionengravers.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/cirrus/ep93xx_eth.c
++
++CIRRUS LOGIC LOCHNAGAR DRIVER
++M: Charles Keepax <ckeepax@opensource.cirrus.com>
++M: Richard Fitzgerald <rf@opensource.cirrus.com>
++L: patches@opensource.cirrus.com
++S: Supported
++F: Documentation/devicetree/bindings/clock/cirrus,lochnagar.yaml
++F: Documentation/devicetree/bindings/hwmon/cirrus,lochnagar.yaml
++F: Documentation/devicetree/bindings/mfd/cirrus,lochnagar.yaml
++F: Documentation/devicetree/bindings/pinctrl/cirrus,lochnagar.yaml
++F: Documentation/devicetree/bindings/sound/cirrus,lochnagar.yaml
++F: Documentation/hwmon/lochnagar.rst
++F: drivers/clk/clk-lochnagar.c
++F: drivers/hwmon/lochnagar-hwmon.c
++F: drivers/mfd/lochnagar-i2c.c
++F: drivers/pinctrl/cirrus/pinctrl-lochnagar.c
++F: drivers/regulator/lochnagar-regulator.c
++F: include/dt-bindings/clk/lochnagar.h
++F: include/dt-bindings/pinctrl/lochnagar.h
++F: include/linux/mfd/lochnagar*
++F: sound/soc/codecs/lochnagar-sc.c
++
++CIRRUS LOGIC MADERA CODEC DRIVERS
++M: Charles Keepax <ckeepax@opensource.cirrus.com>
++M: Richard Fitzgerald <rf@opensource.cirrus.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++L: patches@opensource.cirrus.com
++S: Supported
++W: https://github.com/CirrusLogic/linux-drivers/wiki
++T: git https://github.com/CirrusLogic/linux-drivers.git
++F: Documentation/devicetree/bindings/mfd/cirrus,madera.yaml
++F: Documentation/devicetree/bindings/pinctrl/cirrus,madera.yaml
++F: Documentation/devicetree/bindings/sound/cirrus,madera.yaml
++F: drivers/gpio/gpio-madera*
++F: drivers/irqchip/irq-madera*
++F: drivers/mfd/cs47l*
++F: drivers/mfd/madera*
++F: drivers/pinctrl/cirrus/*
++F: include/dt-bindings/sound/madera*
++F: include/linux/irqchip/irq-madera*
++F: include/linux/mfd/madera/*
++F: include/sound/madera*
++F: sound/soc/codecs/cs47l*
++F: sound/soc/codecs/madera*
++
++CISCO FCOE HBA DRIVER
++M: Satish Kharat <satishkh@cisco.com>
++M: Sesidhar Baddela <sebaddel@cisco.com>
++M: Karan Tilak Kumar <kartilak@cisco.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: drivers/scsi/fnic/
++
++CISCO SCSI HBA DRIVER
++M: Karan Tilak Kumar <kartilak@cisco.com>
++M: Sesidhar Baddela <sebaddel@cisco.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: drivers/scsi/snic/
++
++CISCO VIC ETHERNET NIC DRIVER
++M: Christian Benvenuti <benve@cisco.com>
++M: Govindarajulu Varadarajan <_govind@gmx.com>
++S: Supported
++F: drivers/net/ethernet/cisco/enic/
++
++CISCO VIC LOW LATENCY NIC DRIVER
++M: Christian Benvenuti <benve@cisco.com>
++M: Nelson Escobar <neescoba@cisco.com>
++S: Supported
++F: drivers/infiniband/hw/usnic/
++
++CLANG-FORMAT FILE
++M: Miguel Ojeda <ojeda@kernel.org>
++S: Maintained
++F: .clang-format
++
++CLANG/LLVM BUILD SUPPORT
++M: Nathan Chancellor <nathan@kernel.org>
++M: Nick Desaulniers <ndesaulniers@google.com>
++L: llvm@lists.linux.dev
++S: Supported
++W: https://clangbuiltlinux.github.io/
++B: https://github.com/ClangBuiltLinux/linux/issues
++C: irc://irc.libera.chat/clangbuiltlinux
++F: Documentation/kbuild/llvm.rst
++F: include/linux/compiler-clang.h
++F: scripts/Makefile.clang
++F: scripts/clang-tools/
++K: \b(?i:clang|llvm)\b
++
++CLANG CONTROL FLOW INTEGRITY SUPPORT
++M: Sami Tolvanen <samitolvanen@google.com>
++M: Kees Cook <keescook@chromium.org>
++R: Nathan Chancellor <nathan@kernel.org>
++R: Nick Desaulniers <ndesaulniers@google.com>
++L: llvm@lists.linux.dev
++S: Supported
++B: https://github.com/ClangBuiltLinux/linux/issues
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/clang/features
++F: include/linux/cfi.h
++F: kernel/cfi.c
++
++CLEANCACHE API
++M: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: include/linux/cleancache.h
++F: mm/cleancache.c
++
++CLK API
++M: Russell King <linux@armlinux.org.uk>
++L: linux-clk@vger.kernel.org
++S: Maintained
++F: include/linux/clk.h
++
++CLOCKSOURCE, CLOCKEVENT DRIVERS
++M: Daniel Lezcano <daniel.lezcano@linaro.org>
++M: Thomas Gleixner <tglx@linutronix.de>
++L: linux-kernel@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/core
++F: Documentation/devicetree/bindings/timer/
++F: drivers/clocksource/
++
++CMPC ACPI DRIVER
++M: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
++M: Daniel Oliveira Nascimento <don@syst.com.br>
++L: platform-driver-x86@vger.kernel.org
++S: Supported
++F: drivers/platform/x86/classmate-laptop.c
++
++COBALT MEDIA DRIVER
++M: Hans Verkuil <hverkuil-cisco@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Supported
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/pci/cobalt/
++
++COCCINELLE/Semantic Patches (SmPL)
++M: Julia Lawall <Julia.Lawall@inria.fr>
++M: Gilles Muller <Gilles.Muller@inria.fr>
++M: Nicolas Palix <nicolas.palix@imag.fr>
++M: Michal Marek <michal.lkml@markovi.net>
++L: cocci@systeme.lip6.fr (moderated for non-subscribers)
++S: Supported
++W: http://coccinelle.lip6.fr/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild.git misc
++F: Documentation/dev-tools/coccinelle.rst
++F: scripts/coccicheck
++F: scripts/coccinelle/
++
++CODA FILE SYSTEM
++M: Jan Harkes <jaharkes@cs.cmu.edu>
++M: coda@cs.cmu.edu
++L: codalist@coda.cs.cmu.edu
++S: Maintained
++W: http://www.coda.cs.cmu.edu/
++F: Documentation/filesystems/coda.rst
++F: fs/coda/
++F: include/linux/coda*.h
++F: include/uapi/linux/coda*.h
++
++CODA V4L2 MEM2MEM DRIVER
++M: Philipp Zabel <p.zabel@pengutronix.de>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/media/coda.yaml
++F: drivers/media/platform/coda/
++
++CODE OF CONDUCT
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++S: Supported
++F: Documentation/process/code-of-conduct-interpretation.rst
++F: Documentation/process/code-of-conduct.rst
++
++COMEDI DRIVERS
++M: Ian Abbott <abbotti@mev.co.uk>
++M: H Hartley Sweeten <hsweeten@visionengravers.com>
++S: Odd Fixes
++F: drivers/comedi/
++
++COMMON CLK FRAMEWORK
++M: Michael Turquette <mturquette@baylibre.com>
++M: Stephen Boyd <sboyd@kernel.org>
++L: linux-clk@vger.kernel.org
++S: Maintained
++Q: http://patchwork.kernel.org/project/linux-clk/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git
++F: Documentation/devicetree/bindings/clock/
++F: drivers/clk/
++F: include/linux/clk-pr*
++F: include/linux/clk/
++F: include/linux/of_clk.h
++X: drivers/clk/clkdev.c
++
++COMMON INTERNET FILE SYSTEM CLIENT (CIFS)
++M: Steve French <sfrench@samba.org>
++L: linux-cifs@vger.kernel.org
++L: samba-technical@lists.samba.org (moderated for non-subscribers)
++S: Supported
++W: http://linux-cifs.samba.org/
++T: git git://git.samba.org/sfrench/cifs-2.6.git
++F: Documentation/admin-guide/cifs/
++F: fs/cifs/
++F: fs/smbfs_common/
++
++COMPACTPCI HOTPLUG CORE
++M: Scott Murray <scott@spiteful.org>
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: drivers/pci/hotplug/cpci_hotplug*
++
++COMPACTPCI HOTPLUG GENERIC DRIVER
++M: Scott Murray <scott@spiteful.org>
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: drivers/pci/hotplug/cpcihp_generic.c
++
++COMPACTPCI HOTPLUG ZIATECH ZT5550 DRIVER
++M: Scott Murray <scott@spiteful.org>
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: drivers/pci/hotplug/cpcihp_zt5550.*
++
++COMPAL LAPTOP SUPPORT
++M: Cezary Jackiewicz <cezary.jackiewicz@gmail.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/compal-laptop.c
++
++COMPILER ATTRIBUTES
++M: Miguel Ojeda <ojeda@kernel.org>
++R: Nick Desaulniers <ndesaulniers@google.com>
++S: Maintained
++F: include/linux/compiler_attributes.h
++
++COMPUTE EXPRESS LINK (CXL)
++M: Alison Schofield <alison.schofield@intel.com>
++M: Vishal Verma <vishal.l.verma@intel.com>
++M: Ira Weiny <ira.weiny@intel.com>
++M: Ben Widawsky <ben.widawsky@intel.com>
++M: Dan Williams <dan.j.williams@intel.com>
++L: linux-cxl@vger.kernel.org
++S: Maintained
++F: drivers/cxl/
++F: include/uapi/linux/cxl_mem.h
++
++CONEXANT ACCESSRUNNER USB DRIVER
++L: accessrunner-general@lists.sourceforge.net
++S: Orphan
++W: http://accessrunner.sourceforge.net/
++F: drivers/usb/atm/cxacru.c
++
++CONFIGFS
++M: Joel Becker <jlbec@evilplan.org>
++M: Christoph Hellwig <hch@lst.de>
++S: Supported
++T: git git://git.infradead.org/users/hch/configfs.git
++F: fs/configfs/
++F: include/linux/configfs.h
++F: samples/configfs/
++
++CONSOLE SUBSYSTEM
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++S: Supported
++F: drivers/video/console/
++F: include/linux/console*
++
++CONTEXT TRACKING
++M: Frederic Weisbecker <frederic@kernel.org>
++S: Maintained
++F: kernel/context_tracking.c
++F: include/linux/context_tracking*
++
++CONTROL GROUP (CGROUP)
++M: Tejun Heo <tj@kernel.org>
++M: Zefan Li <lizefan.x@bytedance.com>
++M: Johannes Weiner <hannes@cmpxchg.org>
++L: cgroups@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git
++F: Documentation/admin-guide/cgroup-v1/
++F: Documentation/admin-guide/cgroup-v2.rst
++F: include/linux/cgroup*
++F: kernel/cgroup/
++
++CONTROL GROUP - BLOCK IO CONTROLLER (BLKIO)
++M: Tejun Heo <tj@kernel.org>
++M: Jens Axboe <axboe@kernel.dk>
++L: cgroups@vger.kernel.org
++L: linux-block@vger.kernel.org
++T: git git://git.kernel.dk/linux-block
++F: Documentation/admin-guide/cgroup-v1/blkio-controller.rst
++F: block/bfq-cgroup.c
++F: block/blk-cgroup.c
++F: block/blk-iolatency.c
++F: block/blk-throttle.c
++F: include/linux/blk-cgroup.h
++
++CONTROL GROUP - CPUSET
++M: Zefan Li <lizefan.x@bytedance.com>
++L: cgroups@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git
++F: Documentation/admin-guide/cgroup-v1/cpusets.rst
++F: include/linux/cpuset.h
++F: kernel/cgroup/cpuset.c
++
++CONTROL GROUP - MEMORY RESOURCE CONTROLLER (MEMCG)
++M: Johannes Weiner <hannes@cmpxchg.org>
++M: Michal Hocko <mhocko@kernel.org>
++M: Vladimir Davydov <vdavydov.dev@gmail.com>
++L: cgroups@vger.kernel.org
++L: linux-mm@kvack.org
++S: Maintained
++F: mm/memcontrol.c
++F: mm/swap_cgroup.c
++
++CORETEMP HARDWARE MONITORING DRIVER
++M: Fenghua Yu <fenghua.yu@intel.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/coretemp.rst
++F: drivers/hwmon/coretemp.c
++
++CORSAIR-CPRO HARDWARE MONITOR DRIVER
++M: Marius Zachmann <mail@mariuszachmann.de>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: drivers/hwmon/corsair-cpro.c
++
++CORSAIR-PSU HARDWARE MONITOR DRIVER
++M: Wilken Gottwalt <wilken.gottwalt@posteo.net>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/corsair-psu.rst
++F: drivers/hwmon/corsair-psu.c
++
++COSA/SRP SYNC SERIAL DRIVER
++M: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
++S: Maintained
++W: http://www.fi.muni.cz/~kas/cosa/
++F: drivers/net/wan/cosa*
++
++COUNTER SUBSYSTEM
++M: William Breathitt Gray <vilhelm.gray@gmail.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-bus-counter
++F: Documentation/driver-api/generic-counter.rst
++F: drivers/counter/
++F: include/linux/counter.h
++F: include/linux/counter_enum.h
++
++CP2615 I2C DRIVER
++M: Bence Csókás <bence98@sch.bme.hu>
++S: Maintained
++F: drivers/i2c/busses/i2c-cp2615.c
++
++CPMAC ETHERNET DRIVER
++M: Florian Fainelli <f.fainelli@gmail.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/ti/cpmac.c
++
++CPU FREQUENCY DRIVERS - VEXPRESS SPC ARM BIG LITTLE
++M: Viresh Kumar <viresh.kumar@linaro.org>
++M: Sudeep Holla <sudeep.holla@arm.com>
++L: linux-pm@vger.kernel.org
++S: Maintained
++W: http://www.arm.com/products/processors/technologies/biglittleprocessing.php
++F: drivers/cpufreq/vexpress-spc-cpufreq.c
++
++CPU FREQUENCY SCALING FRAMEWORK
++M: "Rafael J. Wysocki" <rafael@kernel.org>
++M: Viresh Kumar <viresh.kumar@linaro.org>
++L: linux-pm@vger.kernel.org
++S: Maintained
++B: https://bugzilla.kernel.org
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm.git (For ARM Updates)
++F: Documentation/admin-guide/pm/cpufreq.rst
++F: Documentation/admin-guide/pm/intel_pstate.rst
++F: Documentation/cpu-freq/
++F: Documentation/devicetree/bindings/cpufreq/
++F: drivers/cpufreq/
++F: include/linux/cpufreq.h
++F: include/linux/sched/cpufreq.h
++F: kernel/sched/cpufreq*.c
++F: tools/testing/selftests/cpufreq/
++
++CPU IDLE TIME MANAGEMENT FRAMEWORK
++M: "Rafael J. Wysocki" <rafael@kernel.org>
++M: Daniel Lezcano <daniel.lezcano@linaro.org>
++L: linux-pm@vger.kernel.org
++S: Maintained
++B: https://bugzilla.kernel.org
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git
++F: Documentation/admin-guide/pm/cpuidle.rst
++F: Documentation/driver-api/pm/cpuidle.rst
++F: drivers/cpuidle/
++F: include/linux/cpuidle.h
++
++CPU POWER MONITORING SUBSYSTEM
++M: Thomas Renninger <trenn@suse.com>
++M: Shuah Khan <shuah@kernel.org>
++M: Shuah Khan <skhan@linuxfoundation.org>
++L: linux-pm@vger.kernel.org
++S: Maintained
++F: tools/power/cpupower/
++
++CPUID/MSR DRIVER
++M: "H. Peter Anvin" <hpa@zytor.com>
++S: Maintained
++F: arch/x86/kernel/cpuid.c
++F: arch/x86/kernel/msr.c
++
++CPUIDLE DRIVER - ARM BIG LITTLE
++M: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
++M: Daniel Lezcano <daniel.lezcano@linaro.org>
++L: linux-pm@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git
++F: drivers/cpuidle/cpuidle-big_little.c
++
++CPUIDLE DRIVER - ARM EXYNOS
++M: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
++M: Daniel Lezcano <daniel.lezcano@linaro.org>
++M: Kukjin Kim <kgene@kernel.org>
++L: linux-pm@vger.kernel.org
++L: linux-samsung-soc@vger.kernel.org
++S: Supported
++F: arch/arm/mach-exynos/pm.c
++F: drivers/cpuidle/cpuidle-exynos.c
++F: include/linux/platform_data/cpuidle-exynos.h
++
++CPUIDLE DRIVER - ARM PSCI
++M: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
++M: Sudeep Holla <sudeep.holla@arm.com>
++L: linux-pm@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++F: drivers/cpuidle/cpuidle-psci.c
++
++CPUIDLE DRIVER - ARM PSCI PM DOMAIN
++M: Ulf Hansson <ulf.hansson@linaro.org>
++L: linux-pm@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++F: drivers/cpuidle/cpuidle-psci.h
++F: drivers/cpuidle/cpuidle-psci-domain.c
++
++CRAMFS FILESYSTEM
++M: Nicolas Pitre <nico@fluxnic.net>
++S: Maintained
++F: Documentation/filesystems/cramfs.rst
++F: fs/cramfs/
++
++CREATIVE SB0540
++M: Bastien Nocera <hadess@hadess.net>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/hid/hid-creative-sb0540.c
++
++CRYPTO API
++M: Herbert Xu <herbert@gondor.apana.org.au>
++M: "David S. Miller" <davem@davemloft.net>
++L: linux-crypto@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6.git
++F: Documentation/crypto/
++F: Documentation/devicetree/bindings/crypto/
++F: arch/*/crypto/
++F: crypto/
++F: drivers/crypto/
++F: include/crypto/
++F: include/linux/crypto*
++F: lib/crypto/
++
++CRYPTOGRAPHIC RANDOM NUMBER GENERATOR
++M: Neil Horman <nhorman@tuxdriver.com>
++L: linux-crypto@vger.kernel.org
++S: Maintained
++F: crypto/ansi_cprng.c
++F: crypto/rng.c
++
++CS3308 MEDIA DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++W: http://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/cs3308.c
++
++CS5535 Audio ALSA driver
++M: Jaya Kumar <jayakumar.alsa@gmail.com>
++S: Maintained
++F: sound/pci/cs5535audio/
++
++CSI DRIVERS FOR ALLWINNER V3s
++M: Yong Deng <yong.deng@magewell.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/allwinner,sun6i-a31-csi.yaml
++F: drivers/media/platform/sunxi/sun6i-csi/
++
++CW1200 WLAN driver
++M: Solomon Peachy <pizza@shaftnet.org>
++S: Maintained
++F: drivers/net/wireless/st/cw1200/
++
++CX18 VIDEO4LINUX DRIVER
++M: Andy Walls <awalls@md.metrocast.net>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/pci/cx18/
++F: include/uapi/linux/ivtv*
++
++CX2341X MPEG ENCODER HELPER MODULE
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/common/cx2341x*
++F: include/media/drv-intf/cx2341x.h
++
++CX24120 MEDIA DRIVER
++M: Jemma Denson <jdenson@gmail.com>
++M: Patrick Boettcher <patrick.boettcher@posteo.de>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++F: drivers/media/dvb-frontends/cx24120*
++
++CX88 VIDEO4LINUX DRIVER
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-media@vger.kernel.org
++S: Odd fixes
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/driver-api/media/drivers/cx88*
++F: drivers/media/pci/cx88/
++
++CXD2820R MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/dvb-frontends/cxd2820r*
++
++CXGB3 ETHERNET DRIVER (CXGB3)
++M: Raju Rangoju <rajur@chelsio.com>
++L: netdev@vger.kernel.org
++S: Supported
++W: http://www.chelsio.com
++F: drivers/net/ethernet/chelsio/cxgb3/
++
++CXGB3 ISCSI DRIVER (CXGB3I)
++M: Karen Xie <kxie@chelsio.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++W: http://www.chelsio.com
++F: drivers/scsi/cxgbi/cxgb3i
++
++CXGB4 CRYPTO DRIVER (chcr)
++M: Ayush Sawal <ayush.sawal@chelsio.com>
++M: Vinay Kumar Yadav <vinay.yadav@chelsio.com>
++M: Rohit Maheshwari <rohitm@chelsio.com>
++L: linux-crypto@vger.kernel.org
++S: Supported
++W: http://www.chelsio.com
++F: drivers/crypto/chelsio
++
++CXGB4 INLINE CRYPTO DRIVER
++M: Ayush Sawal <ayush.sawal@chelsio.com>
++M: Vinay Kumar Yadav <vinay.yadav@chelsio.com>
++M: Rohit Maheshwari <rohitm@chelsio.com>
++L: netdev@vger.kernel.org
++S: Supported
++W: http://www.chelsio.com
++F: drivers/net/ethernet/chelsio/inline_crypto/
++
++CXGB4 ETHERNET DRIVER (CXGB4)
++M: Raju Rangoju <rajur@chelsio.com>
++L: netdev@vger.kernel.org
++S: Supported
++W: http://www.chelsio.com
++F: drivers/net/ethernet/chelsio/cxgb4/
++
++CXGB4 ISCSI DRIVER (CXGB4I)
++M: Karen Xie <kxie@chelsio.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++W: http://www.chelsio.com
++F: drivers/scsi/cxgbi/cxgb4i
++
++CXGB4 IWARP RNIC DRIVER (IW_CXGB4)
++M: Potnuri Bharat Teja <bharat@chelsio.com>
++L: linux-rdma@vger.kernel.org
++S: Supported
++W: http://www.openfabrics.org
++F: drivers/infiniband/hw/cxgb4/
++F: include/uapi/rdma/cxgb4-abi.h
++
++CXGB4VF ETHERNET DRIVER (CXGB4VF)
++M: Raju Rangoju <rajur@chelsio.com>
++L: netdev@vger.kernel.org
++S: Supported
++W: http://www.chelsio.com
++F: drivers/net/ethernet/chelsio/cxgb4vf/
++
++CXL (IBM Coherent Accelerator Processor Interface CAPI) DRIVER
++M: Frederic Barrat <fbarrat@linux.ibm.com>
++M: Andrew Donnellan <ajd@linux.ibm.com>
++L: linuxppc-dev@lists.ozlabs.org
++S: Supported
++F: Documentation/ABI/testing/sysfs-class-cxl
++F: Documentation/powerpc/cxl.rst
++F: arch/powerpc/platforms/powernv/pci-cxl.c
++F: drivers/misc/cxl/
++F: include/misc/cxl*
++F: include/uapi/misc/cxl.h
++
++CXLFLASH (IBM Coherent Accelerator Processor Interface CAPI Flash) SCSI DRIVER
++M: Manoj N. Kumar <manoj@linux.ibm.com>
++M: Matthew R. Ochs <mrochs@linux.ibm.com>
++M: Uma Krishnan <ukrishn@linux.ibm.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: Documentation/powerpc/cxlflash.rst
++F: drivers/scsi/cxlflash/
++F: include/uapi/scsi/cxlflash_ioctl.h
++
++CYBERPRO FB DRIVER
++M: Russell King <linux@armlinux.org.uk>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++W: http://www.armlinux.org.uk/
++F: drivers/video/fbdev/cyber2000fb.*
++
++CYCLADES PC300 DRIVER
++S: Orphan
++F: drivers/net/wan/pc300*
++
++CYPRESS_FIRMWARE MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/common/cypress_firmware*
++
++CYPRESS CY8CTMA140 TOUCHSCREEN DRIVER
++M: Linus Walleij <linus.walleij@linaro.org>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/input/touchscreen/cy8ctma140.c
++
++CYTTSP TOUCHSCREEN DRIVER
++M: Linus Walleij <linus.walleij@linaro.org>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/input/touchscreen/cyttsp*
++
++D-LINK DIR-685 TOUCHKEYS DRIVER
++M: Linus Walleij <linus.walleij@linaro.org>
++L: linux-input@vger.kernel.org
++S: Supported
++F: drivers/input/keyboard/dlink-dir685-touchkeys.c
++
++DALLAS/MAXIM DS1685-FAMILY REAL TIME CLOCK
++M: Joshua Kinard <kumba@gentoo.org>
++S: Maintained
++F: drivers/rtc/rtc-ds1685.c
++F: include/linux/rtc/ds1685.h
++
++DAMA SLAVE for AX.25
++M: Joerg Reuter <jreuter@yaina.de>
++L: linux-hams@vger.kernel.org
++S: Maintained
++W: http://yaina.de/jreuter/
++W: http://www.qsl.net/dl1bke/
++F: net/ax25/af_ax25.c
++F: net/ax25/ax25_dev.c
++F: net/ax25/ax25_ds_*
++F: net/ax25/ax25_in.c
++F: net/ax25/ax25_out.c
++F: net/ax25/ax25_timer.c
++F: net/ax25/sysctl_net_ax25.c
++
++DATA ACCESS MONITOR
++M: SeongJae Park <sjpark@amazon.de>
++L: linux-mm@kvack.org
++S: Maintained
++F: Documentation/admin-guide/mm/damon/
++F: Documentation/vm/damon/
++F: include/linux/damon.h
++F: include/trace/events/damon.h
++F: mm/damon/
++F: tools/testing/selftests/damon/
++
++DAVICOM FAST ETHERNET (DMFE) NETWORK DRIVER
++L: netdev@vger.kernel.org
++S: Orphan
++F: Documentation/networking/device_drivers/ethernet/dec/dmfe.rst
++F: drivers/net/ethernet/dec/tulip/dmfe.c
++
++DC390/AM53C974 SCSI driver
++M: Hannes Reinecke <hare@suse.com>
++L: linux-scsi@vger.kernel.org
++S: Maintained
++F: drivers/scsi/am53c974.c
++
++DC395x SCSI driver
++M: Oliver Neukum <oliver@neukum.org>
++M: Ali Akcaagac <aliakc@web.de>
++M: Jamie Lenehan <lenehan@twibble.org>
++L: dc395x@twibble.org
++S: Maintained
++W: http://twibble.org/dist/dc395x/
++W: http://lists.twibble.org/mailman/listinfo/dc395x/
++F: Documentation/scsi/dc395x.rst
++F: drivers/scsi/dc395x.*
++
++DCCP PROTOCOL
++L: dccp@vger.kernel.org
++S: Orphan
++W: http://www.linuxfoundation.org/collaborate/workgroups/networking/dccp
++F: include/linux/dccp.h
++F: include/linux/tfrc.h
++F: include/uapi/linux/dccp.h
++F: net/dccp/
++
++DECnet NETWORK LAYER
++L: linux-decnet-user@lists.sourceforge.net
++S: Orphan
++W: http://linux-decnet.sourceforge.net
++F: Documentation/networking/decnet.rst
++F: net/decnet/
++
++DECSTATION PLATFORM SUPPORT
++M: "Maciej W. Rozycki" <macro@orcam.me.uk>
++L: linux-mips@vger.kernel.org
++S: Maintained
++W: http://www.linux-mips.org/wiki/DECstation
++F: arch/mips/dec/
++F: arch/mips/include/asm/dec/
++F: arch/mips/include/asm/mach-dec/
++
++DEFXX FDDI NETWORK DRIVER
++M: "Maciej W. Rozycki" <macro@orcam.me.uk>
++S: Maintained
++F: drivers/net/fddi/defxx.*
++
++DEFZA FDDI NETWORK DRIVER
++M: "Maciej W. Rozycki" <macro@orcam.me.uk>
++S: Maintained
++F: drivers/net/fddi/defza.*
++
++DEINTERLACE DRIVERS FOR ALLWINNER H3
++M: Jernej Skrabec <jernej.skrabec@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/allwinner,sun8i-h3-deinterlace.yaml
++F: drivers/media/platform/sunxi/sun8i-di/
++
++DELL LAPTOP DRIVER
++M: Matthew Garrett <mjg59@srcf.ucam.org>
++M: Pali Rohár <pali@kernel.org>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/dell/dell-laptop.c
++
++DELL LAPTOP FREEFALL DRIVER
++M: Pali Rohár <pali@kernel.org>
++S: Maintained
++F: drivers/platform/x86/dell/dell-smo8800.c
++
++DELL LAPTOP RBTN DRIVER
++M: Pali Rohár <pali@kernel.org>
++S: Maintained
++F: drivers/platform/x86/dell/dell-rbtn.*
++
++DELL LAPTOP SMM DRIVER
++M: Pali Rohár <pali@kernel.org>
++S: Maintained
++F: drivers/hwmon/dell-smm-hwmon.c
++F: include/uapi/linux/i8k.h
++
++DELL REMOTE BIOS UPDATE DRIVER
++M: Stuart Hayes <stuart.w.hayes@gmail.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/dell/dell_rbu.c
++
++DELL SMBIOS DRIVER
++M: Pali Rohár <pali@kernel.org>
++L: Dell.Client.Kernel@dell.com
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/dell/dell-smbios.*
++
++DELL SMBIOS SMM DRIVER
++L: Dell.Client.Kernel@dell.com
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/dell/dell-smbios-smm.c
++
++DELL SMBIOS WMI DRIVER
++L: Dell.Client.Kernel@dell.com
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/dell/dell-smbios-wmi.c
++F: tools/wmi/dell-smbios-example.c
++
++DELL SYSTEMS MANAGEMENT BASE DRIVER (dcdbas)
++M: Stuart Hayes <stuart.w.hayes@gmail.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: Documentation/driver-api/dcdbas.rst
++F: drivers/platform/x86/dell/dcdbas.*
++
++DELL WMI DESCRIPTOR DRIVER
++L: Dell.Client.Kernel@dell.com
++S: Maintained
++F: drivers/platform/x86/dell/dell-wmi-descriptor.c
++
++DELL WMI SYSMAN DRIVER
++M: Divya Bharathi <divya.bharathi@dell.com>
++M: Prasanth Ksr <prasanth.ksr@dell.com>
++L: Dell.Client.Kernel@dell.com
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-class-firmware-attributes
++F: drivers/platform/x86/dell/dell-wmi-sysman/
++
++DELL WMI NOTIFICATIONS DRIVER
++M: Matthew Garrett <mjg59@srcf.ucam.org>
++M: Pali Rohár <pali@kernel.org>
++S: Maintained
++F: drivers/platform/x86/dell/dell-wmi-base.c
++
++DELL WMI HARDWARE PRIVACY SUPPORT
++M: Perry Yuan <Perry.Yuan@dell.com>
++L: Dell.Client.Kernel@dell.com
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/dell/dell-wmi-privacy.c
++
++DELTA ST MEDIA DRIVER
++M: Hugues Fruchet <hugues.fruchet@foss.st.com>
++L: linux-media@vger.kernel.org
++S: Supported
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/platform/sti/delta
++
++DELTA DPS920AB PSU DRIVER
++M: Robert Marko <robert.marko@sartura.hr>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/dps920ab.rst
++F: drivers/hwmon/pmbus/dps920ab.c
++
++DENALI NAND DRIVER
++L: linux-mtd@lists.infradead.org
++S: Orphan
++F: drivers/mtd/nand/raw/denali*
++
++DESIGNWARE EDMA CORE IP DRIVER
++M: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
++L: dmaengine@vger.kernel.org
++S: Maintained
++F: drivers/dma/dw-edma/
++F: include/linux/dma/edma.h
++
++DESIGNWARE XDATA IP DRIVER
++M: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: Documentation/misc-devices/dw-xdata-pcie.rst
++F: drivers/misc/dw-xdata-pcie.c
++
++DESIGNWARE USB2 DRD IP DRIVER
++M: Minas Harutyunyan <hminas@synopsys.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git
++F: drivers/usb/dwc2/
++
++DESIGNWARE USB3 DRD IP DRIVER
++M: Felipe Balbi <balbi@kernel.org>
++L: linux-usb@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git
++F: drivers/usb/dwc3/
++
++DEVANTECH SRF ULTRASONIC RANGER IIO DRIVER
++M: Andreas Klinger <ak@it-klinger.de>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-bus-iio-distance-srf08
++F: drivers/iio/proximity/srf*.c
++
++DEVICE COREDUMP (DEV_COREDUMP)
++M: Johannes Berg <johannes@sipsolutions.net>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: drivers/base/devcoredump.c
++F: include/linux/devcoredump.h
++
++DEVICE DEPENDENCY HELPER SCRIPT
++M: Saravana Kannan <saravanak@google.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: scripts/dev-needs.sh
++
++DEVICE DIRECT ACCESS (DAX)
++M: Dan Williams <dan.j.williams@intel.com>
++M: Vishal Verma <vishal.l.verma@intel.com>
++M: Dave Jiang <dave.jiang@intel.com>
++L: nvdimm@lists.linux.dev
++S: Supported
++F: drivers/dax/
++
++DEVICE FREQUENCY (DEVFREQ)
++M: MyungJoo Ham <myungjoo.ham@samsung.com>
++M: Kyungmin Park <kyungmin.park@samsung.com>
++M: Chanwoo Choi <cw00.choi@samsung.com>
++L: linux-pm@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git
++F: Documentation/devicetree/bindings/devfreq/
++F: drivers/devfreq/
++F: include/linux/devfreq.h
++F: include/trace/events/devfreq.h
++
++DEVICE FREQUENCY EVENT (DEVFREQ-EVENT)
++M: Chanwoo Choi <cw00.choi@samsung.com>
++L: linux-pm@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git
++F: Documentation/devicetree/bindings/devfreq/event/
++F: drivers/devfreq/devfreq-event.c
++F: drivers/devfreq/event/
++F: include/dt-bindings/pmu/exynos_ppmu.h
++F: include/linux/devfreq-event.h
++
++DEVICE NUMBER REGISTRY
++M: Torben Mathiasen <device@lanana.org>
++S: Maintained
++W: http://lanana.org/docs/device-list/index.html
++
++DEVICE RESOURCE MANAGEMENT HELPERS
++M: Hans de Goede <hdegoede@redhat.com>
++R: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
++S: Maintained
++F: include/linux/devm-helpers.h
++
++DEVICE-MAPPER (LVM)
++M: Alasdair Kergon <agk@redhat.com>
++M: Mike Snitzer <snitzer@redhat.com>
++M: dm-devel@redhat.com
++L: dm-devel@redhat.com
++S: Maintained
++W: http://sources.redhat.com/dm
++Q: http://patchwork.kernel.org/project/dm-devel/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git
++T: quilt http://people.redhat.com/agk/patches/linux/editing/
++F: Documentation/admin-guide/device-mapper/
++F: drivers/md/Kconfig
++F: drivers/md/Makefile
++F: drivers/md/dm*
++F: drivers/md/persistent-data/
++F: include/linux/device-mapper.h
++F: include/linux/dm-*.h
++F: include/uapi/linux/dm-*.h
++
++DEVLINK
++M: Jiri Pirko <jiri@nvidia.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: Documentation/networking/devlink
++F: include/net/devlink.h
++F: include/uapi/linux/devlink.h
++F: net/core/devlink.c
++
++DH ELECTRONICS IMX6 DHCOM BOARD SUPPORT
++M: Christoph Niedermaier <cniedermaier@dh-electronics.com>
++L: kernel@dh-electronics.com
++S: Maintained
++F: arch/arm/boot/dts/imx6*-dhcom-*
++
++DH ELECTRONICS STM32MP1 DHCOM/DHCOR BOARD SUPPORT
++M: Marek Vasut <marex@denx.de>
++L: kernel@dh-electronics.com
++S: Maintained
++F: arch/arm/boot/dts/stm32mp1*-dhcom-*
++F: arch/arm/boot/dts/stm32mp1*-dhcor-*
++
++DIALOG SEMICONDUCTOR DRIVERS
++M: Support Opensource <support.opensource@diasemi.com>
++S: Supported
++W: http://www.dialog-semiconductor.com/products
++F: Documentation/devicetree/bindings/input/da90??-onkey.txt
++F: Documentation/devicetree/bindings/input/dlg,da72??.txt
++F: Documentation/devicetree/bindings/mfd/da90*.txt
++F: Documentation/devicetree/bindings/regulator/dlg,da9*.yaml
++F: Documentation/devicetree/bindings/regulator/da92*.txt
++F: Documentation/devicetree/bindings/regulator/slg51000.txt
++F: Documentation/devicetree/bindings/sound/da[79]*.txt
++F: Documentation/devicetree/bindings/thermal/da90??-thermal.txt
++F: Documentation/devicetree/bindings/watchdog/da90??-wdt.txt
++F: Documentation/hwmon/da90??.rst
++F: drivers/gpio/gpio-da90??.c
++F: drivers/hwmon/da90??-hwmon.c
++F: drivers/iio/adc/da91??-*.c
++F: drivers/input/misc/da72??.[ch]
++F: drivers/input/misc/da90??_onkey.c
++F: drivers/input/touchscreen/da9052_tsi.c
++F: drivers/leds/leds-da90??.c
++F: drivers/mfd/da903x.c
++F: drivers/mfd/da90??-*.c
++F: drivers/mfd/da91??-*.c
++F: drivers/pinctrl/pinctrl-da90??.c
++F: drivers/power/supply/da9052-battery.c
++F: drivers/power/supply/da91??-*.c
++F: drivers/regulator/da9???-regulator.[ch]
++F: drivers/regulator/slg51000-regulator.[ch]
++F: drivers/rtc/rtc-da90??.c
++F: drivers/thermal/da90??-thermal.c
++F: drivers/video/backlight/da90??_bl.c
++F: drivers/watchdog/da90??_wdt.c
++F: include/dt-bindings/regulator/dlg,da9*-regulator.h
++F: include/linux/mfd/da903x.h
++F: include/linux/mfd/da9052/
++F: include/linux/mfd/da9055/
++F: include/linux/mfd/da9062/
++F: include/linux/mfd/da9063/
++F: include/linux/mfd/da9150/
++F: include/linux/regulator/da9211.h
++F: include/sound/da[79]*.h
++F: sound/soc/codecs/da[79]*.[ch]
++
++DIAMOND SYSTEMS GPIO-MM GPIO DRIVER
++M: William Breathitt Gray <vilhelm.gray@gmail.com>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: drivers/gpio/gpio-gpio-mm.c
++
++DIOLAN U2C-12 I2C DRIVER
++M: Guenter Roeck <linux@roeck-us.net>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: drivers/i2c/busses/i2c-diolan-u2c.c
++
++DIRECTORY NOTIFICATION (DNOTIFY)
++M: Jan Kara <jack@suse.cz>
++R: Amir Goldstein <amir73il@gmail.com>
++L: linux-fsdevel@vger.kernel.org
++S: Maintained
++F: Documentation/filesystems/dnotify.rst
++F: fs/notify/dnotify/
++F: include/linux/dnotify.h
++
++DISK GEOMETRY AND PARTITION HANDLING
++M: Andries Brouwer <aeb@cwi.nl>
++S: Maintained
++W: http://www.win.tue.nl/~aeb/linux/Large-Disk.html
++W: http://www.win.tue.nl/~aeb/linux/zip/zip-1.html
++W: http://www.win.tue.nl/~aeb/partitions/partition_types-1.html
++
++DISKQUOTA
++M: Jan Kara <jack@suse.com>
++S: Maintained
++F: Documentation/filesystems/quota.rst
++F: fs/quota/
++F: include/linux/quota*.h
++F: include/uapi/linux/quota*.h
++
++DISPLAYLINK USB 2.0 FRAMEBUFFER DRIVER (UDLFB)
++M: Bernie Thompson <bernie@plugable.com>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++W: http://plugable.com/category/projects/udlfb/
++F: Documentation/fb/udlfb.rst
++F: drivers/video/fbdev/udlfb.c
++F: include/video/udlfb.h
++
++DISTRIBUTED LOCK MANAGER (DLM)
++M: Christine Caulfield <ccaulfie@redhat.com>
++M: David Teigland <teigland@redhat.com>
++L: cluster-devel@redhat.com
++S: Supported
++W: http://sources.redhat.com/cluster/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm.git
++F: fs/dlm/
++
++DMA BUFFER SHARING FRAMEWORK
++M: Sumit Semwal <sumit.semwal@linaro.org>
++M: Christian König <christian.koenig@amd.com>
++L: linux-media@vger.kernel.org
++L: dri-devel@lists.freedesktop.org
++L: linaro-mm-sig@lists.linaro.org (moderated for non-subscribers)
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/driver-api/dma-buf.rst
++F: drivers/dma-buf/
++F: include/linux/*fence.h
++F: include/linux/dma-buf*
++F: include/linux/dma-resv.h
++K: \bdma_(?:buf|fence|resv)\b
++
++DMA GENERIC OFFLOAD ENGINE SUBSYSTEM
++M: Vinod Koul <vkoul@kernel.org>
++L: dmaengine@vger.kernel.org
++S: Maintained
++Q: https://patchwork.kernel.org/project/linux-dmaengine/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git
++F: Documentation/devicetree/bindings/dma/
++F: Documentation/driver-api/dmaengine/
++F: drivers/dma/
++F: include/linux/dma/
++F: include/linux/dmaengine.h
++F: include/linux/of_dma.h
++
++DMA MAPPING HELPERS
++M: Christoph Hellwig <hch@lst.de>
++M: Marek Szyprowski <m.szyprowski@samsung.com>
++R: Robin Murphy <robin.murphy@arm.com>
++L: iommu@lists.linux-foundation.org
++S: Supported
++W: http://git.infradead.org/users/hch/dma-mapping.git
++T: git git://git.infradead.org/users/hch/dma-mapping.git
++F: include/asm-generic/dma-mapping.h
++F: include/linux/dma-direct.h
++F: include/linux/dma-mapping.h
++F: include/linux/dma-map-ops.h
++F: kernel/dma/
++
++DMA MAPPING BENCHMARK
++M: Barry Song <song.bao.hua@hisilicon.com>
++L: iommu@lists.linux-foundation.org
++F: kernel/dma/map_benchmark.c
++F: tools/testing/selftests/dma/
++
++DMA-BUF HEAPS FRAMEWORK
++M: Sumit Semwal <sumit.semwal@linaro.org>
++R: Benjamin Gaignard <benjamin.gaignard@linaro.org>
++R: Liam Mark <lmark@codeaurora.org>
++R: Laura Abbott <labbott@redhat.com>
++R: Brian Starkey <Brian.Starkey@arm.com>
++R: John Stultz <john.stultz@linaro.org>
++L: linux-media@vger.kernel.org
++L: dri-devel@lists.freedesktop.org
++L: linaro-mm-sig@lists.linaro.org (moderated for non-subscribers)
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/dma-buf/dma-heap.c
++F: drivers/dma-buf/heaps/*
++F: include/linux/dma-heap.h
++F: include/uapi/linux/dma-heap.h
++
++DMC FREQUENCY DRIVER FOR SAMSUNG EXYNOS5422
++M: Lukasz Luba <lukasz.luba@arm.com>
++L: linux-pm@vger.kernel.org
++L: linux-samsung-soc@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/memory-controllers/samsung,exynos5422-dmc.yaml
++F: drivers/memory/samsung/exynos5422-dmc.c
++
++DME1737 HARDWARE MONITOR DRIVER
++M: Juerg Haefliger <juergh@gmail.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/dme1737.rst
++F: drivers/hwmon/dme1737.c
++
++DMI/SMBIOS SUPPORT
++M: Jean Delvare <jdelvare@suse.com>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging.git dmi-for-next
++F: Documentation/ABI/testing/sysfs-firmware-dmi-tables
++F: drivers/firmware/dmi-id.c
++F: drivers/firmware/dmi_scan.c
++F: include/linux/dmi.h
++
++DOCUMENTATION
++M: Jonathan Corbet <corbet@lwn.net>
++L: linux-doc@vger.kernel.org
++S: Maintained
++P: Documentation/doc-guide/maintainer-profile.rst
++T: git git://git.lwn.net/linux.git docs-next
++F: Documentation/
++F: scripts/documentation-file-ref-check
++F: scripts/kernel-doc
++F: scripts/sphinx-pre-install
++X: Documentation/ABI/
++X: Documentation/admin-guide/media/
++X: Documentation/devicetree/
++X: Documentation/driver-api/media/
++X: Documentation/firmware-guide/acpi/
++X: Documentation/i2c/
++X: Documentation/power/
++X: Documentation/spi/
++X: Documentation/userspace-api/media/
++
++DOCUMENTATION REPORTING ISSUES
++M: Thorsten Leemhuis <linux@leemhuis.info>
++L: linux-doc@vger.kernel.org
++S: Maintained
++F: Documentation/admin-guide/reporting-issues.rst
++
++DOCUMENTATION SCRIPTS
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-doc@vger.kernel.org
++S: Maintained
++F: Documentation/sphinx/parse-headers.pl
++F: scripts/documentation-file-ref-check
++F: scripts/sphinx-pre-install
++
++DOCUMENTATION/ITALIAN
++M: Federico Vaga <federico.vaga@vaga.pv.it>
++L: linux-doc@vger.kernel.org
++S: Maintained
++F: Documentation/translations/it_IT
++
++DONGWOON DW9714 LENS VOICE COIL DRIVER
++M: Sakari Ailus <sakari.ailus@linux.intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/dongwoon,dw9714.txt
++F: drivers/media/i2c/dw9714.c
++
++DONGWOON DW9768 LENS VOICE COIL DRIVER
++M: Dongchun Zhu <dongchun.zhu@mediatek.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/dongwoon,dw9768.yaml
++F: drivers/media/i2c/dw9768.c
++
++DONGWOON DW9807 LENS VOICE COIL DRIVER
++M: Sakari Ailus <sakari.ailus@linux.intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/dongwoon,dw9807-vcm.txt
++F: drivers/media/i2c/dw9807-vcm.c
++
++DOUBLETALK DRIVER
++M: "James R. Van Zandt" <jrv@vanzandt.mv.com>
++L: blinux-list@redhat.com
++S: Maintained
++F: drivers/char/dtlk.c
++F: include/linux/dtlk.h
++
++DPAA2 DATAPATH I/O (DPIO) DRIVER
++M: Roy Pledge <Roy.Pledge@nxp.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: drivers/soc/fsl/dpio
++
++DPAA2 ETHERNET DRIVER
++M: Ioana Ciornei <ioana.ciornei@nxp.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/networking/device_drivers/ethernet/freescale/dpaa2/ethernet-driver.rst
++F: Documentation/networking/device_drivers/ethernet/freescale/dpaa2/mac-phy-support.rst
++F: drivers/net/ethernet/freescale/dpaa2/Kconfig
++F: drivers/net/ethernet/freescale/dpaa2/Makefile
++F: drivers/net/ethernet/freescale/dpaa2/dpaa2-eth*
++F: drivers/net/ethernet/freescale/dpaa2/dpaa2-mac*
++F: drivers/net/ethernet/freescale/dpaa2/dpkg.h
++F: drivers/net/ethernet/freescale/dpaa2/dpmac*
++F: drivers/net/ethernet/freescale/dpaa2/dpni*
++
++DPAA2 ETHERNET SWITCH DRIVER
++M: Ioana Ciornei <ioana.ciornei@nxp.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/networking/device_drivers/ethernet/freescale/dpaa2/switch-driver.rst
++F: drivers/net/ethernet/freescale/dpaa2/dpaa2-switch*
++F: drivers/net/ethernet/freescale/dpaa2/dpsw*
++
++DPT_I2O SCSI RAID DRIVER
++M: Adaptec OEM Raid Solutions <aacraid@microsemi.com>
++L: linux-scsi@vger.kernel.org
++S: Maintained
++W: http://www.adaptec.com/
++F: drivers/scsi/dpt*
++F: drivers/scsi/dpt/
++
++DRBD DRIVER
++M: Philipp Reisner <philipp.reisner@linbit.com>
++M: Lars Ellenberg <lars.ellenberg@linbit.com>
++L: drbd-dev@lists.linbit.com
++S: Supported
++W: http://www.drbd.org
++T: git git://git.linbit.com/linux-drbd.git
++T: git git://git.linbit.com/drbd-8.4.git
++F: Documentation/admin-guide/blockdev/
++F: drivers/block/drbd/
++F: lib/lru_cache.c
++
++DRIVER COMPONENT FRAMEWORK
++L: dri-devel@lists.freedesktop.org
++F: drivers/base/component.c
++F: include/linux/component.h
++
++DRIVER CORE, KOBJECTS, DEBUGFS AND SYSFS
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++R: "Rafael J. Wysocki" <rafael@kernel.org>
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
++F: Documentation/core-api/kobject.rst
++F: drivers/base/
++F: fs/debugfs/
++F: fs/sysfs/
++F: include/linux/debugfs.h
++F: include/linux/kobj*
++F: lib/kobj*
++
++DRIVERS FOR OMAP ADAPTIVE VOLTAGE SCALING (AVS)
++M: Nishanth Menon <nm@ti.com>
++L: linux-pm@vger.kernel.org
++S: Maintained
++F: drivers/soc/ti/smartreflex.c
++F: include/linux/power/smartreflex.h
++
++DRM DRIVER FOR ALLWINNER DE2 AND DE3 ENGINE
++M: Maxime Ripard <mripard@kernel.org>
++M: Chen-Yu Tsai <wens@csie.org>
++R: Jernej Skrabec <jernej.skrabec@gmail.com>
++L: dri-devel@lists.freedesktop.org
++S: Supported
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/sun4i/sun8i*
++
++DRM DRIVER FOR ARM PL111 CLCD
++M: Emma Anholt <emma@anholt.net>
++S: Supported
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/pl111/
++
++DRM DRIVER FOR ARM VERSATILE TFT PANELS
++M: Linus Walleij <linus.walleij@linaro.org>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/panel/arm,versatile-tft-panel.yaml
++F: drivers/gpu/drm/panel/panel-arm-versatile.c
++
++DRM DRIVER FOR ASPEED BMC GFX
++M: Joel Stanley <joel@jms.id.au>
++L: linux-aspeed@lists.ozlabs.org (moderated for non-subscribers)
++S: Supported
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/gpu/aspeed-gfx.txt
++F: drivers/gpu/drm/aspeed/
++
++DRM DRIVER FOR AST SERVER GRAPHICS CHIPS
++M: Dave Airlie <airlied@redhat.com>
++R: Thomas Zimmermann <tzimmermann@suse.de>
++L: dri-devel@lists.freedesktop.org
++S: Supported
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/ast/
++
++DRM DRIVER FOR BOCHS VIRTUAL GPU
++M: Gerd Hoffmann <kraxel@redhat.com>
++L: virtualization@lists.linux-foundation.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/tiny/bochs.c
++
++DRM DRIVER FOR BOE HIMAX8279D PANELS
++M: Jerry Han <hanxu5@huaqin.corp-partner.google.com>
++S: Maintained
++F: Documentation/devicetree/bindings/display/panel/boe,himax8279d.yaml
++F: drivers/gpu/drm/panel/panel-boe-himax8279d.c
++
++DRM DRIVER FOR CHIPONE ICN6211 MIPI-DSI to RGB CONVERTER BRIDGE
++M: Jagan Teki <jagan@amarulasolutions.com>
++S: Maintained
++F: Documentation/devicetree/bindings/display/bridge/chipone,icn6211.yaml
++F: drivers/gpu/drm/bridge/chipone-icn6211.c
++
++DRM DRIVER FOR FARADAY TVE200 TV ENCODER
++M: Linus Walleij <linus.walleij@linaro.org>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/tve200/
++
++DRM DRIVER FOR FEIXIN K101 IM2BA02 MIPI-DSI LCD PANELS
++M: Icenowy Zheng <icenowy@aosc.io>
++S: Maintained
++F: Documentation/devicetree/bindings/display/panel/feixin,k101-im2ba02.yaml
++F: drivers/gpu/drm/panel/panel-feixin-k101-im2ba02.c
++
++DRM DRIVER FOR FEIYANG FY07024DI26A30-D MIPI-DSI LCD PANELS
++M: Jagan Teki <jagan@amarulasolutions.com>
++S: Maintained
++F: Documentation/devicetree/bindings/display/panel/feiyang,fy07024di26a30d.yaml
++F: drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c
++
++DRM DRIVER FOR GENERIC USB DISPLAY
++M: Noralf Trønnes <noralf@tronnes.org>
++S: Maintained
++W: https://github.com/notro/gud/wiki
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/gud/
++F: include/drm/gud.h
++
++DRM DRIVER FOR GRAIN MEDIA GM12U320 PROJECTORS
++M: Hans de Goede <hdegoede@redhat.com>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/tiny/gm12u320.c
++
++DRM DRIVER FOR HX8357D PANELS
++M: Emma Anholt <emma@anholt.net>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/himax,hx8357d.txt
++F: drivers/gpu/drm/tiny/hx8357d.c
++
++DRM DRIVER FOR ILITEK ILI9225 PANELS
++M: David Lechner <david@lechnology.com>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/ilitek,ili9225.txt
++F: drivers/gpu/drm/tiny/ili9225.c
++
++DRM DRIVER FOR ILITEK ILI9486 PANELS
++M: Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
++F: drivers/gpu/drm/tiny/ili9486.c
++
++DRM DRIVER FOR INTEL I810 VIDEO CARDS
++S: Orphan / Obsolete
++F: drivers/gpu/drm/i810/
++F: include/uapi/drm/i810_drm.h
++
++DRM DRIVER FOR LVDS PANELS
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++L: dri-devel@lists.freedesktop.org
++T: git git://anongit.freedesktop.org/drm/drm-misc
++S: Maintained
++F: drivers/gpu/drm/panel/panel-lvds.c
++F: Documentation/devicetree/bindings/display/panel/lvds.yaml
++
++DRM DRIVER FOR MANTIX MLAF057WE51 PANELS
++M: Guido Günther <agx@sigxcpu.org>
++R: Purism Kernel Team <kernel@puri.sm>
++S: Maintained
++F: Documentation/devicetree/bindings/display/panel/mantix,mlaf057we51-x.yaml
++F: drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c
++
++DRM DRIVER FOR MATROX G200/G400 GRAPHICS CARDS
++S: Orphan / Obsolete
++F: drivers/gpu/drm/mga/
++F: include/uapi/drm/mga_drm.h
++
++DRM DRIVER FOR MGA G200 GRAPHICS CHIPS
++M: Dave Airlie <airlied@redhat.com>
++R: Thomas Zimmermann <tzimmermann@suse.de>
++L: dri-devel@lists.freedesktop.org
++S: Supported
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/mgag200/
++
++DRM DRIVER FOR MI0283QT
++M: Noralf Trønnes <noralf@tronnes.org>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/multi-inno,mi0283qt.txt
++F: drivers/gpu/drm/tiny/mi0283qt.c
++
++DRM DRIVER FOR MSM ADRENO GPU
++M: Rob Clark <robdclark@gmail.com>
++M: Sean Paul <sean@poorly.run>
++L: linux-arm-msm@vger.kernel.org
++L: dri-devel@lists.freedesktop.org
++L: freedreno@lists.freedesktop.org
++S: Maintained
++T: git https://gitlab.freedesktop.org/drm/msm.git
++F: Documentation/devicetree/bindings/display/msm/
++F: drivers/gpu/drm/msm/
++F: include/uapi/drm/msm_drm.h
++
++DRM DRIVER FOR NOVATEK NT35510 PANELS
++M: Linus Walleij <linus.walleij@linaro.org>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml
++F: drivers/gpu/drm/panel/panel-novatek-nt35510.c
++
++DRM DRIVER FOR NOVATEK NT36672A PANELS
++M: Sumit Semwal <sumit.semwal@linaro.org>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/panel/novatek,nt36672a.yaml
++F: drivers/gpu/drm/panel/panel-novatek-nt36672a.c
++
++DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS
++M: Ben Skeggs <bskeggs@redhat.com>
++L: dri-devel@lists.freedesktop.org
++L: nouveau@lists.freedesktop.org
++S: Supported
++T: git git://github.com/skeggsb/linux
++F: drivers/gpu/drm/nouveau/
++F: include/uapi/drm/nouveau_drm.h
++
++DRM DRIVER FOR OLIMEX LCD-OLINUXINO PANELS
++M: Stefan Mavrodiev <stefan@olimex.com>
++S: Maintained
++F: Documentation/devicetree/bindings/display/panel/olimex,lcd-olinuxino.yaml
++F: drivers/gpu/drm/panel/panel-olimex-lcd-olinuxino.c
++
++DRM DRIVER FOR PERVASIVE DISPLAYS REPAPER PANELS
++M: Noralf Trønnes <noralf@tronnes.org>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/repaper.txt
++F: drivers/gpu/drm/tiny/repaper.c
++
++DRM DRIVER FOR QEMU'S CIRRUS DEVICE
++M: Dave Airlie <airlied@redhat.com>
++M: Gerd Hoffmann <kraxel@redhat.com>
++L: virtualization@lists.linux-foundation.org
++S: Obsolete
++W: https://www.kraxel.org/blog/2014/10/qemu-using-cirrus-considered-harmful/
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/tiny/cirrus.c
++
++DRM DRIVER FOR QXL VIRTUAL GPU
++M: Dave Airlie <airlied@redhat.com>
++M: Gerd Hoffmann <kraxel@redhat.com>
++L: virtualization@lists.linux-foundation.org
++L: spice-devel@lists.freedesktop.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/qxl/
++F: include/uapi/drm/qxl_drm.h
++
++DRM DRIVER FOR RAGE 128 VIDEO CARDS
++S: Orphan / Obsolete
++F: drivers/gpu/drm/r128/
++F: include/uapi/drm/r128_drm.h
++
++DRM DRIVER FOR RAYDIUM RM67191 PANELS
++M: Robert Chiras <robert.chiras@nxp.com>
++S: Maintained
++F: Documentation/devicetree/bindings/display/panel/raydium,rm67191.yaml
++F: drivers/gpu/drm/panel/panel-raydium-rm67191.c
++
++DRM DRIVER FOR SAMSUNG DB7430 PANELS
++M: Linus Walleij <linus.walleij@linaro.org>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/panel/samsung,lms397kf04.yaml
++F: drivers/gpu/drm/panel/panel-samsung-db7430.c
++
++DRM DRIVER FOR SITRONIX ST7703 PANELS
++M: Guido Günther <agx@sigxcpu.org>
++R: Purism Kernel Team <kernel@puri.sm>
++R: Ondrej Jirman <megous@megous.com>
++S: Maintained
++F: Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml
++F: drivers/gpu/drm/panel/panel-sitronix-st7703.c
++
++DRM DRIVER FOR SAVAGE VIDEO CARDS
++S: Orphan / Obsolete
++F: drivers/gpu/drm/savage/
++F: include/uapi/drm/savage_drm.h
++
++DRM DRIVER FOR SIMPLE FRAMEBUFFERS
++M: Thomas Zimmermann <tzimmermann@suse.de>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/tiny/simpledrm.c
++
++DRM DRIVER FOR SIS VIDEO CARDS
++S: Orphan / Obsolete
++F: drivers/gpu/drm/sis/
++F: include/uapi/drm/sis_drm.h
++
++DRM DRIVER FOR SITRONIX ST7586 PANELS
++M: David Lechner <david@lechnology.com>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/sitronix,st7586.txt
++F: drivers/gpu/drm/tiny/st7586.c
++
++DRM DRIVER FOR SITRONIX ST7701 PANELS
++M: Jagan Teki <jagan@amarulasolutions.com>
++S: Maintained
++F: Documentation/devicetree/bindings/display/panel/sitronix,st7701.yaml
++F: drivers/gpu/drm/panel/panel-sitronix-st7701.c
++
++DRM DRIVER FOR SITRONIX ST7735R PANELS
++M: David Lechner <david@lechnology.com>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/sitronix,st7735r.yaml
++F: drivers/gpu/drm/tiny/st7735r.c
++
++DRM DRIVER FOR SONY ACX424AKP PANELS
++M: Linus Walleij <linus.walleij@linaro.org>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/panel/panel-sony-acx424akp.c
++
++DRM DRIVER FOR ST-ERICSSON MCDE
++M: Linus Walleij <linus.walleij@linaro.org>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/ste,mcde.yaml
++F: drivers/gpu/drm/mcde/
++
++DRM DRIVER FOR TDFX VIDEO CARDS
++S: Orphan / Obsolete
++F: drivers/gpu/drm/tdfx/
++
++DRM DRIVER FOR TPO TPG110 PANELS
++M: Linus Walleij <linus.walleij@linaro.org>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/panel/tpo,tpg110.yaml
++F: drivers/gpu/drm/panel/panel-tpo-tpg110.c
++
++DRM DRIVER FOR USB DISPLAYLINK VIDEO ADAPTERS
++M: Dave Airlie <airlied@redhat.com>
++R: Sean Paul <sean@poorly.run>
++R: Thomas Zimmermann <tzimmermann@suse.de>
++L: dri-devel@lists.freedesktop.org
++S: Supported
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/udl/
++
++DRM DRIVER FOR VIRTUAL KERNEL MODESETTING (VKMS)
++M: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
++M: Melissa Wen <melissa.srw@gmail.com>
++R: Haneen Mohammed <hamohammed.sa@gmail.com>
++R: Daniel Vetter <daniel@ffwll.ch>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/gpu/vkms.rst
++F: drivers/gpu/drm/vkms/
++
++DRM DRIVER FOR VIRTUALBOX VIRTUAL GPU
++M: Hans de Goede <hdegoede@redhat.com>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/vboxvideo/
++
++DRM DRIVER FOR VMWARE VIRTUAL GPU
++M: "VMware Graphics" <linux-graphics-maintainer@vmware.com>
++M: Zack Rusin <zackr@vmware.com>
++L: dri-devel@lists.freedesktop.org
++S: Supported
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/vmwgfx/
++F: include/uapi/drm/vmwgfx_drm.h
++
++DRM DRIVER FOR WIDECHIPS WS2401 PANELS
++M: Linus Walleij <linus.walleij@linaro.org>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/panel/samsung,lms380kf01.yaml
++F: drivers/gpu/drm/panel/panel-widechips-ws2401.c
++
++DRM DRIVERS
++M: David Airlie <airlied@linux.ie>
++M: Daniel Vetter <daniel@ffwll.ch>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++B: https://gitlab.freedesktop.org/drm
++C: irc://irc.oftc.net/dri-devel
++T: git git://anongit.freedesktop.org/drm/drm
++F: Documentation/devicetree/bindings/display/
++F: Documentation/devicetree/bindings/gpu/
++F: Documentation/gpu/
++F: drivers/gpu/
++F: include/drm/
++F: include/linux/vga*
++F: include/uapi/drm/
++
++DRM DRIVERS AND MISC GPU PATCHES
++M: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
++M: Maxime Ripard <mripard@kernel.org>
++M: Thomas Zimmermann <tzimmermann@suse.de>
++S: Maintained
++W: https://01.org/linuxgraphics/gfx-docs/maintainer-tools/drm-misc.html
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/gpu/
++F: drivers/gpu/drm/*
++F: drivers/gpu/vga/
++F: include/drm/drm*
++F: include/linux/vga*
++F: include/uapi/drm/drm*
++
++DRM DRIVERS FOR ALLWINNER A10
++M: Maxime Ripard <mripard@kernel.org>
++M: Chen-Yu Tsai <wens@csie.org>
++L: dri-devel@lists.freedesktop.org
++S: Supported
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/allwinner*
++F: drivers/gpu/drm/sun4i/
++
++DRM DRIVERS FOR AMLOGIC SOCS
++M: Neil Armstrong <narmstrong@baylibre.com>
++L: dri-devel@lists.freedesktop.org
++L: linux-amlogic@lists.infradead.org
++S: Supported
++W: http://linux-meson.com/
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.yaml
++F: Documentation/devicetree/bindings/display/amlogic,meson-vpu.yaml
++F: Documentation/gpu/meson.rst
++F: drivers/gpu/drm/meson/
++
++DRM DRIVERS FOR ATMEL HLCDC
++M: Sam Ravnborg <sam@ravnborg.org>
++M: Boris Brezillon <bbrezillon@kernel.org>
++L: dri-devel@lists.freedesktop.org
++S: Supported
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/atmel/
++F: drivers/gpu/drm/atmel-hlcdc/
++
++DRM DRIVERS FOR BRIDGE CHIPS
++M: Andrzej Hajda <a.hajda@samsung.com>
++M: Neil Armstrong <narmstrong@baylibre.com>
++M: Robert Foss <robert.foss@linaro.org>
++R: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
++R: Jonas Karlman <jonas@kwiboo.se>
++R: Jernej Skrabec <jernej.skrabec@gmail.com>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/bridge/
++
++DRM DRIVERS FOR EXYNOS
++M: Inki Dae <inki.dae@samsung.com>
++M: Joonyoung Shim <jy0922.shim@samsung.com>
++M: Seung-Woo Kim <sw0312.kim@samsung.com>
++M: Kyungmin Park <kyungmin.park@samsung.com>
++L: dri-devel@lists.freedesktop.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git
++F: Documentation/devicetree/bindings/display/exynos/
++F: drivers/gpu/drm/exynos/
++F: include/uapi/drm/exynos_drm.h
++
++DRM DRIVERS FOR FREESCALE DCU
++M: Stefan Agner <stefan@agner.ch>
++M: Alison Wang <alison.wang@nxp.com>
++L: dri-devel@lists.freedesktop.org
++S: Supported
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/fsl,dcu.txt
++F: Documentation/devicetree/bindings/display/fsl,tcon.txt
++F: drivers/gpu/drm/fsl-dcu/
++
++DRM DRIVERS FOR FREESCALE IMX
++M: Philipp Zabel <p.zabel@pengutronix.de>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++F: Documentation/devicetree/bindings/display/imx/
++F: drivers/gpu/drm/imx/
++F: drivers/gpu/ipu-v3/
++
++DRM DRIVERS FOR GMA500 (Poulsbo, Moorestown and derivative chipsets)
++M: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++T: git git://github.com/patjak/drm-gma500
++F: drivers/gpu/drm/gma500/
++
++DRM DRIVERS FOR HISILICON
++M: Xinliang Liu <xinliang.liu@linaro.org>
++M: Tian Tao <tiantao6@hisilicon.com>
++R: John Stultz <john.stultz@linaro.org>
++R: Xinwei Kong <kong.kongxinwei@hisilicon.com>
++R: Chen Feng <puck.chen@hisilicon.com>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/hisilicon/
++F: drivers/gpu/drm/hisilicon/
++
++DRM DRIVER FOR HYPERV SYNTHETIC VIDEO DEVICE
++M: Deepak Rawat <drawat.floss@gmail.com>
++L: linux-hyperv@vger.kernel.org
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/hyperv
++
++DRM DRIVERS FOR LIMA
++M: Qiang Yu <yuq825@gmail.com>
++L: dri-devel@lists.freedesktop.org
++L: lima@lists.freedesktop.org (moderated for non-subscribers)
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/lima/
++F: include/uapi/drm/lima_drm.h
++
++DRM DRIVERS FOR MEDIATEK
++M: Chun-Kuang Hu <chunkuang.hu@kernel.org>
++M: Philipp Zabel <p.zabel@pengutronix.de>
++L: dri-devel@lists.freedesktop.org
++L: linux-mediatek@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++F: Documentation/devicetree/bindings/display/mediatek/
++F: drivers/gpu/drm/mediatek/
++F: drivers/phy/mediatek/phy-mtk-hdmi*
++F: drivers/phy/mediatek/phy-mtk-mipi*
++
++DRM DRIVERS FOR NVIDIA TEGRA
++M: Thierry Reding <thierry.reding@gmail.com>
++L: dri-devel@lists.freedesktop.org
++L: linux-tegra@vger.kernel.org
++S: Supported
++T: git git://anongit.freedesktop.org/tegra/linux.git
++F: Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
++F: drivers/gpu/drm/tegra/
++F: drivers/gpu/host1x/
++F: include/linux/host1x.h
++F: include/uapi/drm/tegra_drm.h
++
++DRM DRIVERS FOR RENESAS
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++M: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
++L: dri-devel@lists.freedesktop.org
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++T: git git://linuxtv.org/pinchartl/media drm/du/next
++F: Documentation/devicetree/bindings/display/bridge/renesas,dw-hdmi.yaml
++F: Documentation/devicetree/bindings/display/bridge/renesas,lvds.yaml
++F: Documentation/devicetree/bindings/display/renesas,du.yaml
++F: drivers/gpu/drm/rcar-du/
++F: drivers/gpu/drm/shmobile/
++F: include/linux/platform_data/shmob_drm.h
++
++DRM DRIVERS FOR ROCKCHIP
++M: Sandy Huang <hjc@rock-chips.com>
++M: Heiko Stübner <heiko@sntech.de>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/rockchip/
++F: drivers/gpu/drm/rockchip/
++
++DRM DRIVERS FOR STI
++M: Benjamin Gaignard <benjamin.gaignard@linaro.org>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/st,stih4xx.txt
++F: drivers/gpu/drm/sti
++
++DRM DRIVERS FOR STM
++M: Yannick Fertre <yannick.fertre@foss.st.com>
++M: Philippe Cornu <philippe.cornu@foss.st.com>
++M: Benjamin Gaignard <benjamin.gaignard@linaro.org>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml
++F: drivers/gpu/drm/stm
++
++DRM DRIVERS FOR TI KEYSTONE
++M: Jyri Sarha <jyri.sarha@iki.fi>
++M: Tomi Valkeinen <tomba@kernel.org>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/ti/ti,am65x-dss.yaml
++F: Documentation/devicetree/bindings/display/ti/ti,j721e-dss.yaml
++F: Documentation/devicetree/bindings/display/ti/ti,k2g-dss.yaml
++F: drivers/gpu/drm/tidss/
++
++DRM DRIVERS FOR TI LCDC
++M: Jyri Sarha <jyri.sarha@iki.fi>
++R: Tomi Valkeinen <tomba@kernel.org>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++F: Documentation/devicetree/bindings/display/tilcdc/
++F: drivers/gpu/drm/tilcdc/
++
++DRM DRIVERS FOR TI OMAP
++M: Tomi Valkeinen <tomba@kernel.org>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++F: Documentation/devicetree/bindings/display/ti/
++F: drivers/gpu/drm/omapdrm/
++
++DRM DRIVERS FOR V3D
++M: Emma Anholt <emma@anholt.net>
++S: Supported
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml
++F: drivers/gpu/drm/v3d/
++F: include/uapi/drm/v3d_drm.h
++
++DRM DRIVERS FOR VC4
++M: Emma Anholt <emma@anholt.net>
++M: Maxime Ripard <mripard@kernel.org>
++S: Supported
++T: git git://github.com/anholt/linux
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/brcm,bcm2835-*.yaml
++F: drivers/gpu/drm/vc4/
++F: include/uapi/drm/vc4_drm.h
++
++DRM DRIVERS FOR VIVANTE GPU IP
++M: Lucas Stach <l.stach@pengutronix.de>
++R: Russell King <linux+etnaviv@armlinux.org.uk>
++R: Christian Gmeiner <christian.gmeiner@gmail.com>
++L: etnaviv@lists.freedesktop.org (moderated for non-subscribers)
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++F: Documentation/devicetree/bindings/gpu/vivante,gc.yaml
++F: drivers/gpu/drm/etnaviv/
++F: include/uapi/drm/etnaviv_drm.h
++
++DRM DRIVERS FOR XEN
++M: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
++L: dri-devel@lists.freedesktop.org
++L: xen-devel@lists.xenproject.org (moderated for non-subscribers)
++S: Supported
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/gpu/xen-front.rst
++F: drivers/gpu/drm/xen/
++
++DRM DRIVERS FOR XILINX
++M: Hyun Kwon <hyun.kwon@xilinx.com>
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/xlnx/
++F: drivers/gpu/drm/xlnx/
++
++DRM PANEL DRIVERS
++M: Thierry Reding <thierry.reding@gmail.com>
++R: Sam Ravnborg <sam@ravnborg.org>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/panel/
++F: drivers/gpu/drm/drm_panel.c
++F: drivers/gpu/drm/panel/
++F: include/drm/drm_panel.h
++
++DRM TTM SUBSYSTEM
++M: Christian Koenig <christian.koenig@amd.com>
++M: Huang Rui <ray.huang@amd.com>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/ttm/
++F: include/drm/ttm/
++
++DSBR100 USB FM RADIO DRIVER
++M: Alexey Klimov <klimov.linux@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/dsbr100.c
++
++DT3155 MEDIA DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/pci/dt3155/
++
++DVB_USB_AF9015 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/usb/dvb-usb-v2/af9015*
++
++DVB_USB_AF9035 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/usb/dvb-usb-v2/af9035*
++
++DVB_USB_ANYSEE MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/usb/dvb-usb-v2/anysee*
++
++DVB_USB_AU6610 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/usb/dvb-usb-v2/au6610*
++
++DVB_USB_CE6230 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/usb/dvb-usb-v2/ce6230*
++
++DVB_USB_CXUSB MEDIA DRIVER
++M: Michael Krufky <mkrufky@linuxtv.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://github.com/mkrufky
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/usb/dvb-usb/cxusb*
++
++DVB_USB_EC168 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/usb/dvb-usb-v2/ec168*
++
++DVB_USB_GL861 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/usb/dvb-usb-v2/gl861*
++
++DVB_USB_MXL111SF MEDIA DRIVER
++M: Michael Krufky <mkrufky@linuxtv.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://github.com/mkrufky
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/mkrufky/mxl111sf.git
++F: drivers/media/usb/dvb-usb-v2/mxl111sf*
++
++DVB_USB_RTL28XXU MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/usb/dvb-usb-v2/rtl28xxu*
++
++DVB_USB_V2 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/usb/dvb-usb-v2/dvb_usb*
++F: drivers/media/usb/dvb-usb-v2/usb_urb.c
++
++DYNAMIC DEBUG
++M: Jason Baron <jbaron@akamai.com>
++S: Maintained
++F: include/linux/dynamic_debug.h
++F: lib/dynamic_debug.c
++
++DYNAMIC INTERRUPT MODERATION
++M: Tal Gilboa <talgi@nvidia.com>
++S: Maintained
++F: Documentation/networking/net_dim.rst
++F: include/linux/dim.h
++F: lib/dim/
++
++DZ DECSTATION DZ11 SERIAL DRIVER
++M: "Maciej W. Rozycki" <macro@orcam.me.uk>
++S: Maintained
++F: drivers/tty/serial/dz.*
++
++E3X0 POWER BUTTON DRIVER
++M: Moritz Fischer <moritz.fischer@ettus.com>
++L: usrp-users@lists.ettus.com
++S: Supported
++W: http://www.ettus.com
++F: Documentation/devicetree/bindings/input/e3x0-button.txt
++F: drivers/input/misc/e3x0-button.c
++
++E4000 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/tuners/e4000*
++
++EARTH_PT1 MEDIA DRIVER
++M: Akihiro Tsukada <tskd08@gmail.com>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++F: drivers/media/pci/pt1/
++
++EARTH_PT3 MEDIA DRIVER
++M: Akihiro Tsukada <tskd08@gmail.com>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++F: drivers/media/pci/pt3/
++
++EC100 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/dvb-frontends/ec100*
++
++ECRYPT FILE SYSTEM
++M: Tyler Hicks <code@tyhicks.com>
++L: ecryptfs@vger.kernel.org
++S: Odd Fixes
++W: http://ecryptfs.org
++W: https://launchpad.net/ecryptfs
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs.git
++F: Documentation/filesystems/ecryptfs.rst
++F: fs/ecryptfs/
++
++EDAC-AMD64
++M: Yazen Ghannam <yazen.ghannam@amd.com>
++L: linux-edac@vger.kernel.org
++S: Supported
++F: drivers/edac/amd64_edac*
++F: drivers/edac/mce_amd*
++
++EDAC-ARMADA
++M: Jan Luebbe <jlu@pengutronix.de>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/memory-controllers/marvell,mvebu-sdram-controller.yaml
++F: drivers/edac/armada_xp_*
++
++EDAC-AST2500
++M: Stefan Schaeckeler <sschaeck@cisco.com>
++S: Supported
++F: Documentation/devicetree/bindings/edac/aspeed-sdram-edac.txt
++F: drivers/edac/aspeed_edac.c
++
++EDAC-BLUEFIELD
++M: Shravan Kumar Ramani <shravankr@nvidia.com>
++S: Supported
++F: drivers/edac/bluefield_edac.c
++
++EDAC-CALXEDA
++M: Andre Przywara <andre.przywara@arm.com>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/highbank*
++
++EDAC-CAVIUM OCTEON
++M: Ralf Baechle <ralf@linux-mips.org>
++L: linux-edac@vger.kernel.org
++L: linux-mips@vger.kernel.org
++S: Supported
++F: drivers/edac/octeon_edac*
++
++EDAC-CAVIUM THUNDERX
++M: Robert Richter <rric@kernel.org>
++L: linux-edac@vger.kernel.org
++S: Odd Fixes
++F: drivers/edac/thunderx_edac*
++
++EDAC-CORE
++M: Borislav Petkov <bp@alien8.de>
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++M: Tony Luck <tony.luck@intel.com>
++R: James Morse <james.morse@arm.com>
++R: Robert Richter <rric@kernel.org>
++L: linux-edac@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras.git edac-for-next
++F: Documentation/admin-guide/ras.rst
++F: Documentation/driver-api/edac.rst
++F: drivers/edac/
++F: include/linux/edac.h
++
++EDAC-DMC520
++M: Lei Wang <lewan@microsoft.com>
++L: linux-edac@vger.kernel.org
++S: Supported
++F: drivers/edac/dmc520_edac.c
++
++EDAC-E752X
++M: Mark Gross <mark.gross@intel.com>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/e752x_edac.c
++
++EDAC-E7XXX
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/e7xxx_edac.c
++
++EDAC-FSL_DDR
++M: York Sun <york.sun@nxp.com>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/fsl_ddr_edac.*
++
++EDAC-GHES
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/ghes_edac.c
++
++EDAC-I10NM
++M: Tony Luck <tony.luck@intel.com>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/i10nm_base.c
++
++EDAC-I3000
++L: linux-edac@vger.kernel.org
++S: Orphan
++F: drivers/edac/i3000_edac.c
++
++EDAC-I5000
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/i5000_edac.c
++
++EDAC-I5400
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/i5400_edac.c
++
++EDAC-I7300
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/i7300_edac.c
++
++EDAC-I7CORE
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/i7core_edac.c
++
++EDAC-I82443BXGX
++M: Tim Small <tim@buttersideup.com>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/i82443bxgx_edac.c
++
++EDAC-I82975X
++M: "Arvind R." <arvino55@gmail.com>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/i82975x_edac.c
++
++EDAC-IE31200
++M: Jason Baron <jbaron@akamai.com>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/ie31200_edac.c
++
++EDAC-IGEN6
++M: Tony Luck <tony.luck@intel.com>
++R: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/igen6_edac.c
++
++EDAC-MPC85XX
++M: Johannes Thumshirn <morbidrsa@gmail.com>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/mpc85xx_edac.[ch]
++
++EDAC-PASEMI
++M: Egor Martovetsky <egor@pasemi.com>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/pasemi_edac.c
++
++EDAC-PND2
++M: Tony Luck <tony.luck@intel.com>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/pnd2_edac.[ch]
++
++EDAC-QCOM
++M: Channagoud Kadabi <ckadabi@codeaurora.org>
++M: Venkata Narendra Kumar Gutta <vnkgutta@codeaurora.org>
++L: linux-arm-msm@vger.kernel.org
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/qcom_edac.c
++
++EDAC-R82600
++M: Tim Small <tim@buttersideup.com>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/r82600_edac.c
++
++EDAC-SBRIDGE
++M: Tony Luck <tony.luck@intel.com>
++R: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/sb_edac.c
++
++EDAC-SIFIVE
++M: Yash Shah <yash.shah@sifive.com>
++L: linux-edac@vger.kernel.org
++S: Supported
++F: drivers/edac/sifive_edac.c
++
++EDAC-SKYLAKE
++M: Tony Luck <tony.luck@intel.com>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: drivers/edac/skx_*.[ch]
++
++EDAC-TI
++M: Tero Kristo <kristo@kernel.org>
++L: linux-edac@vger.kernel.org
++S: Odd Fixes
++F: drivers/edac/ti_edac.c
++
++EDIROL UA-101/UA-1000 DRIVER
++M: Clemens Ladisch <clemens@ladisch.de>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
++F: sound/usb/misc/ua101.c
++
++EFI TEST DRIVER
++M: Ivan Hu <ivan.hu@canonical.com>
++M: Ard Biesheuvel <ardb@kernel.org>
++L: linux-efi@vger.kernel.org
++S: Maintained
++F: drivers/firmware/efi/test/
++
++EFI VARIABLE FILESYSTEM
++M: Matthew Garrett <matthew.garrett@nebula.com>
++M: Jeremy Kerr <jk@ozlabs.org>
++M: Ard Biesheuvel <ardb@kernel.org>
++L: linux-efi@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git
++F: fs/efivarfs/
++
++EFIFB FRAMEBUFFER DRIVER
++M: Peter Jones <pjones@redhat.com>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++F: drivers/video/fbdev/efifb.c
++
++EFS FILESYSTEM
++S: Orphan
++W: http://aeschi.ch.eu.org/efs/
++F: fs/efs/
++
++EHEA (IBM pSeries eHEA 10Gb ethernet adapter) DRIVER
++M: Douglas Miller <dougmill@linux.ibm.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/ibm/ehea/
++
++EM28XX VIDEO4LINUX DRIVER
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/admin-guide/media/em28xx*
++F: drivers/media/usb/em28xx/
++
++EMBEDDED LINUX
++M: Matt Mackall <mpm@selenic.com>
++M: David Woodhouse <dwmw2@infradead.org>
++L: linux-embedded@vger.kernel.org
++S: Maintained
++
++EMMC CMDQ HOST CONTROLLER INTERFACE (CQHCI) DRIVER
++M: Adrian Hunter <adrian.hunter@intel.com>
++M: Ritesh Harjani <riteshh@codeaurora.org>
++M: Asutosh Das <asutoshd@codeaurora.org>
++L: linux-mmc@vger.kernel.org
++S: Maintained
++F: drivers/mmc/host/cqhci*
++
++EMULEX 10Gbps iSCSI - OneConnect DRIVER
++M: Subbu Seetharaman <subbu.seetharaman@broadcom.com>
++M: Ketan Mukadam <ketan.mukadam@broadcom.com>
++M: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++W: http://www.broadcom.com
++F: drivers/scsi/be2iscsi/
++
++EMULEX 10Gbps NIC BE2, BE3-R, Lancer, Skyhawk-R DRIVER (be2net)
++M: Ajit Khaparde <ajit.khaparde@broadcom.com>
++M: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
++M: Somnath Kotur <somnath.kotur@broadcom.com>
++L: netdev@vger.kernel.org
++S: Supported
++W: http://www.emulex.com
++F: drivers/net/ethernet/emulex/benet/
++
++EMULEX ONECONNECT ROCE DRIVER
++M: Selvin Xavier <selvin.xavier@broadcom.com>
++L: linux-rdma@vger.kernel.org
++S: Odd Fixes
++W: http://www.broadcom.com
++F: drivers/infiniband/hw/ocrdma/
++F: include/uapi/rdma/ocrdma-abi.h
++
++EMULEX/BROADCOM LPFC FC/FCOE SCSI DRIVER
++M: James Smart <james.smart@broadcom.com>
++M: Dick Kennedy <dick.kennedy@broadcom.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++W: http://www.broadcom.com
++F: drivers/scsi/lpfc/
++
++EMULEX/BROADCOM EFCT FC/FCOE SCSI TARGET DRIVER
++M: James Smart <james.smart@broadcom.com>
++M: Ram Vegesna <ram.vegesna@broadcom.com>
++L: linux-scsi@vger.kernel.org
++L: target-devel@vger.kernel.org
++S: Supported
++W: http://www.broadcom.com
++F: drivers/scsi/elx/
++
++ENE CB710 FLASH CARD READER DRIVER
++M: Michał Mirosław <mirq-linux@rere.qmqm.pl>
++S: Maintained
++F: drivers/misc/cb710/
++F: drivers/mmc/host/cb710-mmc.*
++F: include/linux/cb710.h
++
++ENE KB2426 (ENE0100/ENE020XX) INFRARED RECEIVER
++M: Maxim Levitsky <maximlevitsky@gmail.com>
++S: Maintained
++F: drivers/media/rc/ene_ir.*
++
++EPAPR HYPERVISOR BYTE CHANNEL DEVICE DRIVER
++M: Laurentiu Tudor <laurentiu.tudor@nxp.com>
++L: linuxppc-dev@lists.ozlabs.org
++S: Maintained
++F: drivers/tty/ehv_bytechan.c
++
++EPSON S1D13XXX FRAMEBUFFER DRIVER
++M: Kristoffer Ericson <kristoffer.ericson@gmail.com>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/kristoffer/linux-hpc.git
++F: drivers/video/fbdev/s1d13xxxfb.c
++F: include/video/s1d13xxxfb.h
++
++EROFS FILE SYSTEM
++M: Gao Xiang <xiang@kernel.org>
++M: Chao Yu <chao@kernel.org>
++L: linux-erofs@lists.ozlabs.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
++F: Documentation/filesystems/erofs.rst
++F: fs/erofs/
++F: include/trace/events/erofs.h
++
++ERRSEQ ERROR TRACKING INFRASTRUCTURE
++M: Jeff Layton <jlayton@kernel.org>
++S: Maintained
++F: include/linux/errseq.h
++F: lib/errseq.c
++
++ET131X NETWORK DRIVER
++M: Mark Einon <mark.einon@gmail.com>
++S: Odd Fixes
++F: drivers/net/ethernet/agere/
++
++ETAS ES58X CAN/USB DRIVER
++M: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
++L: linux-can@vger.kernel.org
++S: Maintained
++F: drivers/net/can/usb/etas_es58x/
++
++ETHERNET BRIDGE
++M: Roopa Prabhu <roopa@nvidia.com>
++M: Nikolay Aleksandrov <nikolay@nvidia.com>
++L: bridge@lists.linux-foundation.org (moderated for non-subscribers)
++L: netdev@vger.kernel.org
++S: Maintained
++W: http://www.linuxfoundation.org/en/Net:Bridge
++F: include/linux/netfilter_bridge/
++F: net/bridge/
++
++ETHERNET PHY LIBRARY
++M: Andrew Lunn <andrew@lunn.ch>
++M: Heiner Kallweit <hkallweit1@gmail.com>
++R: Russell King <linux@armlinux.org.uk>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-class-net-phydev
++F: Documentation/devicetree/bindings/net/ethernet-phy.yaml
++F: Documentation/devicetree/bindings/net/mdio*
++F: Documentation/devicetree/bindings/net/qca,ar803x.yaml
++F: Documentation/networking/phy.rst
++F: drivers/net/mdio/
++F: drivers/net/mdio/acpi_mdio.c
++F: drivers/net/mdio/fwnode_mdio.c
++F: drivers/net/mdio/of_mdio.c
++F: drivers/net/pcs/
++F: drivers/net/phy/
++F: drivers/of/of_net.c
++F: include/dt-bindings/net/qca-ar803x.h
++F: include/linux/*mdio*.h
++F: include/linux/mdio/*.h
++F: include/linux/of_net.h
++F: include/linux/phy.h
++F: include/linux/phy_fixed.h
++F: include/linux/platform_data/mdio-bcm-unimac.h
++F: include/linux/platform_data/mdio-gpio.h
++F: include/trace/events/mdio.h
++F: include/uapi/linux/mdio.h
++F: include/uapi/linux/mii.h
++
++EXFAT FILE SYSTEM
++M: Namjae Jeon <linkinjeon@kernel.org>
++M: Sungjong Seo <sj1557.seo@samsung.com>
++L: linux-fsdevel@vger.kernel.org
++S: Maintained
++F: fs/exfat/
++
++EXT2 FILE SYSTEM
++M: Jan Kara <jack@suse.com>
++L: linux-ext4@vger.kernel.org
++S: Maintained
++F: Documentation/filesystems/ext2.rst
++F: fs/ext2/
++F: include/linux/ext2*
++
++EXT4 FILE SYSTEM
++M: "Theodore Ts'o" <tytso@mit.edu>
++M: Andreas Dilger <adilger.kernel@dilger.ca>
++L: linux-ext4@vger.kernel.org
++S: Maintained
++W: http://ext4.wiki.kernel.org
++Q: http://patchwork.ozlabs.org/project/linux-ext4/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git
++F: Documentation/filesystems/ext4/
++F: fs/ext4/
++F: include/trace/events/ext4.h
++
++Extended Verification Module (EVM)
++M: Mimi Zohar <zohar@linux.ibm.com>
++L: linux-integrity@vger.kernel.org
++S: Supported
++F: security/integrity/evm/
++
++EXTENSIBLE FIRMWARE INTERFACE (EFI)
++M: Ard Biesheuvel <ardb@kernel.org>
++L: linux-efi@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git
++F: Documentation/admin-guide/efi-stub.rst
++F: arch/*/include/asm/efi.h
++F: arch/*/kernel/efi.c
++F: arch/arm/boot/compressed/efi-header.S
++F: arch/arm64/kernel/efi-entry.S
++F: arch/x86/platform/efi/
++F: drivers/firmware/efi/
++F: include/linux/efi*.h
++
++EXTERNAL CONNECTOR SUBSYSTEM (EXTCON)
++M: MyungJoo Ham <myungjoo.ham@samsung.com>
++M: Chanwoo Choi <cw00.choi@samsung.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon.git
++F: Documentation/devicetree/bindings/extcon/
++F: Documentation/firmware-guide/acpi/extcon-intel-int3496.rst
++F: drivers/extcon/
++F: include/linux/extcon.h
++F: include/linux/extcon/
++
++EXTRA BOOT CONFIG
++M: Masami Hiramatsu <mhiramat@kernel.org>
++S: Maintained
++F: Documentation/admin-guide/bootconfig.rst
++F: fs/proc/bootconfig.c
++F: include/linux/bootconfig.h
++F: lib/bootconfig.c
++F: tools/bootconfig/*
++F: tools/bootconfig/scripts/*
++
++EXYNOS DP DRIVER
++M: Jingoo Han <jingoohan1@gmail.com>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++F: drivers/gpu/drm/exynos/exynos_dp*
++
++EXYNOS SYSMMU (IOMMU) driver
++M: Marek Szyprowski <m.szyprowski@samsung.com>
++L: iommu@lists.linux-foundation.org
++S: Maintained
++F: drivers/iommu/exynos-iommu.c
++
++F2FS FILE SYSTEM
++M: Jaegeuk Kim <jaegeuk@kernel.org>
++M: Chao Yu <chao@kernel.org>
++L: linux-f2fs-devel@lists.sourceforge.net
++S: Maintained
++W: https://f2fs.wiki.kernel.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git
++F: Documentation/ABI/testing/sysfs-fs-f2fs
++F: Documentation/filesystems/f2fs.rst
++F: fs/f2fs/
++F: include/linux/f2fs_fs.h
++F: include/trace/events/f2fs.h
++F: include/uapi/linux/f2fs.h
++
++F71805F HARDWARE MONITORING DRIVER
++M: Jean Delvare <jdelvare@suse.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/f71805f.rst
++F: drivers/hwmon/f71805f.c
++
++FADDR2LINE
++M: Josh Poimboeuf <jpoimboe@redhat.com>
++S: Maintained
++F: scripts/faddr2line
++
++FAILOVER MODULE
++M: Sridhar Samudrala <sridhar.samudrala@intel.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: Documentation/networking/failover.rst
++F: include/net/failover.h
++F: net/core/failover.c
++
++FANOTIFY
++M: Jan Kara <jack@suse.cz>
++R: Amir Goldstein <amir73il@gmail.com>
++R: Matthew Bobrowski <repnop@google.com>
++L: linux-fsdevel@vger.kernel.org
++S: Maintained
++F: fs/notify/fanotify/
++F: include/linux/fanotify.h
++F: include/uapi/linux/fanotify.h
++
++FARSYNC SYNCHRONOUS DRIVER
++M: Kevin Curtis <kevin.curtis@farsite.co.uk>
++S: Supported
++W: http://www.farsite.co.uk/
++F: drivers/net/wan/farsync.*
++
++FAULT INJECTION SUPPORT
++M: Akinobu Mita <akinobu.mita@gmail.com>
++S: Supported
++F: Documentation/fault-injection/
++F: lib/fault-inject.c
++
++FBTFT Framebuffer drivers
++L: dri-devel@lists.freedesktop.org
++L: linux-fbdev@vger.kernel.org
++S: Orphan
++F: drivers/staging/fbtft/
++
++FC0011 TUNER DRIVER
++M: Michael Buesch <m@bues.ch>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/tuners/fc0011.c
++F: drivers/media/tuners/fc0011.h
++
++FC2580 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/tuners/fc2580*
++
++FCOE SUBSYSTEM (libfc, libfcoe, fcoe)
++M: Hannes Reinecke <hare@suse.de>
++L: linux-scsi@vger.kernel.org
++S: Supported
++W: www.Open-FCoE.org
++F: drivers/scsi/fcoe/
++F: drivers/scsi/libfc/
++F: include/scsi/fc/
++F: include/scsi/libfc.h
++F: include/scsi/libfcoe.h
++F: include/uapi/scsi/fc/
++
++FILE LOCKING (flock() and fcntl()/lockf())
++M: Jeff Layton <jlayton@kernel.org>
++M: "J. Bruce Fields" <bfields@fieldses.org>
++L: linux-fsdevel@vger.kernel.org
++S: Maintained
++F: fs/fcntl.c
++F: fs/locks.c
++F: include/linux/fcntl.h
++F: include/uapi/linux/fcntl.h
++
++FILESYSTEM DIRECT ACCESS (DAX)
++M: Dan Williams <dan.j.williams@intel.com>
++R: Matthew Wilcox <willy@infradead.org>
++R: Jan Kara <jack@suse.cz>
++L: linux-fsdevel@vger.kernel.org
++L: nvdimm@lists.linux.dev
++S: Supported
++F: fs/dax.c
++F: include/linux/dax.h
++F: include/trace/events/fs_dax.h
++
++FILESYSTEMS (VFS and infrastructure)
++M: Alexander Viro <viro@zeniv.linux.org.uk>
++L: linux-fsdevel@vger.kernel.org
++S: Maintained
++F: fs/*
++F: include/linux/fs.h
++F: include/linux/fs_types.h
++F: include/uapi/linux/fs.h
++F: include/uapi/linux/openat2.h
++X: fs/io-wq.c
++X: fs/io-wq.h
++X: fs/io_uring.c
++
++FINTEK F75375S HARDWARE MONITOR AND FAN CONTROLLER DRIVER
++M: Riku Voipio <riku.voipio@iki.fi>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: drivers/hwmon/f75375s.c
++F: include/linux/f75375s.h
++
++FIREWIRE AUDIO DRIVERS and IEC 61883-1/6 PACKET STREAMING ENGINE
++M: Clemens Ladisch <clemens@ladisch.de>
++M: Takashi Sakamoto <o-takashi@sakamocchi.jp>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
++F: include/uapi/sound/firewire.h
++F: sound/firewire/
++
++FIREWIRE MEDIA DRIVERS (firedtv)
++M: Stefan Richter <stefanr@s5r6.in-berlin.de>
++L: linux-media@vger.kernel.org
++L: linux1394-devel@lists.sourceforge.net
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media.git
++F: drivers/media/firewire/
++
++FIREWIRE SBP-2 TARGET
++M: Chris Boot <bootc@bootc.net>
++L: linux-scsi@vger.kernel.org
++L: target-devel@vger.kernel.org
++L: linux1394-devel@lists.sourceforge.net
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/nab/lio-core-2.6.git master
++F: drivers/target/sbp/
++
++FIREWIRE SUBSYSTEM
++M: Stefan Richter <stefanr@s5r6.in-berlin.de>
++L: linux1394-devel@lists.sourceforge.net
++S: Maintained
++W: http://ieee1394.wiki.kernel.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394.git
++F: drivers/firewire/
++F: include/linux/firewire.h
++F: include/uapi/linux/firewire*.h
++F: tools/firewire/
++
++FIRMWARE FRAMEWORK FOR ARMV8-A
++M: Sudeep Holla <sudeep.holla@arm.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: drivers/firmware/arm_ffa/
++F: include/linux/arm_ffa.h
++
++FIRMWARE LOADER (request_firmware)
++M: Luis Chamberlain <mcgrof@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: Documentation/firmware_class/
++F: drivers/base/firmware_loader/
++F: include/linux/firmware.h
++
++FLASH ADAPTER DRIVER (IBM Flash Adapter 900GB Full Height PCI Flash Card)
++M: Joshua Morris <josh.h.morris@us.ibm.com>
++M: Philip Kelleher <pjk1939@linux.ibm.com>
++S: Maintained
++F: drivers/block/rsxx/
++
++FLEXTIMER FTM-QUADDEC DRIVER
++M: Patrick Havelange <patrick.havelange@essensium.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/counter/ftm-quaddec.txt
++F: drivers/counter/ftm-quaddec.c
++
++FLOPPY DRIVER
++M: Denis Efremov <efremov@linux.com>
++L: linux-block@vger.kernel.org
++S: Odd Fixes
++F: drivers/block/floppy.c
++
++FLYSKY FSIA6B RC RECEIVER
++M: Markus Koch <markus@notsyncing.net>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/input/joystick/fsia6b.c
++
++FOCUSRITE SCARLETT GEN 2/3 MIXER DRIVER
++M: Geoffrey D. Bennett <g@b4.vu>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
++F: sound/usb/mixer_scarlett_gen2.c
++
++FORCEDETH GIGABIT ETHERNET DRIVER
++M: Rain River <rain.1986.08.12@gmail.com>
++M: Zhu Yanjun <zyjzyj2000@gmail.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/nvidia/*
++
++FPGA DFL DRIVERS
++M: Wu Hao <hao.wu@intel.com>
++R: Tom Rix <trix@redhat.com>
++L: linux-fpga@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-bus-dfl*
++F: Documentation/fpga/dfl.rst
++F: drivers/fpga/dfl*
++F: drivers/uio/uio_dfl.c
++F: include/linux/dfl.h
++F: include/uapi/linux/fpga-dfl.h
++
++FPGA MANAGER FRAMEWORK
++M: Moritz Fischer <mdf@kernel.org>
++M: Wu Hao <hao.wu@intel.com>
++M: Xu Yilun <yilun.xu@intel.com>
++R: Tom Rix <trix@redhat.com>
++L: linux-fpga@vger.kernel.org
++S: Maintained
++Q: http://patchwork.kernel.org/project/linux-fpga/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mdf/linux-fpga.git
++F: Documentation/devicetree/bindings/fpga/
++F: Documentation/driver-api/fpga/
++F: Documentation/fpga/
++F: drivers/fpga/
++F: include/linux/fpga/
++
++FPU EMULATOR
++M: Bill Metzenthen <billm@melbpc.org.au>
++S: Maintained
++W: http://floatingpoint.sourceforge.net/emulator/index.html
++F: arch/x86/math-emu/
++
++FRAMEBUFFER LAYER
++L: dri-devel@lists.freedesktop.org
++L: linux-fbdev@vger.kernel.org
++S: Orphan
++Q: http://patchwork.kernel.org/project/linux-fbdev/list/
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/fb/
++F: drivers/video/
++F: include/linux/fb.h
++F: include/uapi/linux/fb.h
++F: include/uapi/video/
++F: include/video/
++
++FREESCALE CAAM (Cryptographic Acceleration and Assurance Module) DRIVER
++M: Horia Geantă <horia.geanta@nxp.com>
++M: Pankaj Gupta <pankaj.gupta@nxp.com>
++L: linux-crypto@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/crypto/fsl-sec4.txt
++F: drivers/crypto/caam/
++
++FREESCALE COLDFIRE M5441X MMC DRIVER
++M: Angelo Dureghello <angelo.dureghello@timesys.com>
++L: linux-mmc@vger.kernel.org
++S: Maintained
++F: drivers/mmc/host/sdhci-esdhc-mcf.c
++F: include/linux/platform_data/mmc-esdhc-mcf.h
++
++FREESCALE DIU FRAMEBUFFER DRIVER
++M: Timur Tabi <timur@kernel.org>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++F: drivers/video/fbdev/fsl-diu-fb.*
++
++FREESCALE DMA DRIVER
++M: Li Yang <leoyang.li@nxp.com>
++M: Zhang Wei <zw@zh-kernel.org>
++L: linuxppc-dev@lists.ozlabs.org
++S: Maintained
++F: drivers/dma/fsldma.*
++
++FREESCALE DSPI DRIVER
++M: Vladimir Oltean <olteanv@gmail.com>
++L: linux-spi@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt
++F: drivers/spi/spi-fsl-dspi.c
++F: include/linux/spi/spi-fsl-dspi.h
++
++FREESCALE ENETC ETHERNET DRIVERS
++M: Claudiu Manoil <claudiu.manoil@nxp.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/freescale/enetc/
++
++FREESCALE eTSEC ETHERNET DRIVER (GIANFAR)
++M: Claudiu Manoil <claudiu.manoil@nxp.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/fsl-tsec-phy.txt
++F: drivers/net/ethernet/freescale/gianfar*
++
++FREESCALE GPMI NAND DRIVER
++M: Han Xu <han.xu@nxp.com>
++L: linux-mtd@lists.infradead.org
++S: Maintained
++F: drivers/mtd/nand/raw/gpmi-nand/*
++
++FREESCALE I2C CPM DRIVER
++M: Jochen Friedrich <jochen@scram.de>
++L: linuxppc-dev@lists.ozlabs.org
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: drivers/i2c/busses/i2c-cpm.c
++
++FREESCALE IMX / MXC FEC DRIVER
++M: Joakim Zhang <qiangqing.zhang@nxp.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/fsl,fec.yaml
++F: drivers/net/ethernet/freescale/fec.h
++F: drivers/net/ethernet/freescale/fec_main.c
++F: drivers/net/ethernet/freescale/fec_ptp.c
++
++FREESCALE IMX / MXC FRAMEBUFFER DRIVER
++M: Sascha Hauer <s.hauer@pengutronix.de>
++R: Pengutronix Kernel Team <kernel@pengutronix.de>
++L: linux-fbdev@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: drivers/video/fbdev/imxfb.c
++F: include/linux/platform_data/video-imxfb.h
++
++FREESCALE IMX DDR PMU DRIVER
++M: Frank Li <Frank.li@nxp.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/admin-guide/perf/imx-ddr.rst
++F: Documentation/devicetree/bindings/perf/fsl-imx-ddr.yaml
++F: drivers/perf/fsl_imx8_ddr_perf.c
++
++FREESCALE IMX I2C DRIVER
++M: Oleksij Rempel <o.rempel@pengutronix.de>
++R: Pengutronix Kernel Team <kernel@pengutronix.de>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/i2c/i2c-imx.yaml
++F: drivers/i2c/busses/i2c-imx.c
++
++FREESCALE IMX LPI2C DRIVER
++M: Dong Aisheng <aisheng.dong@nxp.com>
++L: linux-i2c@vger.kernel.org
++L: linux-imx@nxp.com
++S: Maintained
++F: Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml
++F: drivers/i2c/busses/i2c-imx-lpi2c.c
++
++FREESCALE MPC I2C DRIVER
++M: Chris Packham <chris.packham@alliedtelesis.co.nz>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/i2c/i2c-mpc.yaml
++F: drivers/i2c/busses/i2c-mpc.c
++
++FREESCALE QORIQ DPAA ETHERNET DRIVER
++M: Madalin Bucur <madalin.bucur@nxp.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/freescale/dpaa
++
++FREESCALE QORIQ DPAA FMAN DRIVER
++M: Madalin Bucur <madalin.bucur@nxp.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/fsl-fman.txt
++F: drivers/net/ethernet/freescale/fman
++
++FREESCALE QORIQ PTP CLOCK DRIVER
++M: Yangbo Lu <yangbo.lu@nxp.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/ptp/ptp-qoriq.txt
++F: drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp*
++F: drivers/net/ethernet/freescale/dpaa2/dprtc*
++F: drivers/net/ethernet/freescale/enetc/enetc_ptp.c
++F: drivers/ptp/ptp_qoriq.c
++F: drivers/ptp/ptp_qoriq_debugfs.c
++F: include/linux/fsl/ptp_qoriq.h
++
++FREESCALE QUAD SPI DRIVER
++M: Han Xu <han.xu@nxp.com>
++L: linux-spi@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/spi/fsl,spi-fsl-qspi.yaml
++F: drivers/spi/spi-fsl-qspi.c
++
++FREESCALE QUICC ENGINE LIBRARY
++M: Qiang Zhao <qiang.zhao@nxp.com>
++L: linuxppc-dev@lists.ozlabs.org
++S: Maintained
++F: drivers/soc/fsl/qe/
++F: include/soc/fsl/*qe*.h
++F: include/soc/fsl/*ucc*.h
++
++FREESCALE QUICC ENGINE UCC ETHERNET DRIVER
++M: Li Yang <leoyang.li@nxp.com>
++L: netdev@vger.kernel.org
++L: linuxppc-dev@lists.ozlabs.org
++S: Maintained
++F: drivers/net/ethernet/freescale/ucc_geth*
++
++FREESCALE QUICC ENGINE UCC HDLC DRIVER
++M: Zhao Qiang <qiang.zhao@nxp.com>
++L: netdev@vger.kernel.org
++L: linuxppc-dev@lists.ozlabs.org
++S: Maintained
++F: drivers/net/wan/fsl_ucc_hdlc*
++
++FREESCALE QUICC ENGINE UCC UART DRIVER
++M: Timur Tabi <timur@kernel.org>
++L: linuxppc-dev@lists.ozlabs.org
++S: Maintained
++F: drivers/tty/serial/ucc_uart.c
++
++FREESCALE SOC DRIVERS
++M: Li Yang <leoyang.li@nxp.com>
++L: linuxppc-dev@lists.ozlabs.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/misc/fsl,dpaa2-console.yaml
++F: Documentation/devicetree/bindings/soc/fsl/
++F: drivers/soc/fsl/
++F: include/linux/fsl/
++
++FREESCALE SOC FS_ENET DRIVER
++M: Pantelis Antoniou <pantelis.antoniou@gmail.com>
++L: linuxppc-dev@lists.ozlabs.org
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/freescale/fs_enet/
++F: include/linux/fs_enet_pd.h
++
++FREESCALE SOC SOUND DRIVERS
++M: Nicolin Chen <nicoleotsuka@gmail.com>
++M: Xiubo Li <Xiubo.Lee@gmail.com>
++R: Fabio Estevam <festevam@gmail.com>
++R: Shengjiu Wang <shengjiu.wang@gmail.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++L: linuxppc-dev@lists.ozlabs.org
++S: Maintained
++F: sound/soc/fsl/fsl*
++F: sound/soc/fsl/imx*
++F: sound/soc/fsl/mpc8610_hpcd.c
++
++FREESCALE USB PERIPHERAL DRIVERS
++M: Li Yang <leoyang.li@nxp.com>
++L: linux-usb@vger.kernel.org
++L: linuxppc-dev@lists.ozlabs.org
++S: Maintained
++F: drivers/usb/gadget/udc/fsl*
++
++FREESCALE USB PHY DRIVER
++M: Ran Wang <ran.wang_1@nxp.com>
++L: linux-usb@vger.kernel.org
++L: linuxppc-dev@lists.ozlabs.org
++S: Maintained
++F: drivers/usb/phy/phy-fsl-usb*
++
++FREEVXFS FILESYSTEM
++M: Christoph Hellwig <hch@infradead.org>
++S: Maintained
++W: ftp://ftp.openlinux.org/pub/people/hch/vxfs
++F: fs/freevxfs/
++
++FREEZER
++M: "Rafael J. Wysocki" <rafael@kernel.org>
++M: Pavel Machek <pavel@ucw.cz>
++L: linux-pm@vger.kernel.org
++S: Supported
++F: Documentation/power/freezing-of-tasks.rst
++F: include/linux/freezer.h
++F: kernel/freezer.c
++
++FRONTSWAP API
++M: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: include/linux/frontswap.h
++F: mm/frontswap.c
++
++FS-CACHE: LOCAL CACHING FOR NETWORK FILESYSTEMS
++M: David Howells <dhowells@redhat.com>
++L: linux-cachefs@redhat.com (moderated for non-subscribers)
++S: Supported
++F: Documentation/filesystems/caching/
++F: fs/fscache/
++F: include/linux/fscache*.h
++
++FSCRYPT: FILE SYSTEM LEVEL ENCRYPTION SUPPORT
++M: Theodore Y. Ts'o <tytso@mit.edu>
++M: Jaegeuk Kim <jaegeuk@kernel.org>
++M: Eric Biggers <ebiggers@kernel.org>
++L: linux-fscrypt@vger.kernel.org
++S: Supported
++Q: https://patchwork.kernel.org/project/linux-fscrypt/list/
++T: git git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt.git
++F: Documentation/filesystems/fscrypt.rst
++F: fs/crypto/
++F: include/linux/fscrypt*.h
++F: include/uapi/linux/fscrypt.h
++
++FSI SUBSYSTEM
++M: Jeremy Kerr <jk@ozlabs.org>
++M: Joel Stanley <joel@jms.id.au>
++R: Alistar Popple <alistair@popple.id.au>
++R: Eddie James <eajames@linux.ibm.com>
++L: linux-fsi@lists.ozlabs.org
++S: Supported
++Q: http://patchwork.ozlabs.org/project/linux-fsi/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/joel/fsi.git
++F: drivers/fsi/
++F: include/linux/fsi*.h
++F: include/trace/events/fsi*.h
++
++FSI-ATTACHED I2C DRIVER
++M: Eddie James <eajames@linux.ibm.com>
++L: linux-i2c@vger.kernel.org
++L: openbmc@lists.ozlabs.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/i2c/i2c-fsi.txt
++F: drivers/i2c/busses/i2c-fsi.c
++
++FSI-ATTACHED SPI DRIVER
++M: Eddie James <eajames@linux.ibm.com>
++L: linux-spi@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/fsi/ibm,fsi2spi.yaml
++F: drivers/spi/spi-fsi.c
++
++FSNOTIFY: FILESYSTEM NOTIFICATION INFRASTRUCTURE
++M: Jan Kara <jack@suse.cz>
++R: Amir Goldstein <amir73il@gmail.com>
++L: linux-fsdevel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs.git fsnotify
++F: fs/notify/
++F: include/linux/fsnotify*.h
++
++FSVERITY: READ-ONLY FILE-BASED AUTHENTICITY PROTECTION
++M: Eric Biggers <ebiggers@kernel.org>
++M: Theodore Y. Ts'o <tytso@mit.edu>
++L: linux-fscrypt@vger.kernel.org
++S: Supported
++Q: https://patchwork.kernel.org/project/linux-fscrypt/list/
++T: git git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt.git fsverity
++F: Documentation/filesystems/fsverity.rst
++F: fs/verity/
++F: include/linux/fsverity.h
++F: include/uapi/linux/fsverity.h
++
++FT260 FTDI USB-HID TO I2C BRIDGE DRIVER
++M: Michael Zaidman <michael.zaidman@gmail.com>
++L: linux-i2c@vger.kernel.org
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/hid/hid-ft260.c
++
++FUJITSU LAPTOP EXTRAS
++M: Jonathan Woithe <jwoithe@just42.net>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/fujitsu-laptop.c
++
++FUJITSU M-5MO LS CAMERA ISP DRIVER
++M: Kyungmin Park <kyungmin.park@samsung.com>
++M: Heungjun Kim <riverful.kim@samsung.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/i2c/m5mols/
++F: include/media/i2c/m5mols.h
++
++FUJITSU TABLET EXTRAS
++M: Robert Gerlach <khnz@gmx.de>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/fujitsu-tablet.c
++
++FUSE: FILESYSTEM IN USERSPACE
++M: Miklos Szeredi <miklos@szeredi.hu>
++L: linux-fsdevel@vger.kernel.org
++S: Maintained
++W: https://github.com/libfuse/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git
++F: Documentation/filesystems/fuse.rst
++F: fs/fuse/
++F: include/uapi/linux/fuse.h
++
++FUTEX SUBSYSTEM
++M: Thomas Gleixner <tglx@linutronix.de>
++M: Ingo Molnar <mingo@redhat.com>
++R: Peter Zijlstra <peterz@infradead.org>
++R: Darren Hart <dvhart@infradead.org>
++R: Davidlohr Bueso <dave@stgolabs.net>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/core
++F: Documentation/locking/*futex*
++F: include/asm-generic/futex.h
++F: include/linux/futex.h
++F: include/uapi/linux/futex.h
++F: kernel/futex.c
++F: tools/perf/bench/futex*
++F: tools/testing/selftests/futex/
++
++GATEWORKS SYSTEM CONTROLLER (GSC) DRIVER
++M: Tim Harvey <tharvey@gateworks.com>
++M: Robert Jones <rjones@gateworks.com>
++S: Maintained
++F: Documentation/devicetree/bindings/mfd/gateworks-gsc.yaml
++F: drivers/mfd/gateworks-gsc.c
++F: include/linux/mfd/gsc.h
++F: Documentation/hwmon/gsc-hwmon.rst
++F: drivers/hwmon/gsc-hwmon.c
++F: include/linux/platform_data/gsc_hwmon.h
++
++GCC PLUGINS
++M: Kees Cook <keescook@chromium.org>
++L: linux-hardening@vger.kernel.org
++S: Maintained
++F: Documentation/kbuild/gcc-plugins.rst
++F: scripts/Makefile.gcc-plugins
++F: scripts/gcc-plugins/
++
++GCOV BASED KERNEL PROFILING
++M: Peter Oberparleiter <oberpar@linux.ibm.com>
++S: Maintained
++F: Documentation/dev-tools/gcov.rst
++F: kernel/gcov/
++
++GDB KERNEL DEBUGGING HELPER SCRIPTS
++M: Jan Kiszka <jan.kiszka@siemens.com>
++M: Kieran Bingham <kbingham@kernel.org>
++S: Supported
++F: scripts/gdb/
++
++GEMINI CRYPTO DRIVER
++M: Corentin Labbe <clabbe@baylibre.com>
++L: linux-crypto@vger.kernel.org
++S: Maintained
++F: drivers/crypto/gemini/
++
++GEMTEK FM RADIO RECEIVER DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/radio-gemtek*
++
++GENERIC ARCHITECTURE TOPOLOGY
++M: Sudeep Holla <sudeep.holla@arm.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: drivers/base/arch_topology.c
++F: include/linux/arch_topology.h
++
++GENERIC ENTRY CODE
++M: Thomas Gleixner <tglx@linutronix.de>
++M: Peter Zijlstra <peterz@infradead.org>
++M: Andy Lutomirski <luto@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core/entry
++F: include/linux/entry-common.h
++F: include/linux/entry-kvm.h
++F: kernel/entry/
++
++GENERIC GPIO I2C DRIVER
++M: Wolfram Sang <wsa+renesas@sang-engineering.com>
++S: Supported
++F: drivers/i2c/busses/i2c-gpio.c
++F: include/linux/platform_data/i2c-gpio.h
++
++GENERIC GPIO I2C MULTIPLEXER DRIVER
++M: Peter Korsgaard <peter.korsgaard@barco.com>
++L: linux-i2c@vger.kernel.org
++S: Supported
++F: Documentation/i2c/muxes/i2c-mux-gpio.rst
++F: drivers/i2c/muxes/i2c-mux-gpio.c
++F: include/linux/platform_data/i2c-mux-gpio.h
++
++GENERIC HDLC (WAN) DRIVERS
++M: Krzysztof Halasa <khc@pm.waw.pl>
++S: Maintained
++W: http://www.kernel.org/pub/linux/utils/net/hdlc/
++F: drivers/net/wan/c101.c
++F: drivers/net/wan/hd6457*
++F: drivers/net/wan/hdlc*
++F: drivers/net/wan/n2.c
++F: drivers/net/wan/pc300too.c
++F: drivers/net/wan/pci200syn.c
++F: drivers/net/wan/wanxl*
++
++GENERIC INCLUDE/ASM HEADER FILES
++M: Arnd Bergmann <arnd@arndb.de>
++L: linux-arch@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git
++F: include/asm-generic/
++F: include/uapi/asm-generic/
++
++GENERIC PHY FRAMEWORK
++M: Kishon Vijay Abraham I <kishon@ti.com>
++M: Vinod Koul <vkoul@kernel.org>
++L: linux-phy@lists.infradead.org
++S: Supported
++Q: https://patchwork.kernel.org/project/linux-phy/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy.git
++F: Documentation/devicetree/bindings/phy/
++F: drivers/phy/
++F: include/linux/phy/
++
++GENERIC PINCTRL I2C DEMULTIPLEXER DRIVER
++M: Wolfram Sang <wsa+renesas@sang-engineering.com>
++S: Supported
++F: drivers/i2c/muxes/i2c-demux-pinctrl.c
++
++GENERIC PM DOMAINS
++M: "Rafael J. Wysocki" <rafael@kernel.org>
++M: Kevin Hilman <khilman@kernel.org>
++M: Ulf Hansson <ulf.hansson@linaro.org>
++L: linux-pm@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/power/power?domain*
++F: drivers/base/power/domain*.c
++F: include/linux/pm_domain.h
++
++GENERIC RESISTIVE TOUCHSCREEN ADC DRIVER
++M: Eugen Hristev <eugen.hristev@microchip.com>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/input/touchscreen/resistive-adc-touch.c
++
++GENERIC STRING LIBRARY
++R: Andy Shevchenko <andy@kernel.org>
++S: Maintained
++F: lib/string.c
++F: lib/string_helpers.c
++F: lib/test_string.c
++F: lib/test-string_helpers.c
++
++GENERIC UIO DRIVER FOR PCI DEVICES
++M: "Michael S. Tsirkin" <mst@redhat.com>
++L: kvm@vger.kernel.org
++S: Supported
++F: drivers/uio/uio_pci_generic.c
++
++GENERIC VDSO LIBRARY
++M: Andy Lutomirski <luto@kernel.org>
++M: Thomas Gleixner <tglx@linutronix.de>
++M: Vincenzo Frascino <vincenzo.frascino@arm.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/vdso
++F: include/asm-generic/vdso/vsyscall.h
++F: include/vdso/
++F: kernel/time/vsyscall.c
++F: lib/vdso/
++
++GENWQE (IBM Generic Workqueue Card)
++M: Frank Haverkamp <haver@linux.ibm.com>
++S: Supported
++F: drivers/misc/genwqe/
++
++GET_MAINTAINER SCRIPT
++M: Joe Perches <joe@perches.com>
++S: Maintained
++F: scripts/get_maintainer.pl
++
++GFS2 FILE SYSTEM
++M: Bob Peterson <rpeterso@redhat.com>
++M: Andreas Gruenbacher <agruenba@redhat.com>
++L: cluster-devel@redhat.com
++S: Supported
++B: https://bugzilla.kernel.org/enter_bug.cgi?product=File%20System&component=gfs2
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git
++F: Documentation/filesystems/gfs2*
++F: fs/gfs2/
++F: include/uapi/linux/gfs2_ondisk.h
++
++GIGABYTE WMI DRIVER
++M: Thomas Weißschuh <thomas@weissschuh.net>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/gigabyte-wmi.c
++
++GNSS SUBSYSTEM
++M: Johan Hovold <johan@kernel.org>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/johan/gnss.git
++F: Documentation/ABI/testing/sysfs-class-gnss
++F: Documentation/devicetree/bindings/gnss/
++F: drivers/gnss/
++F: include/linux/gnss.h
++
++GO7007 MPEG CODEC
++M: Hans Verkuil <hverkuil-cisco@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/usb/go7007/
++
++GOODIX TOUCHSCREEN
++M: Bastien Nocera <hadess@hadess.net>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/input/touchscreen/goodix.c
++
++GOOGLE ETHERNET DRIVERS
++M: Jeroen de Borst <jeroendb@google.com>
++R: Catherine Sullivan <csully@google.com>
++R: David Awogbemila <awogbemila@google.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: Documentation/networking/device_drivers/ethernet/google/gve.rst
++F: drivers/net/ethernet/google
++
++GPD POCKET FAN DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/gpd-pocket-fan.c
++
++GPIO ACPI SUPPORT
++M: Mika Westerberg <mika.westerberg@linux.intel.com>
++M: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
++L: linux-gpio@vger.kernel.org
++L: linux-acpi@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel.git
++F: Documentation/firmware-guide/acpi/gpio-properties.rst
++F: drivers/gpio/gpiolib-acpi.c
++F: drivers/gpio/gpiolib-acpi.h
++
++GPIO AGGREGATOR
++M: Geert Uytterhoeven <geert+renesas@glider.be>
++L: linux-gpio@vger.kernel.org
++S: Supported
++F: Documentation/admin-guide/gpio/gpio-aggregator.rst
++F: drivers/gpio/gpio-aggregator.c
++
++GPIO IR Transmitter
++M: Sean Young <sean@mess.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/rc/gpio-ir-tx.c
++
++GPIO MOCKUP DRIVER
++M: Bamvor Jian Zhang <bamv2005@gmail.com>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: drivers/gpio/gpio-mockup.c
++F: tools/testing/selftests/gpio/
++
++GPIO REGMAP
++R: Michael Walle <michael@walle.cc>
++S: Maintained
++F: drivers/gpio/gpio-regmap.c
++F: include/linux/gpio/regmap.h
++
++GPIO SUBSYSTEM
++M: Linus Walleij <linus.walleij@linaro.org>
++M: Bartosz Golaszewski <brgl@bgdev.pl>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git
++F: Documentation/ABI/obsolete/sysfs-gpio
++F: Documentation/ABI/testing/gpio-cdev
++F: Documentation/admin-guide/gpio/
++F: Documentation/devicetree/bindings/gpio/
++F: Documentation/driver-api/gpio/
++F: drivers/gpio/
++F: include/asm-generic/gpio.h
++F: include/linux/gpio.h
++F: include/linux/gpio/
++F: include/linux/of_gpio.h
++F: include/uapi/linux/gpio.h
++F: tools/gpio/
++
++GRE DEMULTIPLEXER DRIVER
++M: Dmitry Kozlov <xeb@mail.ru>
++L: netdev@vger.kernel.org
++S: Maintained
++F: include/net/gre.h
++F: net/ipv4/gre_demux.c
++F: net/ipv4/gre_offload.c
++
++GRETH 10/100/1G Ethernet MAC device driver
++M: Andreas Larsson <andreas@gaisler.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/aeroflex/
++
++GREYBUS AUDIO PROTOCOLS DRIVERS
++M: Vaibhav Agarwal <vaibhav.sr@gmail.com>
++M: Mark Greer <mgreer@animalcreek.com>
++S: Maintained
++F: drivers/staging/greybus/audio_apbridgea.c
++F: drivers/staging/greybus/audio_apbridgea.h
++F: drivers/staging/greybus/audio_codec.c
++F: drivers/staging/greybus/audio_codec.h
++F: drivers/staging/greybus/audio_gb.c
++F: drivers/staging/greybus/audio_manager.c
++F: drivers/staging/greybus/audio_manager.h
++F: drivers/staging/greybus/audio_manager_module.c
++F: drivers/staging/greybus/audio_manager_private.h
++F: drivers/staging/greybus/audio_manager_sysfs.c
++F: drivers/staging/greybus/audio_module.c
++F: drivers/staging/greybus/audio_topology.c
++
++GREYBUS FW/HID/SPI PROTOCOLS DRIVERS
++M: Viresh Kumar <vireshk@kernel.org>
++S: Maintained
++F: drivers/staging/greybus/authentication.c
++F: drivers/staging/greybus/bootrom.c
++F: drivers/staging/greybus/firmware.h
++F: drivers/staging/greybus/fw-core.c
++F: drivers/staging/greybus/fw-download.c
++F: drivers/staging/greybus/fw-management.c
++F: drivers/staging/greybus/greybus_authentication.h
++F: drivers/staging/greybus/greybus_firmware.h
++F: drivers/staging/greybus/hid.c
++F: drivers/staging/greybus/i2c.c
++F: drivers/staging/greybus/spi.c
++F: drivers/staging/greybus/spilib.c
++F: drivers/staging/greybus/spilib.h
++
++GREYBUS LOOPBACK DRIVER
++M: Bryan O'Donoghue <pure.logic@nexus-software.ie>
++S: Maintained
++F: drivers/staging/greybus/loopback.c
++
++GREYBUS PLATFORM DRIVERS
++M: Vaibhav Hiremath <hvaibhav.linux@gmail.com>
++S: Maintained
++F: drivers/staging/greybus/arche-apb-ctrl.c
++F: drivers/staging/greybus/arche-platform.c
++F: drivers/staging/greybus/arche_platform.h
++
++GREYBUS SDIO/GPIO/SPI PROTOCOLS DRIVERS
++M: Rui Miguel Silva <rmfrfs@gmail.com>
++S: Maintained
++F: drivers/staging/greybus/gpio.c
++F: drivers/staging/greybus/light.c
++F: drivers/staging/greybus/power_supply.c
++F: drivers/staging/greybus/sdio.c
++F: drivers/staging/greybus/spi.c
++F: drivers/staging/greybus/spilib.c
++
++GREYBUS SUBSYSTEM
++M: Johan Hovold <johan@kernel.org>
++M: Alex Elder <elder@kernel.org>
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++L: greybus-dev@lists.linaro.org (moderated for non-subscribers)
++S: Maintained
++F: drivers/greybus/
++F: drivers/staging/greybus/
++F: include/linux/greybus.h
++F: include/linux/greybus/
++
++GREYBUS UART PROTOCOLS DRIVERS
++M: David Lin <dtwlin@gmail.com>
++S: Maintained
++F: drivers/staging/greybus/log.c
++F: drivers/staging/greybus/uart.c
++
++GS1662 VIDEO SERIALIZER
++M: Charles-Antoine Couret <charles-antoine.couret@nexvision.fr>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/spi/gs1662.c
++
++GSPCA FINEPIX SUBDRIVER
++M: Frank Zago <frank@zago.net>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/usb/gspca/finepix.c
++
++GSPCA GL860 SUBDRIVER
++M: Olivier Lorin <o.lorin@laposte.net>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/usb/gspca/gl860/
++
++GSPCA M5602 SUBDRIVER
++M: Erik Andren <erik.andren@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/usb/gspca/m5602/
++
++GSPCA PAC207 SONIXB SUBDRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/usb/gspca/pac207.c
++
++GSPCA SN9C20X SUBDRIVER
++M: Brian Johnson <brijohn@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/usb/gspca/sn9c20x.c
++
++GSPCA T613 SUBDRIVER
++M: Leandro Costantino <lcostantino@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/usb/gspca/t613.c
++
++GSPCA USB WEBCAM DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/usb/gspca/
++
++GTP (GPRS Tunneling Protocol)
++M: Pablo Neira Ayuso <pablo@netfilter.org>
++M: Harald Welte <laforge@gnumonks.org>
++L: osmocom-net-gprs@lists.osmocom.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/pablo/gtp.git
++F: drivers/net/gtp.c
++
++GUID PARTITION TABLE (GPT)
++M: Davidlohr Bueso <dave@stgolabs.net>
++L: linux-efi@vger.kernel.org
++S: Maintained
++F: block/partitions/efi.*
++
++H8/300 ARCHITECTURE
++M: Yoshinori Sato <ysato@users.sourceforge.jp>
++L: uclinux-h8-devel@lists.sourceforge.jp (moderated for non-subscribers)
++S: Maintained
++W: http://uclinux-h8.sourceforge.jp
++T: git git://git.sourceforge.jp/gitroot/uclinux-h8/linux.git
++F: arch/h8300/
++F: drivers/clk/h8300/
++F: drivers/clocksource/h8300_*.c
++F: drivers/irqchip/irq-renesas-h8*.c
++
++HABANALABS PCI DRIVER
++M: Oded Gabbay <ogabbay@kernel.org>
++S: Supported
++T: git https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git
++F: Documentation/ABI/testing/debugfs-driver-habanalabs
++F: Documentation/ABI/testing/sysfs-driver-habanalabs
++F: drivers/misc/habanalabs/
++F: include/uapi/misc/habanalabs.h
++
++HACKRF MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/usb/hackrf/
++
++HANTRO VPU CODEC DRIVER
++M: Ezequiel Garcia <ezequiel@collabora.com>
++M: Philipp Zabel <p.zabel@pengutronix.de>
++L: linux-media@vger.kernel.org
++L: linux-rockchip@lists.infradead.org
++S: Maintained
++F: Documentation/devicetree/bindings/media/nxp,imx8mq-vpu.yaml
++F: Documentation/devicetree/bindings/media/rockchip-vpu.yaml
++F: drivers/staging/media/hantro/
++
++HARD DRIVE ACTIVE PROTECTION SYSTEM (HDAPS) DRIVER
++M: Frank Seidel <frank@f-seidel.de>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++W: http://www.kernel.org/pub/linux/kernel/people/fseidel/hdaps/
++F: drivers/platform/x86/hdaps.c
++
++HARDWARE MONITORING
++M: Jean Delvare <jdelvare@suse.com>
++M: Guenter Roeck <linux@roeck-us.net>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++W: http://hwmon.wiki.kernel.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git
++F: Documentation/devicetree/bindings/hwmon/
++F: Documentation/hwmon/
++F: drivers/hwmon/
++F: include/linux/hwmon*.h
++F: include/trace/events/hwmon*.h
++K: (devm_)?hwmon_device_(un)?register(|_with_groups|_with_info)
++
++HARDWARE RANDOM NUMBER GENERATOR CORE
++M: Matt Mackall <mpm@selenic.com>
++M: Herbert Xu <herbert@gondor.apana.org.au>
++L: linux-crypto@vger.kernel.org
++S: Odd fixes
++F: Documentation/admin-guide/hw_random.rst
++F: Documentation/devicetree/bindings/rng/
++F: drivers/char/hw_random/
++F: include/linux/hw_random.h
++
++HARDWARE SPINLOCK CORE
++M: Ohad Ben-Cohen <ohad@wizery.com>
++M: Bjorn Andersson <bjorn.andersson@linaro.org>
++R: Baolin Wang <baolin.wang7@gmail.com>
++L: linux-remoteproc@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc.git hwspinlock-next
++F: Documentation/devicetree/bindings/hwlock/
++F: Documentation/locking/hwspinlock.rst
++F: drivers/hwspinlock/
++F: include/linux/hwspinlock.h
++
++HARDWARE TRACING FACILITIES
++M: Alexander Shishkin <alexander.shishkin@linux.intel.com>
++S: Maintained
++F: drivers/hwtracing/
++
++HARMONY SOUND DRIVER
++L: linux-parisc@vger.kernel.org
++S: Maintained
++F: sound/parisc/harmony.*
++
++HDPVR USB VIDEO ENCODER DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/usb/hdpvr/
++
++HEWLETT PACKARD ENTERPRISE ILO CHIF DRIVER
++M: Matt Hsiao <matt.hsiao@hpe.com>
++S: Supported
++F: drivers/misc/hpilo.[ch]
++
++HEWLETT PACKARD ENTERPRISE ILO NMI WATCHDOG DRIVER
++M: Jerry Hoemann <jerry.hoemann@hpe.com>
++S: Supported
++F: Documentation/watchdog/hpwdt.rst
++F: drivers/watchdog/hpwdt.c
++
++HEWLETT-PACKARD SMART ARRAY RAID DRIVER (hpsa)
++M: Don Brace <don.brace@microchip.com>
++L: storagedev@microchip.com
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: Documentation/scsi/hpsa.rst
++F: drivers/scsi/hpsa*.[ch]
++F: include/linux/cciss*.h
++F: include/uapi/linux/cciss*.h
++
++HFI1 DRIVER
++M: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
++M: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
++L: linux-rdma@vger.kernel.org
++S: Supported
++F: drivers/infiniband/hw/hfi1
++
++HFS FILESYSTEM
++L: linux-fsdevel@vger.kernel.org
++S: Orphan
++F: Documentation/filesystems/hfs.rst
++F: fs/hfs/
++
++HFSPLUS FILESYSTEM
++L: linux-fsdevel@vger.kernel.org
++S: Orphan
++F: Documentation/filesystems/hfsplus.rst
++F: fs/hfsplus/
++
++HGA FRAMEBUFFER DRIVER
++M: Ferenc Bakonyi <fero@drama.obuda.kando.hu>
++L: linux-nvidia@lists.surfsouth.com
++S: Maintained
++W: http://drama.obuda.kando.hu/~fero/cgi-bin/hgafb.shtml
++F: drivers/video/fbdev/hgafb.c
++
++HIBERNATION (aka Software Suspend, aka swsusp)
++M: "Rafael J. Wysocki" <rafael@kernel.org>
++M: Pavel Machek <pavel@ucw.cz>
++L: linux-pm@vger.kernel.org
++S: Supported
++B: https://bugzilla.kernel.org
++F: arch/*/include/asm/suspend*.h
++F: arch/x86/power/
++F: drivers/base/power/
++F: include/linux/freezer.h
++F: include/linux/pm.h
++F: include/linux/suspend.h
++F: kernel/power/
++
++HID CORE LAYER
++M: Jiri Kosina <jikos@kernel.org>
++M: Benjamin Tissoires <benjamin.tissoires@redhat.com>
++L: linux-input@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git
++F: drivers/hid/
++F: include/linux/hid*
++F: include/uapi/linux/hid*
++
++HID PLAYSTATION DRIVER
++M: Roderick Colenbrander <roderick.colenbrander@sony.com>
++L: linux-input@vger.kernel.org
++S: Supported
++F: drivers/hid/hid-playstation.c
++
++HID SENSOR HUB DRIVERS
++M: Jiri Kosina <jikos@kernel.org>
++M: Jonathan Cameron <jic23@kernel.org>
++M: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
++L: linux-input@vger.kernel.org
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/hid/hid-sensor*
++F: drivers/hid/hid-sensor-*
++F: drivers/iio/*/hid-*
++F: include/linux/hid-sensor-*
++
++HIGH-RESOLUTION TIMERS, CLOCKEVENTS
++M: Thomas Gleixner <tglx@linutronix.de>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/core
++F: Documentation/timers/
++F: include/linux/clockchips.h
++F: include/linux/hrtimer.h
++F: kernel/time/clockevents.c
++F: kernel/time/hrtimer.c
++F: kernel/time/timer_*.c
++
++HIGH-SPEED SCC DRIVER FOR AX.25
++L: linux-hams@vger.kernel.org
++S: Orphan
++F: drivers/net/hamradio/dmascc.c
++F: drivers/net/hamradio/scc.c
++
++HIGHPOINT ROCKETRAID 3xxx RAID DRIVER
++M: HighPoint Linux Team <linux@highpoint-tech.com>
++S: Supported
++W: http://www.highpoint-tech.com
++F: Documentation/scsi/hptiop.rst
++F: drivers/scsi/hptiop.c
++
++HIPPI
++M: Jes Sorensen <jes@trained-monkey.org>
++L: linux-hippi@sunsite.dk
++S: Maintained
++F: drivers/net/hippi/
++F: include/linux/hippidevice.h
++F: include/uapi/linux/if_hippi.h
++F: net/802/hippi.c
++
++HIRSCHMANN HELLCREEK ETHERNET SWITCH DRIVER
++M: Kurt Kanzenbach <kurt@linutronix.de>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/dsa/hirschmann,hellcreek.yaml
++F: drivers/net/dsa/hirschmann/*
++F: include/linux/platform_data/hirschmann-hellcreek.h
++F: net/dsa/tag_hellcreek.c
++
++HISILICON DMA DRIVER
++M: Zhou Wang <wangzhou1@hisilicon.com>
++L: dmaengine@vger.kernel.org
++S: Maintained
++F: drivers/dma/hisi_dma.c
++
++HISILICON GPIO DRIVER
++M: Luo Jiaxing <luojiaxing@huawei.com>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: drivers/gpio/gpio-hisi.c
++
++HISILICON HIGH PERFORMANCE RSA ENGINE DRIVER (HPRE)
++M: Zaibo Xu <xuzaibo@huawei.com>
++L: linux-crypto@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/debugfs-hisi-hpre
++F: drivers/crypto/hisilicon/hpre/hpre.h
++F: drivers/crypto/hisilicon/hpre/hpre_crypto.c
++F: drivers/crypto/hisilicon/hpre/hpre_main.c
++
++HISILICON I2C CONTROLLER DRIVER
++M: Yicong Yang <yangyicong@hisilicon.com>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++W: https://www.hisilicon.com
++F: drivers/i2c/busses/i2c-hisi.c
++
++HISILICON LPC BUS DRIVER
++M: john.garry@huawei.com
++S: Maintained
++W: http://www.hisilicon.com
++F: Documentation/devicetree/bindings/arm/hisilicon/low-pin-count.yaml
++F: drivers/bus/hisi_lpc.c
++
++HISILICON NETWORK SUBSYSTEM 3 DRIVER (HNS3)
++M: Yisen Zhuang <yisen.zhuang@huawei.com>
++M: Salil Mehta <salil.mehta@huawei.com>
++L: netdev@vger.kernel.org
++S: Maintained
++W: http://www.hisilicon.com
++F: drivers/net/ethernet/hisilicon/hns3/
++
++HISILICON NETWORK SUBSYSTEM DRIVER
++M: Yisen Zhuang <yisen.zhuang@huawei.com>
++M: Salil Mehta <salil.mehta@huawei.com>
++L: netdev@vger.kernel.org
++S: Maintained
++W: http://www.hisilicon.com
++F: Documentation/devicetree/bindings/net/hisilicon*.txt
++F: drivers/net/ethernet/hisilicon/
++
++HIKEY960 ONBOARD USB GPIO HUB DRIVER
++M: John Stultz <john.stultz@linaro.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: drivers/misc/hisi_hikey_usb.c
++F: Documentation/devicetree/bindings/misc/hisilicon-hikey-usb.yaml
++
++HISILICON PMU DRIVER
++M: Shaokun Zhang <zhangshaokun@hisilicon.com>
++S: Supported
++W: http://www.hisilicon.com
++F: Documentation/admin-guide/perf/hisi-pmu.rst
++F: drivers/perf/hisilicon
++
++HISILICON QM AND ZIP Controller DRIVER
++M: Zhou Wang <wangzhou1@hisilicon.com>
++L: linux-crypto@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/debugfs-hisi-zip
++F: drivers/crypto/hisilicon/qm.c
++F: drivers/crypto/hisilicon/qm.h
++F: drivers/crypto/hisilicon/sgl.c
++F: drivers/crypto/hisilicon/zip/
++
++HISILICON ROCE DRIVER
++M: Wenpeng Liang <liangwenpeng@huawei.com>
++M: Weihang Li <liweihang@huawei.com>
++L: linux-rdma@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/infiniband/hisilicon-hns-roce.txt
++F: drivers/infiniband/hw/hns/
++
++HISILICON SAS Controller
++M: John Garry <john.garry@huawei.com>
++S: Supported
++W: http://www.hisilicon.com
++F: Documentation/devicetree/bindings/scsi/hisilicon-sas.txt
++F: drivers/scsi/hisi_sas/
++
++HISILICON SECURITY ENGINE V2 DRIVER (SEC2)
++M: Zaibo Xu <xuzaibo@huawei.com>
++L: linux-crypto@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/debugfs-hisi-sec
++F: drivers/crypto/hisilicon/sec2/sec.h
++F: drivers/crypto/hisilicon/sec2/sec_crypto.c
++F: drivers/crypto/hisilicon/sec2/sec_crypto.h
++F: drivers/crypto/hisilicon/sec2/sec_main.c
++
++HISILICON SPI Controller DRIVER FOR KUNPENG SOCS
++M: Jay Fang <f.fangjian@huawei.com>
++L: linux-spi@vger.kernel.org
++S: Maintained
++W: http://www.hisilicon.com
++F: drivers/spi/spi-hisi-kunpeng.c
++
++HISILICON SPMI CONTROLLER DRIVER FOR HIKEY 970
++M: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/spmi/hisilicon,hisi-spmi-controller.yaml
++F: drivers/spmi/hisi-spmi-controller.c
++
++HISILICON SPMI PMIC DRIVER FOR HIKEY 6421v600
++M: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/mfd/hisilicon,hi6421-spmi-pmic.yaml
++F: drivers/mfd/hi6421-spmi-pmic.c
++
++HISILICON TRUE RANDOM NUMBER GENERATOR V2 SUPPORT
++M: Zaibo Xu <xuzaibo@huawei.com>
++S: Maintained
++F: drivers/crypto/hisilicon/trng/trng.c
++
++HISILICON V3XX SPI NOR FLASH Controller Driver
++M: John Garry <john.garry@huawei.com>
++S: Maintained
++W: http://www.hisilicon.com
++F: drivers/spi/spi-hisi-sfc-v3xx.c
++
++HMM - Heterogeneous Memory Management
++M: Jérôme Glisse <jglisse@redhat.com>
++L: linux-mm@kvack.org
++S: Maintained
++F: Documentation/vm/hmm.rst
++F: include/linux/hmm*
++F: lib/test_hmm*
++F: mm/hmm*
++F: tools/testing/selftests/vm/*hmm*
++
++HOST AP DRIVER
++M: Jouni Malinen <j@w1.fi>
++L: linux-wireless@vger.kernel.org
++S: Obsolete
++W: http://w1.fi/hostap-driver.html
++F: drivers/net/wireless/intersil/hostap/
++
++HP COMPAQ TC1100 TABLET WMI EXTRAS DRIVER
++L: platform-driver-x86@vger.kernel.org
++S: Orphan
++F: drivers/platform/x86/tc1100-wmi.c
++
++HPET: High Precision Event Timers driver
++M: Clemens Ladisch <clemens@ladisch.de>
++S: Maintained
++F: Documentation/timers/hpet.rst
++F: drivers/char/hpet.c
++F: include/linux/hpet.h
++F: include/uapi/linux/hpet.h
++
++HPET: x86
++S: Orphan
++F: arch/x86/include/asm/hpet.h
++F: arch/x86/kernel/hpet.c
++
++HPFS FILESYSTEM
++M: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
++S: Maintained
++W: http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi
++F: fs/hpfs/
++
++HSI SUBSYSTEM
++M: Sebastian Reichel <sre@kernel.org>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi.git
++F: Documentation/ABI/testing/sysfs-bus-hsi
++F: Documentation/driver-api/hsi.rst
++F: drivers/hsi/
++F: include/linux/hsi/
++F: include/uapi/linux/hsi/
++
++HSO 3G MODEM DRIVER
++L: linux-usb@vger.kernel.org
++S: Orphan
++F: drivers/net/usb/hso.c
++
++HSR NETWORK PROTOCOL
++L: netdev@vger.kernel.org
++S: Orphan
++F: net/hsr/
++
++HT16K33 LED CONTROLLER DRIVER
++M: Robin van der Gracht <robin@protonic.nl>
++S: Maintained
++F: Documentation/devicetree/bindings/auxdisplay/holtek,ht16k33.yaml
++F: drivers/auxdisplay/ht16k33.c
++
++HTCPEN TOUCHSCREEN DRIVER
++M: Pau Oliva Fora <pof@eslack.org>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/input/touchscreen/htcpen.c
++
++HTS221 TEMPERATURE-HUMIDITY IIO DRIVER
++M: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++W: http://www.st.com/
++F: Documentation/devicetree/bindings/iio/humidity/st,hts221.yaml
++F: drivers/iio/humidity/hts221*
++
++HUAWEI ETHERNET DRIVER
++L: netdev@vger.kernel.org
++S: Orphan
++F: Documentation/networking/device_drivers/ethernet/huawei/hinic.rst
++F: drivers/net/ethernet/huawei/hinic/
++
++HUGETLB FILESYSTEM
++M: Mike Kravetz <mike.kravetz@oracle.com>
++L: linux-mm@kvack.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-kernel-mm-hugepages
++F: Documentation/admin-guide/mm/hugetlbpage.rst
++F: Documentation/vm/hugetlbfs_reserv.rst
++F: fs/hugetlbfs/
++F: include/linux/hugetlb.h
++F: mm/hugetlb.c
++
++HVA ST MEDIA DRIVER
++M: Jean-Christophe Trotin <jean-christophe.trotin@foss.st.com>
++L: linux-media@vger.kernel.org
++S: Supported
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/platform/sti/hva
++
++HWPOISON MEMORY FAILURE HANDLING
++M: Naoya Horiguchi <naoya.horiguchi@nec.com>
++L: linux-mm@kvack.org
++S: Maintained
++F: mm/hwpoison-inject.c
++F: mm/memory-failure.c
++
++HYCON HY46XX TOUCHSCREEN SUPPORT
++M: Giulio Benetti <giulio.benetti@benettiengineering.com>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/input/touchscreen/hycon,hy46xx.yaml
++F: drivers/input/touchscreen/hycon-hy46xx.c
++
++HYGON PROCESSOR SUPPORT
++M: Pu Wen <puwen@hygon.cn>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: arch/x86/kernel/cpu/hygon.c
++
++HYNIX HI556 SENSOR DRIVER
++M: Shawn Tu <shawnx.tu@intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/hi556.c
++
++Hyper-V/Azure CORE AND DRIVERS
++M: "K. Y. Srinivasan" <kys@microsoft.com>
++M: Haiyang Zhang <haiyangz@microsoft.com>
++M: Stephen Hemminger <sthemmin@microsoft.com>
++M: Wei Liu <wei.liu@kernel.org>
++M: Dexuan Cui <decui@microsoft.com>
++L: linux-hyperv@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git
++F: Documentation/ABI/stable/sysfs-bus-vmbus
++F: Documentation/ABI/testing/debugfs-hyperv
++F: Documentation/networking/device_drivers/ethernet/microsoft/netvsc.rst
++F: arch/arm64/hyperv
++F: arch/arm64/include/asm/hyperv-tlfs.h
++F: arch/arm64/include/asm/mshyperv.h
++F: arch/x86/hyperv
++F: arch/x86/include/asm/hyperv-tlfs.h
++F: arch/x86/include/asm/mshyperv.h
++F: arch/x86/include/asm/trace/hyperv.h
++F: arch/x86/kernel/cpu/mshyperv.c
++F: drivers/clocksource/hyperv_timer.c
++F: drivers/hid/hid-hyperv.c
++F: drivers/hv/
++F: drivers/input/serio/hyperv-keyboard.c
++F: drivers/iommu/hyperv-iommu.c
++F: drivers/net/ethernet/microsoft/
++F: drivers/net/hyperv/
++F: drivers/pci/controller/pci-hyperv-intf.c
++F: drivers/pci/controller/pci-hyperv.c
++F: drivers/scsi/storvsc_drv.c
++F: drivers/uio/uio_hv_generic.c
++F: drivers/video/fbdev/hyperv_fb.c
++F: include/asm-generic/hyperv-tlfs.h
++F: include/asm-generic/mshyperv.h
++F: include/clocksource/hyperv_timer.h
++F: include/linux/hyperv.h
++F: include/uapi/linux/hyperv.h
++F: net/vmw_vsock/hyperv_transport.c
++F: tools/hv/
++
++HYPERBUS SUPPORT
++M: Vignesh Raghavendra <vigneshr@ti.com>
++L: linux-mtd@lists.infradead.org
++S: Supported
++Q: http://patchwork.ozlabs.org/project/linux-mtd/list/
++C: irc://irc.oftc.net/mtd
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git cfi/next
++F: Documentation/devicetree/bindings/mtd/cypress,hyperflash.txt
++F: Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt
++F: drivers/mtd/hyperbus/
++F: include/linux/mtd/hyperbus.h
++
++HYPERVISOR VIRTUAL CONSOLE DRIVER
++L: linuxppc-dev@lists.ozlabs.org
++S: Odd Fixes
++F: drivers/tty/hvc/
++
++I2C ACPI SUPPORT
++M: Mika Westerberg <mika.westerberg@linux.intel.com>
++L: linux-i2c@vger.kernel.org
++L: linux-acpi@vger.kernel.org
++S: Maintained
++F: drivers/i2c/i2c-core-acpi.c
++
++I2C CONTROLLER DRIVER FOR NVIDIA GPU
++M: Ajay Gupta <ajayg@nvidia.com>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: Documentation/i2c/busses/i2c-nvidia-gpu.rst
++F: drivers/i2c/busses/i2c-nvidia-gpu.c
++
++I2C MUXES
++M: Peter Rosin <peda@axentia.se>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/i2c/i2c-arb*
++F: Documentation/devicetree/bindings/i2c/i2c-gate*
++F: Documentation/devicetree/bindings/i2c/i2c-mux*
++F: Documentation/i2c/i2c-topology.rst
++F: Documentation/i2c/muxes/
++F: drivers/i2c/i2c-mux.c
++F: drivers/i2c/muxes/
++F: include/linux/i2c-mux.h
++
++I2C MV64XXX MARVELL AND ALLWINNER DRIVER
++M: Gregory CLEMENT <gregory.clement@bootlin.com>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml
++F: drivers/i2c/busses/i2c-mv64xxx.c
++
++I2C OVER PARALLEL PORT
++M: Jean Delvare <jdelvare@suse.com>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: Documentation/i2c/busses/i2c-parport.rst
++F: drivers/i2c/busses/i2c-parport.c
++
++I2C SUBSYSTEM
++M: Wolfram Sang <wsa@kernel.org>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++W: https://i2c.wiki.kernel.org/
++Q: https://patchwork.ozlabs.org/project/linux-i2c/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git
++F: Documentation/devicetree/bindings/i2c/i2c.txt
++F: Documentation/i2c/
++F: drivers/i2c/*
++F: include/linux/i2c-dev.h
++F: include/linux/i2c-smbus.h
++F: include/linux/i2c.h
++F: include/uapi/linux/i2c-*.h
++F: include/uapi/linux/i2c.h
++
++I2C SUBSYSTEM HOST DRIVERS
++L: linux-i2c@vger.kernel.org
++S: Odd Fixes
++W: https://i2c.wiki.kernel.org/
++Q: https://patchwork.ozlabs.org/project/linux-i2c/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git
++F: Documentation/devicetree/bindings/i2c/
++F: drivers/i2c/algos/
++F: drivers/i2c/busses/
++
++I2C-TAOS-EVM DRIVER
++M: Jean Delvare <jdelvare@suse.com>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: Documentation/i2c/busses/i2c-taos-evm.rst
++F: drivers/i2c/busses/i2c-taos-evm.c
++
++I2C-TINY-USB DRIVER
++M: Till Harbaum <till@harbaum.org>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++W: http://www.harbaum.org/till/i2c_tiny_usb
++F: drivers/i2c/busses/i2c-tiny-usb.c
++
++I2C/SMBUS CONTROLLER DRIVERS FOR PC
++M: Jean Delvare <jdelvare@suse.com>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: Documentation/i2c/busses/i2c-ali1535.rst
++F: Documentation/i2c/busses/i2c-ali1563.rst
++F: Documentation/i2c/busses/i2c-ali15x3.rst
++F: Documentation/i2c/busses/i2c-amd756.rst
++F: Documentation/i2c/busses/i2c-amd8111.rst
++F: Documentation/i2c/busses/i2c-i801.rst
++F: Documentation/i2c/busses/i2c-nforce2.rst
++F: Documentation/i2c/busses/i2c-piix4.rst
++F: Documentation/i2c/busses/i2c-sis5595.rst
++F: Documentation/i2c/busses/i2c-sis630.rst
++F: Documentation/i2c/busses/i2c-sis96x.rst
++F: Documentation/i2c/busses/i2c-via.rst
++F: Documentation/i2c/busses/i2c-viapro.rst
++F: drivers/i2c/busses/i2c-ali1535.c
++F: drivers/i2c/busses/i2c-ali1563.c
++F: drivers/i2c/busses/i2c-ali15x3.c
++F: drivers/i2c/busses/i2c-amd756-s4882.c
++F: drivers/i2c/busses/i2c-amd756.c
++F: drivers/i2c/busses/i2c-amd8111.c
++F: drivers/i2c/busses/i2c-i801.c
++F: drivers/i2c/busses/i2c-isch.c
++F: drivers/i2c/busses/i2c-nforce2-s4985.c
++F: drivers/i2c/busses/i2c-nforce2.c
++F: drivers/i2c/busses/i2c-piix4.c
++F: drivers/i2c/busses/i2c-sis5595.c
++F: drivers/i2c/busses/i2c-sis630.c
++F: drivers/i2c/busses/i2c-sis96x.c
++F: drivers/i2c/busses/i2c-via.c
++F: drivers/i2c/busses/i2c-viapro.c
++
++I2C/SMBUS INTEL CHT WHISKEY COVE PMIC DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: drivers/i2c/busses/i2c-cht-wc.c
++
++I2C/SMBUS ISMT DRIVER
++M: Seth Heasley <seth.heasley@intel.com>
++M: Neil Horman <nhorman@tuxdriver.com>
++L: linux-i2c@vger.kernel.org
++F: Documentation/i2c/busses/i2c-ismt.rst
++F: drivers/i2c/busses/i2c-ismt.c
++
++I2C/SMBUS STUB DRIVER
++M: Jean Delvare <jdelvare@suse.com>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: drivers/i2c/i2c-stub.c
++
++I3C DRIVER FOR CADENCE I3C MASTER IP
++M: Przemysław Gaj <pgaj@cadence.com>
++S: Maintained
++F: Documentation/devicetree/bindings/i3c/cdns,i3c-master.txt
++F: drivers/i3c/master/i3c-master-cdns.c
++
++I3C DRIVER FOR SYNOPSYS DESIGNWARE
++M: Vitor Soares <vitor.soares@synopsys.com>
++S: Maintained
++F: Documentation/devicetree/bindings/i3c/snps,dw-i3c-master.txt
++F: drivers/i3c/master/dw*
++
++I3C SUBSYSTEM
++M: Alexandre Belloni <alexandre.belloni@bootlin.com>
++L: linux-i3c@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++C: irc://chat.freenode.net/linux-i3c
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux.git
++F: Documentation/ABI/testing/sysfs-bus-i3c
++F: Documentation/devicetree/bindings/i3c/
++F: Documentation/driver-api/i3c
++F: drivers/i3c/
++F: include/linux/i3c/
++
++IA64 (Itanium) PLATFORM
++L: linux-ia64@vger.kernel.org
++S: Orphan
++F: Documentation/ia64/
++F: arch/ia64/
++
++IBM Power 842 compression accelerator
++M: Haren Myneni <haren@us.ibm.com>
++S: Supported
++F: crypto/842.c
++F: drivers/crypto/nx/Kconfig
++F: drivers/crypto/nx/Makefile
++F: drivers/crypto/nx/nx-842*
++F: include/linux/sw842.h
++F: lib/842/
++
++IBM Power in-Nest Crypto Acceleration
++M: Breno Leitão <leitao@debian.org>
++M: Nayna Jain <nayna@linux.ibm.com>
++M: Paulo Flabiano Smorigo <pfsmorigo@gmail.com>
++L: linux-crypto@vger.kernel.org
++S: Supported
++F: drivers/crypto/nx/Kconfig
++F: drivers/crypto/nx/Makefile
++F: drivers/crypto/nx/nx-aes*
++F: drivers/crypto/nx/nx-sha*
++F: drivers/crypto/nx/nx.*
++F: drivers/crypto/nx/nx_csbcpb.h
++F: drivers/crypto/nx/nx_debugfs.c
++
++IBM Power IO DLPAR Driver for RPA-compliant PPC64 platform
++M: Tyrel Datwyler <tyreld@linux.ibm.com>
++L: linux-pci@vger.kernel.org
++L: linuxppc-dev@lists.ozlabs.org
++S: Supported
++F: drivers/pci/hotplug/rpadlpar*
++
++IBM Power Linux RAID adapter
++M: Brian King <brking@us.ibm.com>
++S: Supported
++F: drivers/scsi/ipr.*
++
++IBM Power PCI Hotplug Driver for RPA-compliant PPC64 platform
++M: Tyrel Datwyler <tyreld@linux.ibm.com>
++L: linux-pci@vger.kernel.org
++L: linuxppc-dev@lists.ozlabs.org
++S: Supported
++F: drivers/pci/hotplug/rpaphp*
++
++IBM Power SRIOV Virtual NIC Device Driver
++M: Dany Madden <drt@linux.ibm.com>
++M: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
++R: Thomas Falcon <tlfalcon@linux.ibm.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/ibm/ibmvnic.*
++
++IBM Power Virtual Accelerator Switchboard
++M: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
++L: linuxppc-dev@lists.ozlabs.org
++S: Supported
++F: arch/powerpc/include/asm/vas.h
++F: arch/powerpc/platforms/powernv/copy-paste.h
++F: arch/powerpc/platforms/powernv/vas*
++
++IBM Power Virtual Ethernet Device Driver
++M: Cristobal Forno <cforno12@linux.ibm.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/ibm/ibmveth.*
++
++IBM Power Virtual FC Device Drivers
++M: Tyrel Datwyler <tyreld@linux.ibm.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: drivers/scsi/ibmvscsi/ibmvfc*
++
++IBM Power Virtual Management Channel Driver
++M: Brad Warrum <bwarrum@linux.ibm.com>
++M: Ritu Agarwal <rituagar@linux.ibm.com>
++S: Supported
++F: drivers/misc/ibmvmc.*
++
++IBM Power Virtual SCSI Device Drivers
++M: Tyrel Datwyler <tyreld@linux.ibm.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: drivers/scsi/ibmvscsi/ibmvscsi*
++F: include/scsi/viosrp.h
++
++IBM Power Virtual SCSI Device Target Driver
++M: Michael Cyr <mikecyr@linux.ibm.com>
++L: linux-scsi@vger.kernel.org
++L: target-devel@vger.kernel.org
++S: Supported
++F: drivers/scsi/ibmvscsi_tgt/
++
++IBM Power VMX Cryptographic instructions
++M: Breno Leitão <leitao@debian.org>
++M: Nayna Jain <nayna@linux.ibm.com>
++M: Paulo Flabiano Smorigo <pfsmorigo@gmail.com>
++L: linux-crypto@vger.kernel.org
++S: Supported
++F: drivers/crypto/vmx/Kconfig
++F: drivers/crypto/vmx/Makefile
++F: drivers/crypto/vmx/aes*
++F: drivers/crypto/vmx/ghash*
++F: drivers/crypto/vmx/ppc-xlate.pl
++F: drivers/crypto/vmx/vmx.c
++
++IBM ServeRAID RAID DRIVER
++S: Orphan
++F: drivers/scsi/ips.*
++
++ICH LPC AND GPIO DRIVER
++M: Peter Tyser <ptyser@xes-inc.com>
++S: Maintained
++F: drivers/gpio/gpio-ich.c
++F: drivers/mfd/lpc_ich.c
++
++ICY I2C DRIVER
++M: Max Staudt <max@enpas.org>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: drivers/i2c/busses/i2c-icy.c
++
++IDEAPAD LAPTOP EXTRAS DRIVER
++M: Ike Panhc <ike.pan@canonical.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++W: http://launchpad.net/ideapad-laptop
++F: drivers/platform/x86/ideapad-laptop.c
++
++IDEAPAD LAPTOP SLIDEBAR DRIVER
++M: Andrey Moiseev <o2g.org.ru@gmail.com>
++L: linux-input@vger.kernel.org
++S: Maintained
++W: https://github.com/o2genum/ideapad-slidebar
++F: drivers/input/misc/ideapad_slidebar.c
++
++IDT VersaClock 5 CLOCK DRIVER
++M: Luca Ceresoli <luca@lucaceresoli.net>
++S: Maintained
++F: Documentation/devicetree/bindings/clock/idt,versaclock5.yaml
++F: drivers/clk/clk-versaclock5.c
++
++IEEE 802.15.4 SUBSYSTEM
++M: Alexander Aring <alex.aring@gmail.com>
++M: Stefan Schmidt <stefan@datenfreihafen.org>
++L: linux-wpan@vger.kernel.org
++S: Maintained
++W: https://linux-wpan.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan-next.git
++F: Documentation/networking/ieee802154.rst
++F: drivers/net/ieee802154/
++F: include/linux/ieee802154.h
++F: include/linux/nl802154.h
++F: include/net/af_ieee802154.h
++F: include/net/cfg802154.h
++F: include/net/ieee802154_netdev.h
++F: include/net/mac802154.h
++F: include/net/nl802154.h
++F: net/ieee802154/
++F: net/mac802154/
++
++IFE PROTOCOL
++M: Yotam Gigi <yotam.gi@gmail.com>
++M: Jamal Hadi Salim <jhs@mojatatu.com>
++F: include/net/ife.h
++F: include/uapi/linux/ife.h
++F: net/ife
++
++IGORPLUG-USB IR RECEIVER
++M: Sean Young <sean@mess.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/rc/igorplugusb.c
++
++IGUANAWORKS USB IR TRANSCEIVER
++M: Sean Young <sean@mess.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/rc/iguanair.c
++
++IIO DIGITAL POTENTIOMETER DAC
++M: Peter Rosin <peda@axentia.se>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-bus-iio-dac-dpot-dac
++F: Documentation/devicetree/bindings/iio/dac/dpot-dac.yaml
++F: drivers/iio/dac/dpot-dac.c
++
++IIO ENVELOPE DETECTOR
++M: Peter Rosin <peda@axentia.se>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-bus-iio-adc-envelope-detector
++F: Documentation/devicetree/bindings/iio/adc/envelope-detector.yaml
++F: drivers/iio/adc/envelope-detector.c
++
++IIO MULTIPLEXER
++M: Peter Rosin <peda@axentia.se>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/iio/multiplexer/io-channel-mux.yaml
++F: drivers/iio/multiplexer/iio-mux.c
++
++IIO SCMI BASED DRIVER
++M: Jyoti Bhayana <jbhayana@google.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: drivers/iio/common/scmi_sensors/scmi_iio.c
++
++IIO SUBSYSTEM AND DRIVERS
++M: Jonathan Cameron <jic23@kernel.org>
++R: Lars-Peter Clausen <lars@metafoo.de>
++L: linux-iio@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git
++F: Documentation/ABI/testing/configfs-iio*
++F: Documentation/ABI/testing/sysfs-bus-iio*
++F: Documentation/devicetree/bindings/iio/
++F: drivers/iio/
++F: drivers/staging/iio/
++F: include/linux/iio/
++F: tools/iio/
++
++IIO UNIT CONVERTER
++M: Peter Rosin <peda@axentia.se>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/iio/afe/current-sense-amplifier.yaml
++F: Documentation/devicetree/bindings/iio/afe/current-sense-shunt.yaml
++F: Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml
++F: drivers/iio/afe/iio-rescale.c
++
++IKANOS/ADI EAGLE ADSL USB DRIVER
++M: Matthieu Castet <castet.matthieu@free.fr>
++M: Stanislaw Gruszka <stf_xl@wp.pl>
++S: Maintained
++F: drivers/usb/atm/ueagle-atm.c
++
++IMGTEC ASCII LCD DRIVER
++M: Paul Burton <paulburton@kernel.org>
++S: Maintained
++F: Documentation/devicetree/bindings/auxdisplay/img,ascii-lcd.yaml
++F: drivers/auxdisplay/img-ascii-lcd.c
++
++IMGTEC IR DECODER DRIVER
++S: Orphan
++F: drivers/media/rc/img-ir/
++
++IMON SOUNDGRAPH USB IR RECEIVER
++M: Sean Young <sean@mess.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/rc/imon.c
++F: drivers/media/rc/imon_raw.c
++
++IMS TWINTURBO FRAMEBUFFER DRIVER
++L: linux-fbdev@vger.kernel.org
++S: Orphan
++F: drivers/video/fbdev/imsttfb.c
++
++INA209 HARDWARE MONITOR DRIVER
++M: Guenter Roeck <linux@roeck-us.net>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml
++F: Documentation/hwmon/ina209.rst
++F: drivers/hwmon/ina209.c
++
++INA2XX HARDWARE MONITOR DRIVER
++M: Guenter Roeck <linux@roeck-us.net>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/ina2xx.rst
++F: drivers/hwmon/ina2xx.c
++F: include/linux/platform_data/ina2xx.h
++
++INDUSTRY PACK SUBSYSTEM (IPACK)
++M: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
++M: Jens Taprogge <jens.taprogge@taprogge.org>
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++L: industrypack-devel@lists.sourceforge.net
++S: Maintained
++W: http://industrypack.sourceforge.net
++F: drivers/ipack/
++
++INFINEON DPS310 Driver
++M: Eddie James <eajames@linux.ibm.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: drivers/iio/pressure/dps310.c
++
++INFINIBAND SUBSYSTEM
++M: Doug Ledford <dledford@redhat.com>
++M: Jason Gunthorpe <jgg@nvidia.com>
++L: linux-rdma@vger.kernel.org
++S: Supported
++W: https://github.com/linux-rdma/rdma-core
++Q: http://patchwork.kernel.org/project/linux-rdma/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git
++F: Documentation/devicetree/bindings/infiniband/
++F: Documentation/infiniband/
++F: drivers/infiniband/
++F: include/rdma/
++F: include/trace/events/ib_mad.h
++F: include/trace/events/ib_umad.h
++F: include/uapi/linux/if_infiniband.h
++F: include/uapi/rdma/
++F: samples/bpf/ibumad_kern.c
++F: samples/bpf/ibumad_user.c
++
++INGENIC JZ4780 NAND DRIVER
++M: Harvey Hunt <harveyhuntnexus@gmail.com>
++L: linux-mtd@lists.infradead.org
++L: linux-mips@vger.kernel.org
++S: Maintained
++F: drivers/mtd/nand/raw/ingenic/
++
++INGENIC JZ47xx SoCs
++M: Paul Cercueil <paul@crapouillou.net>
++L: linux-mips@vger.kernel.org
++S: Maintained
++F: arch/mips/boot/dts/ingenic/
++F: arch/mips/generic/board-ingenic.c
++F: arch/mips/include/asm/mach-ingenic/
++F: arch/mips/ingenic/Kconfig
++F: drivers/clk/ingenic/
++F: drivers/dma/dma-jz4780.c
++F: drivers/gpu/drm/ingenic/
++F: drivers/i2c/busses/i2c-jz4780.c
++F: drivers/iio/adc/ingenic-adc.c
++F: drivers/irqchip/irq-ingenic.c
++F: drivers/memory/jz4780-nemc.c
++F: drivers/mmc/host/jz4740_mmc.c
++F: drivers/mtd/nand/raw/ingenic/
++F: drivers/pinctrl/pinctrl-ingenic.c
++F: drivers/power/supply/ingenic-battery.c
++F: drivers/pwm/pwm-jz4740.c
++F: drivers/remoteproc/ingenic_rproc.c
++F: drivers/rtc/rtc-jz4740.c
++F: drivers/tty/serial/8250/8250_ingenic.c
++F: drivers/usb/musb/jz4740.c
++F: drivers/watchdog/jz4740_wdt.c
++F: include/dt-bindings/iio/adc/ingenic,adc.h
++F: include/linux/mfd/ingenic-tcu.h
++F: sound/soc/codecs/jz47*
++F: sound/soc/jz4740/
++
++INOTIFY
++M: Jan Kara <jack@suse.cz>
++R: Amir Goldstein <amir73il@gmail.com>
++L: linux-fsdevel@vger.kernel.org
++S: Maintained
++F: Documentation/filesystems/inotify.rst
++F: fs/notify/inotify/
++F: include/linux/inotify.h
++F: include/uapi/linux/inotify.h
++
++INPUT (KEYBOARD, MOUSE, JOYSTICK, TOUCHSCREEN) DRIVERS
++M: Dmitry Torokhov <dmitry.torokhov@gmail.com>
++L: linux-input@vger.kernel.org
++S: Maintained
++Q: http://patchwork.kernel.org/project/linux-input/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git
++F: Documentation/devicetree/bindings/input/
++F: Documentation/devicetree/bindings/serio/
++F: Documentation/input/
++F: drivers/input/
++F: include/linux/input.h
++F: include/linux/input/
++F: include/uapi/linux/input-event-codes.h
++F: include/uapi/linux/input.h
++
++INPUT MULTITOUCH (MT) PROTOCOL
++M: Henrik Rydberg <rydberg@bitmath.org>
++L: linux-input@vger.kernel.org
++S: Odd fixes
++F: Documentation/input/multi-touch-protocol.rst
++F: drivers/input/input-mt.c
++K: \b(ABS|SYN)_MT_
++
++INSIDE SECURE CRYPTO DRIVER
++M: Antoine Tenart <atenart@kernel.org>
++L: linux-crypto@vger.kernel.org
++S: Maintained
++F: drivers/crypto/inside-secure/
++
++INTEGRITY MEASUREMENT ARCHITECTURE (IMA)
++M: Mimi Zohar <zohar@linux.ibm.com>
++M: Dmitry Kasatkin <dmitry.kasatkin@gmail.com>
++L: linux-integrity@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity.git
++F: security/integrity/ima/
++
++INTEL 810/815 FRAMEBUFFER DRIVER
++M: Antonino Daplas <adaplas@gmail.com>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++F: drivers/video/fbdev/i810/
++
++INTEL ASoC DRIVERS
++M: Cezary Rojewski <cezary.rojewski@intel.com>
++M: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
++M: Liam Girdwood <liam.r.girdwood@linux.intel.com>
++M: Jie Yang <yang.jie@linux.intel.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Supported
++F: sound/soc/intel/
++
++INTEL ATOMISP2 DUMMY / POWER-MANAGEMENT DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/intel/atomisp2/pm.c
++
++INTEL ATOMISP2 LED DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/intel/atomisp2/led.c
++
++INTEL BIOS SAR INT1092 DRIVER
++M: Shravan Sudhakar <s.shravan@intel.com>
++M: Intel Corporation <linuxwwan@intel.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/intel/int1092/
++
++INTEL BROXTON PMC DRIVER
++M: Mika Westerberg <mika.westerberg@linux.intel.com>
++M: Zha Qipeng <qipeng.zha@intel.com>
++S: Maintained
++F: drivers/mfd/intel_pmc_bxt.c
++F: include/linux/mfd/intel_pmc_bxt.h
++
++INTEL C600 SERIES SAS CONTROLLER DRIVER
++M: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++T: git git://git.code.sf.net/p/intel-sas/isci
++F: drivers/scsi/isci/
++
++INTEL CPU family model numbers
++M: Tony Luck <tony.luck@intel.com>
++M: x86@kernel.org
++L: linux-kernel@vger.kernel.org
++S: Supported
++F: arch/x86/include/asm/intel-family.h
++
++INTEL DRM DRIVERS (excluding Poulsbo, Moorestown and derivative chipsets)
++M: Jani Nikula <jani.nikula@linux.intel.com>
++M: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
++M: Rodrigo Vivi <rodrigo.vivi@intel.com>
++L: intel-gfx@lists.freedesktop.org
++S: Supported
++W: https://01.org/linuxgraphics/
++Q: http://patchwork.freedesktop.org/project/intel-gfx/
++B: https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs
++C: irc://irc.oftc.net/intel-gfx
++T: git git://anongit.freedesktop.org/drm-intel
++F: Documentation/gpu/i915.rst
++F: drivers/gpu/drm/i915/
++F: include/drm/i915*
++F: include/uapi/drm/i915_drm.h
++
++INTEL ETHERNET DRIVERS
++M: Jesse Brandeburg <jesse.brandeburg@intel.com>
++M: Tony Nguyen <anthony.l.nguyen@intel.com>
++L: intel-wired-lan@lists.osuosl.org (moderated for non-subscribers)
++S: Supported
++W: http://www.intel.com/support/feedback.htm
++W: http://e1000.sourceforge.net/
++Q: http://patchwork.ozlabs.org/project/intel-wired-lan/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue.git
++F: Documentation/networking/device_drivers/ethernet/intel/
++F: drivers/net/ethernet/intel/
++F: drivers/net/ethernet/intel/*/
++F: include/linux/avf/virtchnl.h
++F: include/linux/net/intel/iidc.h
++
++INTEL ETHERNET PROTOCOL DRIVER FOR RDMA
++M: Mustafa Ismail <mustafa.ismail@intel.com>
++M: Shiraz Saleem <shiraz.saleem@intel.com>
++L: linux-rdma@vger.kernel.org
++S: Supported
++F: drivers/infiniband/hw/irdma/
++F: include/uapi/rdma/irdma-abi.h
++
++INTEL FRAMEBUFFER DRIVER (excluding 810 and 815)
++M: Maik Broemme <mbroemme@libmpq.org>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++F: Documentation/fb/intelfb.rst
++F: drivers/video/fbdev/intelfb/
++
++INTEL GPIO DRIVERS
++M: Andy Shevchenko <andy@kernel.org>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel.git
++F: drivers/gpio/gpio-ich.c
++F: drivers/gpio/gpio-merrifield.c
++F: drivers/gpio/gpio-ml-ioh.c
++F: drivers/gpio/gpio-pch.c
++F: drivers/gpio/gpio-sch.c
++F: drivers/gpio/gpio-sodaville.c
++
++INTEL GVT-g DRIVERS (Intel GPU Virtualization)
++M: Zhenyu Wang <zhenyuw@linux.intel.com>
++M: Zhi Wang <zhi.a.wang@intel.com>
++L: intel-gvt-dev@lists.freedesktop.org
++L: intel-gfx@lists.freedesktop.org
++S: Supported
++W: https://01.org/igvt-g
++T: git https://github.com/intel/gvt-linux.git
++F: drivers/gpu/drm/i915/gvt/
++
++INTEL HID EVENT DRIVER
++M: Alex Hung <alex.hung@canonical.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/intel/hid.c
++
++INTEL I/OAT DMA DRIVER
++M: Dave Jiang <dave.jiang@intel.com>
++R: Dan Williams <dan.j.williams@intel.com>
++L: dmaengine@vger.kernel.org
++S: Supported
++Q: https://patchwork.kernel.org/project/linux-dmaengine/list/
++F: drivers/dma/ioat*
++
++INTEL IADX DRIVER
++M: Dave Jiang <dave.jiang@intel.com>
++L: dmaengine@vger.kernel.org
++S: Supported
++F: drivers/dma/idxd/*
++F: include/uapi/linux/idxd.h
++
++INTEL IDLE DRIVER
++M: Jacob Pan <jacob.jun.pan@linux.intel.com>
++M: Len Brown <lenb@kernel.org>
++L: linux-pm@vger.kernel.org
++S: Supported
++B: https://bugzilla.kernel.org
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux.git
++F: drivers/idle/intel_idle.c
++
++INTEL INTEGRATED SENSOR HUB DRIVER
++M: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
++M: Jiri Kosina <jikos@kernel.org>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/hid/intel-ish-hid/
++
++INTEL IOMMU (VT-d)
++M: David Woodhouse <dwmw2@infradead.org>
++M: Lu Baolu <baolu.lu@linux.intel.com>
++L: iommu@lists.linux-foundation.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git
++F: drivers/iommu/intel/
++F: include/linux/intel-iommu.h
++F: include/linux/intel-svm.h
++
++INTEL IOP-ADMA DMA DRIVER
++R: Dan Williams <dan.j.williams@intel.com>
++S: Odd fixes
++F: drivers/dma/iop-adma.c
++
++INTEL IPU3 CSI-2 CIO2 DRIVER
++M: Yong Zhi <yong.zhi@intel.com>
++M: Sakari Ailus <sakari.ailus@linux.intel.com>
++M: Bingbu Cao <bingbu.cao@intel.com>
++M: Dan Scally <djrscally@gmail.com>
++R: Tianshu Qiu <tian.shu.qiu@intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/userspace-api/media/v4l/pixfmt-srggb10-ipu3.rst
++F: drivers/media/pci/intel/ipu3/
++
++INTEL IPU3 CSI-2 IMGU DRIVER
++M: Sakari Ailus <sakari.ailus@linux.intel.com>
++R: Bingbu Cao <bingbu.cao@intel.com>
++R: Tianshu Qiu <tian.shu.qiu@intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: Documentation/admin-guide/media/ipu3.rst
++F: Documentation/admin-guide/media/ipu3_rcb.svg
++F: Documentation/userspace-api/media/v4l/pixfmt-meta-intel-ipu3.rst
++F: drivers/staging/media/ipu3/
++
++INTEL IXP4XX CRYPTO SUPPORT
++M: Corentin Labbe <clabbe@baylibre.com>
++L: linux-crypto@vger.kernel.org
++S: Maintained
++F: drivers/crypto/ixp4xx_crypto.c
++
++INTEL IXP4XX QMGR, NPE, ETHERNET and HSS SUPPORT
++M: Krzysztof Halasa <khalasa@piap.pl>
++S: Maintained
++F: drivers/net/ethernet/xscale/ixp4xx_eth.c
++F: drivers/net/wan/ixp4xx_hss.c
++F: drivers/soc/ixp4xx/ixp4xx-npe.c
++F: drivers/soc/ixp4xx/ixp4xx-qmgr.c
++F: include/linux/soc/ixp4xx/npe.h
++F: include/linux/soc/ixp4xx/qmgr.h
++
++INTEL IXP4XX RANDOM NUMBER GENERATOR SUPPORT
++M: Deepak Saxena <dsaxena@plexity.net>
++S: Maintained
++F: Documentation/devicetree/bindings/display/intel,ixp46x-rng.yaml
++F: drivers/char/hw_random/ixp4xx-rng.c
++
++INTEL KEEM BAY DRM DRIVER
++M: Anitha Chrisanthus <anitha.chrisanthus@intel.com>
++M: Edmund Dea <edmund.j.dea@intel.com>
++S: Maintained
++F: Documentation/devicetree/bindings/display/intel,kmb_display.yaml
++F: drivers/gpu/drm/kmb/
++
++INTEL KEEM BAY OCS AES/SM4 CRYPTO DRIVER
++M: Daniele Alessandrelli <daniele.alessandrelli@intel.com>
++S: Maintained
++F: Documentation/devicetree/bindings/crypto/intel,keembay-ocs-aes.yaml
++F: drivers/crypto/keembay/Kconfig
++F: drivers/crypto/keembay/Makefile
++F: drivers/crypto/keembay/keembay-ocs-aes-core.c
++F: drivers/crypto/keembay/ocs-aes.c
++F: drivers/crypto/keembay/ocs-aes.h
++
++INTEL KEEM BAY OCS HCU CRYPTO DRIVER
++M: Daniele Alessandrelli <daniele.alessandrelli@intel.com>
++M: Declan Murphy <declan.murphy@intel.com>
++S: Maintained
++F: Documentation/devicetree/bindings/crypto/intel,keembay-ocs-hcu.yaml
++F: drivers/crypto/keembay/Kconfig
++F: drivers/crypto/keembay/Makefile
++F: drivers/crypto/keembay/keembay-ocs-hcu-core.c
++F: drivers/crypto/keembay/ocs-hcu.c
++F: drivers/crypto/keembay/ocs-hcu.h
++
++INTEL MANAGEMENT ENGINE (mei)
++M: Tomas Winkler <tomas.winkler@intel.com>
++L: linux-kernel@vger.kernel.org
++S: Supported
++F: Documentation/driver-api/mei/*
++F: drivers/misc/mei/
++F: drivers/watchdog/mei_wdt.c
++F: include/linux/mei_cl_bus.h
++F: include/uapi/linux/mei.h
++F: samples/mei/*
++
++INTEL MAX 10 BMC MFD DRIVER
++M: Xu Yilun <yilun.xu@intel.com>
++R: Tom Rix <trix@redhat.com>
++S: Maintained
++F: Documentation/ABI/testing/sysfs-driver-intel-m10-bmc
++F: Documentation/hwmon/intel-m10-bmc-hwmon.rst
++F: drivers/hwmon/intel-m10-bmc-hwmon.c
++F: drivers/mfd/intel-m10-bmc.c
++F: include/linux/mfd/intel-m10-bmc.h
++
++INTEL MENLOW THERMAL DRIVER
++M: Sujith Thomas <sujith.thomas@intel.com>
++L: linux-pm@vger.kernel.org
++S: Supported
++W: https://01.org/linux-acpi
++F: drivers/thermal/intel/intel_menlow.c
++
++INTEL P-Unit IPC DRIVER
++M: Zha Qipeng <qipeng.zha@intel.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: arch/x86/include/asm/intel_punit_ipc.h
++F: drivers/platform/x86/intel/punit_ipc.c
++
++INTEL PMC CORE DRIVER
++M: Rajneesh Bhardwaj <irenic.rajneesh@gmail.com>
++M: David E Box <david.e.box@intel.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-platform-intel-pmc
++F: drivers/platform/x86/intel/pmc/
++
++INTEL PMIC GPIO DRIVERS
++M: Andy Shevchenko <andy@kernel.org>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel.git
++F: drivers/gpio/gpio-*cove.c
++
++INTEL PMIC MULTIFUNCTION DEVICE DRIVERS
++M: Andy Shevchenko <andy@kernel.org>
++S: Maintained
++F: drivers/mfd/intel_soc_pmic*
++F: include/linux/mfd/intel_soc_pmic*
++
++INTEL PMT DRIVER
++M: "David E. Box" <david.e.box@linux.intel.com>
++S: Maintained
++F: drivers/mfd/intel_pmt.c
++F: drivers/platform/x86/intel/pmt/
++
++INTEL PRO/WIRELESS 2100, 2200BG, 2915ABG NETWORK CONNECTION SUPPORT
++M: Stanislav Yakovlev <stas.yakovlev@gmail.com>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++F: Documentation/networking/device_drivers/wifi/intel/ipw2100.rst
++F: Documentation/networking/device_drivers/wifi/intel/ipw2200.rst
++F: drivers/net/wireless/intel/ipw2x00/
++
++INTEL PSTATE DRIVER
++M: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
++M: Len Brown <lenb@kernel.org>
++L: linux-pm@vger.kernel.org
++S: Supported
++F: drivers/cpufreq/intel_pstate.c
++
++INTEL QUADRATURE ENCODER PERIPHERAL DRIVER
++M: Jarkko Nikula <jarkko.nikula@linux.intel.com>
++L: linux-iio@vger.kernel.org
++F: drivers/counter/intel-qep.c
++
++INTEL SCU DRIVERS
++M: Mika Westerberg <mika.westerberg@linux.intel.com>
++S: Maintained
++F: arch/x86/include/asm/intel_scu_ipc.h
++F: drivers/platform/x86/intel_scu_*
++
++INTEL SKYLAKE INT3472 ACPI DEVICE DRIVER
++M: Daniel Scally <djrscally@gmail.com>
++S: Maintained
++F: drivers/platform/x86/intel/int3472/
++
++INTEL SPEED SELECT TECHNOLOGY
++M: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/intel/speed_select_if/
++F: include/uapi/linux/isst_if.h
++F: tools/power/x86/intel-speed-select/
++
++INTEL STRATIX10 FIRMWARE DRIVERS
++M: Dinh Nguyen <dinguyen@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-devices-platform-stratix10-rsu
++F: Documentation/devicetree/bindings/firmware/intel,stratix10-svc.txt
++F: drivers/firmware/stratix10-rsu.c
++F: drivers/firmware/stratix10-svc.c
++F: include/linux/firmware/intel/stratix10-smc.h
++F: include/linux/firmware/intel/stratix10-svc-client.h
++
++INTEL TELEMETRY DRIVER
++M: Rajneesh Bhardwaj <irenic.rajneesh@gmail.com>
++M: "David E. Box" <david.e.box@linux.intel.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: arch/x86/include/asm/intel_telemetry.h
++F: drivers/platform/x86/intel/telemetry/
++
++INTEL UNCORE FREQUENCY CONTROL
++M: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/intel/uncore-frequency.c
++
++INTEL VIRTUAL BUTTON DRIVER
++M: AceLan Kao <acelan.kao@canonical.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/intel/vbtn.c
++
++INTEL WIRELESS 3945ABG/BG, 4965AGN (iwlegacy)
++M: Stanislaw Gruszka <stf_xl@wp.pl>
++L: linux-wireless@vger.kernel.org
++S: Supported
++F: drivers/net/wireless/intel/iwlegacy/
++
++INTEL WIRELESS WIFI LINK (iwlwifi)
++M: Luca Coelho <luciano.coelho@intel.com>
++L: linux-wireless@vger.kernel.org
++S: Supported
++W: https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi.git
++F: drivers/net/wireless/intel/iwlwifi/
++
++INTEL WMI SLIM BOOTLOADER (SBL) FIRMWARE UPDATE DRIVER
++M: Jithu Joseph <jithu.joseph@intel.com>
++R: Maurice Ma <maurice.ma@intel.com>
++S: Maintained
++W: https://slimbootloader.github.io/security/firmware-update.html
++F: drivers/platform/x86/intel/wmi/sbl-fw-update.c
++
++INTEL WMI THUNDERBOLT FORCE POWER DRIVER
++L: Dell.Client.Kernel@dell.com
++S: Maintained
++F: drivers/platform/x86/intel/wmi/thunderbolt.c
++
++INTEL WWAN IOSM DRIVER
++M: M Chetan Kumar <m.chetan.kumar@intel.com>
++M: Intel Corporation <linuxwwan@intel.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/wwan/iosm/
++
++INTEL(R) TRACE HUB
++M: Alexander Shishkin <alexander.shishkin@linux.intel.com>
++S: Supported
++F: Documentation/trace/intel_th.rst
++F: drivers/hwtracing/intel_th/
++F: include/linux/intel_th.h
++
++INTEL(R) TRUSTED EXECUTION TECHNOLOGY (TXT)
++M: Ning Sun <ning.sun@intel.com>
++L: tboot-devel@lists.sourceforge.net
++S: Supported
++W: http://tboot.sourceforge.net
++T: hg http://tboot.hg.sourceforge.net:8000/hgroot/tboot/tboot
++F: Documentation/x86/intel_txt.rst
++F: arch/x86/kernel/tboot.c
++F: include/linux/tboot.h
++
++INTEL SGX
++M: Jarkko Sakkinen <jarkko@kernel.org>
++R: Dave Hansen <dave.hansen@linux.intel.com>
++L: linux-sgx@vger.kernel.org
++S: Supported
++Q: https://patchwork.kernel.org/project/intel-sgx/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/sgx
++F: Documentation/x86/sgx.rst
++F: arch/x86/entry/vdso/vsgx.S
++F: arch/x86/include/asm/sgx.h
++F: arch/x86/include/uapi/asm/sgx.h
++F: arch/x86/kernel/cpu/sgx/*
++F: tools/testing/selftests/sgx/*
++K: \bSGX_
++
++INTERCONNECT API
++M: Georgi Djakov <djakov@kernel.org>
++L: linux-pm@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc.git
++F: Documentation/devicetree/bindings/interconnect/
++F: Documentation/driver-api/interconnect.rst
++F: drivers/interconnect/
++F: include/dt-bindings/interconnect/
++F: include/linux/interconnect-provider.h
++F: include/linux/interconnect.h
++
++INTERRUPT COUNTER DRIVER
++M: Oleksij Rempel <o.rempel@pengutronix.de>
++R: Pengutronix Kernel Team <kernel@pengutronix.de>
++L: linux-iio@vger.kernel.org
++F: Documentation/devicetree/bindings/counter/interrupt-counter.yaml
++F: drivers/counter/interrupt-cnt.c
++
++INVENSENSE ICM-426xx IMU DRIVER
++M: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++W: https://invensense.tdk.com/
++F: Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml
++F: drivers/iio/imu/inv_icm42600/
++
++INVENSENSE MPU-3050 GYROSCOPE DRIVER
++M: Linus Walleij <linus.walleij@linaro.org>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/iio/gyroscope/invensense,mpu3050.yaml
++F: drivers/iio/gyro/mpu3050*
++
++IOC3 ETHERNET DRIVER
++M: Ralf Baechle <ralf@linux-mips.org>
++L: linux-mips@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/sgi/ioc3-eth.c
++
++IOMAP FILESYSTEM LIBRARY
++M: Christoph Hellwig <hch@infradead.org>
++M: Darrick J. Wong <djwong@kernel.org>
++M: linux-xfs@vger.kernel.org
++M: linux-fsdevel@vger.kernel.org
++L: linux-xfs@vger.kernel.org
++L: linux-fsdevel@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git
++F: fs/iomap/
++F: include/linux/iomap.h
++
++IOMMU DRIVERS
++M: Joerg Roedel <joro@8bytes.org>
++M: Will Deacon <will@kernel.org>
++L: iommu@lists.linux-foundation.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git
++F: Documentation/devicetree/bindings/iommu/
++F: Documentation/userspace-api/iommu.rst
++F: drivers/iommu/
++F: include/linux/iommu.h
++F: include/linux/iova.h
++F: include/linux/of_iommu.h
++F: include/uapi/linux/iommu.h
++
++IO_URING
++M: Jens Axboe <axboe@kernel.dk>
++R: Pavel Begunkov <asml.silence@gmail.com>
++L: io-uring@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.dk/linux-block
++T: git git://git.kernel.dk/liburing
++F: fs/io-wq.c
++F: fs/io-wq.h
++F: fs/io_uring.c
++F: include/linux/io_uring.h
++F: include/uapi/linux/io_uring.h
++F: tools/io_uring/
++
++IPMI SUBSYSTEM
++M: Corey Minyard <minyard@acm.org>
++L: openipmi-developer@lists.sourceforge.net (moderated for non-subscribers)
++S: Supported
++W: http://openipmi.sourceforge.net/
++F: Documentation/driver-api/ipmi.rst
++F: Documentation/devicetree/bindings/ipmi/
++F: drivers/char/ipmi/
++F: include/linux/ipmi*
++F: include/uapi/linux/ipmi*
++
++IPS SCSI RAID DRIVER
++M: Adaptec OEM Raid Solutions <aacraid@microsemi.com>
++L: linux-scsi@vger.kernel.org
++S: Maintained
++W: http://www.adaptec.com/
++F: drivers/scsi/ips*
++
++IPVS
++M: Simon Horman <horms@verge.net.au>
++M: Julian Anastasov <ja@ssi.bg>
++L: netdev@vger.kernel.org
++L: lvs-devel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs-next.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs.git
++F: Documentation/networking/ipvs-sysctl.rst
++F: include/net/ip_vs.h
++F: include/uapi/linux/ip_vs.h
++F: net/netfilter/ipvs/
++
++IPWIRELESS DRIVER
++M: Jiri Kosina <jikos@kernel.org>
++M: David Sterba <dsterba@suse.com>
++S: Odd Fixes
++F: drivers/tty/ipwireless/
++
++IRQ DOMAINS (IRQ NUMBER MAPPING LIBRARY)
++M: Marc Zyngier <maz@kernel.org>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core
++F: Documentation/core-api/irq/irq-domain.rst
++F: include/linux/irqdomain.h
++F: kernel/irq/irqdomain.c
++F: kernel/irq/msi.c
++
++IRQ SUBSYSTEM
++M: Thomas Gleixner <tglx@linutronix.de>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core
++F: kernel/irq/
++
++IRQCHIP DRIVERS
++M: Thomas Gleixner <tglx@linutronix.de>
++M: Marc Zyngier <maz@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core
++F: Documentation/devicetree/bindings/interrupt-controller/
++F: drivers/irqchip/
++
++ISA
++M: William Breathitt Gray <vilhelm.gray@gmail.com>
++S: Maintained
++F: Documentation/driver-api/isa.rst
++F: drivers/base/isa.c
++F: include/linux/isa.h
++
++ISA RADIO MODULE
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/radio-isa*
++
++ISAPNP
++M: Jaroslav Kysela <perex@perex.cz>
++S: Maintained
++F: Documentation/driver-api/isapnp.rst
++F: drivers/pnp/isapnp/
++F: include/linux/isapnp.h
++
++ISCSI
++M: Lee Duncan <lduncan@suse.com>
++M: Chris Leech <cleech@redhat.com>
++L: open-iscsi@googlegroups.com
++L: linux-scsi@vger.kernel.org
++S: Maintained
++W: www.open-iscsi.com
++F: drivers/scsi/*iscsi*
++F: include/scsi/*iscsi*
++
++iSCSI BOOT FIRMWARE TABLE (iBFT) DRIVER
++M: Peter Jones <pjones@redhat.com>
++M: Konrad Rzeszutek Wilk <konrad@kernel.org>
++S: Maintained
++F: drivers/firmware/iscsi_ibft*
++
++ISCSI EXTENSIONS FOR RDMA (ISER) INITIATOR
++M: Sagi Grimberg <sagi@grimberg.me>
++M: Max Gurtovoy <mgurtovoy@nvidia.com>
++L: linux-rdma@vger.kernel.org
++S: Supported
++W: http://www.openfabrics.org
++W: www.open-iscsi.org
++Q: http://patchwork.kernel.org/project/linux-rdma/list/
++F: drivers/infiniband/ulp/iser/
++
++ISCSI EXTENSIONS FOR RDMA (ISER) TARGET
++M: Sagi Grimberg <sagi@grimberg.me>
++L: linux-rdma@vger.kernel.org
++L: target-devel@vger.kernel.org
++S: Supported
++W: http://www.linux-iscsi.org
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending.git master
++F: drivers/infiniband/ulp/isert
++
++ISDN/CMTP OVER BLUETOOTH
++M: Karsten Keil <isdn@linux-pingi.de>
++L: isdn4linux@listserv.isdn4linux.de (subscribers-only)
++L: netdev@vger.kernel.org
++S: Odd Fixes
++W: http://www.isdn4linux.de
++F: Documentation/isdn/
++F: drivers/isdn/capi/
++F: include/linux/isdn/
++F: include/uapi/linux/isdn/
++F: net/bluetooth/cmtp/
++
++ISDN/mISDN SUBSYSTEM
++M: Karsten Keil <isdn@linux-pingi.de>
++L: isdn4linux@listserv.isdn4linux.de (subscribers-only)
++L: netdev@vger.kernel.org
++S: Maintained
++W: http://www.isdn4linux.de
++F: drivers/isdn/Kconfig
++F: drivers/isdn/Makefile
++F: drivers/isdn/hardware/
++F: drivers/isdn/mISDN/
++
++IT87 HARDWARE MONITORING DRIVER
++M: Jean Delvare <jdelvare@suse.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/it87.rst
++F: drivers/hwmon/it87.c
++
++IT913X MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/tuners/it913x*
++
++ITE IT66121 HDMI BRIDGE DRIVER
++M: Phong LE <ple@baylibre.com>
++M: Neil Armstrong <narmstrong@baylibre.com>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/bridge/ite,it66121.yaml
++F: drivers/gpu/drm/bridge/ite-it66121.c
++
++IVTV VIDEO4LINUX DRIVER
++M: Andy Walls <awalls@md.metrocast.net>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/admin-guide/media/ivtv*
++F: drivers/media/pci/ivtv/
++F: include/uapi/linux/ivtv*
++
++IX2505V MEDIA DRIVER
++M: Malcolm Priestley <tvboxspy@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++F: drivers/media/dvb-frontends/ix2505v*
++
++JAILHOUSE HYPERVISOR INTERFACE
++M: Jan Kiszka <jan.kiszka@siemens.com>
++L: jailhouse-dev@googlegroups.com
++S: Maintained
++F: arch/x86/include/asm/jailhouse_para.h
++F: arch/x86/kernel/jailhouse.c
++
++JC42.4 TEMPERATURE SENSOR DRIVER
++M: Guenter Roeck <linux@roeck-us.net>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/jc42.rst
++F: drivers/hwmon/jc42.c
++
++JFS FILESYSTEM
++M: Dave Kleikamp <shaggy@kernel.org>
++L: jfs-discussion@lists.sourceforge.net
++S: Maintained
++W: http://jfs.sourceforge.net/
++T: git git://github.com/kleikamp/linux-shaggy.git
++F: Documentation/admin-guide/jfs.rst
++F: fs/jfs/
++
++JME NETWORK DRIVER
++M: Guo-Fu Tseng <cooldavid@cooldavid.org>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/jme.*
++
++JOURNALLING FLASH FILE SYSTEM V2 (JFFS2)
++M: David Woodhouse <dwmw2@infradead.org>
++M: Richard Weinberger <richard@nod.at>
++L: linux-mtd@lists.infradead.org
++S: Odd Fixes
++W: http://www.linux-mtd.infradead.org/doc/jffs2.html
++T: git git://git.infradead.org/ubifs-2.6.git
++F: fs/jffs2/
++F: include/uapi/linux/jffs2.h
++
++JOURNALLING LAYER FOR BLOCK DEVICES (JBD2)
++M: "Theodore Ts'o" <tytso@mit.edu>
++M: Jan Kara <jack@suse.com>
++L: linux-ext4@vger.kernel.org
++S: Maintained
++F: fs/jbd2/
++F: include/linux/jbd2.h
++
++JPU V4L2 MEM2MEM DRIVER FOR RENESAS
++M: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/platform/rcar_jpu.c
++
++JSM Neo PCI based serial card
++L: linux-serial@vger.kernel.org
++S: Orphan
++F: drivers/tty/serial/jsm/
++
++K10TEMP HARDWARE MONITORING DRIVER
++M: Clemens Ladisch <clemens@ladisch.de>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/k10temp.rst
++F: drivers/hwmon/k10temp.c
++
++K8TEMP HARDWARE MONITORING DRIVER
++M: Rudolf Marek <r.marek@assembler.cz>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/k8temp.rst
++F: drivers/hwmon/k8temp.c
++
++KASAN
++M: Andrey Ryabinin <ryabinin.a.a@gmail.com>
++R: Alexander Potapenko <glider@google.com>
++R: Andrey Konovalov <andreyknvl@gmail.com>
++R: Dmitry Vyukov <dvyukov@google.com>
++L: kasan-dev@googlegroups.com
++S: Maintained
++F: Documentation/dev-tools/kasan.rst
++F: arch/*/include/asm/*kasan.h
++F: arch/*/mm/kasan_init*
++F: include/linux/kasan*.h
++F: lib/Kconfig.kasan
++F: lib/test_kasan*.c
++F: mm/kasan/
++F: scripts/Makefile.kasan
++
++KCONFIG
++M: Masahiro Yamada <masahiroy@kernel.org>
++L: linux-kbuild@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git kconfig
++F: Documentation/kbuild/kconfig*
++F: scripts/Kconfig.include
++F: scripts/kconfig/
++
++KCOV
++R: Dmitry Vyukov <dvyukov@google.com>
++R: Andrey Konovalov <andreyknvl@gmail.com>
++L: kasan-dev@googlegroups.com
++S: Maintained
++F: Documentation/dev-tools/kcov.rst
++F: include/linux/kcov.h
++F: include/uapi/linux/kcov.h
++F: kernel/kcov.c
++F: scripts/Makefile.kcov
++
++KCSAN
++M: Marco Elver <elver@google.com>
++R: Dmitry Vyukov <dvyukov@google.com>
++L: kasan-dev@googlegroups.com
++S: Maintained
++F: Documentation/dev-tools/kcsan.rst
++F: include/linux/kcsan*.h
++F: kernel/kcsan/
++F: lib/Kconfig.kcsan
++F: scripts/Makefile.kcsan
++
++KDUMP
++M: Dave Young <dyoung@redhat.com>
++M: Baoquan He <bhe@redhat.com>
++R: Vivek Goyal <vgoyal@redhat.com>
++L: kexec@lists.infradead.org
++S: Maintained
++W: http://lse.sourceforge.net/kdump/
++F: Documentation/admin-guide/kdump/
++F: fs/proc/vmcore.c
++F: include/linux/crash_core.h
++F: include/linux/crash_dump.h
++F: include/uapi/linux/vmcore.h
++F: kernel/crash_*.c
++
++KEENE FM RADIO TRANSMITTER DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/radio-keene*
++
++KERNEL AUTOMOUNTER
++M: Ian Kent <raven@themaw.net>
++L: autofs@vger.kernel.org
++S: Maintained
++F: fs/autofs/
++
++KERNEL BUILD + files below scripts/ (unless maintained elsewhere)
++M: Masahiro Yamada <masahiroy@kernel.org>
++M: Michal Marek <michal.lkml@markovi.net>
++R: Nick Desaulniers <ndesaulniers@google.com>
++L: linux-kbuild@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git
++F: Documentation/kbuild/
++F: Makefile
++F: scripts/*vmlinux*
++F: scripts/Kbuild*
++F: scripts/Makefile*
++F: scripts/basic/
++F: scripts/dummy-tools/
++F: scripts/mk*
++F: scripts/mod/
++F: scripts/package/
++
++KERNEL JANITORS
++L: kernel-janitors@vger.kernel.org
++S: Odd Fixes
++W: http://kernelnewbies.org/KernelJanitors
++
++KERNEL NFSD, SUNRPC, AND LOCKD SERVERS
++M: "J. Bruce Fields" <bfields@fieldses.org>
++M: Chuck Lever <chuck.lever@oracle.com>
++L: linux-nfs@vger.kernel.org
++S: Supported
++W: http://nfs.sourceforge.net/
++T: git git://linux-nfs.org/~bfields/linux.git
++F: fs/lockd/
++F: fs/nfs_common/
++F: fs/nfsd/
++F: include/linux/lockd/
++F: include/linux/sunrpc/
++F: include/uapi/linux/nfsd/
++F: include/uapi/linux/sunrpc/
++F: net/sunrpc/
++F: Documentation/filesystems/nfs/
++
++KERNEL REGRESSIONS
++M: Thorsten Leemhuis <linux@leemhuis.info>
++L: regressions@lists.linux.dev
++S: Supported
++
++KERNEL SELFTEST FRAMEWORK
++M: Shuah Khan <shuah@kernel.org>
++M: Shuah Khan <skhan@linuxfoundation.org>
++L: linux-kselftest@vger.kernel.org
++S: Maintained
++Q: https://patchwork.kernel.org/project/linux-kselftest/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git
++F: Documentation/dev-tools/kselftest*
++F: tools/testing/selftests/
++
++KERNEL SMB3 SERVER (KSMBD)
++M: Namjae Jeon <linkinjeon@kernel.org>
++M: Sergey Senozhatsky <senozhatsky@chromium.org>
++M: Steve French <sfrench@samba.org>
++M: Hyunchul Lee <hyc.lee@gmail.com>
++L: linux-cifs@vger.kernel.org
++S: Maintained
++T: git git://git.samba.org/ksmbd.git
++F: fs/ksmbd/
++F: fs/smbfs_common/
++
++KERNEL UNIT TESTING FRAMEWORK (KUnit)
++M: Brendan Higgins <brendanhiggins@google.com>
++L: linux-kselftest@vger.kernel.org
++L: kunit-dev@googlegroups.com
++S: Maintained
++W: https://google.github.io/kunit-docs/third_party/kernel/docs/
++F: Documentation/dev-tools/kunit/
++F: include/kunit/
++F: lib/kunit/
++F: tools/testing/kunit/
++
++KERNEL USERMODE HELPER
++M: Luis Chamberlain <mcgrof@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: include/linux/umh.h
++F: kernel/umh.c
++
++KERNEL VIRTUAL MACHINE (KVM)
++M: Paolo Bonzini <pbonzini@redhat.com>
++L: kvm@vger.kernel.org
++S: Supported
++W: http://www.linux-kvm.org
++T: git git://git.kernel.org/pub/scm/virt/kvm/kvm.git
++F: Documentation/virt/kvm/
++F: include/asm-generic/kvm*
++F: include/kvm/iodev.h
++F: include/linux/kvm*
++F: include/trace/events/kvm.h
++F: include/uapi/asm-generic/kvm*
++F: include/uapi/linux/kvm*
++F: tools/kvm/
++F: tools/testing/selftests/kvm/
++F: virt/kvm/*
++
++KERNEL VIRTUAL MACHINE FOR ARM64 (KVM/arm64)
++M: Marc Zyngier <maz@kernel.org>
++R: James Morse <james.morse@arm.com>
++R: Alexandru Elisei <alexandru.elisei@arm.com>
++R: Suzuki K Poulose <suzuki.poulose@arm.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: kvmarm@lists.cs.columbia.edu (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git
++F: arch/arm64/include/asm/kvm*
++F: arch/arm64/include/uapi/asm/kvm*
++F: arch/arm64/kvm/
++F: include/kvm/arm_*
++F: tools/testing/selftests/kvm/*/aarch64/
++F: tools/testing/selftests/kvm/aarch64/
++
++KERNEL VIRTUAL MACHINE FOR MIPS (KVM/mips)
++M: Huacai Chen <chenhuacai@kernel.org>
++M: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
++L: linux-mips@vger.kernel.org
++L: kvm@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/virt/kvm/kvm.git
++F: arch/mips/include/asm/kvm*
++F: arch/mips/include/uapi/asm/kvm*
++F: arch/mips/kvm/
++
++KERNEL VIRTUAL MACHINE FOR POWERPC (KVM/powerpc)
++M: Paul Mackerras <paulus@ozlabs.org>
++L: kvm-ppc@vger.kernel.org
++S: Supported
++W: http://www.linux-kvm.org/
++T: git git://github.com/agraf/linux-2.6.git
++F: arch/powerpc/include/asm/kvm*
++F: arch/powerpc/include/uapi/asm/kvm*
++F: arch/powerpc/kernel/kvm*
++F: arch/powerpc/kvm/
++
++KERNEL VIRTUAL MACHINE for s390 (KVM/s390)
++M: Christian Borntraeger <borntraeger@de.ibm.com>
++M: Janosch Frank <frankja@linux.ibm.com>
++R: David Hildenbrand <david@redhat.com>
++R: Claudio Imbrenda <imbrenda@linux.ibm.com>
++L: kvm@vger.kernel.org
++S: Supported
++W: http://www.ibm.com/developerworks/linux/linux390/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux.git
++F: Documentation/virt/kvm/s390*
++F: arch/s390/include/asm/gmap.h
++F: arch/s390/include/asm/kvm*
++F: arch/s390/include/uapi/asm/kvm*
++F: arch/s390/kernel/uv.c
++F: arch/s390/kvm/
++F: arch/s390/mm/gmap.c
++F: tools/testing/selftests/kvm/*/s390x/
++F: tools/testing/selftests/kvm/s390x/
++
++KERNEL VIRTUAL MACHINE FOR X86 (KVM/x86)
++M: Paolo Bonzini <pbonzini@redhat.com>
++R: Sean Christopherson <seanjc@google.com>
++R: Vitaly Kuznetsov <vkuznets@redhat.com>
++R: Wanpeng Li <wanpengli@tencent.com>
++R: Jim Mattson <jmattson@google.com>
++R: Joerg Roedel <joro@8bytes.org>
++L: kvm@vger.kernel.org
++S: Supported
++W: http://www.linux-kvm.org
++T: git git://git.kernel.org/pub/scm/virt/kvm/kvm.git
++F: arch/x86/include/asm/kvm*
++F: arch/x86/include/asm/pvclock-abi.h
++F: arch/x86/include/asm/svm.h
++F: arch/x86/include/asm/vmx*.h
++F: arch/x86/include/uapi/asm/kvm*
++F: arch/x86/include/uapi/asm/svm.h
++F: arch/x86/include/uapi/asm/vmx.h
++F: arch/x86/kernel/kvm.c
++F: arch/x86/kernel/kvmclock.c
++F: arch/x86/kvm/
++F: arch/x86/kvm/*/
++
++KERNFS
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++M: Tejun Heo <tj@kernel.org>
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
++F: fs/kernfs/
++F: include/linux/kernfs.h
++
++KEXEC
++M: Eric Biederman <ebiederm@xmission.com>
++L: kexec@lists.infradead.org
++S: Maintained
++W: http://kernel.org/pub/linux/utils/kernel/kexec/
++F: include/linux/kexec.h
++F: include/uapi/linux/kexec.h
++F: kernel/kexec*
++
++KEYS-ENCRYPTED
++M: Mimi Zohar <zohar@linux.ibm.com>
++L: linux-integrity@vger.kernel.org
++L: keyrings@vger.kernel.org
++S: Supported
++F: Documentation/security/keys/trusted-encrypted.rst
++F: include/keys/encrypted-type.h
++F: security/keys/encrypted-keys/
++
++KEYS-TRUSTED
++M: James Bottomley <jejb@linux.ibm.com>
++M: Jarkko Sakkinen <jarkko@kernel.org>
++M: Mimi Zohar <zohar@linux.ibm.com>
++L: linux-integrity@vger.kernel.org
++L: keyrings@vger.kernel.org
++S: Supported
++F: Documentation/security/keys/trusted-encrypted.rst
++F: include/keys/trusted-type.h
++F: include/keys/trusted_tpm.h
++F: security/keys/trusted-keys/
++
++KEYS-TRUSTED-TEE
++M: Sumit Garg <sumit.garg@linaro.org>
++L: linux-integrity@vger.kernel.org
++L: keyrings@vger.kernel.org
++S: Supported
++F: include/keys/trusted_tee.h
++F: security/keys/trusted-keys/trusted_tee.c
++
++KEYS/KEYRINGS
++M: David Howells <dhowells@redhat.com>
++M: Jarkko Sakkinen <jarkko@kernel.org>
++L: keyrings@vger.kernel.org
++S: Maintained
++F: Documentation/security/keys/core.rst
++F: include/keys/
++F: include/linux/key-type.h
++F: include/linux/key.h
++F: include/linux/keyctl.h
++F: include/uapi/linux/keyctl.h
++F: security/keys/
++
++KFENCE
++M: Alexander Potapenko <glider@google.com>
++M: Marco Elver <elver@google.com>
++R: Dmitry Vyukov <dvyukov@google.com>
++L: kasan-dev@googlegroups.com
++S: Maintained
++F: Documentation/dev-tools/kfence.rst
++F: arch/*/include/asm/kfence.h
++F: include/linux/kfence.h
++F: lib/Kconfig.kfence
++F: mm/kfence/
++
++KFIFO
++M: Stefani Seibold <stefani@seibold.net>
++S: Maintained
++F: include/linux/kfifo.h
++F: lib/kfifo.c
++F: samples/kfifo/
++
++KGDB / KDB /debug_core
++M: Jason Wessel <jason.wessel@windriver.com>
++M: Daniel Thompson <daniel.thompson@linaro.org>
++R: Douglas Anderson <dianders@chromium.org>
++L: kgdb-bugreport@lists.sourceforge.net
++S: Maintained
++W: http://kgdb.wiki.kernel.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb.git
++F: Documentation/dev-tools/kgdb.rst
++F: drivers/misc/kgdbts.c
++F: drivers/tty/serial/kgdboc.c
++F: include/linux/kdb.h
++F: include/linux/kgdb.h
++F: kernel/debug/
++
++KHADAS MCU MFD DRIVER
++M: Neil Armstrong <narmstrong@baylibre.com>
++L: linux-amlogic@lists.infradead.org
++S: Maintained
++F: Documentation/devicetree/bindings/mfd/khadas,mcu.yaml
++F: drivers/mfd/khadas-mcu.c
++F: include/linux/mfd/khadas-mcu.h
++F: drivers/thermal/khadas_mcu_fan.c
++
++KMEMLEAK
++M: Catalin Marinas <catalin.marinas@arm.com>
++S: Maintained
++F: Documentation/dev-tools/kmemleak.rst
++F: include/linux/kmemleak.h
++F: mm/kmemleak.c
++F: samples/kmemleak/kmemleak-test.c
++
++KMOD KERNEL MODULE LOADER - USERMODE HELPER
++M: Luis Chamberlain <mcgrof@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: include/linux/kmod.h
++F: kernel/kmod.c
++F: lib/test_kmod.c
++F: tools/testing/selftests/kmod/
++
++KPROBES
++M: Naveen N. Rao <naveen.n.rao@linux.ibm.com>
++M: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
++M: "David S. Miller" <davem@davemloft.net>
++M: Masami Hiramatsu <mhiramat@kernel.org>
++S: Maintained
++F: Documentation/trace/kprobes.rst
++F: include/asm-generic/kprobes.h
++F: include/linux/kprobes.h
++F: kernel/kprobes.c
++
++KS0108 LCD CONTROLLER DRIVER
++M: Miguel Ojeda <ojeda@kernel.org>
++S: Maintained
++F: Documentation/admin-guide/auxdisplay/ks0108.rst
++F: drivers/auxdisplay/ks0108.c
++F: include/linux/ks0108.h
++
++KTD253 BACKLIGHT DRIVER
++M: Linus Walleij <linus.walleij@linaro.org>
++S: Maintained
++F: Documentation/devicetree/bindings/leds/backlight/kinetic,ktd253.yaml
++F: drivers/video/backlight/ktd253-backlight.c
++
++KTEST
++M: Steven Rostedt <rostedt@goodmis.org>
++M: John Hawley <warthog9@eaglescrag.net>
++S: Maintained
++F: tools/testing/ktest
++
++L3MDEV
++M: David Ahern <dsahern@kernel.org>
++L: netdev@vger.kernel.org
++S: Maintained
++F: include/net/l3mdev.h
++F: net/l3mdev
++
++L7 BPF FRAMEWORK
++M: John Fastabend <john.fastabend@gmail.com>
++M: Daniel Borkmann <daniel@iogearbox.net>
++M: Jakub Sitnicki <jakub@cloudflare.com>
++M: Lorenz Bauer <lmb@cloudflare.com>
++L: netdev@vger.kernel.org
++L: bpf@vger.kernel.org
++S: Maintained
++F: include/linux/skmsg.h
++F: net/core/skmsg.c
++F: net/core/sock_map.c
++F: net/ipv4/tcp_bpf.c
++F: net/ipv4/udp_bpf.c
++F: net/unix/unix_bpf.c
++
++LANDLOCK SECURITY MODULE
++M: Mickaël Salaün <mic@digikod.net>
++L: linux-security-module@vger.kernel.org
++S: Supported
++W: https://landlock.io
++T: git https://github.com/landlock-lsm/linux.git
++F: Documentation/security/landlock.rst
++F: Documentation/userspace-api/landlock.rst
++F: include/uapi/linux/landlock.h
++F: samples/landlock/
++F: security/landlock/
++F: tools/testing/selftests/landlock/
++K: landlock
++K: LANDLOCK
++
++LANTIQ / INTEL Ethernet drivers
++M: Hauke Mehrtens <hauke@hauke-m.de>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/dsa/lantiq_gswip.c
++F: drivers/net/dsa/lantiq_pce.h
++F: drivers/net/ethernet/lantiq_xrx200.c
++F: net/dsa/tag_gswip.c
++
++LANTIQ MIPS ARCHITECTURE
++M: John Crispin <john@phrozen.org>
++L: linux-mips@vger.kernel.org
++S: Maintained
++F: arch/mips/lantiq
++F: drivers/soc/lantiq
++
++LASI 53c700 driver for PARISC
++M: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
++L: linux-scsi@vger.kernel.org
++S: Maintained
++F: Documentation/scsi/53c700.rst
++F: drivers/scsi/53c700*
++
++LEAKING_ADDRESSES
++M: Tobin C. Harding <me@tobin.cc>
++M: Tycho Andersen <tycho@tycho.pizza>
++L: linux-hardening@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tobin/leaks.git
++F: scripts/leaking_addresses.pl
++
++LED SUBSYSTEM
++M: Pavel Machek <pavel@ucw.cz>
++L: linux-leds@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds.git
++F: Documentation/devicetree/bindings/leds/
++F: drivers/leds/
++F: include/linux/leds.h
++
++LEGACY EEPROM DRIVER
++M: Jean Delvare <jdelvare@suse.com>
++S: Maintained
++F: Documentation/misc-devices/eeprom.rst
++F: drivers/misc/eeprom/eeprom.c
++
++LEGO MINDSTORMS EV3
++R: David Lechner <david@lechnology.com>
++S: Maintained
++F: Documentation/devicetree/bindings/power/supply/lego,ev3-battery.yaml
++F: arch/arm/boot/dts/da850-lego-ev3.dts
++F: drivers/power/supply/lego_ev3_battery.c
++
++LEGO USB Tower driver
++M: Juergen Stuber <starblue@users.sourceforge.net>
++L: legousb-devel@lists.sourceforge.net
++S: Maintained
++W: http://legousb.sourceforge.net/
++F: drivers/usb/misc/legousbtower.c
++
++LG LAPTOP EXTRAS
++M: Matan Ziv-Av <matan@svgalib.org>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-platform-lg-laptop
++F: Documentation/admin-guide/laptops/lg-laptop.rst
++F: drivers/platform/x86/lg-laptop.c
++
++LG2160 MEDIA DRIVER
++M: Michael Krufky <mkrufky@linuxtv.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://github.com/mkrufky
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/mkrufky/tuners.git
++F: drivers/media/dvb-frontends/lg2160.*
++
++LGDT3305 MEDIA DRIVER
++M: Michael Krufky <mkrufky@linuxtv.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://github.com/mkrufky
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/mkrufky/tuners.git
++F: drivers/media/dvb-frontends/lgdt3305.*
++
++LIBATA PATA ARASAN COMPACT FLASH CONTROLLER
++M: Viresh Kumar <vireshk@kernel.org>
++L: linux-ide@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git
++F: drivers/ata/pata_arasan_cf.c
++F: include/linux/pata_arasan_cf_data.h
++
++LIBATA PATA FARADAY FTIDE010 AND GEMINI SATA BRIDGE DRIVERS
++M: Linus Walleij <linus.walleij@linaro.org>
++L: linux-ide@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git
++F: drivers/ata/pata_ftide010.c
++F: drivers/ata/sata_gemini.c
++F: drivers/ata/sata_gemini.h
++
++LIBATA SATA AHCI PLATFORM devices support
++M: Hans de Goede <hdegoede@redhat.com>
++M: Jens Axboe <axboe@kernel.dk>
++L: linux-ide@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git
++F: drivers/ata/ahci_platform.c
++F: drivers/ata/libahci_platform.c
++F: include/linux/ahci_platform.h
++
++LIBATA SATA PROMISE TX2/TX4 CONTROLLER DRIVER
++M: Mikael Pettersson <mikpelinux@gmail.com>
++L: linux-ide@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git
++F: drivers/ata/sata_promise.*
++
++LIBATA SUBSYSTEM (Serial and Parallel ATA drivers)
++M: Damien Le Moal <damien.lemoal@opensource.wdc.com>
++L: linux-ide@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata.git
++F: Documentation/devicetree/bindings/ata/
++F: drivers/ata/
++F: include/linux/ata.h
++F: include/linux/libata.h
++
++LIBLOCKDEP
++M: Sasha Levin <alexander.levin@microsoft.com>
++S: Maintained
++F: tools/lib/lockdep/
++
++LIBNVDIMM BLK: MMIO-APERTURE DRIVER
++M: Dan Williams <dan.j.williams@intel.com>
++M: Vishal Verma <vishal.l.verma@intel.com>
++M: Dave Jiang <dave.jiang@intel.com>
++L: nvdimm@lists.linux.dev
++S: Supported
++Q: https://patchwork.kernel.org/project/linux-nvdimm/list/
++P: Documentation/nvdimm/maintainer-entry-profile.rst
++F: drivers/nvdimm/blk.c
++F: drivers/nvdimm/region_devs.c
++
++LIBNVDIMM BTT: BLOCK TRANSLATION TABLE
++M: Vishal Verma <vishal.l.verma@intel.com>
++M: Dan Williams <dan.j.williams@intel.com>
++M: Dave Jiang <dave.jiang@intel.com>
++L: nvdimm@lists.linux.dev
++S: Supported
++Q: https://patchwork.kernel.org/project/linux-nvdimm/list/
++P: Documentation/nvdimm/maintainer-entry-profile.rst
++F: drivers/nvdimm/btt*
++
++LIBNVDIMM PMEM: PERSISTENT MEMORY DRIVER
++M: Dan Williams <dan.j.williams@intel.com>
++M: Vishal Verma <vishal.l.verma@intel.com>
++M: Dave Jiang <dave.jiang@intel.com>
++L: nvdimm@lists.linux.dev
++S: Supported
++Q: https://patchwork.kernel.org/project/linux-nvdimm/list/
++P: Documentation/nvdimm/maintainer-entry-profile.rst
++F: drivers/nvdimm/pmem*
++
++LIBNVDIMM: DEVICETREE BINDINGS
++M: Oliver O'Halloran <oohall@gmail.com>
++L: nvdimm@lists.linux.dev
++S: Supported
++Q: https://patchwork.kernel.org/project/linux-nvdimm/list/
++F: Documentation/devicetree/bindings/pmem/pmem-region.txt
++F: drivers/nvdimm/of_pmem.c
++
++LIBNVDIMM: NON-VOLATILE MEMORY DEVICE SUBSYSTEM
++M: Dan Williams <dan.j.williams@intel.com>
++M: Vishal Verma <vishal.l.verma@intel.com>
++M: Dave Jiang <dave.jiang@intel.com>
++M: Ira Weiny <ira.weiny@intel.com>
++L: nvdimm@lists.linux.dev
++S: Supported
++Q: https://patchwork.kernel.org/project/linux-nvdimm/list/
++P: Documentation/nvdimm/maintainer-entry-profile.rst
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm.git
++F: drivers/acpi/nfit/*
++F: drivers/nvdimm/*
++F: include/linux/libnvdimm.h
++F: include/linux/nd.h
++F: include/uapi/linux/ndctl.h
++F: tools/testing/nvdimm/
++
++LICENSES and SPDX stuff
++M: Thomas Gleixner <tglx@linutronix.de>
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++L: linux-spdx@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx.git
++F: COPYING
++F: Documentation/process/license-rules.rst
++F: LICENSES/
++F: scripts/spdxcheck-test.sh
++F: scripts/spdxcheck.py
++
++LINEAR RANGES HELPERS
++M: Mark Brown <broonie@kernel.org>
++R: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
++F: lib/linear_ranges.c
++F: lib/test_linear_ranges.c
++F: include/linux/linear_range.h
++
++LINUX FOR POWER MACINTOSH
++M: Benjamin Herrenschmidt <benh@kernel.crashing.org>
++L: linuxppc-dev@lists.ozlabs.org
++S: Odd Fixes
++F: arch/powerpc/platforms/powermac/
++F: drivers/macintosh/
++
++LINUX FOR POWERPC (32-BIT AND 64-BIT)
++M: Michael Ellerman <mpe@ellerman.id.au>
++R: Benjamin Herrenschmidt <benh@kernel.crashing.org>
++R: Paul Mackerras <paulus@samba.org>
++L: linuxppc-dev@lists.ozlabs.org
++S: Supported
++W: https://github.com/linuxppc/wiki/wiki
++Q: http://patchwork.ozlabs.org/project/linuxppc-dev/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
++F: Documentation/ABI/stable/sysfs-firmware-opal-*
++F: Documentation/devicetree/bindings/i2c/i2c-opal.txt
++F: Documentation/devicetree/bindings/powerpc/
++F: Documentation/devicetree/bindings/rtc/rtc-opal.txt
++F: Documentation/powerpc/
++F: arch/powerpc/
++F: drivers/*/*/*pasemi*
++F: drivers/*/*pasemi*
++F: drivers/char/tpm/tpm_ibmvtpm*
++F: drivers/crypto/nx/
++F: drivers/crypto/vmx/
++F: drivers/i2c/busses/i2c-opal.c
++F: drivers/net/ethernet/ibm/ibmveth.*
++F: drivers/net/ethernet/ibm/ibmvnic.*
++F: drivers/pci/hotplug/pnv_php.c
++F: drivers/pci/hotplug/rpa*
++F: drivers/rtc/rtc-opal.c
++F: drivers/scsi/ibmvscsi/
++F: drivers/tty/hvc/hvc_opal.c
++F: drivers/watchdog/wdrtas.c
++F: tools/testing/selftests/powerpc
++N: /pmac
++N: powermac
++N: powernv
++N: [^a-z0-9]ps3
++N: pseries
++
++LINUX FOR POWERPC EMBEDDED MPC5XXX
++M: Anatolij Gustschin <agust@denx.de>
++L: linuxppc-dev@lists.ozlabs.org
++S: Odd Fixes
++F: arch/powerpc/platforms/512x/
++F: arch/powerpc/platforms/52xx/
++
++LINUX FOR POWERPC EMBEDDED PPC4XX
++L: linuxppc-dev@lists.ozlabs.org
++S: Orphan
++F: arch/powerpc/platforms/40x/
++F: arch/powerpc/platforms/44x/
++
++LINUX FOR POWERPC EMBEDDED PPC83XX AND PPC85XX
++M: Scott Wood <oss@buserror.net>
++L: linuxppc-dev@lists.ozlabs.org
++S: Odd fixes
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux.git
++F: Documentation/devicetree/bindings/powerpc/fsl/
++F: arch/powerpc/platforms/83xx/
++F: arch/powerpc/platforms/85xx/
++
++LINUX FOR POWERPC EMBEDDED PPC8XX
++M: Christophe Leroy <christophe.leroy@csgroup.eu>
++L: linuxppc-dev@lists.ozlabs.org
++S: Maintained
++F: arch/powerpc/platforms/8xx/
++
++LINUX KERNEL DUMP TEST MODULE (LKDTM)
++M: Kees Cook <keescook@chromium.org>
++S: Maintained
++F: drivers/misc/lkdtm/*
++F: tools/testing/selftests/lkdtm/*
++
++LINUX KERNEL MEMORY CONSISTENCY MODEL (LKMM)
++M: Alan Stern <stern@rowland.harvard.edu>
++M: Andrea Parri <parri.andrea@gmail.com>
++M: Will Deacon <will@kernel.org>
++M: Peter Zijlstra <peterz@infradead.org>
++M: Boqun Feng <boqun.feng@gmail.com>
++M: Nicholas Piggin <npiggin@gmail.com>
++M: David Howells <dhowells@redhat.com>
++M: Jade Alglave <j.alglave@ucl.ac.uk>
++M: Luc Maranget <luc.maranget@inria.fr>
++M: "Paul E. McKenney" <paulmck@kernel.org>
++R: Akira Yokosawa <akiyks@gmail.com>
++R: Daniel Lustig <dlustig@nvidia.com>
++R: Joel Fernandes <joel@joelfernandes.org>
++L: linux-kernel@vger.kernel.org
++L: linux-arch@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev
++F: Documentation/atomic_bitops.txt
++F: Documentation/atomic_t.txt
++F: Documentation/core-api/refcount-vs-atomic.rst
++F: Documentation/litmus-tests/
++F: Documentation/memory-barriers.txt
++F: tools/memory-model/
++
++LIS3LV02D ACCELEROMETER DRIVER
++M: Eric Piel <eric.piel@tremplin-utc.net>
++S: Maintained
++F: Documentation/misc-devices/lis3lv02d.rst
++F: drivers/misc/lis3lv02d/
++F: drivers/platform/x86/hp_accel.c
++
++LIST KUNIT TEST
++M: David Gow <davidgow@google.com>
++L: linux-kselftest@vger.kernel.org
++L: kunit-dev@googlegroups.com
++S: Maintained
++F: lib/list-test.c
++
++LITEX PLATFORM
++M: Karol Gugala <kgugala@antmicro.com>
++M: Mateusz Holenko <mholenko@antmicro.com>
++S: Maintained
++F: Documentation/devicetree/bindings/*/litex,*.yaml
++F: arch/openrisc/boot/dts/or1klitex.dts
++F: drivers/soc/litex/litex_soc_ctrl.c
++F: drivers/tty/serial/liteuart.c
++F: include/linux/litex.h
++
++LIVE PATCHING
++M: Josh Poimboeuf <jpoimboe@redhat.com>
++M: Jiri Kosina <jikos@kernel.org>
++M: Miroslav Benes <mbenes@suse.cz>
++M: Petr Mladek <pmladek@suse.com>
++R: Joe Lawrence <joe.lawrence@redhat.com>
++L: live-patching@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching.git
++F: Documentation/ABI/testing/sysfs-kernel-livepatch
++F: Documentation/livepatch/
++F: arch/powerpc/include/asm/livepatch.h
++F: arch/s390/include/asm/livepatch.h
++F: arch/x86/include/asm/livepatch.h
++F: include/linux/livepatch.h
++F: kernel/livepatch/
++F: lib/livepatch/
++F: samples/livepatch/
++F: tools/testing/selftests/livepatch/
++
++LLC (802.2)
++L: netdev@vger.kernel.org
++S: Odd fixes
++F: include/linux/llc.h
++F: include/net/llc*
++F: include/uapi/linux/llc.h
++F: net/llc/
++
++LM73 HARDWARE MONITOR DRIVER
++M: Guillaume Ligneul <guillaume.ligneul@gmail.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: drivers/hwmon/lm73.c
++
++LM78 HARDWARE MONITOR DRIVER
++M: Jean Delvare <jdelvare@suse.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/lm78.rst
++F: drivers/hwmon/lm78.c
++
++LM83 HARDWARE MONITOR DRIVER
++M: Jean Delvare <jdelvare@suse.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/lm83.rst
++F: drivers/hwmon/lm83.c
++
++LM90 HARDWARE MONITOR DRIVER
++M: Jean Delvare <jdelvare@suse.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/hwmon/lm90.txt
++F: Documentation/hwmon/lm90.rst
++F: drivers/hwmon/lm90.c
++F: include/dt-bindings/thermal/lm90.h
++
++LM95234 HARDWARE MONITOR DRIVER
++M: Guenter Roeck <linux@roeck-us.net>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/lm95234.rst
++F: drivers/hwmon/lm95234.c
++
++LME2510 MEDIA DRIVER
++M: Malcolm Priestley <tvboxspy@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++F: drivers/media/usb/dvb-usb-v2/lmedm04*
++
++LOADPIN SECURITY MODULE
++M: Kees Cook <keescook@chromium.org>
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git lsm/loadpin
++F: Documentation/admin-guide/LSM/LoadPin.rst
++F: security/loadpin/
++
++LOCKING PRIMITIVES
++M: Peter Zijlstra <peterz@infradead.org>
++M: Ingo Molnar <mingo@redhat.com>
++M: Will Deacon <will@kernel.org>
++R: Waiman Long <longman@redhat.com>
++R: Boqun Feng <boqun.feng@gmail.com> (LOCKDEP)
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/core
++F: Documentation/locking/
++F: arch/*/include/asm/spinlock*.h
++F: include/linux/lockdep.h
++F: include/linux/mutex*.h
++F: include/linux/rwlock*.h
++F: include/linux/rwsem*.h
++F: include/linux/seqlock.h
++F: include/linux/spinlock*.h
++F: kernel/locking/
++F: lib/locking*.[ch]
++X: kernel/locking/locktorture.c
++
++LOGICAL DISK MANAGER SUPPORT (LDM, Windows 2000/XP/Vista Dynamic Disks)
++M: "Richard Russon (FlatCap)" <ldm@flatcap.org>
++L: linux-ntfs-dev@lists.sourceforge.net
++S: Maintained
++W: http://www.linux-ntfs.org/content/view/19/37/
++F: Documentation/admin-guide/ldm.rst
++F: block/partitions/ldm.*
++
++LOGITECH HID GAMING KEYBOARDS
++M: Hans de Goede <hdegoede@redhat.com>
++L: linux-input@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git
++F: drivers/hid/hid-lg-g15.c
++
++LONTIUM LT8912B MIPI TO HDMI BRIDGE
++M: Adrien Grassein <adrien.grassein@gmail.com>
++S: Maintained
++F: Documentation/devicetree/bindings/display/bridge/lontium,lt8912b.yaml
++F: drivers/gpu/drm/bridge/lontium-lt8912b.c
++
++LSILOGIC MPT FUSION DRIVERS (FC/SAS/SPI)
++M: Sathya Prakash <sathya.prakash@broadcom.com>
++M: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
++M: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>
++L: MPT-FusionLinux.pdl@broadcom.com
++L: linux-scsi@vger.kernel.org
++S: Supported
++W: http://www.avagotech.com/support/
++F: drivers/message/fusion/
++F: drivers/scsi/mpt3sas/
++
++LSILOGIC/SYMBIOS/NCR 53C8XX and 53C1010 PCI-SCSI drivers
++M: Matthew Wilcox <willy@infradead.org>
++L: linux-scsi@vger.kernel.org
++S: Maintained
++F: drivers/scsi/sym53c8xx_2/
++
++LTC1660 DAC DRIVER
++M: Marcus Folkesson <marcus.folkesson@gmail.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/iio/dac/lltc,ltc1660.yaml
++F: drivers/iio/dac/ltc1660.c
++
++LTC2947 HARDWARE MONITOR DRIVER
++M: Nuno Sá <nuno.sa@analog.com>
++L: linux-hwmon@vger.kernel.org
++S: Supported
++W: http://ez.analog.com/community/linux-device-drivers
++F: Documentation/devicetree/bindings/hwmon/adi,ltc2947.yaml
++F: drivers/hwmon/ltc2947-core.c
++F: drivers/hwmon/ltc2947-i2c.c
++F: drivers/hwmon/ltc2947-spi.c
++F: drivers/hwmon/ltc2947.h
++
++LTC2983 IIO TEMPERATURE DRIVER
++M: Nuno Sá <nuno.sa@analog.com>
++L: linux-iio@vger.kernel.org
++S: Supported
++W: http://ez.analog.com/community/linux-device-drivers
++F: Documentation/devicetree/bindings/iio/temperature/adi,ltc2983.yaml
++F: drivers/iio/temperature/ltc2983.c
++
++LTC4261 HARDWARE MONITOR DRIVER
++M: Guenter Roeck <linux@roeck-us.net>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/ltc4261.rst
++F: drivers/hwmon/ltc4261.c
++
++LTC4306 I2C MULTIPLEXER DRIVER
++M: Michael Hennerich <michael.hennerich@analog.com>
++L: linux-i2c@vger.kernel.org
++S: Supported
++W: http://ez.analog.com/community/linux-device-drivers
++F: Documentation/devicetree/bindings/i2c/i2c-mux-ltc4306.txt
++F: drivers/i2c/muxes/i2c-mux-ltc4306.c
++
++LTP (Linux Test Project)
++M: Mike Frysinger <vapier@gentoo.org>
++M: Cyril Hrubis <chrubis@suse.cz>
++M: Wanlong Gao <wanlong.gao@gmail.com>
++M: Jan Stancek <jstancek@redhat.com>
++M: Stanislav Kholmanskikh <stanislav.kholmanskikh@oracle.com>
++M: Alexey Kodanev <alexey.kodanev@oracle.com>
++L: ltp@lists.linux.it (subscribers-only)
++S: Maintained
++W: http://linux-test-project.github.io/
++T: git git://github.com/linux-test-project/ltp.git
++
++LYNX PCS MODULE
++M: Ioana Ciornei <ioana.ciornei@nxp.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/pcs/pcs-lynx.c
++F: include/linux/pcs-lynx.h
++
++M68K ARCHITECTURE
++M: Geert Uytterhoeven <geert@linux-m68k.org>
++L: linux-m68k@lists.linux-m68k.org
++S: Maintained
++W: http://www.linux-m68k.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k.git
++F: arch/m68k/
++F: drivers/zorro/
++
++M68K ON APPLE MACINTOSH
++M: Joshua Thompson <funaho@jurai.org>
++L: linux-m68k@lists.linux-m68k.org
++S: Maintained
++W: http://www.mac.linux-m68k.org/
++F: arch/m68k/mac/
++F: drivers/macintosh/adb-iop.c
++F: drivers/macintosh/via-macii.c
++
++M68K ON HP9000/300
++M: Philip Blundell <philb@gnu.org>
++S: Maintained
++W: http://www.tazenda.demon.co.uk/phil/linux-hp
++F: arch/m68k/hp300/
++
++M88DS3103 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/dvb-frontends/m88ds3103*
++
++M88RS2000 MEDIA DRIVER
++M: Malcolm Priestley <tvboxspy@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++F: drivers/media/dvb-frontends/m88rs2000*
++
++MA901 MASTERKIT USB FM RADIO DRIVER
++M: Alexey Klimov <klimov.linux@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/radio-ma901.c
++
++MAC80211
++M: Johannes Berg <johannes@sipsolutions.net>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++W: https://wireless.wiki.kernel.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git
++F: Documentation/networking/mac80211-injection.rst
++F: Documentation/networking/mac80211_hwsim/mac80211_hwsim.rst
++F: drivers/net/wireless/mac80211_hwsim.[ch]
++F: include/net/mac80211.h
++F: net/mac80211/
++
++MAILBOX API
++M: Jassi Brar <jassisinghbrar@gmail.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: drivers/mailbox/
++F: include/linux/mailbox_client.h
++F: include/linux/mailbox_controller.h
++F: include/dt-bindings/mailbox/
++F: Documentation/devicetree/bindings/mailbox/
++
++MAILBOX ARM MHUv2
++M: Viresh Kumar <viresh.kumar@linaro.org>
++M: Tushar Khandelwal <Tushar.Khandelwal@arm.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: drivers/mailbox/arm_mhuv2.c
++F: include/linux/mailbox/arm_mhuv2_message.h
++F: Documentation/devicetree/bindings/mailbox/arm,mhuv2.yaml
++
++MANAGEMENT COMPONENT TRANSPORT PROTOCOL (MCTP)
++M: Jeremy Kerr <jk@codeconstruct.com.au>
++M: Matt Johnston <matt@codeconstruct.com.au>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/networking/mctp.rst
++F: drivers/net/mctp/
++F: include/net/mctp.h
++F: include/net/mctpdevice.h
++F: include/net/netns/mctp.h
++F: net/mctp/
++
++MAN-PAGES: MANUAL PAGES FOR LINUX -- Sections 2, 3, 4, 5, and 7
++M: Michael Kerrisk <mtk.manpages@gmail.com>
++L: linux-man@vger.kernel.org
++S: Maintained
++W: http://www.kernel.org/doc/man-pages
++
++MARDUK (CREATOR CI40) DEVICE TREE SUPPORT
++M: Rahul Bedarkar <rahulbedarkar89@gmail.com>
++L: linux-mips@vger.kernel.org
++S: Maintained
++F: arch/mips/boot/dts/img/pistachio*
++
++MARVELL 88E6XXX ETHERNET SWITCH FABRIC DRIVER
++M: Andrew Lunn <andrew@lunn.ch>
++M: Vivien Didelot <vivien.didelot@gmail.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/dsa/marvell.txt
++F: Documentation/networking/devlink/mv88e6xxx.rst
++F: drivers/net/dsa/mv88e6xxx/
++F: include/linux/dsa/mv88e6xxx.h
++F: include/linux/platform_data/mv88e6xxx.h
++
++MARVELL ARMADA 3700 PHY DRIVERS
++M: Miquel Raynal <miquel.raynal@bootlin.com>
++S: Maintained
++F: Documentation/devicetree/bindings/phy/phy-mvebu-comphy.txt
++F: Documentation/devicetree/bindings/phy/marvell,armada-3700-utmi-phy.yaml
++F: drivers/phy/marvell/phy-mvebu-a3700-comphy.c
++F: drivers/phy/marvell/phy-mvebu-a3700-utmi.c
++
++MARVELL ARMADA DRM SUPPORT
++M: Russell King <linux@armlinux.org.uk>
++S: Maintained
++T: git git://git.armlinux.org.uk/~rmk/linux-arm.git drm-armada-devel
++T: git git://git.armlinux.org.uk/~rmk/linux-arm.git drm-armada-fixes
++F: Documentation/devicetree/bindings/display/armada/
++F: drivers/gpu/drm/armada/
++F: include/uapi/drm/armada_drm.h
++
++MARVELL CRYPTO DRIVER
++M: Boris Brezillon <bbrezillon@kernel.org>
++M: Arnaud Ebalard <arno@natisbad.org>
++M: Srujana Challa <schalla@marvell.com>
++L: linux-crypto@vger.kernel.org
++S: Maintained
++F: drivers/crypto/marvell/
++F: include/linux/soc/marvell/octeontx2/
++
++MARVELL GIGABIT ETHERNET DRIVERS (skge/sky2)
++M: Mirko Lindner <mlindner@marvell.com>
++M: Stephen Hemminger <stephen@networkplumber.org>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/marvell/sk*
++
++MARVELL LIBERTAS WIRELESS DRIVER
++L: libertas-dev@lists.infradead.org
++S: Orphan
++F: drivers/net/wireless/marvell/libertas/
++
++MARVELL MACCHIATOBIN SUPPORT
++M: Russell King <linux@armlinux.org.uk>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm64/boot/dts/marvell/armada-8040-mcbin.dts
++
++MARVELL MV643XX ETHERNET DRIVER
++M: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/marvell/mv643xx_eth.*
++F: include/linux/mv643xx.h
++
++MARVELL MV88X3310 PHY DRIVER
++M: Russell King <linux@armlinux.org.uk>
++M: Marek Behún <kabel@kernel.org>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/phy/marvell10g.c
++
++MARVELL MVEBU THERMAL DRIVER
++M: Miquel Raynal <miquel.raynal@bootlin.com>
++S: Maintained
++F: drivers/thermal/armada_thermal.c
++
++MARVELL MVNETA ETHERNET DRIVER
++M: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/marvell/mvneta.*
++
++MARVELL MVPP2 ETHERNET DRIVER
++M: Marcin Wojtas <mw@semihalf.com>
++M: Russell King <linux@armlinux.org.uk>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/marvell-pp2.txt
++F: drivers/net/ethernet/marvell/mvpp2/
++
++MARVELL MWIFIEX WIRELESS DRIVER
++M: Amitkumar Karwar <amitkarwar@gmail.com>
++M: Ganapathi Bhat <ganapathi017@gmail.com>
++M: Sharvari Harisangam <sharvari.harisangam@nxp.com>
++M: Xinming Hu <huxinming820@gmail.com>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++F: drivers/net/wireless/marvell/mwifiex/
++
++MARVELL MWL8K WIRELESS DRIVER
++M: Lennert Buytenhek <buytenh@wantstofly.org>
++L: linux-wireless@vger.kernel.org
++S: Odd Fixes
++F: drivers/net/wireless/marvell/mwl8k.c
++
++MARVELL NAND CONTROLLER DRIVER
++M: Miquel Raynal <miquel.raynal@bootlin.com>
++L: linux-mtd@lists.infradead.org
++S: Maintained
++F: Documentation/devicetree/bindings/mtd/marvell-nand.txt
++F: drivers/mtd/nand/raw/marvell_nand.c
++
++MARVELL OCTEONTX2 PHYSICAL FUNCTION DRIVER
++M: Sunil Goutham <sgoutham@marvell.com>
++M: Geetha sowjanya <gakula@marvell.com>
++M: Subbaraya Sundeep <sbhatta@marvell.com>
++M: hariprasad <hkelam@marvell.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/marvell/octeontx2/nic/
++F: include/linux/soc/marvell/octeontx2/
++
++MARVELL OCTEONTX2 RVU ADMIN FUNCTION DRIVER
++M: Sunil Goutham <sgoutham@marvell.com>
++M: Linu Cherian <lcherian@marvell.com>
++M: Geetha sowjanya <gakula@marvell.com>
++M: Jerin Jacob <jerinj@marvell.com>
++M: hariprasad <hkelam@marvell.com>
++M: Subbaraya Sundeep <sbhatta@marvell.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: Documentation/networking/device_drivers/ethernet/marvell/octeontx2.rst
++F: drivers/net/ethernet/marvell/octeontx2/af/
++
++MARVELL PRESTERA ETHERNET SWITCH DRIVER
++M: Taras Chornyi <tchornyi@marvell.com>
++S: Supported
++W: https://github.com/Marvell-switching/switchdev-prestera
++F: drivers/net/ethernet/marvell/prestera/
++
++MARVELL SOC MMC/SD/SDIO CONTROLLER DRIVER
++M: Nicolas Pitre <nico@fluxnic.net>
++S: Odd Fixes
++F: drivers/mmc/host/mvsdio.*
++
++MARVELL USB MDIO CONTROLLER DRIVER
++M: Tobias Waldekranz <tobias@waldekranz.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/marvell,mvusb.yaml
++F: drivers/net/mdio/mdio-mvusb.c
++
++MARVELL XENON MMC/SD/SDIO HOST CONTROLLER DRIVER
++M: Hu Ziji <huziji@marvell.com>
++L: linux-mmc@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/mmc/marvell,xenon-sdhci.txt
++F: drivers/mmc/host/sdhci-xenon*
++
++MATROX FRAMEBUFFER DRIVER
++L: linux-fbdev@vger.kernel.org
++S: Orphan
++F: drivers/video/fbdev/matrox/matroxfb_*
++F: include/uapi/linux/matroxfb.h
++
++MAX15301 DRIVER
++M: Daniel Nilsson <daniel.nilsson@flex.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/max15301.rst
++F: drivers/hwmon/pmbus/max15301.c
++
++MAX16065 HARDWARE MONITOR DRIVER
++M: Guenter Roeck <linux@roeck-us.net>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/max16065.rst
++F: drivers/hwmon/max16065.c
++
++MAX2175 SDR TUNER DRIVER
++M: Ramesh Shanmugasundaram <rashanmu@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/max2175.txt
++F: Documentation/userspace-api/media/drivers/max2175.rst
++F: drivers/media/i2c/max2175*
++F: include/uapi/linux/max2175.h
++
++MAX6650 HARDWARE MONITOR AND FAN CONTROLLER DRIVER
++L: linux-hwmon@vger.kernel.org
++S: Orphan
++F: Documentation/hwmon/max6650.rst
++F: drivers/hwmon/max6650.c
++
++MAX6697 HARDWARE MONITOR DRIVER
++M: Guenter Roeck <linux@roeck-us.net>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/hwmon/max6697.txt
++F: Documentation/hwmon/max6697.rst
++F: drivers/hwmon/max6697.c
++F: include/linux/platform_data/max6697.h
++
++MAX9286 QUAD GMSL DESERIALIZER DRIVER
++M: Jacopo Mondi <jacopo+renesas@jmondi.org>
++M: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
++M: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
++M: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
++F: drivers/media/i2c/max9286.c
++
++MAX9860 MONO AUDIO VOICE CODEC DRIVER
++M: Peter Rosin <peda@axentia.se>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/sound/max9860.txt
++F: sound/soc/codecs/max9860.*
++
++MAXBOTIX ULTRASONIC RANGER IIO DRIVER
++M: Andreas Klinger <ak@it-klinger.de>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/iio/proximity/maxbotix,mb1232.yaml
++F: drivers/iio/proximity/mb1232.c
++
++MAXIM MAX77650 PMIC MFD DRIVER
++M: Bartosz Golaszewski <brgl@bgdev.pl>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/*/*max77650.yaml
++F: Documentation/devicetree/bindings/*/max77650*.yaml
++F: drivers/gpio/gpio-max77650.c
++F: drivers/input/misc/max77650-onkey.c
++F: drivers/leds/leds-max77650.c
++F: drivers/mfd/max77650.c
++F: drivers/power/supply/max77650-charger.c
++F: drivers/regulator/max77650-regulator.c
++F: include/linux/mfd/max77650.h
++
++MAXIM MAX77802 PMIC REGULATOR DEVICE DRIVER
++M: Javier Martinez Canillas <javier@dowhile0.org>
++L: linux-kernel@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/*/*max77802.txt
++F: drivers/regulator/max77802-regulator.c
++F: include/dt-bindings/*/*max77802.h
++
++MAXIM MUIC CHARGER DRIVERS FOR EXYNOS BASED BOARDS
++M: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
++M: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
++L: linux-pm@vger.kernel.org
++S: Supported
++F: drivers/power/supply/max14577_charger.c
++F: drivers/power/supply/max77693_charger.c
++
++MAXIM PMIC AND MUIC DRIVERS FOR EXYNOS BASED BOARDS
++M: Chanwoo Choi <cw00.choi@samsung.com>
++M: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
++M: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
++L: linux-kernel@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/*/max77686.txt
++F: Documentation/devicetree/bindings/clock/maxim,max77686.txt
++F: Documentation/devicetree/bindings/mfd/max14577.txt
++F: Documentation/devicetree/bindings/mfd/max77693.txt
++F: drivers/*/max14577*.c
++F: drivers/*/max77686*.c
++F: drivers/*/max77693*.c
++F: drivers/clk/clk-max77686.c
++F: drivers/extcon/extcon-max14577.c
++F: drivers/extcon/extcon-max77693.c
++F: drivers/rtc/rtc-max77686.c
++F: include/linux/mfd/max14577*.h
++F: include/linux/mfd/max77686*.h
++F: include/linux/mfd/max77693*.h
++
++MAXIRADIO FM RADIO RECEIVER DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/radio-maxiradio*
++
++MAXLINEAR ETHERNET PHY DRIVER
++M: Xu Liang <lxu@maxlinear.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/phy/mxl-gpy.c
++
++MCBA MICROCHIP CAN BUS ANALYZER TOOL DRIVER
++R: Yasushi SHOJI <yashi@spacecubics.com>
++L: linux-can@vger.kernel.org
++S: Maintained
++F: drivers/net/can/usb/mcba_usb.c
++
++MCAN MMIO DEVICE DRIVER
++M: Chandrasekar Ramakrishnan <rcsekar@samsung.com>
++L: linux-can@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
++F: drivers/net/can/m_can/m_can.c
++F: drivers/net/can/m_can/m_can.h
++F: drivers/net/can/m_can/m_can_platform.c
++
++MCP2221A MICROCHIP USB-HID TO I2C BRIDGE DRIVER
++M: Rishi Gupta <gupt21@gmail.com>
++L: linux-i2c@vger.kernel.org
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/hid/hid-mcp2221.c
++
++MCP251XFD SPI-CAN NETWORK DRIVER
++M: Marc Kleine-Budde <mkl@pengutronix.de>
++M: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
++R: Thomas Kopp <thomas.kopp@microchip.com>
++L: linux-can@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/can/microchip,mcp251xfd.yaml
++F: drivers/net/can/spi/mcp251xfd/
++
++MCP4018 AND MCP4531 MICROCHIP DIGITAL POTENTIOMETER DRIVERS
++M: Peter Rosin <peda@axentia.se>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-bus-iio-potentiometer-mcp4531
++F: drivers/iio/potentiometer/mcp4018.c
++F: drivers/iio/potentiometer/mcp4531.c
++
++MCR20A IEEE-802.15.4 RADIO DRIVER
++M: Xue Liu <liuxuenetmail@gmail.com>
++L: linux-wpan@vger.kernel.org
++S: Maintained
++W: https://github.com/xueliu/mcr20a-linux
++F: Documentation/devicetree/bindings/net/ieee802154/mcr20a.txt
++F: drivers/net/ieee802154/mcr20a.c
++F: drivers/net/ieee802154/mcr20a.h
++
++MEASUREMENT COMPUTING CIO-DAC IIO DRIVER
++M: William Breathitt Gray <vilhelm.gray@gmail.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: drivers/iio/dac/cio-dac.c
++
++MEDIA CONTROLLER FRAMEWORK
++M: Sakari Ailus <sakari.ailus@linux.intel.com>
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++L: linux-media@vger.kernel.org
++S: Supported
++W: https://www.linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/mc/
++F: include/media/media-*.h
++F: include/uapi/linux/media.h
++
++MEDIA DRIVER FOR FREESCALE IMX PXP
++M: Philipp Zabel <p.zabel@pengutronix.de>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/platform/imx-pxp.[ch]
++
++MEDIA DRIVERS FOR ASCOT2E
++M: Sergey Kozlov <serjk@netup.ru>
++M: Abylay Ospan <aospan@netup.ru>
++L: linux-media@vger.kernel.org
++S: Supported
++W: https://linuxtv.org
++W: http://netup.tv/
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/dvb-frontends/ascot2e*
++
++MEDIA DRIVERS FOR CXD2099AR CI CONTROLLERS
++M: Jasmin Jessich <jasmin@anw.at>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/dvb-frontends/cxd2099*
++
++MEDIA DRIVERS FOR CXD2841ER
++M: Sergey Kozlov <serjk@netup.ru>
++M: Abylay Ospan <aospan@netup.ru>
++L: linux-media@vger.kernel.org
++S: Supported
++W: https://linuxtv.org
++W: http://netup.tv/
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/dvb-frontends/cxd2841er*
++
++MEDIA DRIVERS FOR CXD2880
++M: Yasunari Takiguchi <Yasunari.Takiguchi@sony.com>
++L: linux-media@vger.kernel.org
++S: Supported
++W: http://linuxtv.org/
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/dvb-frontends/cxd2880/*
++F: drivers/media/spi/cxd2880*
++
++MEDIA DRIVERS FOR DIGITAL DEVICES PCIE DEVICES
++L: linux-media@vger.kernel.org
++S: Orphan
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/pci/ddbridge/*
++
++MEDIA DRIVERS FOR FREESCALE IMX
++M: Steve Longerbeam <slongerbeam@gmail.com>
++M: Philipp Zabel <p.zabel@pengutronix.de>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/admin-guide/media/imx.rst
++F: Documentation/devicetree/bindings/media/imx.txt
++F: drivers/staging/media/imx/
++F: include/linux/imx-media.h
++F: include/media/imx.h
++
++MEDIA DRIVERS FOR FREESCALE IMX7
++M: Rui Miguel Silva <rmfrfs@gmail.com>
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/admin-guide/media/imx7.rst
++F: Documentation/devicetree/bindings/media/nxp,imx7-csi.yaml
++F: Documentation/devicetree/bindings/media/nxp,imx7-mipi-csi2.yaml
++F: drivers/staging/media/imx/imx7-media-csi.c
++F: drivers/staging/media/imx/imx7-mipi-csis.c
++
++MEDIA DRIVERS FOR HELENE
++M: Abylay Ospan <aospan@netup.ru>
++L: linux-media@vger.kernel.org
++S: Supported
++W: https://linuxtv.org
++W: http://netup.tv/
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/dvb-frontends/helene*
++
++MEDIA DRIVERS FOR HORUS3A
++M: Sergey Kozlov <serjk@netup.ru>
++M: Abylay Ospan <aospan@netup.ru>
++L: linux-media@vger.kernel.org
++S: Supported
++W: https://linuxtv.org
++W: http://netup.tv/
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/dvb-frontends/horus3a*
++
++MEDIA DRIVERS FOR LNBH25
++M: Sergey Kozlov <serjk@netup.ru>
++M: Abylay Ospan <aospan@netup.ru>
++L: linux-media@vger.kernel.org
++S: Supported
++W: https://linuxtv.org
++W: http://netup.tv/
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/dvb-frontends/lnbh25*
++
++MEDIA DRIVERS FOR MXL5XX TUNER DEMODULATORS
++L: linux-media@vger.kernel.org
++S: Orphan
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/dvb-frontends/mxl5xx*
++
++MEDIA DRIVERS FOR NETUP PCI UNIVERSAL DVB devices
++M: Sergey Kozlov <serjk@netup.ru>
++M: Abylay Ospan <aospan@netup.ru>
++L: linux-media@vger.kernel.org
++S: Supported
++W: https://linuxtv.org
++W: http://netup.tv/
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/pci/netup_unidvb/*
++
++MEDIA DRIVERS FOR NVIDIA TEGRA - VDE
++M: Dmitry Osipenko <digetx@gmail.com>
++L: linux-media@vger.kernel.org
++L: linux-tegra@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/nvidia,tegra-vde.txt
++F: drivers/staging/media/tegra-vde/
++
++MEDIA DRIVERS FOR RENESAS - CEU
++M: Jacopo Mondi <jacopo@jmondi.org>
++L: linux-media@vger.kernel.org
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/renesas,ceu.yaml
++F: drivers/media/platform/renesas-ceu.c
++F: include/media/drv-intf/renesas-ceu.h
++
++MEDIA DRIVERS FOR RENESAS - DRIF
++M: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
++L: linux-media@vger.kernel.org
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/renesas,drif.yaml
++F: drivers/media/platform/rcar_drif.c
++
++MEDIA DRIVERS FOR RENESAS - FCP
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++L: linux-media@vger.kernel.org
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/renesas,fcp.yaml
++F: drivers/media/platform/rcar-fcp.c
++F: include/media/rcar-fcp.h
++
++MEDIA DRIVERS FOR RENESAS - FDP1
++M: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
++L: linux-media@vger.kernel.org
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/renesas,fdp1.yaml
++F: drivers/media/platform/rcar_fdp1.c
++
++MEDIA DRIVERS FOR RENESAS - VIN
++M: Niklas Söderlund <niklas.soderlund@ragnatech.se>
++L: linux-media@vger.kernel.org
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/renesas,csi2.yaml
++F: Documentation/devicetree/bindings/media/renesas,isp.yaml
++F: Documentation/devicetree/bindings/media/renesas,vin.yaml
++F: drivers/media/platform/rcar-vin/
++
++MEDIA DRIVERS FOR RENESAS - VSP1
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++M: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
++L: linux-media@vger.kernel.org
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/renesas,vsp1.yaml
++F: drivers/media/platform/vsp1/
++
++MEDIA DRIVERS FOR ST STV0910 DEMODULATOR ICs
++L: linux-media@vger.kernel.org
++S: Orphan
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/dvb-frontends/stv0910*
++
++MEDIA DRIVERS FOR ST STV6111 TUNER ICs
++L: linux-media@vger.kernel.org
++S: Orphan
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/dvb-frontends/stv6111*
++
++MEDIA DRIVERS FOR STM32 - DCMI
++M: Hugues Fruchet <hugues.fruchet@foss.st.com>
++L: linux-media@vger.kernel.org
++S: Supported
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml
++F: drivers/media/platform/stm32/stm32-dcmi.c
++
++MEDIA INPUT INFRASTRUCTURE (V4L/DVB)
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++Q: http://patchwork.kernel.org/project/linux-media/list/
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/admin-guide/media/
++F: Documentation/devicetree/bindings/media/
++F: Documentation/driver-api/media/
++F: Documentation/userspace-api/media/
++F: drivers/media/
++F: drivers/staging/media/
++F: include/linux/platform_data/media/
++F: include/media/
++F: include/uapi/linux/dvb/
++F: include/uapi/linux/ivtv*
++F: include/uapi/linux/media.h
++F: include/uapi/linux/meye.h
++F: include/uapi/linux/uvcvideo.h
++F: include/uapi/linux/v4l2-*
++F: include/uapi/linux/videodev2.h
++
++MEDIATEK BLUETOOTH DRIVER
++M: Sean Wang <sean.wang@mediatek.com>
++L: linux-bluetooth@vger.kernel.org
++L: linux-mediatek@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/net/mediatek-bluetooth.txt
++F: drivers/bluetooth/btmtkuart.c
++
++MEDIATEK BOARD LEVEL SHUTDOWN DRIVERS
++M: Sean Wang <sean.wang@mediatek.com>
++L: linux-pm@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/power/reset/mt6323-poweroff.txt
++F: drivers/power/reset/mt6323-poweroff.c
++
++MEDIATEK CIR DRIVER
++M: Sean Wang <sean.wang@mediatek.com>
++S: Maintained
++F: drivers/media/rc/mtk-cir.c
++
++MEDIATEK DMA DRIVER
++M: Sean Wang <sean.wang@mediatek.com>
++L: dmaengine@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-mediatek@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/dma/mtk-*
++F: drivers/dma/mediatek/
++
++MEDIATEK ETHERNET DRIVER
++M: Felix Fietkau <nbd@nbd.name>
++M: John Crispin <john@phrozen.org>
++M: Sean Wang <sean.wang@mediatek.com>
++M: Mark Lee <Mark-MC.Lee@mediatek.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/mediatek/
++
++MEDIATEK I2C CONTROLLER DRIVER
++M: Qii Wang <qii.wang@mediatek.com>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt
++F: drivers/i2c/busses/i2c-mt65xx.c
++
++MEDIATEK IOMMU DRIVER
++M: Yong Wu <yong.wu@mediatek.com>
++L: iommu@lists.linux-foundation.org
++L: linux-mediatek@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++F: Documentation/devicetree/bindings/iommu/mediatek*
++F: drivers/iommu/mtk_iommu*
++F: include/dt-bindings/memory/mt*-port.h
++
++MEDIATEK JPEG DRIVER
++M: Rick Chang <rick.chang@mediatek.com>
++M: Bin Liu <bin.liu@mediatek.com>
++S: Supported
++F: Documentation/devicetree/bindings/media/mediatek-jpeg-decoder.txt
++F: drivers/media/platform/mtk-jpeg/
++
++MEDIATEK MDP DRIVER
++M: Minghsiu Tsai <minghsiu.tsai@mediatek.com>
++M: Houlong Wei <houlong.wei@mediatek.com>
++M: Andrew-CT Chen <andrew-ct.chen@mediatek.com>
++S: Supported
++F: Documentation/devicetree/bindings/media/mediatek-mdp.txt
++F: drivers/media/platform/mtk-mdp/
++F: drivers/media/platform/mtk-vpu/
++
++MEDIATEK MEDIA DRIVER
++M: Tiffany Lin <tiffany.lin@mediatek.com>
++M: Andrew-CT Chen <andrew-ct.chen@mediatek.com>
++S: Supported
++F: Documentation/devicetree/bindings/media/mediatek-vcodec.txt
++F: Documentation/devicetree/bindings/media/mediatek-vpu.txt
++F: drivers/media/platform/mtk-vcodec/
++F: drivers/media/platform/mtk-vpu/
++
++MEDIATEK MMC/SD/SDIO DRIVER
++M: Chaotian Jing <chaotian.jing@mediatek.com>
++S: Maintained
++F: Documentation/devicetree/bindings/mmc/mtk-sd.yaml
++F: drivers/mmc/host/mtk-sd.c
++
++MEDIATEK MT76 WIRELESS LAN DRIVER
++M: Felix Fietkau <nbd@nbd.name>
++M: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
++R: Ryder Lee <ryder.lee@mediatek.com>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++F: drivers/net/wireless/mediatek/mt76/
++
++MEDIATEK MT7601U WIRELESS LAN DRIVER
++M: Jakub Kicinski <kubakici@wp.pl>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++F: drivers/net/wireless/mediatek/mt7601u/
++
++MEDIATEK MT7621 CLOCK DRIVER
++M: Sergio Paracuellos <sergio.paracuellos@gmail.com>
++S: Maintained
++F: Documentation/devicetree/bindings/clock/mediatek,mt7621-sysc.yaml
++F: drivers/clk/ralink/clk-mt7621.c
++
++MEDIATEK MT7621/28/88 I2C DRIVER
++M: Stefan Roese <sr@denx.de>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/i2c/i2c-mt7621.txt
++F: drivers/i2c/busses/i2c-mt7621.c
++
++MEDIATEK MT7621 PHY PCI DRIVER
++M: Sergio Paracuellos <sergio.paracuellos@gmail.com>
++S: Maintained
++F: Documentation/devicetree/bindings/phy/mediatek,mt7621-pci-phy.yaml
++F: drivers/phy/ralink/phy-mt7621-pci.c
++
++MEDIATEK NAND CONTROLLER DRIVER
++L: linux-mtd@lists.infradead.org
++S: Orphan
++F: Documentation/devicetree/bindings/mtd/mtk-nand.txt
++F: drivers/mtd/nand/raw/mtk_*
++
++MEDIATEK PMIC LED DRIVER
++M: Sean Wang <sean.wang@mediatek.com>
++S: Maintained
++F: Documentation/devicetree/bindings/leds/leds-mt6323.txt
++F: drivers/leds/leds-mt6323.c
++
++MEDIATEK RANDOM NUMBER GENERATOR SUPPORT
++M: Sean Wang <sean.wang@mediatek.com>
++S: Maintained
++F: drivers/char/hw_random/mtk-rng.c
++
++MEDIATEK SWITCH DRIVER
++M: Sean Wang <sean.wang@mediatek.com>
++M: Landen Chao <Landen.Chao@mediatek.com>
++M: DENG Qingfang <dqfext@gmail.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/dsa/mt7530.*
++F: net/dsa/tag_mtk.c
++
++MEDIATEK USB3 DRD IP DRIVER
++M: Chunfeng Yun <chunfeng.yun@mediatek.com>
++L: linux-usb@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-mediatek@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/usb/mediatek,*
++F: drivers/usb/host/xhci-mtk*
++F: drivers/usb/mtu3/
++
++MEGACHIPS STDPXXXX-GE-B850V3-FW LVDS/DP++ BRIDGES
++M: Peter Senna Tschudin <peter.senna@gmail.com>
++M: Martin Donnelly <martin.donnelly@ge.com>
++M: Martyn Welch <martyn.welch@collabora.co.uk>
++S: Maintained
++F: Documentation/devicetree/bindings/display/bridge/megachips-stdpxxxx-ge-b850v3-fw.txt
++F: drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c
++
++MEGARAID SCSI/SAS DRIVERS
++M: Kashyap Desai <kashyap.desai@broadcom.com>
++M: Sumit Saxena <sumit.saxena@broadcom.com>
++M: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
++L: megaraidlinux.pdl@broadcom.com
++L: linux-scsi@vger.kernel.org
++S: Maintained
++W: http://www.avagotech.com/support/
++F: Documentation/scsi/megaraid.rst
++F: drivers/scsi/megaraid.*
++F: drivers/scsi/megaraid/
++
++MELEXIS MLX90614 DRIVER
++M: Crt Mori <cmo@melexis.com>
++L: linux-iio@vger.kernel.org
++S: Supported
++W: http://www.melexis.com
++F: drivers/iio/temperature/mlx90614.c
++
++MELEXIS MLX90632 DRIVER
++M: Crt Mori <cmo@melexis.com>
++L: linux-iio@vger.kernel.org
++S: Supported
++W: http://www.melexis.com
++F: drivers/iio/temperature/mlx90632.c
++
++MELFAS MIP4 TOUCHSCREEN DRIVER
++M: Sangwon Jee <jeesw@melfas.com>
++S: Supported
++W: http://www.melfas.com
++F: Documentation/devicetree/bindings/input/touchscreen/melfas_mip4.txt
++F: drivers/input/touchscreen/melfas_mip4.c
++
++MELLANOX BLUEFIELD I2C DRIVER
++M: Khalil Blaiech <kblaiech@nvidia.com>
++L: linux-i2c@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/i2c/mellanox,i2c-mlxbf.yaml
++F: drivers/i2c/busses/i2c-mlxbf.c
++
++MELLANOX ETHERNET DRIVER (mlx4_en)
++M: Tariq Toukan <tariqt@nvidia.com>
++L: netdev@vger.kernel.org
++S: Supported
++W: http://www.mellanox.com
++Q: https://patchwork.kernel.org/project/netdevbpf/list/
++F: drivers/net/ethernet/mellanox/mlx4/en_*
++
++MELLANOX ETHERNET DRIVER (mlx5e)
++M: Saeed Mahameed <saeedm@nvidia.com>
++L: netdev@vger.kernel.org
++S: Supported
++W: http://www.mellanox.com
++Q: https://patchwork.kernel.org/project/netdevbpf/list/
++F: drivers/net/ethernet/mellanox/mlx5/core/en_*
++
++MELLANOX ETHERNET INNOVA DRIVERS
++R: Boris Pismenny <borisp@nvidia.com>
++L: netdev@vger.kernel.org
++S: Supported
++W: http://www.mellanox.com
++Q: https://patchwork.kernel.org/project/netdevbpf/list/
++F: drivers/net/ethernet/mellanox/mlx5/core/accel/*
++F: drivers/net/ethernet/mellanox/mlx5/core/en_accel/*
++F: drivers/net/ethernet/mellanox/mlx5/core/fpga/*
++F: include/linux/mlx5/mlx5_ifc_fpga.h
++
++MELLANOX ETHERNET SWITCH DRIVERS
++M: Jiri Pirko <jiri@nvidia.com>
++M: Ido Schimmel <idosch@nvidia.com>
++L: netdev@vger.kernel.org
++S: Supported
++W: http://www.mellanox.com
++Q: https://patchwork.kernel.org/project/netdevbpf/list/
++F: drivers/net/ethernet/mellanox/mlxsw/
++F: tools/testing/selftests/drivers/net/mlxsw/
++
++MELLANOX FIRMWARE FLASH LIBRARY (mlxfw)
++M: mlxsw@nvidia.com
++L: netdev@vger.kernel.org
++S: Supported
++W: http://www.mellanox.com
++Q: https://patchwork.kernel.org/project/netdevbpf/list/
++F: drivers/net/ethernet/mellanox/mlxfw/
++
++MELLANOX HARDWARE PLATFORM SUPPORT
++M: Hans de Goede <hdegoede@redhat.com>
++M: Mark Gross <mgross@linux.intel.com>
++M: Vadim Pasternak <vadimp@nvidia.com>
++L: platform-driver-x86@vger.kernel.org
++S: Supported
++F: Documentation/ABI/testing/sysfs-platform-mellanox-bootctl
++F: drivers/platform/mellanox/
++F: include/linux/platform_data/mlxreg.h
++
++MELLANOX MLX4 core VPI driver
++M: Tariq Toukan <tariqt@nvidia.com>
++L: netdev@vger.kernel.org
++L: linux-rdma@vger.kernel.org
++S: Supported
++W: http://www.mellanox.com
++Q: https://patchwork.kernel.org/project/netdevbpf/list/
++F: drivers/net/ethernet/mellanox/mlx4/
++F: include/linux/mlx4/
++
++MELLANOX MLX4 IB driver
++M: Yishai Hadas <yishaih@nvidia.com>
++L: linux-rdma@vger.kernel.org
++S: Supported
++W: http://www.mellanox.com
++Q: http://patchwork.kernel.org/project/linux-rdma/list/
++F: drivers/infiniband/hw/mlx4/
++F: include/linux/mlx4/
++F: include/uapi/rdma/mlx4-abi.h
++
++MELLANOX MLX5 core VPI driver
++M: Saeed Mahameed <saeedm@nvidia.com>
++M: Leon Romanovsky <leonro@nvidia.com>
++L: netdev@vger.kernel.org
++L: linux-rdma@vger.kernel.org
++S: Supported
++W: http://www.mellanox.com
++Q: https://patchwork.kernel.org/project/netdevbpf/list/
++F: Documentation/networking/device_drivers/ethernet/mellanox/
++F: drivers/net/ethernet/mellanox/mlx5/core/
++F: include/linux/mlx5/
++
++MELLANOX MLX5 IB driver
++M: Leon Romanovsky <leonro@nvidia.com>
++L: linux-rdma@vger.kernel.org
++S: Supported
++W: http://www.mellanox.com
++Q: http://patchwork.kernel.org/project/linux-rdma/list/
++F: drivers/infiniband/hw/mlx5/
++F: include/linux/mlx5/
++F: include/uapi/rdma/mlx5-abi.h
++
++MELLANOX MLXCPLD I2C AND MUX DRIVER
++M: Vadim Pasternak <vadimp@nvidia.com>
++M: Michael Shych <michaelsh@nvidia.com>
++L: linux-i2c@vger.kernel.org
++S: Supported
++F: Documentation/i2c/busses/i2c-mlxcpld.rst
++F: drivers/i2c/busses/i2c-mlxcpld.c
++F: drivers/i2c/muxes/i2c-mux-mlxcpld.c
++
++MELLANOX MLXCPLD LED DRIVER
++M: Vadim Pasternak <vadimp@nvidia.com>
++L: linux-leds@vger.kernel.org
++S: Supported
++F: Documentation/leds/leds-mlxcpld.rst
++F: drivers/leds/leds-mlxcpld.c
++F: drivers/leds/leds-mlxreg.c
++
++MELLANOX PLATFORM DRIVER
++M: Vadim Pasternak <vadimp@nvidia.com>
++L: platform-driver-x86@vger.kernel.org
++S: Supported
++F: drivers/platform/x86/mlx-platform.c
++
++MEMBARRIER SUPPORT
++M: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
++M: "Paul E. McKenney" <paulmck@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Supported
++F: arch/powerpc/include/asm/membarrier.h
++F: include/uapi/linux/membarrier.h
++F: kernel/sched/membarrier.c
++
++MEMBLOCK
++M: Mike Rapoport <rppt@linux.ibm.com>
++L: linux-mm@kvack.org
++S: Maintained
++F: Documentation/core-api/boot-time-mm.rst
++F: include/linux/memblock.h
++F: mm/memblock.c
++
++MEMORY CONTROLLER DRIVERS
++M: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl.git
++F: Documentation/devicetree/bindings/memory-controllers/
++F: drivers/memory/
++F: include/dt-bindings/memory/
++F: include/memory/
++
++MEMORY FREQUENCY SCALING DRIVERS FOR NVIDIA TEGRA
++M: Dmitry Osipenko <digetx@gmail.com>
++L: linux-pm@vger.kernel.org
++L: linux-tegra@vger.kernel.org
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git
++S: Maintained
++F: drivers/devfreq/tegra30-devfreq.c
++
++MEMORY MANAGEMENT
++M: Andrew Morton <akpm@linux-foundation.org>
++L: linux-mm@kvack.org
++S: Maintained
++W: http://www.linux-mm.org
++T: quilt https://ozlabs.org/~akpm/mmotm/
++T: quilt https://ozlabs.org/~akpm/mmots/
++T: git git://github.com/hnaz/linux-mm.git
++F: include/linux/gfp.h
++F: include/linux/memory_hotplug.h
++F: include/linux/mm.h
++F: include/linux/mmzone.h
++F: include/linux/pagewalk.h
++F: include/linux/vmalloc.h
++F: mm/
++F: tools/testing/selftests/vm/
++
++MEMORY TECHNOLOGY DEVICES (MTD)
++M: Miquel Raynal <miquel.raynal@bootlin.com>
++M: Richard Weinberger <richard@nod.at>
++M: Vignesh Raghavendra <vigneshr@ti.com>
++L: linux-mtd@lists.infradead.org
++S: Maintained
++W: http://www.linux-mtd.infradead.org/
++Q: http://patchwork.ozlabs.org/project/linux-mtd/list/
++C: irc://irc.oftc.net/mtd
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git mtd/fixes
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git mtd/next
++F: Documentation/devicetree/bindings/mtd/
++F: drivers/mtd/
++F: include/linux/mtd/
++F: include/uapi/mtd/
++
++MEN A21 WATCHDOG DRIVER
++M: Johannes Thumshirn <morbidrsa@gmail.com>
++L: linux-watchdog@vger.kernel.org
++S: Maintained
++F: drivers/watchdog/mena21_wdt.c
++
++MEN CHAMELEON BUS (mcb)
++M: Johannes Thumshirn <morbidrsa@gmail.com>
++S: Maintained
++F: Documentation/driver-api/men-chameleon-bus.rst
++F: drivers/mcb/
++F: include/linux/mcb.h
++
++MEN F21BMC (Board Management Controller)
++M: Andreas Werner <andreas.werner@men.de>
++S: Supported
++F: Documentation/hwmon/menf21bmc.rst
++F: drivers/hwmon/menf21bmc_hwmon.c
++F: drivers/leds/leds-menf21bmc.c
++F: drivers/mfd/menf21bmc.c
++F: drivers/watchdog/menf21bmc_wdt.c
++
++MEN Z069 WATCHDOG DRIVER
++M: Johannes Thumshirn <jth@kernel.org>
++L: linux-watchdog@vger.kernel.org
++S: Maintained
++F: drivers/watchdog/menz69_wdt.c
++
++MESON AO CEC DRIVER FOR AMLOGIC SOCS
++M: Neil Armstrong <narmstrong@baylibre.com>
++L: linux-media@vger.kernel.org
++L: linux-amlogic@lists.infradead.org
++S: Supported
++W: http://linux-meson.com/
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/amlogic,meson-gx-ao-cec.yaml
++F: drivers/media/cec/platform/meson/ao-cec-g12a.c
++F: drivers/media/cec/platform/meson/ao-cec.c
++
++MESON GE2D DRIVER FOR AMLOGIC SOCS
++M: Neil Armstrong <narmstrong@baylibre.com>
++L: linux-media@vger.kernel.org
++L: linux-amlogic@lists.infradead.org
++S: Supported
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/amlogic,axg-ge2d.yaml
++F: drivers/media/platform/meson/ge2d/
++
++MESON NAND CONTROLLER DRIVER FOR AMLOGIC SOCS
++M: Liang Yang <liang.yang@amlogic.com>
++L: linux-mtd@lists.infradead.org
++S: Maintained
++F: Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
++F: drivers/mtd/nand/raw/meson_*
++
++MESON VIDEO DECODER DRIVER FOR AMLOGIC SOCS
++M: Neil Armstrong <narmstrong@baylibre.com>
++L: linux-media@vger.kernel.org
++L: linux-amlogic@lists.infradead.org
++S: Supported
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/amlogic,gx-vdec.yaml
++F: drivers/staging/media/meson/vdec/
++
++METHODE UDPU SUPPORT
++M: Vladimir Vid <vladimir.vid@sartura.hr>
++S: Maintained
++F: arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts
++
++MHI BUS
++M: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
++M: Hemant Kumar <hemantk@codeaurora.org>
++L: linux-arm-msm@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi.git
++F: Documentation/ABI/stable/sysfs-bus-mhi
++F: Documentation/mhi/
++F: drivers/bus/mhi/
++F: include/linux/mhi.h
++
++MICROBLAZE ARCHITECTURE
++M: Michal Simek <monstr@monstr.eu>
++S: Supported
++W: http://www.monstr.eu/fdt/
++T: git git://git.monstr.eu/linux-2.6-microblaze.git
++F: arch/microblaze/
++
++MICROCHIP AT91 DMA DRIVERS
++M: Ludovic Desroches <ludovic.desroches@microchip.com>
++M: Tudor Ambarus <tudor.ambarus@microchip.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: dmaengine@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/dma/atmel-dma.txt
++F: drivers/dma/at_hdmac.c
++F: drivers/dma/at_hdmac_regs.h
++F: drivers/dma/at_xdmac.c
++F: include/dt-bindings/dma/at91.h
++
++MICROCHIP AT91 SERIAL DRIVER
++M: Richard Genoud <richard.genoud@gmail.com>
++S: Maintained
++F: Documentation/devicetree/bindings/mfd/atmel-usart.txt
++F: drivers/tty/serial/atmel_serial.c
++F: drivers/tty/serial/atmel_serial.h
++
++MICROCHIP AT91 USART MFD DRIVER
++M: Radu Pirea <radu_nicolae.pirea@upb.ro>
++L: linux-kernel@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/mfd/atmel-usart.txt
++F: drivers/mfd/at91-usart.c
++F: include/dt-bindings/mfd/at91-usart.h
++
++MICROCHIP AT91 USART SPI DRIVER
++M: Radu Pirea <radu_nicolae.pirea@upb.ro>
++L: linux-spi@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/mfd/atmel-usart.txt
++F: drivers/spi/spi-at91-usart.c
++
++MICROCHIP AUDIO ASOC DRIVERS
++M: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Supported
++F: sound/soc/atmel
++
++MICROCHIP ECC DRIVER
++M: Tudor Ambarus <tudor.ambarus@microchip.com>
++L: linux-crypto@vger.kernel.org
++S: Maintained
++F: drivers/crypto/atmel-ecc.*
++
++MICROCHIP I2C DRIVER
++M: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
++L: linux-i2c@vger.kernel.org
++S: Supported
++F: drivers/i2c/busses/i2c-at91-*.c
++F: drivers/i2c/busses/i2c-at91.h
++
++MICROCHIP ISC DRIVER
++M: Eugen Hristev <eugen.hristev@microchip.com>
++L: linux-media@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/media/atmel,isc.yaml
++F: Documentation/devicetree/bindings/media/microchip,xisc.yaml
++F: drivers/media/platform/atmel/atmel-isc-base.c
++F: drivers/media/platform/atmel/atmel-isc-regs.h
++F: drivers/media/platform/atmel/atmel-isc.h
++F: drivers/media/platform/atmel/atmel-sama5d2-isc.c
++F: drivers/media/platform/atmel/atmel-sama7g5-isc.c
++F: include/linux/atmel-isc-media.h
++
++MICROCHIP ISI DRIVER
++M: Eugen Hristev <eugen.hristev@microchip.com>
++L: linux-media@vger.kernel.org
++S: Supported
++F: drivers/media/platform/atmel/atmel-isi.c
++F: drivers/media/platform/atmel/atmel-isi.h
++
++MICROCHIP KSZ SERIES ETHERNET SWITCH DRIVER
++M: Woojung Huh <woojung.huh@microchip.com>
++M: UNGLinuxDriver@microchip.com
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml
++F: drivers/net/dsa/microchip/*
++F: include/linux/platform_data/microchip-ksz.h
++F: net/dsa/tag_ksz.c
++
++MICROCHIP LAN743X ETHERNET DRIVER
++M: Bryan Whitehead <bryan.whitehead@microchip.com>
++M: UNGLinuxDriver@microchip.com
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/microchip/lan743x_*
++
++MICROCHIP LCDFB DRIVER
++M: Nicolas Ferre <nicolas.ferre@microchip.com>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++F: drivers/video/fbdev/atmel_lcdfb.c
++F: include/video/atmel_lcdc.h
++
++MICROCHIP MCP16502 PMIC DRIVER
++M: Claudiu Beznea <claudiu.beznea@microchip.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++F: Documentation/devicetree/bindings/regulator/mcp16502-regulator.txt
++F: drivers/regulator/mcp16502.c
++
++MICROCHIP MCP3911 ADC DRIVER
++M: Marcus Folkesson <marcus.folkesson@gmail.com>
++M: Kent Gustavsson <kent@minoris.se>
++L: linux-iio@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml
++F: drivers/iio/adc/mcp3911.c
++
++MICROCHIP MMC/SD/SDIO MCI DRIVER
++M: Ludovic Desroches <ludovic.desroches@microchip.com>
++S: Maintained
++F: drivers/mmc/host/atmel-mci.c
++
++MICROCHIP NAND DRIVER
++M: Tudor Ambarus <tudor.ambarus@microchip.com>
++L: linux-mtd@lists.infradead.org
++S: Supported
++F: Documentation/devicetree/bindings/mtd/atmel-nand.txt
++F: drivers/mtd/nand/raw/atmel/*
++
++MICROCHIP PWM DRIVER
++M: Claudiu Beznea <claudiu.beznea@microchip.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-pwm@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/pwm/atmel-pwm.txt
++F: drivers/pwm/pwm-atmel.c
++
++MICROCHIP SAMA5D2-COMPATIBLE ADC DRIVER
++M: Eugen Hristev <eugen.hristev@microchip.com>
++L: linux-iio@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/iio/adc/atmel,sama5d2-adc.yaml
++F: drivers/iio/adc/at91-sama5d2_adc.c
++F: include/dt-bindings/iio/adc/at91-sama5d2_adc.h
++
++MICROCHIP SAMA5D2-COMPATIBLE SHUTDOWN CONTROLLER
++M: Claudiu Beznea <claudiu.beznea@microchip.com>
++S: Supported
++F: drivers/power/reset/at91-sama5d2_shdwc.c
++
++MICROCHIP SPI DRIVER
++M: Tudor Ambarus <tudor.ambarus@microchip.com>
++S: Supported
++F: drivers/spi/spi-atmel.*
++
++MICROCHIP SSC DRIVER
++M: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++F: drivers/misc/atmel-ssc.c
++F: include/linux/atmel-ssc.h
++
++MICROCHIP USB251XB DRIVER
++M: Richard Leitner <richard.leitner@skidata.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/usb/usb251xb.txt
++F: drivers/usb/misc/usb251xb.c
++
++MICROCHIP USBA UDC DRIVER
++M: Cristian Birsan <cristian.birsan@microchip.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++F: drivers/usb/gadget/udc/atmel_usba_udc.*
++
++MICROCHIP WILC1000 WIFI DRIVER
++M: Ajay Singh <ajay.kathat@microchip.com>
++M: Claudiu Beznea <claudiu.beznea@microchip.com>
++L: linux-wireless@vger.kernel.org
++S: Supported
++F: drivers/net/wireless/microchip/wilc1000/
++
++MICROSEMI MIPS SOCS
++M: Alexandre Belloni <alexandre.belloni@bootlin.com>
++M: UNGLinuxDriver@microchip.com
++L: linux-mips@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/mips/mscc.txt
++F: Documentation/devicetree/bindings/power/reset/ocelot-reset.txt
++F: arch/mips/boot/dts/mscc/
++F: arch/mips/configs/generic/board-ocelot.config
++F: arch/mips/generic/board-ocelot.c
++
++MICROSEMI SMART ARRAY SMARTPQI DRIVER (smartpqi)
++M: Don Brace <don.brace@microchip.com>
++L: storagedev@microchip.com
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: Documentation/scsi/smartpqi.rst
++F: drivers/scsi/smartpqi/Kconfig
++F: drivers/scsi/smartpqi/Makefile
++F: drivers/scsi/smartpqi/smartpqi*.[ch]
++F: include/linux/cciss*.h
++F: include/uapi/linux/cciss*.h
++
++MICROSOFT SURFACE BATTERY AND AC DRIVERS
++M: Maximilian Luz <luzmaximilian@gmail.com>
++L: linux-pm@vger.kernel.org
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/power/supply/surface_battery.c
++F: drivers/power/supply/surface_charger.c
++
++MICROSOFT SURFACE DTX DRIVER
++M: Maximilian Luz <luzmaximilian@gmail.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: Documentation/driver-api/surface_aggregator/clients/dtx.rst
++F: drivers/platform/surface/surface_dtx.c
++F: include/uapi/linux/surface_aggregator/dtx.h
++
++MICROSOFT SURFACE GPE LID SUPPORT DRIVER
++M: Maximilian Luz <luzmaximilian@gmail.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/surface/surface_gpe.c
++
++MICROSOFT SURFACE HARDWARE PLATFORM SUPPORT
++M: Hans de Goede <hdegoede@redhat.com>
++M: Mark Gross <mgross@linux.intel.com>
++M: Maximilian Luz <luzmaximilian@gmail.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git
++F: drivers/platform/surface/
++
++MICROSOFT SURFACE HID TRANSPORT DRIVER
++M: Maximilian Luz <luzmaximilian@gmail.com>
++L: linux-input@vger.kernel.org
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/hid/surface-hid/
++
++MICROSOFT SURFACE HOT-PLUG DRIVER
++M: Maximilian Luz <luzmaximilian@gmail.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/surface/surface_hotplug.c
++
++MICROSOFT SURFACE PLATFORM PROFILE DRIVER
++M: Maximilian Luz <luzmaximilian@gmail.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/surface/surface_platform_profile.c
++
++MICROSOFT SURFACE PRO 3 BUTTON DRIVER
++M: Chen Yu <yu.c.chen@intel.com>
++L: platform-driver-x86@vger.kernel.org
++S: Supported
++F: drivers/platform/surface/surfacepro3_button.c
++
++MICROSOFT SURFACE SYSTEM AGGREGATOR SUBSYSTEM
++M: Maximilian Luz <luzmaximilian@gmail.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++W: https://github.com/linux-surface/surface-aggregator-module
++C: irc://irc.libera.chat/linux-surface
++F: Documentation/driver-api/surface_aggregator/
++F: drivers/platform/surface/aggregator/
++F: drivers/platform/surface/surface_acpi_notify.c
++F: drivers/platform/surface/surface_aggregator_cdev.c
++F: drivers/platform/surface/surface_aggregator_registry.c
++F: include/linux/surface_acpi_notify.h
++F: include/linux/surface_aggregator/
++F: include/uapi/linux/surface_aggregator/
++
++MICROTEK X6 SCANNER
++M: Oliver Neukum <oliver@neukum.org>
++S: Maintained
++F: drivers/usb/image/microtek.*
++
++MIKROTIK CRS3XX 98DX3236 BOARD SUPPORT
++M: Luka Kovacic <luka.kovacic@sartura.hr>
++M: Luka Perkov <luka.perkov@sartura.hr>
++S: Maintained
++F: arch/arm/boot/dts/armada-xp-crs305-1g-4s-bit.dts
++F: arch/arm/boot/dts/armada-xp-crs305-1g-4s.dts
++F: arch/arm/boot/dts/armada-xp-crs326-24g-2s-bit.dts
++F: arch/arm/boot/dts/armada-xp-crs326-24g-2s.dts
++F: arch/arm/boot/dts/armada-xp-crs328-4c-20s-4s-bit.dts
++F: arch/arm/boot/dts/armada-xp-crs328-4c-20s-4s.dts
++
++MIPI CCS, SMIA AND SMIA++ IMAGE SENSOR DRIVER
++M: Sakari Ailus <sakari.ailus@linux.intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/media/i2c/mipi-ccs.yaml
++F: Documentation/driver-api/media/drivers/ccs/
++F: Documentation/userspace-api/media/drivers/ccs.rst
++F: drivers/media/i2c/ccs-pll.c
++F: drivers/media/i2c/ccs-pll.h
++F: drivers/media/i2c/ccs/
++F: include/uapi/linux/ccs.h
++F: include/uapi/linux/smiapp.h
++
++MIPS
++M: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
++L: linux-mips@vger.kernel.org
++S: Maintained
++W: http://www.linux-mips.org/
++Q: https://patchwork.kernel.org/project/linux-mips/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux.git
++F: Documentation/devicetree/bindings/mips/
++F: Documentation/mips/
++F: arch/mips/
++F: drivers/platform/mips/
++
++MIPS BOSTON DEVELOPMENT BOARD
++M: Paul Burton <paulburton@kernel.org>
++L: linux-mips@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/clock/img,boston-clock.txt
++F: arch/mips/boot/dts/img/boston.dts
++F: arch/mips/configs/generic/board-boston.config
++F: drivers/clk/imgtec/clk-boston.c
++F: include/dt-bindings/clock/boston-clock.h
++
++MIPS CORE DRIVERS
++M: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
++M: Serge Semin <fancer.lancer@gmail.com>
++L: linux-mips@vger.kernel.org
++S: Supported
++F: drivers/bus/mips_cdmm.c
++F: drivers/clocksource/mips-gic-timer.c
++F: drivers/cpuidle/cpuidle-cps.c
++F: drivers/irqchip/irq-mips-cpu.c
++F: drivers/irqchip/irq-mips-gic.c
++
++MIPS GENERIC PLATFORM
++M: Paul Burton <paulburton@kernel.org>
++L: linux-mips@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/power/mti,mips-cpc.yaml
++F: arch/mips/generic/
++F: arch/mips/tools/generic-board-config.sh
++
++MIPS RINT INSTRUCTION EMULATION
++M: Aleksandar Markovic <aleksandar.markovic@mips.com>
++L: linux-mips@vger.kernel.org
++S: Supported
++F: arch/mips/math-emu/dp_rint.c
++F: arch/mips/math-emu/sp_rint.c
++
++MIPS/LOONGSON1 ARCHITECTURE
++M: Keguang Zhang <keguang.zhang@gmail.com>
++L: linux-mips@vger.kernel.org
++S: Maintained
++F: arch/mips/include/asm/mach-loongson32/
++F: arch/mips/loongson32/
++F: drivers/*/*/*loongson1*
++F: drivers/*/*loongson1*
++
++MIPS/LOONGSON2EF ARCHITECTURE
++M: Jiaxun Yang <jiaxun.yang@flygoat.com>
++L: linux-mips@vger.kernel.org
++S: Maintained
++F: arch/mips/include/asm/mach-loongson2ef/
++F: arch/mips/loongson2ef/
++F: drivers/cpufreq/loongson2_cpufreq.c
++
++MIPS/LOONGSON64 ARCHITECTURE
++M: Huacai Chen <chenhuacai@kernel.org>
++M: Jiaxun Yang <jiaxun.yang@flygoat.com>
++L: linux-mips@vger.kernel.org
++S: Maintained
++F: arch/mips/include/asm/mach-loongson64/
++F: arch/mips/loongson64/
++F: drivers/irqchip/irq-loongson*
++F: drivers/platform/mips/cpu_hwmon.c
++
++MIROSOUND PCM20 FM RADIO RECEIVER DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/radio-miropcm20*
++
++MMP SUPPORT
++R: Lubomir Rintel <lkundrak@v3.sk>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Odd Fixes
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/lkundrak/linux-mmp.git
++F: arch/arm/boot/dts/mmp*
++F: arch/arm/mach-mmp/
++F: include/linux/soc/mmp/
++
++MMP USB PHY DRIVERS
++R: Lubomir Rintel <lkundrak@v3.sk>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: drivers/phy/marvell/phy-mmp3-usb.c
++F: drivers/phy/marvell/phy-pxa-usb.c
++
++MMU GATHER AND TLB INVALIDATION
++M: Will Deacon <will@kernel.org>
++M: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
++M: Andrew Morton <akpm@linux-foundation.org>
++M: Nick Piggin <npiggin@gmail.com>
++M: Peter Zijlstra <peterz@infradead.org>
++L: linux-arch@vger.kernel.org
++L: linux-mm@kvack.org
++S: Maintained
++F: arch/*/include/asm/tlb.h
++F: include/asm-generic/tlb.h
++F: mm/mmu_gather.c
++
++MN88472 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++F: drivers/media/dvb-frontends/mn88472*
++
++MN88473 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++F: drivers/media/dvb-frontends/mn88473*
++
++MODULE SUPPORT
++M: Luis Chamberlain <mcgrof@kernel.org>
++M: Jessica Yu <jeyu@kernel.org>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux.git modules-next
++F: include/linux/module.h
++F: kernel/module.c
++
++MONOLITHIC POWER SYSTEM PMIC DRIVER
++M: Saravanan Sekar <sravanhome@gmail.com>
++S: Maintained
++F: Documentation/devicetree/bindings/mfd/mps,mp2629.yaml
++F: Documentation/devicetree/bindings/regulator/mps,mp*.yaml
++F: drivers/iio/adc/mp2629_adc.c
++F: drivers/mfd/mp2629.c
++F: drivers/power/supply/mp2629_charger.c
++F: drivers/regulator/mp5416.c
++F: drivers/regulator/mpq7920.c
++F: drivers/regulator/mpq7920.h
++F: include/linux/mfd/mp2629.h
++
++MOTION EYE VAIO PICTUREBOOK CAMERA DRIVER
++S: Orphan
++W: http://popies.net/meye/
++F: Documentation/userspace-api/media/drivers/meye*
++F: drivers/media/pci/meye/
++F: include/uapi/linux/meye.h
++
++MOTORCOMM PHY DRIVER
++M: Peter Geis <pgwipeout@gmail.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/phy/motorcomm.c
++
++MOXA SMARTIO/INDUSTIO/INTELLIO SERIAL CARD
++M: Jiri Slaby <jirislaby@kernel.org>
++S: Maintained
++F: Documentation/driver-api/serial/moxa-smartio.rst
++F: drivers/tty/mxser.*
++
++MR800 AVERMEDIA USB FM RADIO DRIVER
++M: Alexey Klimov <klimov.linux@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/radio-mr800.c
++
++MRF24J40 IEEE 802.15.4 RADIO DRIVER
++M: Alan Ott <alan@signal11.us>
++L: linux-wpan@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/ieee802154/mrf24j40.txt
++F: drivers/net/ieee802154/mrf24j40.c
++
++MSI LAPTOP SUPPORT
++M: "Lee, Chun-Yi" <jlee@suse.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/msi-laptop.c
++
++MSI WMI SUPPORT
++L: platform-driver-x86@vger.kernel.org
++S: Orphan
++F: drivers/platform/x86/msi-wmi.c
++
++MSI001 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/tuners/msi001*
++
++MSI2500 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/usb/msi2500/
++
++MSTAR INTERRUPT CONTROLLER DRIVER
++M: Mark-PK Tsai <mark-pk.tsai@mediatek.com>
++M: Daniel Palmer <daniel@thingy.jp>
++S: Maintained
++F: Documentation/devicetree/bindings/interrupt-controller/mstar,mst-intc.yaml
++F: drivers/irqchip/irq-mst-intc.c
++
++MSYSTEMS DISKONCHIP G3 MTD DRIVER
++M: Robert Jarzmik <robert.jarzmik@free.fr>
++L: linux-mtd@lists.infradead.org
++S: Maintained
++F: drivers/mtd/devices/docg3*
++
++MT9M032 APTINA SENSOR DRIVER
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/mt9m032.c
++F: include/media/i2c/mt9m032.h
++
++MT9P031 APTINA CAMERA SENSOR
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/mt9p031.c
++F: include/media/i2c/mt9p031.h
++
++MT9T001 APTINA CAMERA SENSOR
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/mt9t001.c
++F: include/media/i2c/mt9t001.h
++
++MT9T112 APTINA CAMERA SENSOR
++M: Jacopo Mondi <jacopo@jmondi.org>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/mt9t112.c
++F: include/media/i2c/mt9t112.h
++
++MT9V032 APTINA CAMERA SENSOR
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/mt9v032.txt
++F: drivers/media/i2c/mt9v032.c
++F: include/media/i2c/mt9v032.h
++
++MT9V111 APTINA CAMERA SENSOR
++M: Jacopo Mondi <jacopo@jmondi.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/aptina,mt9v111.yaml
++F: drivers/media/i2c/mt9v111.c
++
++MULTIFUNCTION DEVICES (MFD)
++M: Lee Jones <lee.jones@linaro.org>
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git
++F: Documentation/devicetree/bindings/mfd/
++F: drivers/mfd/
++F: include/dt-bindings/mfd/
++F: include/linux/mfd/
++
++MULTIMEDIA CARD (MMC) ETC. OVER SPI
++S: Orphan
++F: drivers/mmc/host/mmc_spi.c
++F: include/linux/spi/mmc_spi.h
++
++MULTIMEDIA CARD (MMC), SECURE DIGITAL (SD) AND SDIO SUBSYSTEM
++M: Ulf Hansson <ulf.hansson@linaro.org>
++L: linux-mmc@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc.git
++F: Documentation/devicetree/bindings/mmc/
++F: drivers/mmc/
++F: include/linux/mmc/
++F: include/uapi/linux/mmc/
++
++MULTIPLEXER SUBSYSTEM
++M: Peter Rosin <peda@axentia.se>
++S: Maintained
++F: Documentation/ABI/testing/sysfs-class-mux*
++F: Documentation/devicetree/bindings/mux/
++F: drivers/mux/
++F: include/dt-bindings/mux/
++F: include/linux/mux/
++
++MUSB MULTIPOINT HIGH SPEED DUAL-ROLE CONTROLLER
++M: Bin Liu <b-liu@ti.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: drivers/usb/musb/
++
++MXL301RF MEDIA DRIVER
++M: Akihiro Tsukada <tskd08@gmail.com>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++F: drivers/media/tuners/mxl301rf*
++
++MXL5007T MEDIA DRIVER
++M: Michael Krufky <mkrufky@linuxtv.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://github.com/mkrufky
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/mkrufky/tuners.git
++F: drivers/media/tuners/mxl5007t.*
++
++MXSFB DRM DRIVER
++M: Marek Vasut <marex@denx.de>
++M: Stefan Agner <stefan@agner.ch>
++L: dri-devel@lists.freedesktop.org
++S: Supported
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/devicetree/bindings/display/fsl,lcdif.yaml
++F: drivers/gpu/drm/mxsfb/
++
++MYLEX DAC960 PCI RAID Controller
++M: Hannes Reinecke <hare@kernel.org>
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: drivers/scsi/myrb.*
++F: drivers/scsi/myrs.*
++
++MYRICOM MYRI-10G 10GbE DRIVER (MYRI10GE)
++M: Chris Lee <christopher.lee@cspi.com>
++L: netdev@vger.kernel.org
++S: Supported
++W: https://www.cspi.com/ethernet-products/support/downloads/
++F: drivers/net/ethernet/myricom/myri10ge/
++
++NAND FLASH SUBSYSTEM
++M: Miquel Raynal <miquel.raynal@bootlin.com>
++R: Richard Weinberger <richard@nod.at>
++L: linux-mtd@lists.infradead.org
++S: Maintained
++W: http://www.linux-mtd.infradead.org/
++Q: http://patchwork.ozlabs.org/project/linux-mtd/list/
++C: irc://irc.oftc.net/mtd
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next
++F: drivers/mtd/nand/
++F: include/linux/mtd/*nand*.h
++
++NATIVE INSTRUMENTS USB SOUND INTERFACE DRIVER
++M: Daniel Mack <zonque@gmail.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++W: http://www.native-instruments.com
++F: sound/usb/caiaq/
++
++NATSEMI ETHERNET DRIVER (DP8381x)
++S: Orphan
++F: drivers/net/ethernet/natsemi/natsemi.c
++
++NCR 5380 SCSI DRIVERS
++M: Finn Thain <fthain@linux-m68k.org>
++M: Michael Schmitz <schmitzmic@gmail.com>
++L: linux-scsi@vger.kernel.org
++S: Maintained
++F: Documentation/scsi/g_NCR5380.rst
++F: drivers/scsi/NCR5380.*
++F: drivers/scsi/arm/cumana_1.c
++F: drivers/scsi/arm/oak.c
++F: drivers/scsi/atari_scsi.*
++F: drivers/scsi/dmx3191d.c
++F: drivers/scsi/g_NCR5380.*
++F: drivers/scsi/mac_scsi.*
++F: drivers/scsi/sun3_scsi.*
++F: drivers/scsi/sun3_scsi_vme.c
++
++NCSI LIBRARY
++M: Samuel Mendoza-Jonas <sam@mendozajonas.com>
++S: Maintained
++F: net/ncsi/
++
++NCT6775 HARDWARE MONITOR DRIVER
++M: Guenter Roeck <linux@roeck-us.net>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/nct6775.rst
++F: drivers/hwmon/nct6775.c
++
++NETDEVSIM
++M: Jakub Kicinski <kuba@kernel.org>
++S: Maintained
++F: drivers/net/netdevsim/*
++
++NETEM NETWORK EMULATOR
++M: Stephen Hemminger <stephen@networkplumber.org>
++L: netdev@vger.kernel.org
++S: Maintained
++F: net/sched/sch_netem.c
++
++NETERION 10GbE DRIVERS (s2io/vxge)
++M: Jon Mason <jdmason@kudzu.us>
++L: netdev@vger.kernel.org
++S: Supported
++F: Documentation/networking/device_drivers/ethernet/neterion/s2io.rst
++F: Documentation/networking/device_drivers/ethernet/neterion/vxge.rst
++F: drivers/net/ethernet/neterion/
++
++NETFILTER
++M: Pablo Neira Ayuso <pablo@netfilter.org>
++M: Jozsef Kadlecsik <kadlec@netfilter.org>
++M: Florian Westphal <fw@strlen.de>
++L: netfilter-devel@vger.kernel.org
++L: coreteam@netfilter.org
++S: Maintained
++W: http://www.netfilter.org/
++W: http://www.iptables.org/
++W: http://www.nftables.org/
++Q: http://patchwork.ozlabs.org/project/netfilter-devel/list/
++C: irc://irc.libera.chat/netfilter
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next.git
++F: include/linux/netfilter*
++F: include/linux/netfilter/
++F: include/net/netfilter/
++F: include/uapi/linux/netfilter*
++F: include/uapi/linux/netfilter/
++F: net/*/netfilter.c
++F: net/*/netfilter/
++F: net/bridge/br_netfilter*.c
++F: net/netfilter/
++
++NETROM NETWORK LAYER
++M: Ralf Baechle <ralf@linux-mips.org>
++L: linux-hams@vger.kernel.org
++S: Maintained
++W: http://www.linux-ax25.org/
++F: include/net/netrom.h
++F: include/uapi/linux/netrom.h
++F: net/netrom/
++
++NETRONIX EMBEDDED CONTROLLER
++M: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
++S: Maintained
++F: Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml
++F: drivers/mfd/ntxec.c
++F: drivers/pwm/pwm-ntxec.c
++F: drivers/rtc/rtc-ntxec.c
++F: include/linux/mfd/ntxec.h
++
++NETRONOME ETHERNET DRIVERS
++M: Simon Horman <simon.horman@corigine.com>
++R: Jakub Kicinski <kuba@kernel.org>
++L: oss-drivers@corigine.com
++S: Maintained
++F: drivers/net/ethernet/netronome/
++
++NETWORK BLOCK DEVICE (NBD)
++M: Josef Bacik <josef@toxicpanda.com>
++L: linux-block@vger.kernel.org
++L: nbd@other.debian.org
++S: Maintained
++F: Documentation/admin-guide/blockdev/nbd.rst
++F: drivers/block/nbd.c
++F: include/trace/events/nbd.h
++F: include/uapi/linux/nbd.h
++
++NETWORK DROP MONITOR
++M: Neil Horman <nhorman@tuxdriver.com>
++L: netdev@vger.kernel.org
++S: Maintained
++W: https://fedorahosted.org/dropwatch/
++F: include/uapi/linux/net_dropmon.h
++F: net/core/drop_monitor.c
++
++NETWORKING DRIVERS
++M: "David S. Miller" <davem@davemloft.net>
++M: Jakub Kicinski <kuba@kernel.org>
++L: netdev@vger.kernel.org
++S: Maintained
++Q: https://patchwork.kernel.org/project/netdevbpf/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git
++F: Documentation/devicetree/bindings/net/
++F: drivers/connector/
++F: drivers/net/
++F: include/linux/etherdevice.h
++F: include/linux/fcdevice.h
++F: include/linux/fddidevice.h
++F: include/linux/hippidevice.h
++F: include/linux/if_*
++F: include/linux/inetdevice.h
++F: include/linux/netdevice.h
++F: include/uapi/linux/if_*
++F: include/uapi/linux/netdevice.h
++
++NETWORKING DRIVERS (WIRELESS)
++M: Kalle Valo <kvalo@codeaurora.org>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++Q: http://patchwork.kernel.org/project/linux-wireless/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next.git
++F: Documentation/devicetree/bindings/net/wireless/
++F: drivers/net/wireless/
++
++NETWORKING [DSA]
++M: Andrew Lunn <andrew@lunn.ch>
++M: Vivien Didelot <vivien.didelot@gmail.com>
++M: Florian Fainelli <f.fainelli@gmail.com>
++M: Vladimir Oltean <olteanv@gmail.com>
++S: Maintained
++F: Documentation/devicetree/bindings/net/dsa/
++F: drivers/net/dsa/
++F: include/linux/dsa/
++F: include/linux/platform_data/dsa.h
++F: include/net/dsa.h
++F: net/dsa/
++
++NETWORKING [GENERAL]
++M: "David S. Miller" <davem@davemloft.net>
++M: Jakub Kicinski <kuba@kernel.org>
++L: netdev@vger.kernel.org
++S: Maintained
++Q: https://patchwork.kernel.org/project/netdevbpf/list/
++B: mailto:netdev@vger.kernel.org
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git
++F: Documentation/networking/
++F: include/linux/in.h
++F: include/linux/net.h
++F: include/linux/netdevice.h
++F: include/net/
++F: include/uapi/linux/in.h
++F: include/uapi/linux/net.h
++F: include/uapi/linux/net_namespace.h
++F: include/uapi/linux/netdevice.h
++F: lib/net_utils.c
++F: lib/random32.c
++F: net/
++F: tools/testing/selftests/net/
++
++NETWORKING [IPSEC]
++M: Steffen Klassert <steffen.klassert@secunet.com>
++M: Herbert Xu <herbert@gondor.apana.org.au>
++M: "David S. Miller" <davem@davemloft.net>
++L: netdev@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next.git
++F: include/net/xfrm.h
++F: include/uapi/linux/xfrm.h
++F: net/ipv4/ah4.c
++F: net/ipv4/esp4*
++F: net/ipv4/ip_vti.c
++F: net/ipv4/ipcomp.c
++F: net/ipv4/xfrm*
++F: net/ipv6/ah6.c
++F: net/ipv6/esp6*
++F: net/ipv6/ip6_vti.c
++F: net/ipv6/ipcomp6.c
++F: net/ipv6/xfrm*
++F: net/key/
++F: net/xfrm/
++F: tools/testing/selftests/net/ipsec.c
++
++NETWORKING [IPv4/IPv6]
++M: "David S. Miller" <davem@davemloft.net>
++M: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
++M: David Ahern <dsahern@kernel.org>
++L: netdev@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git
++F: arch/x86/net/*
++F: include/net/ip*
++F: net/ipv4/
++F: net/ipv6/
++
++NETWORKING [LABELED] (NetLabel, Labeled IPsec, SECMARK)
++M: Paul Moore <paul@paul-moore.com>
++L: netdev@vger.kernel.org
++L: linux-security-module@vger.kernel.org
++S: Maintained
++W: https://github.com/netlabel
++F: Documentation/netlabel/
++F: include/net/calipso.h
++F: include/net/cipso_ipv4.h
++F: include/net/netlabel.h
++F: include/uapi/linux/netfilter/xt_CONNSECMARK.h
++F: include/uapi/linux/netfilter/xt_SECMARK.h
++F: net/ipv4/cipso_ipv4.c
++F: net/ipv6/calipso.c
++F: net/netfilter/xt_CONNSECMARK.c
++F: net/netfilter/xt_SECMARK.c
++F: net/netlabel/
++
++NETWORKING [MPTCP]
++M: Mat Martineau <mathew.j.martineau@linux.intel.com>
++M: Matthieu Baerts <matthieu.baerts@tessares.net>
++L: netdev@vger.kernel.org
++L: mptcp@lists.linux.dev
++S: Maintained
++W: https://github.com/multipath-tcp/mptcp_net-next/wiki
++B: https://github.com/multipath-tcp/mptcp_net-next/issues
++F: Documentation/networking/mptcp-sysctl.rst
++F: include/net/mptcp.h
++F: include/trace/events/mptcp.h
++F: include/uapi/linux/mptcp.h
++F: net/mptcp/
++F: tools/testing/selftests/net/mptcp/
++
++NETWORKING [TCP]
++M: Eric Dumazet <edumazet@google.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: include/linux/tcp.h
++F: include/net/tcp.h
++F: include/trace/events/tcp.h
++F: include/uapi/linux/tcp.h
++F: net/ipv4/syncookies.c
++F: net/ipv4/tcp*.c
++F: net/ipv6/syncookies.c
++F: net/ipv6/tcp*.c
++
++NETWORKING [TLS]
++M: Boris Pismenny <borisp@nvidia.com>
++M: John Fastabend <john.fastabend@gmail.com>
++M: Daniel Borkmann <daniel@iogearbox.net>
++M: Jakub Kicinski <kuba@kernel.org>
++L: netdev@vger.kernel.org
++S: Maintained
++F: include/net/tls.h
++F: include/uapi/linux/tls.h
++F: net/tls/*
++
++NETWORKING [WIRELESS]
++L: linux-wireless@vger.kernel.org
++Q: http://patchwork.kernel.org/project/linux-wireless/list/
++
++NETXEN (1/10) GbE SUPPORT
++M: Manish Chopra <manishc@marvell.com>
++M: Rahul Verma <rahulv@marvell.com>
++M: GR-Linux-NIC-Dev@marvell.com
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/qlogic/netxen/
++
++NET_FAILOVER MODULE
++M: Sridhar Samudrala <sridhar.samudrala@intel.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: Documentation/networking/net_failover.rst
++F: drivers/net/net_failover.c
++F: include/net/net_failover.h
++
++NEXTHOP
++M: David Ahern <dsahern@kernel.org>
++L: netdev@vger.kernel.org
++S: Maintained
++F: include/net/netns/nexthop.h
++F: include/net/nexthop.h
++F: include/uapi/linux/nexthop.h
++F: net/ipv4/nexthop.c
++
++NFC SUBSYSTEM
++M: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
++L: linux-nfc@lists.01.org (subscribers-only)
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/nfc/
++F: drivers/nfc/
++F: include/linux/platform_data/nfcmrvl.h
++F: include/net/nfc/
++F: include/uapi/linux/nfc.h
++F: net/nfc/
++
++NFC VIRTUAL NCI DEVICE DRIVER
++M: Bongsu Jeon <bongsu.jeon@samsung.com>
++L: netdev@vger.kernel.org
++L: linux-nfc@lists.01.org (subscribers-only)
++S: Supported
++F: drivers/nfc/virtual_ncidev.c
++F: tools/testing/selftests/nci/
++
++NFS, SUNRPC, AND LOCKD CLIENTS
++M: Trond Myklebust <trond.myklebust@hammerspace.com>
++M: Anna Schumaker <anna.schumaker@netapp.com>
++L: linux-nfs@vger.kernel.org
++S: Maintained
++W: http://client.linux-nfs.org
++T: git git://git.linux-nfs.org/projects/trondmy/linux-nfs.git
++F: fs/lockd/
++F: fs/nfs/
++F: fs/nfs_common/
++F: include/linux/lockd/
++F: include/linux/nfs*
++F: include/linux/sunrpc/
++F: include/uapi/linux/nfs*
++F: include/uapi/linux/sunrpc/
++F: net/sunrpc/
++F: Documentation/filesystems/nfs/
++
++NILFS2 FILESYSTEM
++M: Ryusuke Konishi <konishi.ryusuke@gmail.com>
++L: linux-nilfs@vger.kernel.org
++S: Supported
++W: https://nilfs.sourceforge.io/
++W: https://nilfs.osdn.jp/
++T: git git://github.com/konis/nilfs2.git
++F: Documentation/filesystems/nilfs2.rst
++F: fs/nilfs2/
++F: include/trace/events/nilfs2.h
++F: include/uapi/linux/nilfs2_api.h
++F: include/uapi/linux/nilfs2_ondisk.h
++
++NINJA SCSI-3 / NINJA SCSI-32Bi (16bit/CardBus) PCMCIA SCSI HOST ADAPTER DRIVER
++M: YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>
++S: Maintained
++W: http://www.netlab.is.tsukuba.ac.jp/~yokota/izumi/ninja/
++F: Documentation/scsi/NinjaSCSI.rst
++F: drivers/scsi/pcmcia/nsp_*
++
++NINJA SCSI-32Bi/UDE PCI/CARDBUS SCSI HOST ADAPTER DRIVER
++M: GOTO Masanori <gotom@debian.or.jp>
++M: YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>
++S: Maintained
++W: http://www.netlab.is.tsukuba.ac.jp/~yokota/izumi/ninja/
++F: Documentation/scsi/NinjaSCSI.rst
++F: drivers/scsi/nsp32*
++
++NIOS2 ARCHITECTURE
++M: Dinh Nguyen <dinguyen@kernel.org>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux.git
++F: arch/nios2/
++
++NITRO ENCLAVES (NE)
++M: Andra Paraschiv <andraprs@amazon.com>
++M: Alexandru Vasile <lexnv@amazon.com>
++M: Alexandru Ciobotaru <alcioa@amazon.com>
++L: linux-kernel@vger.kernel.org
++S: Supported
++W: https://aws.amazon.com/ec2/nitro/nitro-enclaves/
++F: Documentation/virt/ne_overview.rst
++F: drivers/virt/nitro_enclaves/
++F: include/linux/nitro_enclaves.h
++F: include/uapi/linux/nitro_enclaves.h
++F: samples/nitro_enclaves/
++
++NOHZ, DYNTICKS SUPPORT
++M: Frederic Weisbecker <fweisbec@gmail.com>
++M: Thomas Gleixner <tglx@linutronix.de>
++M: Ingo Molnar <mingo@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/nohz
++F: include/linux/sched/nohz.h
++F: include/linux/tick.h
++F: kernel/time/tick*.*
++
++NOKIA N900 CAMERA SUPPORT (ET8EK8 SENSOR, AD5820 FOCUS)
++M: Pavel Machek <pavel@ucw.cz>
++M: Sakari Ailus <sakari.ailus@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/i2c/ad5820.c
++F: drivers/media/i2c/et8ek8
++
++NOKIA N900 POWER SUPPLY DRIVERS
++R: Pali Rohár <pali@kernel.org>
++F: drivers/power/supply/bq2415x_charger.c
++F: drivers/power/supply/bq27xxx_battery.c
++F: drivers/power/supply/bq27xxx_battery_i2c.c
++F: drivers/power/supply/isp1704_charger.c
++F: drivers/power/supply/rx51_battery.c
++F: include/linux/power/bq2415x_charger.h
++F: include/linux/power/bq27xxx_battery.h
++
++NOLIBC HEADER FILE
++M: Willy Tarreau <w@1wt.eu>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/wtarreau/nolibc.git
++F: tools/include/nolibc/
++
++NSDEPS
++M: Matthias Maennich <maennich@google.com>
++S: Maintained
++F: Documentation/core-api/symbol-namespaces.rst
++F: scripts/nsdeps
++
++NTB AMD DRIVER
++M: Sanjay R Mehta <sanju.mehta@amd.com>
++M: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
++L: linux-ntb@googlegroups.com
++S: Supported
++F: drivers/ntb/hw/amd/
++
++NTB DRIVER CORE
++M: Jon Mason <jdmason@kudzu.us>
++M: Dave Jiang <dave.jiang@intel.com>
++M: Allen Hubbe <allenbh@gmail.com>
++L: linux-ntb@googlegroups.com
++S: Supported
++W: https://github.com/jonmason/ntb/wiki
++T: git git://github.com/jonmason/ntb.git
++F: drivers/net/ntb_netdev.c
++F: drivers/ntb/
++F: include/linux/ntb.h
++F: include/linux/ntb_transport.h
++F: tools/testing/selftests/ntb/
++
++NTB IDT DRIVER
++M: Serge Semin <fancer.lancer@gmail.com>
++L: linux-ntb@googlegroups.com
++S: Supported
++F: drivers/ntb/hw/idt/
++
++NTB INTEL DRIVER
++M: Dave Jiang <dave.jiang@intel.com>
++L: linux-ntb@googlegroups.com
++S: Supported
++W: https://github.com/davejiang/linux/wiki
++T: git https://github.com/davejiang/linux.git
++F: drivers/ntb/hw/intel/
++
++NTFS FILESYSTEM
++M: Anton Altaparmakov <anton@tuxera.com>
++L: linux-ntfs-dev@lists.sourceforge.net
++S: Supported
++W: http://www.tuxera.com/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/aia21/ntfs.git
++F: Documentation/filesystems/ntfs.rst
++F: fs/ntfs/
++
++NTFS3 FILESYSTEM
++M: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
++L: ntfs3@lists.linux.dev
++S: Supported
++W: http://www.paragon-software.com/
++T: git https://github.com/Paragon-Software-Group/linux-ntfs3.git
++F: Documentation/filesystems/ntfs3.rst
++F: fs/ntfs3/
++
++NUBUS SUBSYSTEM
++M: Finn Thain <fthain@linux-m68k.org>
++L: linux-m68k@lists.linux-m68k.org
++S: Maintained
++F: arch/*/include/asm/nubus.h
++F: drivers/nubus/
++F: include/linux/nubus.h
++F: include/uapi/linux/nubus.h
++
++NVIDIA (rivafb and nvidiafb) FRAMEBUFFER DRIVER
++M: Antonino Daplas <adaplas@gmail.com>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++F: drivers/video/fbdev/nvidia/
++F: drivers/video/fbdev/riva/
++
++NVM EXPRESS DRIVER
++M: Keith Busch <kbusch@kernel.org>
++M: Jens Axboe <axboe@fb.com>
++M: Christoph Hellwig <hch@lst.de>
++M: Sagi Grimberg <sagi@grimberg.me>
++L: linux-nvme@lists.infradead.org
++S: Supported
++W: http://git.infradead.org/nvme.git
++T: git://git.infradead.org/nvme.git
++F: drivers/nvme/host/
++F: include/linux/nvme.h
++F: include/uapi/linux/nvme_ioctl.h
++
++NVM EXPRESS FC TRANSPORT DRIVERS
++M: James Smart <james.smart@broadcom.com>
++L: linux-nvme@lists.infradead.org
++S: Supported
++F: drivers/nvme/host/fc.c
++F: drivers/nvme/target/fc.c
++F: drivers/nvme/target/fcloop.c
++F: include/linux/nvme-fc-driver.h
++F: include/linux/nvme-fc.h
++
++NVM EXPRESS TARGET DRIVER
++M: Christoph Hellwig <hch@lst.de>
++M: Sagi Grimberg <sagi@grimberg.me>
++M: Chaitanya Kulkarni <kch@nvidia.com>
++L: linux-nvme@lists.infradead.org
++S: Supported
++W: http://git.infradead.org/nvme.git
++T: git://git.infradead.org/nvme.git
++F: drivers/nvme/target/
++
++NVMEM FRAMEWORK
++M: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/srini/nvmem.git
++F: Documentation/ABI/stable/sysfs-bus-nvmem
++F: Documentation/devicetree/bindings/nvmem/
++F: drivers/nvmem/
++F: include/linux/nvmem-consumer.h
++F: include/linux/nvmem-provider.h
++
++NXP C45 TJA11XX PHY DRIVER
++M: Radu Pirea <radu-nicolae.pirea@oss.nxp.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/phy/nxp-c45-tja11xx.c
++
++NXP FSPI DRIVER
++M: Ashish Kumar <ashish.kumar@nxp.com>
++R: Yogesh Gaur <yogeshgaur.83@gmail.com>
++L: linux-spi@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt
++F: drivers/spi/spi-nxp-fspi.c
++
++NXP FXAS21002C DRIVER
++M: Rui Miguel Silva <rmfrfs@gmail.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/iio/gyroscope/nxp,fxas21002c.yaml
++F: drivers/iio/gyro/fxas21002c.h
++F: drivers/iio/gyro/fxas21002c_core.c
++F: drivers/iio/gyro/fxas21002c_i2c.c
++F: drivers/iio/gyro/fxas21002c_spi.c
++
++NXP i.MX CLOCK DRIVERS
++M: Abel Vesa <abel.vesa@nxp.com>
++L: linux-clk@vger.kernel.org
++L: linux-imx@nxp.com
++S: Maintained
++F: drivers/clk/imx/
++
++NXP i.MX 8MQ DCSS DRIVER
++M: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>
++R: Lucas Stach <l.stach@pengutronix.de>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++F: Documentation/devicetree/bindings/display/imx/nxp,imx8mq-dcss.yaml
++F: drivers/gpu/drm/imx/dcss/
++
++NXP PF8100/PF8121A/PF8200 PMIC REGULATOR DEVICE DRIVER
++M: Jagan Teki <jagan@amarulasolutions.com>
++S: Maintained
++F: Documentation/devicetree/bindings/regulator/nxp,pf8x00-regulator.yaml
++F: drivers/regulator/pf8x00-regulator.c
++
++NXP PTN5150A CC LOGIC AND EXTCON DRIVER
++M: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/extcon/extcon-ptn5150.yaml
++F: drivers/extcon/extcon-ptn5150.c
++
++NXP SGTL5000 DRIVER
++M: Fabio Estevam <festevam@gmail.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/sound/sgtl5000.yaml
++F: sound/soc/codecs/sgtl5000*
++
++NXP SJA1105 ETHERNET SWITCH DRIVER
++M: Vladimir Oltean <olteanv@gmail.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: drivers/net/dsa/sja1105
++F: drivers/net/pcs/pcs-xpcs-nxp.c
++
++NXP TDA998X DRM DRIVER
++M: Russell King <linux@armlinux.org.uk>
++S: Maintained
++T: git git://git.armlinux.org.uk/~rmk/linux-arm.git drm-tda998x-devel
++T: git git://git.armlinux.org.uk/~rmk/linux-arm.git drm-tda998x-fixes
++F: drivers/gpu/drm/i2c/tda998x_drv.c
++F: include/drm/i2c/tda998x.h
++F: include/dt-bindings/display/tda998x.h
++K: "nxp,tda998x"
++
++NXP TFA9879 DRIVER
++M: Peter Rosin <peda@axentia.se>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/sound/tfa9879.txt
++F: sound/soc/codecs/tfa9879*
++
++NXP/Goodix TFA989X (TFA1) DRIVER
++M: Stephan Gerhold <stephan@gerhold.net>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/sound/nxp,tfa989x.yaml
++F: sound/soc/codecs/tfa989x.c
++
++NXP-NCI NFC DRIVER
++R: Charles Gorand <charles.gorand@effinnov.com>
++L: linux-nfc@lists.01.org (subscribers-only)
++S: Supported
++F: drivers/nfc/nxp-nci
++
++NXP i.MX 8QXP/8QM JPEG V4L2 DRIVER
++M: Mirela Rabulea <mirela.rabulea@nxp.com>
++R: NXP Linux Team <linux-imx@nxp.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/media/imx8-jpeg.yaml
++F: drivers/media/platform/imx-jpeg
++
++NZXT-KRAKEN2 HARDWARE MONITORING DRIVER
++M: Jonas Malaco <jonas@protocubo.io>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/nzxt-kraken2.rst
++F: drivers/hwmon/nzxt-kraken2.c
++
++OBJAGG
++M: Jiri Pirko <jiri@nvidia.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: include/linux/objagg.h
++F: lib/objagg.c
++F: lib/test_objagg.c
++
++OBJTOOL
++M: Josh Poimboeuf <jpoimboe@redhat.com>
++M: Peter Zijlstra <peterz@infradead.org>
++S: Supported
++F: tools/objtool/
++F: include/linux/objtool.h
++
++OCELOT ETHERNET SWITCH DRIVER
++M: Vladimir Oltean <vladimir.oltean@nxp.com>
++M: Claudiu Manoil <claudiu.manoil@nxp.com>
++M: Alexandre Belloni <alexandre.belloni@bootlin.com>
++M: UNGLinuxDriver@microchip.com
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/dsa/ocelot/*
++F: drivers/net/ethernet/mscc/
++F: include/soc/mscc/ocelot*
++F: net/dsa/tag_ocelot.c
++F: net/dsa/tag_ocelot_8021q.c
++F: tools/testing/selftests/drivers/net/ocelot/*
++
++OCXL (Open Coherent Accelerator Processor Interface OpenCAPI) DRIVER
++M: Frederic Barrat <fbarrat@linux.ibm.com>
++M: Andrew Donnellan <ajd@linux.ibm.com>
++L: linuxppc-dev@lists.ozlabs.org
++S: Supported
++F: Documentation/userspace-api/accelerators/ocxl.rst
++F: arch/powerpc/include/asm/pnv-ocxl.h
++F: arch/powerpc/platforms/powernv/ocxl.c
++F: drivers/misc/ocxl/
++F: include/misc/ocxl*
++F: include/uapi/misc/ocxl.h
++
++OMAP AUDIO SUPPORT
++M: Peter Ujfalusi <peter.ujfalusi@gmail.com>
++M: Jarkko Nikula <jarkko.nikula@bitmer.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++L: linux-omap@vger.kernel.org
++S: Maintained
++F: sound/soc/ti/n810.c
++F: sound/soc/ti/omap*
++F: sound/soc/ti/rx51.c
++F: sound/soc/ti/sdma-pcm.*
++
++OMAP CLOCK FRAMEWORK SUPPORT
++M: Paul Walmsley <paul@pwsan.com>
++L: linux-omap@vger.kernel.org
++S: Maintained
++F: arch/arm/*omap*/*clock*
++
++OMAP DEVICE TREE SUPPORT
++M: Benoît Cousson <bcousson@baylibre.com>
++M: Tony Lindgren <tony@atomide.com>
++L: linux-omap@vger.kernel.org
++L: devicetree@vger.kernel.org
++S: Maintained
++F: arch/arm/boot/dts/*am3*
++F: arch/arm/boot/dts/*am4*
++F: arch/arm/boot/dts/*am5*
++F: arch/arm/boot/dts/*dra7*
++F: arch/arm/boot/dts/*omap*
++F: arch/arm/boot/dts/logicpd-som-lv*
++F: arch/arm/boot/dts/logicpd-torpedo*
++
++OMAP DISPLAY SUBSYSTEM and FRAMEBUFFER SUPPORT (DSS2)
++L: linux-omap@vger.kernel.org
++L: linux-fbdev@vger.kernel.org
++S: Orphan
++F: Documentation/arm/omap/dss.rst
++F: drivers/video/fbdev/omap2/
++
++OMAP FRAMEBUFFER SUPPORT
++L: linux-fbdev@vger.kernel.org
++L: linux-omap@vger.kernel.org
++S: Orphan
++F: drivers/video/fbdev/omap/
++
++OMAP GENERAL PURPOSE MEMORY CONTROLLER SUPPORT
++M: Roger Quadros <rogerq@kernel.org>
++M: Tony Lindgren <tony@atomide.com>
++L: linux-omap@vger.kernel.org
++S: Maintained
++F: arch/arm/mach-omap2/*gpmc*
++F: drivers/memory/omap-gpmc.c
++
++OMAP GPIO DRIVER
++M: Grygorii Strashko <grygorii.strashko@ti.com>
++M: Santosh Shilimkar <ssantosh@kernel.org>
++M: Kevin Hilman <khilman@kernel.org>
++L: linux-omap@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/gpio/ti,omap-gpio.yaml
++F: drivers/gpio/gpio-omap.c
++
++OMAP HARDWARE SPINLOCK SUPPORT
++M: Ohad Ben-Cohen <ohad@wizery.com>
++L: linux-omap@vger.kernel.org
++S: Maintained
++F: drivers/hwspinlock/omap_hwspinlock.c
++
++OMAP HS MMC SUPPORT
++L: linux-mmc@vger.kernel.org
++L: linux-omap@vger.kernel.org
++S: Orphan
++F: drivers/mmc/host/omap_hsmmc.c
++
++OMAP HWMOD DATA
++M: Paul Walmsley <paul@pwsan.com>
++L: linux-omap@vger.kernel.org
++S: Maintained
++F: arch/arm/mach-omap2/omap_hwmod*data*
++
++OMAP HWMOD SUPPORT
++M: Benoît Cousson <bcousson@baylibre.com>
++M: Paul Walmsley <paul@pwsan.com>
++L: linux-omap@vger.kernel.org
++S: Maintained
++F: arch/arm/mach-omap2/omap_hwmod.*
++
++OMAP I2C DRIVER
++M: Vignesh R <vigneshr@ti.com>
++L: linux-omap@vger.kernel.org
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/i2c/ti,omap4-i2c.yaml
++F: drivers/i2c/busses/i2c-omap.c
++
++OMAP IMAGING SUBSYSTEM (OMAP3 ISP and OMAP4 ISS)
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/media/ti,omap3isp.txt
++F: drivers/media/platform/omap3isp/
++F: drivers/staging/media/omap4iss/
++
++OMAP MMC SUPPORT
++M: Aaro Koskinen <aaro.koskinen@iki.fi>
++L: linux-omap@vger.kernel.org
++S: Odd Fixes
++F: drivers/mmc/host/omap.c
++
++OMAP POWER MANAGEMENT SUPPORT
++M: Kevin Hilman <khilman@kernel.org>
++L: linux-omap@vger.kernel.org
++S: Maintained
++F: arch/arm/*omap*/*pm*
++F: drivers/cpufreq/omap-cpufreq.c
++
++OMAP POWERDOMAIN SOC ADAPTATION LAYER SUPPORT
++M: Rajendra Nayak <rnayak@codeaurora.org>
++M: Paul Walmsley <paul@pwsan.com>
++L: linux-omap@vger.kernel.org
++S: Maintained
++F: arch/arm/mach-omap2/prm*
++
++OMAP RANDOM NUMBER GENERATOR SUPPORT
++M: Deepak Saxena <dsaxena@plexity.net>
++S: Maintained
++F: drivers/char/hw_random/omap-rng.c
++
++OMAP USB SUPPORT
++L: linux-usb@vger.kernel.org
++L: linux-omap@vger.kernel.org
++S: Orphan
++F: arch/arm/*omap*/usb*
++F: drivers/usb/*/*omap*
++
++OMAP/NEWFLOW NANOBONE MACHINE SUPPORT
++M: Mark Jackson <mpfj@newflow.co.uk>
++L: linux-omap@vger.kernel.org
++S: Maintained
++F: arch/arm/boot/dts/am335x-nano.dts
++
++OMAP1 SUPPORT
++M: Aaro Koskinen <aaro.koskinen@iki.fi>
++M: Tony Lindgren <tony@atomide.com>
++L: linux-omap@vger.kernel.org
++S: Maintained
++Q: http://patchwork.kernel.org/project/linux-omap/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap.git
++F: arch/arm/configs/omap1_defconfig
++F: arch/arm/mach-omap1/
++F: arch/arm/plat-omap/
++F: drivers/i2c/busses/i2c-omap.c
++F: include/linux/platform_data/ams-delta-fiq.h
++F: include/linux/platform_data/i2c-omap.h
++
++OMAP2+ SUPPORT
++M: Tony Lindgren <tony@atomide.com>
++L: linux-omap@vger.kernel.org
++S: Maintained
++W: http://www.muru.com/linux/omap/
++W: http://linux.omap.com/
++Q: http://patchwork.kernel.org/project/linux-omap/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap.git
++F: arch/arm/configs/omap2plus_defconfig
++F: arch/arm/mach-omap2/
++F: arch/arm/plat-omap/
++F: drivers/bus/ti-sysc.c
++F: drivers/i2c/busses/i2c-omap.c
++F: drivers/irqchip/irq-omap-intc.c
++F: drivers/mfd/*omap*.c
++F: drivers/mfd/menelaus.c
++F: drivers/mfd/palmas.c
++F: drivers/mfd/tps65217.c
++F: drivers/mfd/tps65218.c
++F: drivers/mfd/tps65910.c
++F: drivers/mfd/twl-core.[ch]
++F: drivers/mfd/twl4030*.c
++F: drivers/mfd/twl6030*.c
++F: drivers/mfd/twl6040*.c
++F: drivers/regulator/palmas-regulator*.c
++F: drivers/regulator/pbias-regulator.c
++F: drivers/regulator/tps65217-regulator.c
++F: drivers/regulator/tps65218-regulator.c
++F: drivers/regulator/tps65910-regulator.c
++F: drivers/regulator/twl-regulator.c
++F: drivers/regulator/twl6030-regulator.c
++F: include/linux/platform_data/i2c-omap.h
++F: include/linux/platform_data/ti-sysc.h
++
++OMFS FILESYSTEM
++M: Bob Copeland <me@bobcopeland.com>
++L: linux-karma-devel@lists.sourceforge.net
++S: Maintained
++F: Documentation/filesystems/omfs.rst
++F: fs/omfs/
++
++OMNIKEY CARDMAN 4000 DRIVER
++M: Harald Welte <laforge@gnumonks.org>
++S: Maintained
++F: drivers/char/pcmcia/cm4000_cs.c
++F: include/linux/cm4000_cs.h
++F: include/uapi/linux/cm4000_cs.h
++
++OMNIKEY CARDMAN 4040 DRIVER
++M: Harald Welte <laforge@gnumonks.org>
++S: Maintained
++F: drivers/char/pcmcia/cm4040_cs.*
++
++OMNIVISION OV02A10 SENSOR DRIVER
++M: Dongchun Zhu <dongchun.zhu@mediatek.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml
++F: drivers/media/i2c/ov02a10.c
++
++OMNIVISION OV13858 SENSOR DRIVER
++M: Sakari Ailus <sakari.ailus@linux.intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/ov13858.c
++
++OMNIVISION OV2680 SENSOR DRIVER
++M: Rui Miguel Silva <rmfrfs@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/ovti,ov2680.yaml
++F: drivers/media/i2c/ov2680.c
++
++OMNIVISION OV2685 SENSOR DRIVER
++M: Shunqian Zheng <zhengsq@rock-chips.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/ov2685.c
++
++OMNIVISION OV2740 SENSOR DRIVER
++M: Tianshu Qiu <tian.shu.qiu@intel.com>
++R: Shawn Tu <shawnx.tu@intel.com>
++R: Bingbu Cao <bingbu.cao@intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/ov2740.c
++
++OMNIVISION OV5640 SENSOR DRIVER
++M: Steve Longerbeam <slongerbeam@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/ov5640.c
++
++OMNIVISION OV5647 SENSOR DRIVER
++M: Dave Stevenson <dave.stevenson@raspberrypi.com>
++M: Jacopo Mondi <jacopo@jmondi.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/ovti,ov5647.yaml
++F: drivers/media/i2c/ov5647.c
++
++OMNIVISION OV5670 SENSOR DRIVER
++M: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
++M: Hyungwoo Yang <hyungwoo.yang@intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/ov5670.c
++
++OMNIVISION OV5675 SENSOR DRIVER
++M: Shawn Tu <shawnx.tu@intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/ov5675.c
++
++OMNIVISION OV5695 SENSOR DRIVER
++M: Shunqian Zheng <zhengsq@rock-chips.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/ov5695.c
++
++OMNIVISION OV7670 SENSOR DRIVER
++L: linux-media@vger.kernel.org
++S: Orphan
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/ov7670.txt
++F: drivers/media/i2c/ov7670.c
++
++OMNIVISION OV772x SENSOR DRIVER
++M: Jacopo Mondi <jacopo@jmondi.org>
++L: linux-media@vger.kernel.org
++S: Odd fixes
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/ovti,ov772x.yaml
++F: drivers/media/i2c/ov772x.c
++F: include/media/i2c/ov772x.h
++
++OMNIVISION OV7740 SENSOR DRIVER
++M: Wenyou Yang <wenyou.yang@microchip.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/ov7740.txt
++F: drivers/media/i2c/ov7740.c
++
++OMNIVISION OV8856 SENSOR DRIVER
++M: Dongchun Zhu <dongchun.zhu@mediatek.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/ov8856.yaml
++F: drivers/media/i2c/ov8856.c
++
++OMNIVISION OV9282 SENSOR DRIVER
++M: Paul J. Murphy <paul.j.murphy@intel.com>
++M: Daniele Alessandrelli <daniele.alessandrelli@intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/ovti,ov9282.yaml
++F: drivers/media/i2c/ov9282.c
++
++OMNIVISION OV9640 SENSOR DRIVER
++M: Petr Cvek <petrcvekcz@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/i2c/ov9640.*
++
++OMNIVISION OV9650 SENSOR DRIVER
++M: Sakari Ailus <sakari.ailus@linux.intel.com>
++R: Akinobu Mita <akinobu.mita@gmail.com>
++R: Sylwester Nawrocki <s.nawrocki@samsung.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/ov9650.txt
++F: drivers/media/i2c/ov9650.c
++
++OMNIVISION OV9734 SENSOR DRIVER
++M: Tianshu Qiu <tian.shu.qiu@intel.com>
++R: Bingbu Cao <bingbu.cao@intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/ov9734.c
++
++ONENAND FLASH DRIVER
++M: Kyungmin Park <kyungmin.park@samsung.com>
++L: linux-mtd@lists.infradead.org
++S: Maintained
++F: drivers/mtd/nand/onenand/
++F: include/linux/mtd/onenand*.h
++
++ONION OMEGA2+ BOARD
++M: Harvey Hunt <harveyhuntnexus@gmail.com>
++L: linux-mips@vger.kernel.org
++S: Maintained
++F: arch/mips/boot/dts/ralink/omega2p.dts
++
++OP-TEE DRIVER
++M: Jens Wiklander <jens.wiklander@linaro.org>
++L: op-tee@lists.trustedfirmware.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-bus-optee-devices
++F: drivers/tee/optee/
++
++OP-TEE RANDOM NUMBER GENERATOR (RNG) DRIVER
++M: Sumit Garg <sumit.garg@linaro.org>
++L: op-tee@lists.trustedfirmware.org
++S: Maintained
++F: drivers/char/hw_random/optee-rng.c
++
++OPA-VNIC DRIVER
++M: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
++M: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
++L: linux-rdma@vger.kernel.org
++S: Supported
++F: drivers/infiniband/ulp/opa_vnic
++
++OPEN FIRMWARE AND DEVICE TREE OVERLAYS
++M: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
++M: Frank Rowand <frowand.list@gmail.com>
++L: devicetree@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/dynamic-resolution-notes.rst
++F: Documentation/devicetree/overlay-notes.rst
++F: drivers/of/overlay.c
++F: drivers/of/resolver.c
++K: of_overlay_notifier_
++
++OPEN FIRMWARE AND FLATTENED DEVICE TREE
++M: Rob Herring <robh+dt@kernel.org>
++M: Frank Rowand <frowand.list@gmail.com>
++L: devicetree@vger.kernel.org
++S: Maintained
++W: http://www.devicetree.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git
++F: Documentation/ABI/testing/sysfs-firmware-ofw
++F: drivers/of/
++F: include/linux/of*.h
++F: scripts/dtc/
++
++OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS
++M: Rob Herring <robh+dt@kernel.org>
++L: devicetree@vger.kernel.org
++S: Maintained
++Q: http://patchwork.ozlabs.org/project/devicetree-bindings/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git
++F: Documentation/devicetree/
++F: arch/*/boot/dts/
++F: include/dt-bindings/
++
++OPENCOMPUTE PTP CLOCK DRIVER
++M: Jonathan Lemon <jonathan.lemon@gmail.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/ptp/ptp_ocp.c
++
++OPENCORES I2C BUS DRIVER
++M: Peter Korsgaard <peter@korsgaard.com>
++M: Andrew Lunn <andrew@lunn.ch>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/i2c/i2c-ocores.txt
++F: Documentation/i2c/busses/i2c-ocores.rst
++F: drivers/i2c/busses/i2c-ocores.c
++F: include/linux/platform_data/i2c-ocores.h
++
++OPENRISC ARCHITECTURE
++M: Jonas Bonn <jonas@southpole.se>
++M: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
++M: Stafford Horne <shorne@gmail.com>
++L: openrisc@lists.librecores.org
++S: Maintained
++W: http://openrisc.io
++T: git git://github.com/openrisc/linux.git
++F: Documentation/devicetree/bindings/openrisc/
++F: Documentation/openrisc/
++F: arch/openrisc/
++F: drivers/irqchip/irq-ompic.c
++F: drivers/irqchip/irq-or1k-*
++
++OPENVSWITCH
++M: Pravin B Shelar <pshelar@ovn.org>
++L: netdev@vger.kernel.org
++L: dev@openvswitch.org
++S: Maintained
++W: http://openvswitch.org
++F: include/uapi/linux/openvswitch.h
++F: net/openvswitch/
++
++OPERATING PERFORMANCE POINTS (OPP)
++M: Viresh Kumar <vireshk@kernel.org>
++M: Nishanth Menon <nm@ti.com>
++M: Stephen Boyd <sboyd@kernel.org>
++L: linux-pm@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm.git
++F: Documentation/devicetree/bindings/opp/
++F: Documentation/power/opp.rst
++F: drivers/opp/
++F: include/linux/pm_opp.h
++
++OPL4 DRIVER
++M: Clemens Ladisch <clemens@ladisch.de>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
++F: sound/drivers/opl4/
++
++ORACLE CLUSTER FILESYSTEM 2 (OCFS2)
++M: Mark Fasheh <mark@fasheh.com>
++M: Joel Becker <jlbec@evilplan.org>
++M: Joseph Qi <joseph.qi@linux.alibaba.com>
++L: ocfs2-devel@oss.oracle.com (moderated for non-subscribers)
++S: Supported
++W: http://ocfs2.wiki.kernel.org
++F: Documentation/filesystems/dlmfs.rst
++F: Documentation/filesystems/ocfs2.rst
++F: fs/ocfs2/
++
++ORANGEFS FILESYSTEM
++M: Mike Marshall <hubcap@omnibond.com>
++R: Martin Brandenburg <martin@omnibond.com>
++L: devel@lists.orangefs.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux.git
++F: Documentation/filesystems/orangefs.rst
++F: fs/orangefs/
++
++ORINOCO DRIVER
++L: linux-wireless@vger.kernel.org
++S: Orphan
++W: https://wireless.wiki.kernel.org/en/users/Drivers/orinoco
++W: http://www.nongnu.org/orinoco/
++F: drivers/net/wireless/intersil/orinoco/
++
++OV2659 OMNIVISION SENSOR DRIVER
++M: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/mhadli/v4l-dvb-davinci_devices.git
++F: drivers/media/i2c/ov2659.c
++F: include/media/i2c/ov2659.h
++
++OVERLAY FILESYSTEM
++M: Miklos Szeredi <miklos@szeredi.hu>
++L: linux-unionfs@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git
++F: Documentation/filesystems/overlayfs.rst
++F: fs/overlayfs/
++
++P54 WIRELESS DRIVER
++M: Christian Lamparter <chunkeey@googlemail.com>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++W: https://wireless.wiki.kernel.org/en/users/Drivers/p54
++F: drivers/net/wireless/intersil/p54/
++
++PACKING
++M: Vladimir Oltean <olteanv@gmail.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: Documentation/core-api/packing.rst
++F: include/linux/packing.h
++F: lib/packing.c
++
++PADATA PARALLEL EXECUTION MECHANISM
++M: Steffen Klassert <steffen.klassert@secunet.com>
++M: Daniel Jordan <daniel.m.jordan@oracle.com>
++L: linux-crypto@vger.kernel.org
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: Documentation/core-api/padata.rst
++F: include/linux/padata.h
++F: kernel/padata.c
++
++PAGE POOL
++M: Jesper Dangaard Brouer <hawk@kernel.org>
++M: Ilias Apalodimas <ilias.apalodimas@linaro.org>
++L: netdev@vger.kernel.org
++S: Supported
++F: Documentation/networking/page_pool.rst
++F: include/net/page_pool.h
++F: include/trace/events/page_pool.h
++F: net/core/page_pool.c
++
++PANASONIC LAPTOP ACPI EXTRAS DRIVER
++M: Kenneth Chan <kenneth.t.chan@gmail.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/panasonic-laptop.c
++
++PARALLAX PING IIO SENSOR DRIVER
++M: Andreas Klinger <ak@it-klinger.de>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/iio/proximity/parallax-ping.yaml
++F: drivers/iio/proximity/ping.c
++
++PARALLEL LCD/KEYPAD PANEL DRIVER
++M: Willy Tarreau <willy@haproxy.com>
++M: Ksenija Stanojevic <ksenija.stanojevic@gmail.com>
++S: Odd Fixes
++F: Documentation/admin-guide/lcd-panel-cgram.rst
++F: drivers/auxdisplay/panel.c
++
++PARALLEL PORT SUBSYSTEM
++M: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
++M: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
++L: linux-parport@lists.infradead.org (subscribers-only)
++S: Maintained
++F: Documentation/driver-api/parport*.rst
++F: drivers/char/ppdev.c
++F: drivers/parport/
++F: include/linux/parport*.h
++F: include/uapi/linux/ppdev.h
++
++PARAVIRT_OPS INTERFACE
++M: Juergen Gross <jgross@suse.com>
++M: Deep Shah <sdeep@vmware.com>
++M: "VMware, Inc." <pv-drivers@vmware.com>
++L: virtualization@lists.linux-foundation.org
++S: Supported
++F: Documentation/virt/paravirt_ops.rst
++F: arch/*/include/asm/paravirt*.h
++F: arch/*/kernel/paravirt*
++F: include/linux/hypervisor.h
++
++PARIDE DRIVERS FOR PARALLEL PORT IDE DEVICES
++M: Tim Waugh <tim@cyberelk.net>
++L: linux-parport@lists.infradead.org (subscribers-only)
++S: Maintained
++F: Documentation/admin-guide/blockdev/paride.rst
++F: drivers/block/paride/
++
++PARISC ARCHITECTURE
++M: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
++M: Helge Deller <deller@gmx.de>
++L: linux-parisc@vger.kernel.org
++S: Maintained
++W: https://parisc.wiki.kernel.org
++Q: http://patchwork.kernel.org/project/linux-parisc/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git
++F: Documentation/parisc/
++F: arch/parisc/
++F: drivers/char/agp/parisc-agp.c
++F: drivers/input/misc/hp_sdc_rtc.c
++F: drivers/input/serio/gscps2.c
++F: drivers/input/serio/hp_sdc*
++F: drivers/parisc/
++F: drivers/parport/parport_gsc.*
++F: drivers/tty/serial/8250/8250_gsc.c
++F: drivers/video/console/sti*
++F: drivers/video/fbdev/sti*
++F: drivers/video/logo/logo_parisc*
++F: include/linux/hp_sdc.h
++
++PARMAN
++M: Jiri Pirko <jiri@nvidia.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: include/linux/parman.h
++F: lib/parman.c
++F: lib/test_parman.c
++
++PC ENGINES APU BOARD DRIVER
++M: Enrico Weigelt, metux IT consult <info@metux.net>
++S: Maintained
++F: drivers/platform/x86/pcengines-apuv2.c
++
++PC87360 HARDWARE MONITORING DRIVER
++M: Jim Cromie <jim.cromie@gmail.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/pc87360.rst
++F: drivers/hwmon/pc87360.c
++
++PC8736x GPIO DRIVER
++M: Jim Cromie <jim.cromie@gmail.com>
++S: Maintained
++F: drivers/char/pc8736x_gpio.c
++
++PC87427 HARDWARE MONITORING DRIVER
++M: Jean Delvare <jdelvare@suse.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/pc87427.rst
++F: drivers/hwmon/pc87427.c
++
++PCA9532 LED DRIVER
++M: Riku Voipio <riku.voipio@iki.fi>
++S: Maintained
++F: drivers/leds/leds-pca9532.c
++F: include/linux/leds-pca9532.h
++
++PCA9541 I2C BUS MASTER SELECTOR DRIVER
++M: Guenter Roeck <linux@roeck-us.net>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: drivers/i2c/muxes/i2c-mux-pca9541.c
++
++PCDP - PRIMARY CONSOLE AND DEBUG PORT
++M: Khalid Aziz <khalid@gonehiking.org>
++S: Maintained
++F: drivers/firmware/pcdp.*
++
++PCI DRIVER FOR AARDVARK (Marvell Armada 3700)
++M: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
++M: Pali Rohár <pali@kernel.org>
++L: linux-pci@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/pci/aardvark-pci.txt
++F: drivers/pci/controller/pci-aardvark.c
++
++PCI DRIVER FOR ALTERA PCIE IP
++M: Joyce Ooi <joyce.ooi@intel.com>
++L: linux-pci@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/pci/altera-pcie.txt
++F: drivers/pci/controller/pcie-altera.c
++
++PCI DRIVER FOR APPLIEDMICRO XGENE
++M: Toan Le <toan@os.amperecomputing.com>
++L: linux-pci@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/pci/xgene-pci.txt
++F: drivers/pci/controller/pci-xgene.c
++
++PCI DRIVER FOR ARM VERSATILE PLATFORM
++M: Rob Herring <robh@kernel.org>
++L: linux-pci@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/pci/versatile.yaml
++F: drivers/pci/controller/pci-versatile.c
++
++PCI DRIVER FOR ARMADA 8K
++M: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
++L: linux-pci@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/pci/pci-armada8k.txt
++F: drivers/pci/controller/dwc/pcie-armada8k.c
++
++PCI DRIVER FOR CADENCE PCIE IP
++M: Tom Joseph <tjoseph@cadence.com>
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/pci/cdns,*
++F: drivers/pci/controller/cadence/
++
++PCI DRIVER FOR FREESCALE LAYERSCAPE
++M: Minghuan Lian <minghuan.Lian@nxp.com>
++M: Mingkai Hu <mingkai.hu@nxp.com>
++M: Roy Zang <roy.zang@nxp.com>
++L: linuxppc-dev@lists.ozlabs.org
++L: linux-pci@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: drivers/pci/controller/dwc/*layerscape*
++
++PCI DRIVER FOR GENERIC OF HOSTS
++M: Will Deacon <will@kernel.org>
++L: linux-pci@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/pci/host-generic-pci.yaml
++F: drivers/pci/controller/pci-host-common.c
++F: drivers/pci/controller/pci-host-generic.c
++
++PCI DRIVER FOR IMX6
++M: Richard Zhu <hongxing.zhu@nxp.com>
++M: Lucas Stach <l.stach@pengutronix.de>
++L: linux-pci@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
++F: drivers/pci/controller/dwc/*imx6*
++
++PCI DRIVER FOR FU740
++M: Paul Walmsley <paul.walmsley@sifive.com>
++M: Greentime Hu <greentime.hu@sifive.com>
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml
++F: drivers/pci/controller/dwc/pcie-fu740.c
++
++PCI DRIVER FOR INTEL IXP4XX
++M: Linus Walleij <linus.walleij@linaro.org>
++S: Maintained
++F: Documentation/devicetree/bindings/pci/intel,ixp4xx-pci.yaml
++F: drivers/pci/controller/pci-ixp4xx.c
++
++PCI DRIVER FOR INTEL VOLUME MANAGEMENT DEVICE (VMD)
++M: Nirmal Patel <nirmal.patel@linux.intel.com>
++R: Jonathan Derrick <jonathan.derrick@linux.dev>
++L: linux-pci@vger.kernel.org
++S: Supported
++F: drivers/pci/controller/vmd.c
++
++PCI DRIVER FOR MICROSEMI SWITCHTEC
++M: Kurt Schwemmer <kurt.schwemmer@microsemi.com>
++M: Logan Gunthorpe <logang@deltatee.com>
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-class-switchtec
++F: Documentation/driver-api/switchtec.rst
++F: drivers/ntb/hw/mscc/
++F: drivers/pci/switch/switchtec*
++F: include/linux/switchtec.h
++F: include/uapi/linux/switchtec_ioctl.h
++
++PCI DRIVER FOR MOBIVEIL PCIE IP
++M: Karthikeyan Mitran <m.karthikeyan@mobiveil.co.in>
++M: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
++L: linux-pci@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/pci/mobiveil-pcie.txt
++F: drivers/pci/controller/mobiveil/pcie-mobiveil*
++
++PCI DRIVER FOR MVEBU (Marvell Armada 370 and Armada XP SOC support)
++M: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
++L: linux-pci@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: drivers/pci/controller/*mvebu*
++
++PCI DRIVER FOR NVIDIA TEGRA
++M: Thierry Reding <thierry.reding@gmail.com>
++L: linux-tegra@vger.kernel.org
++L: linux-pci@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt
++F: drivers/pci/controller/pci-tegra.c
++
++PCI DRIVER FOR NXP LAYERSCAPE GEN4 CONTROLLER
++M: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
++L: linux-pci@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt
++F: drivers/pci/controller/mobiveil/pcie-layerscape-gen4.c
++
++PCI DRIVER FOR RENESAS R-CAR
++M: Marek Vasut <marek.vasut+renesas@gmail.com>
++M: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
++L: linux-pci@vger.kernel.org
++L: linux-renesas-soc@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/pci/*rcar*
++F: drivers/pci/controller/*rcar*
++
++PCI DRIVER FOR SAMSUNG EXYNOS
++M: Jingoo Han <jingoohan1@gmail.com>
++L: linux-pci@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-samsung-soc@vger.kernel.org
++S: Maintained
++F: drivers/pci/controller/dwc/pci-exynos.c
++
++PCI DRIVER FOR SYNOPSYS DESIGNWARE
++M: Jingoo Han <jingoohan1@gmail.com>
++M: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml
++F: Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml
++F: drivers/pci/controller/dwc/*designware*
++
++PCI DRIVER FOR TI DRA7XX/J721E
++M: Kishon Vijay Abraham I <kishon@ti.com>
++L: linux-omap@vger.kernel.org
++L: linux-pci@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++F: Documentation/devicetree/bindings/pci/ti-pci.txt
++F: drivers/pci/controller/cadence/pci-j721e.c
++F: drivers/pci/controller/dwc/pci-dra7xx.c
++
++PCI DRIVER FOR V3 SEMICONDUCTOR V360EPC
++M: Linus Walleij <linus.walleij@linaro.org>
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/pci/v3-v360epc-pci.txt
++F: drivers/pci/controller/pci-v3-semi.c
++
++PCI ENDPOINT SUBSYSTEM
++M: Kishon Vijay Abraham I <kishon@ti.com>
++M: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
++R: Krzysztof Wilczyński <kw@linux.com>
++L: linux-pci@vger.kernel.org
++S: Supported
++F: Documentation/PCI/endpoint/*
++F: Documentation/misc-devices/pci-endpoint-test.rst
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/kishon/pci-endpoint.git
++F: drivers/misc/pci_endpoint_test.c
++F: drivers/pci/endpoint/
++F: tools/pci/
++
++PCI ENHANCED ERROR HANDLING (EEH) FOR POWERPC
++M: Russell Currey <ruscur@russell.cc>
++M: Oliver O'Halloran <oohall@gmail.com>
++L: linuxppc-dev@lists.ozlabs.org
++S: Supported
++F: Documentation/PCI/pci-error-recovery.rst
++F: Documentation/powerpc/eeh-pci-error-recovery.rst
++F: arch/powerpc/include/*/eeh*.h
++F: arch/powerpc/kernel/eeh*.c
++F: arch/powerpc/platforms/*/eeh*.c
++F: drivers/pci/pcie/aer.c
++F: drivers/pci/pcie/dpc.c
++F: drivers/pci/pcie/err.c
++
++PCI ERROR RECOVERY
++M: Linas Vepstas <linasvepstas@gmail.com>
++L: linux-pci@vger.kernel.org
++S: Supported
++F: Documentation/PCI/pci-error-recovery.rst
++
++PCI MSI DRIVER FOR ALTERA MSI IP
++M: Joyce Ooi <joyce.ooi@intel.com>
++L: linux-pci@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/pci/altera-pcie-msi.txt
++F: drivers/pci/controller/pcie-altera-msi.c
++
++PCI MSI DRIVER FOR APPLIEDMICRO XGENE
++M: Toan Le <toan@os.amperecomputing.com>
++L: linux-pci@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/pci/xgene-pci-msi.txt
++F: drivers/pci/controller/pci-xgene-msi.c
++
++PCI NATIVE HOST BRIDGE AND ENDPOINT DRIVERS
++M: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
++R: Rob Herring <robh@kernel.org>
++R: Krzysztof Wilczyński <kw@linux.com>
++L: linux-pci@vger.kernel.org
++S: Supported
++Q: http://patchwork.ozlabs.org/project/linux-pci/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/pci.git/
++F: drivers/pci/controller/
++
++PCI SUBSYSTEM
++M: Bjorn Helgaas <bhelgaas@google.com>
++L: linux-pci@vger.kernel.org
++S: Supported
++Q: http://patchwork.ozlabs.org/project/linux-pci/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git
++F: Documentation/PCI/
++F: Documentation/devicetree/bindings/pci/
++F: arch/x86/kernel/early-quirks.c
++F: arch/x86/kernel/quirks.c
++F: arch/x86/pci/
++F: drivers/acpi/pci*
++F: drivers/pci/
++F: include/asm-generic/pci*
++F: include/linux/of_pci.h
++F: include/linux/pci*
++F: include/uapi/linux/pci*
++F: lib/pci*
++
++PCIE DRIVER FOR AMAZON ANNAPURNA LABS
++M: Jonathan Chocron <jonnyc@amazon.com>
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/pci/pcie-al.txt
++F: drivers/pci/controller/dwc/pcie-al.c
++
++PCIE DRIVER FOR AMLOGIC MESON
++M: Yue Wang <yue.wang@Amlogic.com>
++L: linux-pci@vger.kernel.org
++L: linux-amlogic@lists.infradead.org
++S: Maintained
++F: drivers/pci/controller/dwc/pci-meson.c
++
++PCIE DRIVER FOR AXIS ARTPEC
++M: Jesper Nilsson <jesper.nilsson@axis.com>
++L: linux-arm-kernel@axis.com
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/pci/axis,artpec*
++F: drivers/pci/controller/dwc/*artpec*
++
++PCIE DRIVER FOR CAVIUM THUNDERX
++M: Robert Richter <rric@kernel.org>
++L: linux-pci@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Odd Fixes
++F: drivers/pci/controller/pci-thunder-*
++
++PCIE DRIVER FOR HISILICON
++M: Zhou Wang <wangzhou1@hisilicon.com>
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: drivers/pci/controller/dwc/pcie-hisi.c
++
++PCIE DRIVER FOR HISILICON KIRIN
++M: Xiaowei Song <songxiaowei@hisilicon.com>
++M: Binghui Wang <wangbinghui@hisilicon.com>
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/pci/hisilicon,kirin-pcie.yaml
++F: drivers/pci/controller/dwc/pcie-kirin.c
++
++PCIE DRIVER FOR HISILICON STB
++M: Shawn Guo <shawn.guo@linaro.org>
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/pci/hisilicon-histb-pcie.txt
++F: drivers/pci/controller/dwc/pcie-histb.c
++
++PCIE DRIVER FOR INTEL KEEM BAY
++M: Srikanth Thokala <srikanth.thokala@intel.com>
++L: linux-pci@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/pci/intel,keembay-pcie*
++F: drivers/pci/controller/dwc/pcie-keembay.c
++
++PCIE DRIVER FOR INTEL LGM GW SOC
++M: Rahul Tanwar <rtanwar@maxlinear.com>
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/pci/intel-gw-pcie.yaml
++F: drivers/pci/controller/dwc/pcie-intel-gw.c
++
++PCIE DRIVER FOR MEDIATEK
++M: Ryder Lee <ryder.lee@mediatek.com>
++M: Jianjun Wang <jianjun.wang@mediatek.com>
++L: linux-pci@vger.kernel.org
++L: linux-mediatek@lists.infradead.org
++S: Supported
++F: Documentation/devicetree/bindings/pci/mediatek*
++F: drivers/pci/controller/*mediatek*
++
++PCIE DRIVER FOR MICROCHIP
++M: Daire McNamara <daire.mcnamara@microchip.com>
++L: linux-pci@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/pci/microchip*
++F: drivers/pci/controller/*microchip*
++
++PCIE DRIVER FOR QUALCOMM MSM
++M: Stanimir Varbanov <svarbanov@mm-sol.com>
++L: linux-pci@vger.kernel.org
++L: linux-arm-msm@vger.kernel.org
++S: Maintained
++F: drivers/pci/controller/dwc/*qcom*
++
++PCIE DRIVER FOR ROCKCHIP
++M: Shawn Lin <shawn.lin@rock-chips.com>
++L: linux-pci@vger.kernel.org
++L: linux-rockchip@lists.infradead.org
++S: Maintained
++F: Documentation/devicetree/bindings/pci/rockchip-pcie*
++F: drivers/pci/controller/pcie-rockchip*
++
++PCIE DRIVER FOR SOCIONEXT UNIPHIER
++M: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/pci/uniphier-pcie*
++F: drivers/pci/controller/dwc/pcie-uniphier*
++
++PCIE DRIVER FOR ST SPEAR13XX
++M: Pratyush Anand <pratyush.anand@gmail.com>
++L: linux-pci@vger.kernel.org
++S: Maintained
++F: drivers/pci/controller/dwc/*spear*
++
++PCMCIA SUBSYSTEM
++M: Dominik Brodowski <linux@dominikbrodowski.net>
++S: Odd Fixes
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia.git
++F: Documentation/pcmcia/
++F: drivers/pcmcia/
++F: include/pcmcia/
++F: tools/pcmcia/
++
++PCNET32 NETWORK DRIVER
++M: Don Fry <pcnet32@frontier.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/amd/pcnet32.c
++
++PCRYPT PARALLEL CRYPTO ENGINE
++M: Steffen Klassert <steffen.klassert@secunet.com>
++L: linux-crypto@vger.kernel.org
++S: Maintained
++F: crypto/pcrypt.c
++F: include/crypto/pcrypt.h
++
++PEAQ WMI HOTKEYS DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/peaq-wmi.c
++
++PENSANDO ETHERNET DRIVERS
++M: Shannon Nelson <snelson@pensando.io>
++M: drivers@pensando.io
++L: netdev@vger.kernel.org
++S: Supported
++F: Documentation/networking/device_drivers/ethernet/pensando/ionic.rst
++F: drivers/net/ethernet/pensando/
++
++PER-CPU MEMORY ALLOCATOR
++M: Dennis Zhou <dennis@kernel.org>
++M: Tejun Heo <tj@kernel.org>
++M: Christoph Lameter <cl@linux.com>
++L: linux-mm@kvack.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu.git
++F: arch/*/include/asm/percpu.h
++F: include/linux/percpu*.h
++F: lib/percpu*.c
++F: mm/percpu*.c
++
++PER-TASK DELAY ACCOUNTING
++M: Balbir Singh <bsingharora@gmail.com>
++S: Maintained
++F: include/linux/delayacct.h
++F: kernel/delayacct.c
++
++PERFORMANCE EVENTS SUBSYSTEM
++M: Peter Zijlstra <peterz@infradead.org>
++M: Ingo Molnar <mingo@redhat.com>
++M: Arnaldo Carvalho de Melo <acme@kernel.org>
++R: Mark Rutland <mark.rutland@arm.com>
++R: Alexander Shishkin <alexander.shishkin@linux.intel.com>
++R: Jiri Olsa <jolsa@redhat.com>
++R: Namhyung Kim <namhyung@kernel.org>
++L: linux-perf-users@vger.kernel.org
++L: linux-kernel@vger.kernel.org
++S: Supported
++W: https://perf.wiki.kernel.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf/core
++F: arch/*/events/*
++F: arch/*/events/*/*
++F: arch/*/include/asm/perf_event.h
++F: arch/*/kernel/*/*/perf_event*.c
++F: arch/*/kernel/*/perf_event*.c
++F: arch/*/kernel/perf_callchain.c
++F: arch/*/kernel/perf_event*.c
++F: include/linux/perf_event.h
++F: include/uapi/linux/perf_event.h
++F: kernel/events/*
++F: tools/lib/perf/
++F: tools/perf/
++
++PERFORMANCE EVENTS TOOLING ARM64
++R: John Garry <john.garry@huawei.com>
++R: Will Deacon <will@kernel.org>
++R: Mathieu Poirier <mathieu.poirier@linaro.org>
++R: Leo Yan <leo.yan@linaro.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++F: tools/build/feature/test-libopencsd.c
++F: tools/perf/arch/arm*/
++F: tools/perf/pmu-events/arch/arm64/
++F: tools/perf/util/arm-spe*
++F: tools/perf/util/cs-etm*
++
++PERSONALITY HANDLING
++M: Christoph Hellwig <hch@infradead.org>
++L: linux-abi-devel@lists.sourceforge.net
++S: Maintained
++F: include/linux/personality.h
++F: include/uapi/linux/personality.h
++
++PHOENIX RC FLIGHT CONTROLLER ADAPTER
++M: Marcus Folkesson <marcus.folkesson@gmail.com>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: Documentation/input/devices/pxrc.rst
++F: drivers/input/joystick/pxrc.c
++
++PHONET PROTOCOL
++M: Remi Denis-Courmont <courmisch@gmail.com>
++S: Supported
++F: Documentation/networking/phonet.rst
++F: include/linux/phonet.h
++F: include/net/phonet/
++F: include/uapi/linux/phonet.h
++F: net/phonet/
++
++PHRAM MTD DRIVER
++M: Joern Engel <joern@lazybastard.org>
++L: linux-mtd@lists.infradead.org
++S: Maintained
++F: drivers/mtd/devices/phram.c
++
++PICOLCD HID DRIVER
++M: Bruno Prémont <bonbons@linux-vserver.org>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/hid/hid-picolcd*
++
++PIDFD API
++M: Christian Brauner <christian@brauner.io>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux.git
++F: samples/pidfd/
++F: tools/testing/selftests/clone3/
++F: tools/testing/selftests/pid_namespace/
++F: tools/testing/selftests/pidfd/
++K: (?i)pidfd
++K: (?i)clone3
++K: \b(clone_args|kernel_clone_args)\b
++
++PIN CONTROL SUBSYSTEM
++M: Linus Walleij <linus.walleij@linaro.org>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl.git
++F: Documentation/devicetree/bindings/pinctrl/
++F: Documentation/driver-api/pin-control.rst
++F: drivers/pinctrl/
++F: include/linux/pinctrl/
++
++PIN CONTROLLER - AMD
++M: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
++M: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
++S: Maintained
++F: drivers/pinctrl/pinctrl-amd.c
++
++PIN CONTROLLER - FREESCALE
++M: Dong Aisheng <aisheng.dong@nxp.com>
++M: Fabio Estevam <festevam@gmail.com>
++M: Shawn Guo <shawnguo@kernel.org>
++M: Stefan Agner <stefan@agner.ch>
++R: Pengutronix Kernel Team <kernel@pengutronix.de>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/pinctrl/fsl,*
++F: drivers/pinctrl/freescale/
++
++PIN CONTROLLER - INTEL
++M: Mika Westerberg <mika.westerberg@linux.intel.com>
++M: Andy Shevchenko <andy@kernel.org>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/pinctrl/intel.git
++F: drivers/pinctrl/intel/
++
++PIN CONTROLLER - KEEMBAY
++M: Lakshmi Sowjanya D <lakshmi.sowjanya.d@intel.com>
++S: Supported
++F: drivers/pinctrl/pinctrl-keembay*
++
++PIN CONTROLLER - MEDIATEK
++M: Sean Wang <sean.wang@kernel.org>
++L: linux-mediatek@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/pinctrl/mediatek,mt65xx-pinctrl.yaml
++F: Documentation/devicetree/bindings/pinctrl/mediatek,mt6797-pinctrl.yaml
++F: Documentation/devicetree/bindings/pinctrl/mediatek,mt7622-pinctrl.yaml
++F: Documentation/devicetree/bindings/pinctrl/mediatek,mt8183-pinctrl.yaml
++F: drivers/pinctrl/mediatek/
++
++PIN CONTROLLER - MICROCHIP AT91
++M: Ludovic Desroches <ludovic.desroches@microchip.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-gpio@vger.kernel.org
++S: Supported
++F: drivers/gpio/gpio-sama5d2-piobu.c
++F: drivers/pinctrl/pinctrl-at91*
++
++PIN CONTROLLER - QUALCOMM
++M: Bjorn Andersson <bjorn.andersson@linaro.org>
++L: linux-arm-msm@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/pinctrl/qcom,*.txt
++F: drivers/pinctrl/qcom/
++
++PIN CONTROLLER - RENESAS
++M: Geert Uytterhoeven <geert+renesas@glider.be>
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git renesas-pinctrl
++F: Documentation/devicetree/bindings/pinctrl/renesas,*
++F: drivers/pinctrl/renesas/
++
++PIN CONTROLLER - SAMSUNG
++M: Tomasz Figa <tomasz.figa@gmail.com>
++M: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
++M: Sylwester Nawrocki <s.nawrocki@samsung.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-samsung-soc@vger.kernel.org
++S: Maintained
++Q: https://patchwork.kernel.org/project/linux-samsung-soc/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/pinctrl/samsung.git
++F: Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt
++F: drivers/pinctrl/samsung/
++F: include/dt-bindings/pinctrl/samsung.h
++
++PIN CONTROLLER - SINGLE
++M: Tony Lindgren <tony@atomide.com>
++M: Haojian Zhuang <haojian.zhuang@linaro.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-omap@vger.kernel.org
++S: Maintained
++F: drivers/pinctrl/pinctrl-single.c
++
++PIN CONTROLLER - ST SPEAR
++M: Viresh Kumar <vireshk@kernel.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++W: http://www.st.com/spear
++F: drivers/pinctrl/spear/
++
++PKTCDVD DRIVER
++M: linux-block@vger.kernel.org
++S: Orphan
++F: drivers/block/pktcdvd.c
++F: include/linux/pktcdvd.h
++F: include/uapi/linux/pktcdvd.h
++
++PLANTOWER PMS7003 AIR POLLUTION SENSOR DRIVER
++M: Tomasz Duszynski <tduszyns@gmail.com>
++S: Maintained
++F: Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.yaml
++F: drivers/iio/chemical/pms7003.c
++
++PLDMFW LIBRARY
++M: Jacob Keller <jacob.e.keller@intel.com>
++S: Maintained
++F: Documentation/driver-api/pldmfw/
++F: include/linux/pldmfw.h
++F: lib/pldmfw/
++
++PLX DMA DRIVER
++M: Logan Gunthorpe <logang@deltatee.com>
++S: Maintained
++F: drivers/dma/plx_dma.c
++
++PM6764TR DRIVER
++M: Charles Hsu <hsu.yungteng@gmail.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/pm6764tr.rst
++F: drivers/hwmon/pmbus/pm6764tr.c
++
++PM-GRAPH UTILITY
++M: "Todd E Brandt" <todd.e.brandt@linux.intel.com>
++L: linux-pm@vger.kernel.org
++S: Supported
++W: https://01.org/pm-graph
++B: https://bugzilla.kernel.org/buglist.cgi?component=pm-graph&product=Tools
++T: git git://github.com/intel/pm-graph
++F: tools/power/pm-graph
++
++PMBUS HARDWARE MONITORING DRIVERS
++M: Guenter Roeck <linux@roeck-us.net>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++W: http://hwmon.wiki.kernel.org/
++W: http://www.roeck-us.net/linux/drivers/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git
++F: Documentation/devicetree/bindings/hwmon/ibm,cffps1.txt
++F: Documentation/devicetree/bindings/hwmon/ltc2978.txt
++F: Documentation/devicetree/bindings/hwmon/max31785.txt
++F: Documentation/hwmon/adm1275.rst
++F: Documentation/hwmon/ibm-cffps.rst
++F: Documentation/hwmon/ir35221.rst
++F: Documentation/hwmon/lm25066.rst
++F: Documentation/hwmon/ltc2978.rst
++F: Documentation/hwmon/ltc3815.rst
++F: Documentation/hwmon/max16064.rst
++F: Documentation/hwmon/max20751.rst
++F: Documentation/hwmon/max31785.rst
++F: Documentation/hwmon/max34440.rst
++F: Documentation/hwmon/max8688.rst
++F: Documentation/hwmon/pmbus-core.rst
++F: Documentation/hwmon/pmbus.rst
++F: Documentation/hwmon/tps40422.rst
++F: Documentation/hwmon/ucd9000.rst
++F: Documentation/hwmon/ucd9200.rst
++F: Documentation/hwmon/zl6100.rst
++F: drivers/hwmon/pmbus/
++F: include/linux/pmbus.h
++
++PMC SIERRA MaxRAID DRIVER
++L: linux-scsi@vger.kernel.org
++S: Orphan
++W: http://www.pmc-sierra.com/
++F: drivers/scsi/pmcraid.*
++
++PMC SIERRA PM8001 DRIVER
++M: Jack Wang <jinpu.wang@cloud.ionos.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: drivers/scsi/pm8001/
++
++PNI RM3100 IIO DRIVER
++M: Song Qiang <songqiang1304521@gmail.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/iio/magnetometer/pni,rm3100.yaml
++F: drivers/iio/magnetometer/rm3100*
++
++PNP SUPPORT
++M: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
++L: linux-acpi@vger.kernel.org
++S: Maintained
++F: drivers/pnp/
++F: include/linux/pnp.h
++
++POSIX CLOCKS and TIMERS
++M: Thomas Gleixner <tglx@linutronix.de>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/core
++F: fs/timerfd.c
++F: include/linux/time_namespace.h
++F: include/linux/timer*
++F: kernel/time/*timer*
++F: kernel/time/namespace.c
++
++POWER MANAGEMENT CORE
++M: "Rafael J. Wysocki" <rafael@kernel.org>
++L: linux-pm@vger.kernel.org
++S: Supported
++B: https://bugzilla.kernel.org
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
++F: drivers/base/power/
++F: drivers/powercap/
++F: include/linux/intel_rapl.h
++F: include/linux/pm.h
++F: include/linux/pm_*
++F: include/linux/powercap.h
++F: kernel/configs/nopm.config
++
++DYNAMIC THERMAL POWER MANAGEMENT (DTPM)
++M: Daniel Lezcano <daniel.lezcano@kernel.org>
++L: linux-pm@vger.kernel.org
++S: Supported
++B: https://bugzilla.kernel.org
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
++F: drivers/powercap/dtpm*
++F: include/linux/dtpm.h
++
++POWER STATE COORDINATION INTERFACE (PSCI)
++M: Mark Rutland <mark.rutland@arm.com>
++M: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: drivers/firmware/psci/
++F: include/linux/psci.h
++F: include/uapi/linux/psci.h
++
++POWER SUPPLY CLASS/SUBSYSTEM and DRIVERS
++M: Sebastian Reichel <sre@kernel.org>
++L: linux-pm@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply.git
++F: Documentation/ABI/testing/sysfs-class-power
++F: Documentation/devicetree/bindings/power/supply/
++F: drivers/power/supply/
++F: include/linux/power/
++F: include/linux/power_supply.h
++
++POWERNV OPERATOR PANEL LCD DISPLAY DRIVER
++M: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
++L: linuxppc-dev@lists.ozlabs.org
++S: Maintained
++F: drivers/char/powernv-op-panel.c
++
++PPP OVER ATM (RFC 2364)
++M: Mitchell Blank Jr <mitch@sfgoth.com>
++S: Maintained
++F: include/uapi/linux/atmppp.h
++F: net/atm/pppoatm.c
++
++PPP OVER ETHERNET
++M: Michal Ostrowski <mostrows@earthlink.net>
++S: Maintained
++F: drivers/net/ppp/pppoe.c
++F: drivers/net/ppp/pppox.c
++
++PPP OVER L2TP
++M: James Chapman <jchapman@katalix.com>
++S: Maintained
++F: include/linux/if_pppol2tp.h
++F: include/uapi/linux/if_pppol2tp.h
++F: net/l2tp/l2tp_ppp.c
++
++PPP PROTOCOL DRIVERS AND COMPRESSORS
++M: Paul Mackerras <paulus@samba.org>
++L: linux-ppp@vger.kernel.org
++S: Maintained
++F: drivers/net/ppp/ppp_*
++
++PPS SUPPORT
++M: Rodolfo Giometti <giometti@enneenne.com>
++L: linuxpps@ml.enneenne.com (subscribers-only)
++S: Maintained
++W: http://wiki.enneenne.com/index.php/LinuxPPS_support
++F: Documentation/ABI/testing/sysfs-pps
++F: Documentation/devicetree/bindings/pps/pps-gpio.txt
++F: Documentation/driver-api/pps.rst
++F: drivers/pps/
++F: include/linux/pps*.h
++F: include/uapi/linux/pps.h
++
++PPTP DRIVER
++M: Dmitry Kozlov <xeb@mail.ru>
++L: netdev@vger.kernel.org
++S: Maintained
++W: http://sourceforge.net/projects/accel-pptp
++F: drivers/net/ppp/pptp.c
++
++PRESSURE STALL INFORMATION (PSI)
++M: Johannes Weiner <hannes@cmpxchg.org>
++S: Maintained
++F: include/linux/psi*
++F: kernel/sched/psi.c
++
++PRINTK
++M: Petr Mladek <pmladek@suse.com>
++M: Sergey Senozhatsky <senozhatsky@chromium.org>
++R: Steven Rostedt <rostedt@goodmis.org>
++R: John Ogness <john.ogness@linutronix.de>
++S: Maintained
++F: include/linux/printk.h
++F: kernel/printk/
++
++PRINTK INDEXING
++R: Chris Down <chris@chrisdown.name>
++S: Maintained
++F: kernel/printk/index.c
++
++PROC FILESYSTEM
++L: linux-kernel@vger.kernel.org
++L: linux-fsdevel@vger.kernel.org
++S: Maintained
++F: Documentation/filesystems/proc.rst
++F: fs/proc/
++F: include/linux/proc_fs.h
++F: tools/testing/selftests/proc/
++
++PROC SYSCTL
++M: Luis Chamberlain <mcgrof@kernel.org>
++M: Kees Cook <keescook@chromium.org>
++M: Iurii Zaikin <yzaikin@google.com>
++L: linux-kernel@vger.kernel.org
++L: linux-fsdevel@vger.kernel.org
++S: Maintained
++F: fs/proc/proc_sysctl.c
++F: include/linux/sysctl.h
++F: kernel/sysctl-test.c
++F: kernel/sysctl.c
++F: tools/testing/selftests/sysctl/
++
++PS3 NETWORK SUPPORT
++M: Geoff Levand <geoff@infradead.org>
++L: netdev@vger.kernel.org
++L: linuxppc-dev@lists.ozlabs.org
++S: Maintained
++F: drivers/net/ethernet/toshiba/ps3_gelic_net.*
++
++PS3 PLATFORM SUPPORT
++M: Geoff Levand <geoff@infradead.org>
++L: linuxppc-dev@lists.ozlabs.org
++S: Maintained
++F: arch/powerpc/boot/ps3*
++F: arch/powerpc/include/asm/lv1call.h
++F: arch/powerpc/include/asm/ps3*.h
++F: arch/powerpc/platforms/ps3/
++F: drivers/*/ps3*
++F: drivers/ps3/
++F: drivers/rtc/rtc-ps3.c
++F: drivers/usb/host/*ps3.c
++F: sound/ppc/snd_ps3*
++
++PS3VRAM DRIVER
++M: Jim Paris <jim@jtan.com>
++M: Geoff Levand <geoff@infradead.org>
++L: linuxppc-dev@lists.ozlabs.org
++S: Maintained
++F: drivers/block/ps3vram.c
++
++PSAMPLE PACKET SAMPLING SUPPORT
++M: Yotam Gigi <yotam.gi@gmail.com>
++S: Maintained
++F: include/net/psample.h
++F: include/uapi/linux/psample.h
++F: net/psample
++
++PSTORE FILESYSTEM
++M: Kees Cook <keescook@chromium.org>
++M: Anton Vorontsov <anton@enomsg.org>
++M: Colin Cross <ccross@android.com>
++M: Tony Luck <tony.luck@intel.com>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/pstore
++F: Documentation/admin-guide/ramoops.rst
++F: Documentation/admin-guide/pstore-blk.rst
++F: Documentation/devicetree/bindings/reserved-memory/ramoops.txt
++F: drivers/acpi/apei/erst.c
++F: drivers/firmware/efi/efi-pstore.c
++F: fs/pstore/
++F: include/linux/pstore*
++K: \b(pstore|ramoops)
++
++PTP HARDWARE CLOCK SUPPORT
++M: Richard Cochran <richardcochran@gmail.com>
++L: netdev@vger.kernel.org
++S: Maintained
++W: http://linuxptp.sourceforge.net/
++F: Documentation/ABI/testing/sysfs-ptp
++F: Documentation/driver-api/ptp.rst
++F: drivers/net/phy/dp83640*
++F: drivers/ptp/*
++F: include/linux/ptp_cl*
++
++PTP VIRTUAL CLOCK SUPPORT
++M: Yangbo Lu <yangbo.lu@nxp.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/ptp/ptp_vclock.c
++F: net/ethtool/phc_vclocks.c
++
++PTRACE SUPPORT
++M: Oleg Nesterov <oleg@redhat.com>
++S: Maintained
++F: arch/*/*/ptrace*.c
++F: arch/*/include/asm/ptrace*.h
++F: arch/*/ptrace*.c
++F: include/asm-generic/syscall.h
++F: include/linux/ptrace.h
++F: include/linux/regset.h
++F: include/linux/tracehook.h
++F: include/uapi/linux/ptrace.h
++F: include/uapi/linux/ptrace.h
++F: kernel/ptrace.c
++
++PULSE8-CEC DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/admin-guide/media/pulse8-cec.rst
++F: drivers/media/cec/usb/pulse8/
++
++PVRUSB2 VIDEO4LINUX DRIVER
++M: Mike Isely <isely@pobox.com>
++L: pvrusb2@isely.net (subscribers-only)
++L: linux-media@vger.kernel.org
++S: Maintained
++W: http://www.isely.net/pvrusb2/
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/driver-api/media/drivers/pvrusb2*
++F: drivers/media/usb/pvrusb2/
++
++PWC WEBCAM DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/usb/pwc/*
++F: include/trace/events/pwc.h
++
++PWM FAN DRIVER
++M: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
++L: linux-hwmon@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/hwmon/pwm-fan.txt
++F: Documentation/hwmon/pwm-fan.rst
++F: drivers/hwmon/pwm-fan.c
++
++PWM IR Transmitter
++M: Sean Young <sean@mess.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/rc/pwm-ir-tx.c
++
++PWM SUBSYSTEM
++M: Thierry Reding <thierry.reding@gmail.com>
++R: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
++M: Lee Jones <lee.jones@linaro.org>
++L: linux-pwm@vger.kernel.org
++S: Maintained
++Q: https://patchwork.ozlabs.org/project/linux-pwm/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm.git
++F: Documentation/devicetree/bindings/gpio/gpio-mvebu.txt
++F: Documentation/devicetree/bindings/pwm/
++F: Documentation/driver-api/pwm.rst
++F: drivers/gpio/gpio-mvebu.c
++F: drivers/pwm/
++F: drivers/video/backlight/pwm_bl.c
++F: include/linux/pwm.h
++F: include/linux/pwm_backlight.h
++K: pwm_(config|apply_state|ops)
++
++PXA GPIO DRIVER
++M: Robert Jarzmik <robert.jarzmik@free.fr>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: drivers/gpio/gpio-pxa.c
++
++PXA MMCI DRIVER
++S: Orphan
++
++PXA RTC DRIVER
++M: Robert Jarzmik <robert.jarzmik@free.fr>
++L: linux-rtc@vger.kernel.org
++S: Maintained
++
++PXA2xx/PXA3xx SUPPORT
++M: Daniel Mack <daniel@zonque.org>
++M: Haojian Zhuang <haojian.zhuang@gmail.com>
++M: Robert Jarzmik <robert.jarzmik@free.fr>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://github.com/hzhuang1/linux.git
++T: git git://github.com/rjarzmik/linux.git
++F: arch/arm/boot/dts/pxa*
++F: arch/arm/mach-pxa/
++F: drivers/dma/pxa*
++F: drivers/pcmcia/pxa2xx*
++F: drivers/pinctrl/pxa/
++F: drivers/spi/spi-pxa2xx*
++F: drivers/usb/gadget/udc/pxa2*
++F: include/sound/pxa2xx-lib.h
++F: sound/arm/pxa*
++F: sound/soc/pxa/
++
++QAT DRIVER
++M: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
++L: qat-linux@intel.com
++S: Supported
++F: drivers/crypto/qat/
++
++QCOM AUDIO (ASoC) DRIVERS
++M: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
++M: Banajit Goswami <bgoswami@codeaurora.org>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Supported
++F: sound/soc/codecs/lpass-va-macro.c
++F: sound/soc/codecs/lpass-wsa-macro.*
++F: sound/soc/codecs/msm8916-wcd-analog.c
++F: sound/soc/codecs/msm8916-wcd-digital.c
++F: sound/soc/codecs/wcd9335.*
++F: sound/soc/codecs/wcd934x.c
++F: sound/soc/codecs/wcd-clsh-v2.*
++F: sound/soc/codecs/wsa881x.c
++F: sound/soc/qcom/
++
++QCOM IPA DRIVER
++M: Alex Elder <elder@kernel.org>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ipa/
++
++QEMU MACHINE EMULATOR AND VIRTUALIZER SUPPORT
++M: Gabriel Somlo <somlo@cmu.edu>
++M: "Michael S. Tsirkin" <mst@redhat.com>
++L: qemu-devel@nongnu.org
++S: Maintained
++F: drivers/firmware/qemu_fw_cfg.c
++F: include/uapi/linux/qemu_fw_cfg.h
++
++QIB DRIVER
++M: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
++M: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
++L: linux-rdma@vger.kernel.org
++S: Supported
++F: drivers/infiniband/hw/qib/
++
++QLOGIC QL41xxx FCOE DRIVER
++M: Saurav Kashyap <skashyap@marvell.com>
++M: Javed Hasan <jhasan@marvell.com>
++M: GR-QLogic-Storage-Upstream@marvell.com
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: drivers/scsi/qedf/
++
++QLOGIC QL41xxx ISCSI DRIVER
++M: Nilesh Javali <njavali@marvell.com>
++M: Manish Rangankar <mrangankar@marvell.com>
++M: GR-QLogic-Storage-Upstream@marvell.com
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: drivers/scsi/qedi/
++
++QLOGIC QL4xxx ETHERNET DRIVER
++M: Ariel Elior <aelior@marvell.com>
++M: GR-everest-linux-l2@marvell.com
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/qlogic/qed/
++F: drivers/net/ethernet/qlogic/qede/
++F: include/linux/qed/
++
++QLOGIC QL4xxx RDMA DRIVER
++M: Michal Kalderon <mkalderon@marvell.com>
++M: Ariel Elior <aelior@marvell.com>
++L: linux-rdma@vger.kernel.org
++S: Supported
++F: drivers/infiniband/hw/qedr/
++F: include/uapi/rdma/qedr-abi.h
++
++QLOGIC QLA1280 SCSI DRIVER
++M: Michael Reed <mdr@sgi.com>
++L: linux-scsi@vger.kernel.org
++S: Maintained
++F: drivers/scsi/qla1280.[ch]
++
++QLOGIC QLA2XXX FC-SCSI DRIVER
++M: Nilesh Javali <njavali@marvell.com>
++M: GR-QLogic-Storage-Upstream@marvell.com
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: drivers/scsi/qla2xxx/
++
++QLOGIC QLA3XXX NETWORK DRIVER
++M: GR-Linux-NIC-Dev@marvell.com
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/qlogic/qla3xxx.*
++
++QLOGIC QLA4XXX iSCSI DRIVER
++M: Nilesh Javali <njavali@marvell.com>
++M: Manish Rangankar <mrangankar@marvell.com>
++M: GR-QLogic-Storage-Upstream@marvell.com
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: drivers/scsi/qla4xxx/
++
++QLOGIC QLCNIC (1/10)Gb ETHERNET DRIVER
++M: Shahed Shaikh <shshaikh@marvell.com>
++M: Manish Chopra <manishc@marvell.com>
++M: GR-Linux-NIC-Dev@marvell.com
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/qlogic/qlcnic/
++
++QLOGIC QLGE 10Gb ETHERNET DRIVER
++M: Manish Chopra <manishc@marvell.com>
++M: GR-Linux-NIC-Dev@marvell.com
++M: Coiby Xu <coiby.xu@gmail.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: Documentation/networking/device_drivers/qlogic/qlge.rst
++F: drivers/staging/qlge/
++
++QM1D1B0004 MEDIA DRIVER
++M: Akihiro Tsukada <tskd08@gmail.com>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++F: drivers/media/tuners/qm1d1b0004*
++
++QM1D1C0042 MEDIA DRIVER
++M: Akihiro Tsukada <tskd08@gmail.com>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++F: drivers/media/tuners/qm1d1c0042*
++
++QNX4 FILESYSTEM
++M: Anders Larsen <al@alarsen.net>
++S: Maintained
++W: http://www.alarsen.net/linux/qnx4fs/
++F: fs/qnx4/
++F: include/uapi/linux/qnx4_fs.h
++F: include/uapi/linux/qnxtypes.h
++
++QORIQ DPAA2 FSL-MC BUS DRIVER
++M: Stuart Yoder <stuyoder@gmail.com>
++M: Laurentiu Tudor <laurentiu.tudor@nxp.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/stable/sysfs-bus-fsl-mc
++F: Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt
++F: Documentation/networking/device_drivers/ethernet/freescale/dpaa2/overview.rst
++F: drivers/bus/fsl-mc/
++F: include/uapi/linux/fsl_mc.h
++
++QT1010 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/tuners/qt1010*
++
++QUALCOMM ATHEROS ATH10K WIRELESS DRIVER
++M: Kalle Valo <kvalo@codeaurora.org>
++L: ath10k@lists.infradead.org
++S: Supported
++W: https://wireless.wiki.kernel.org/en/users/Drivers/ath10k
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
++F: drivers/net/wireless/ath/ath10k/
++
++QUALCOMM ATHEROS ATH11K WIRELESS DRIVER
++M: Kalle Valo <kvalo@codeaurora.org>
++L: ath11k@lists.infradead.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
++F: drivers/net/wireless/ath/ath11k/
++
++QUALCOMM ATHEROS ATH9K WIRELESS DRIVER
++M: ath9k-devel@qca.qualcomm.com
++L: linux-wireless@vger.kernel.org
++S: Supported
++W: https://wireless.wiki.kernel.org/en/users/Drivers/ath9k
++F: drivers/net/wireless/ath/ath9k/
++
++QUALCOMM CAMERA SUBSYSTEM DRIVER
++M: Robert Foss <robert.foss@linaro.org>
++M: Todor Tomov <todor.too@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: Documentation/admin-guide/media/qcom_camss.rst
++F: Documentation/devicetree/bindings/media/*camss*
++F: drivers/media/platform/qcom/camss/
++
++QUALCOMM CORE POWER REDUCTION (CPR) AVS DRIVER
++M: Niklas Cassel <nks@flawful.org>
++L: linux-pm@vger.kernel.org
++L: linux-arm-msm@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/power/avs/qcom,cpr.txt
++F: drivers/soc/qcom/cpr.c
++
++QUALCOMM CPUFREQ DRIVER MSM8996/APQ8096
++M: Ilia Lin <ilia.lin@kernel.org>
++L: linux-pm@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/opp/qcom-nvmem-cpufreq.txt
++F: drivers/cpufreq/qcom-cpufreq-nvmem.c
++
++QUALCOMM CRYPTO DRIVERS
++M: Thara Gopinath <thara.gopinath@linaro.org>
++L: linux-crypto@vger.kernel.org
++L: linux-arm-msm@vger.kernel.org
++S: Maintained
++F: drivers/crypto/qce/
++
++QUALCOMM EMAC GIGABIT ETHERNET DRIVER
++M: Timur Tabi <timur@kernel.org>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/qualcomm/emac/
++
++QUALCOMM ETHQOS ETHERNET DRIVER
++M: Vinod Koul <vkoul@kernel.org>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/qcom,ethqos.txt
++F: drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
++
++QUALCOMM GENERIC INTERFACE I2C DRIVER
++M: Akash Asthana <akashast@codeaurora.org>
++M: Mukesh Savaliya <msavaliy@codeaurora.org>
++L: linux-i2c@vger.kernel.org
++L: linux-arm-msm@vger.kernel.org
++S: Supported
++F: drivers/i2c/busses/i2c-qcom-geni.c
++
++QUALCOMM HEXAGON ARCHITECTURE
++M: Brian Cain <bcain@codeaurora.org>
++L: linux-hexagon@vger.kernel.org
++S: Supported
++F: arch/hexagon/
++
++QUALCOMM HIDMA DRIVER
++M: Sinan Kaya <okaya@kernel.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++L: linux-arm-msm@vger.kernel.org
++L: dmaengine@vger.kernel.org
++S: Supported
++F: drivers/dma/qcom/hidma*
++
++QUALCOMM I2C CCI DRIVER
++M: Loic Poulain <loic.poulain@linaro.org>
++M: Robert Foss <robert.foss@linaro.org>
++L: linux-i2c@vger.kernel.org
++L: linux-arm-msm@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt
++F: drivers/i2c/busses/i2c-qcom-cci.c
++
++QUALCOMM IOMMU
++M: Rob Clark <robdclark@gmail.com>
++L: iommu@lists.linux-foundation.org
++L: linux-arm-msm@vger.kernel.org
++S: Maintained
++F: drivers/iommu/arm/arm-smmu/qcom_iommu.c
++
++QUALCOMM IPC ROUTER (QRTR) DRIVER
++M: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
++L: linux-arm-msm@vger.kernel.org
++S: Maintained
++F: include/trace/events/qrtr.h
++F: include/uapi/linux/qrtr.h
++F: net/qrtr/
++
++QUALCOMM IPCC MAILBOX DRIVER
++M: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
++L: linux-arm-msm@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/mailbox/qcom-ipcc.yaml
++F: drivers/mailbox/qcom-ipcc.c
++F: include/dt-bindings/mailbox/qcom-ipcc.h
++
++QUALCOMM IPQ4019 USB PHY DRIVER
++M: Robert Marko <robert.marko@sartura.hr>
++M: Luka Perkov <luka.perkov@sartura.hr>
++L: linux-arm-msm@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/phy/qcom-usb-ipq4019-phy.yaml
++F: drivers/phy/qualcomm/phy-qcom-ipq4019-usb.c
++
++QUALCOMM IPQ4019 VQMMC REGULATOR DRIVER
++M: Robert Marko <robert.marko@sartura.hr>
++M: Luka Perkov <luka.perkov@sartura.hr>
++L: linux-arm-msm@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/regulator/vqmmc-ipq4019-regulator.yaml
++F: drivers/regulator/vqmmc-ipq4019-regulator.c
++
++QUALCOMM RMNET DRIVER
++M: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
++M: Sean Tranchetti <stranche@codeaurora.org>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/networking/device_drivers/cellular/qualcomm/rmnet.rst
++F: drivers/net/ethernet/qualcomm/rmnet/
++F: include/linux/if_rmnet.h
++
++QUALCOMM TSENS THERMAL DRIVER
++M: Amit Kucheria <amitk@kernel.org>
++M: Thara Gopinath <thara.gopinath@linaro.org>
++L: linux-pm@vger.kernel.org
++L: linux-arm-msm@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
++F: drivers/thermal/qcom/
++
++QUALCOMM VENUS VIDEO ACCELERATOR DRIVER
++M: Stanimir Varbanov <stanimir.varbanov@linaro.org>
++L: linux-media@vger.kernel.org
++L: linux-arm-msm@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/*venus*
++F: drivers/media/platform/qcom/venus/
++
++QUALCOMM WCN36XX WIRELESS DRIVER
++M: Kalle Valo <kvalo@codeaurora.org>
++L: wcn36xx@lists.infradead.org
++S: Supported
++W: https://wireless.wiki.kernel.org/en/users/Drivers/wcn36xx
++T: git git://github.com/KrasnikovEugene/wcn36xx.git
++F: drivers/net/wireless/ath/wcn36xx/
++
++QUANTENNA QTNFMAC WIRELESS DRIVER
++M: Igor Mitsyanko <imitsyanko@quantenna.com>
++R: Sergey Matyukevich <geomatsi@gmail.com>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++F: drivers/net/wireless/quantenna
++
++RADEON and AMDGPU DRM DRIVERS
++M: Alex Deucher <alexander.deucher@amd.com>
++M: Christian König <christian.koenig@amd.com>
++M: Pan, Xinhui <Xinhui.Pan@amd.com>
++L: amd-gfx@lists.freedesktop.org
++S: Supported
++T: git https://gitlab.freedesktop.org/agd5f/linux.git
++B: https://gitlab.freedesktop.org/drm/amd/-/issues
++C: irc://irc.oftc.net/radeon
++F: drivers/gpu/drm/amd/
++F: drivers/gpu/drm/radeon/
++F: include/uapi/drm/amdgpu_drm.h
++F: include/uapi/drm/radeon_drm.h
++
++RADEON FRAMEBUFFER DISPLAY DRIVER
++M: Benjamin Herrenschmidt <benh@kernel.crashing.org>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++F: drivers/video/fbdev/aty/radeon*
++F: include/uapi/linux/radeonfb.h
++
++RADIOSHARK RADIO DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/radio-shark.c
++
++RADIOSHARK2 RADIO DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/radio-shark2.c
++F: drivers/media/radio/radio-tea5777.c
++
++RADOS BLOCK DEVICE (RBD)
++M: Ilya Dryomov <idryomov@gmail.com>
++R: Dongsheng Yang <dongsheng.yang@easystack.cn>
++L: ceph-devel@vger.kernel.org
++S: Supported
++W: http://ceph.com/
++T: git git://github.com/ceph/ceph-client.git
++F: Documentation/ABI/testing/sysfs-bus-rbd
++F: drivers/block/rbd.c
++F: drivers/block/rbd_types.h
++
++RAGE128 FRAMEBUFFER DISPLAY DRIVER
++M: Paul Mackerras <paulus@samba.org>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++F: drivers/video/fbdev/aty/aty128fb.c
++
++RAINSHADOW-CEC DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/cec/usb/rainshadow/
++
++RALINK MIPS ARCHITECTURE
++M: John Crispin <john@phrozen.org>
++L: linux-mips@vger.kernel.org
++S: Maintained
++F: arch/mips/ralink
++
++RALINK RT2X00 WIRELESS LAN DRIVER
++M: Stanislaw Gruszka <stf_xl@wp.pl>
++M: Helmut Schaa <helmut.schaa@googlemail.com>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++F: drivers/net/wireless/ralink/rt2x00/
++
++RAMDISK RAM BLOCK DEVICE DRIVER
++M: Jens Axboe <axboe@kernel.dk>
++S: Maintained
++F: Documentation/admin-guide/blockdev/ramdisk.rst
++F: drivers/block/brd.c
++
++RANCHU VIRTUAL BOARD FOR MIPS
++M: Miodrag Dinic <miodrag.dinic@mips.com>
++L: linux-mips@vger.kernel.org
++S: Supported
++F: arch/mips/configs/generic/board-ranchu.config
++F: arch/mips/generic/board-ranchu.c
++
++RANDOM NUMBER DRIVER
++M: "Theodore Ts'o" <tytso@mit.edu>
++S: Maintained
++F: drivers/char/random.c
++
++RAPIDIO SUBSYSTEM
++M: Matt Porter <mporter@kernel.crashing.org>
++M: Alexandre Bounine <alex.bou9@gmail.com>
++S: Maintained
++F: drivers/rapidio/
++
++RAS INFRASTRUCTURE
++M: Tony Luck <tony.luck@intel.com>
++M: Borislav Petkov <bp@alien8.de>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: Documentation/admin-guide/ras.rst
++F: drivers/ras/
++F: include/linux/ras.h
++F: include/ras/ras_event.h
++
++RAYLINK/WEBGEAR 802.11 WIRELESS LAN DRIVER
++L: linux-wireless@vger.kernel.org
++S: Orphan
++F: drivers/net/wireless/ray*
++
++RC-CORE / LIRC FRAMEWORK
++M: Sean Young <sean@mess.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: http://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/driver-api/media/rc-core.rst
++F: Documentation/userspace-api/media/rc/
++F: drivers/media/rc/
++F: include/media/rc-map.h
++F: include/media/rc-core.h
++F: include/uapi/linux/lirc.h
++
++RCMM REMOTE CONTROLS DECODER
++M: Patrick Lerda <patrick9876@free.fr>
++S: Maintained
++F: drivers/media/rc/ir-rcmm-decoder.c
++
++RCUTORTURE TEST FRAMEWORK
++M: "Paul E. McKenney" <paulmck@kernel.org>
++M: Josh Triplett <josh@joshtriplett.org>
++R: Steven Rostedt <rostedt@goodmis.org>
++R: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
++R: Lai Jiangshan <jiangshanlai@gmail.com>
++L: rcu@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev
++F: tools/testing/selftests/rcutorture
++
++RDACM20 Camera Sensor
++M: Jacopo Mondi <jacopo+renesas@jmondi.org>
++M: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
++M: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
++M: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/media/i2c/imi,rdacm2x-gmsl.yaml
++F: drivers/media/i2c/max9271.c
++F: drivers/media/i2c/max9271.h
++F: drivers/media/i2c/rdacm20.c
++
++RDACM21 Camera Sensor
++M: Jacopo Mondi <jacopo+renesas@jmondi.org>
++M: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
++M: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
++M: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/media/i2c/imi,rdacm2x-gmsl.yaml
++F: drivers/media/i2c/max9271.c
++F: drivers/media/i2c/max9271.h
++F: drivers/media/i2c/rdacm21.c
++
++RDC R-321X SoC
++M: Florian Fainelli <florian@openwrt.org>
++S: Maintained
++
++RDC R6040 FAST ETHERNET DRIVER
++M: Florian Fainelli <f.fainelli@gmail.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/rdc/r6040.c
++
++RDMAVT - RDMA verbs software
++M: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
++M: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
++L: linux-rdma@vger.kernel.org
++S: Supported
++F: drivers/infiniband/sw/rdmavt
++
++RDS - RELIABLE DATAGRAM SOCKETS
++M: Santosh Shilimkar <santosh.shilimkar@oracle.com>
++L: netdev@vger.kernel.org
++L: linux-rdma@vger.kernel.org
++L: rds-devel@oss.oracle.com (moderated for non-subscribers)
++S: Supported
++W: https://oss.oracle.com/projects/rds/
++F: Documentation/networking/rds.rst
++F: net/rds/
++
++RDT - RESOURCE ALLOCATION
++M: Fenghua Yu <fenghua.yu@intel.com>
++M: Reinette Chatre <reinette.chatre@intel.com>
++L: linux-kernel@vger.kernel.org
++S: Supported
++F: Documentation/x86/resctrl*
++F: arch/x86/include/asm/resctrl.h
++F: arch/x86/kernel/cpu/resctrl/
++F: tools/testing/selftests/resctrl/
++
++READ-COPY UPDATE (RCU)
++M: "Paul E. McKenney" <paulmck@kernel.org>
++M: Josh Triplett <josh@joshtriplett.org>
++R: Steven Rostedt <rostedt@goodmis.org>
++R: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
++R: Lai Jiangshan <jiangshanlai@gmail.com>
++R: Joel Fernandes <joel@joelfernandes.org>
++L: rcu@vger.kernel.org
++S: Supported
++W: http://www.rdrop.com/users/paulmck/RCU/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev
++F: Documentation/RCU/
++F: include/linux/rcu*
++F: kernel/rcu/
++X: Documentation/RCU/torture.rst
++X: include/linux/srcu*.h
++X: kernel/rcu/srcu*.c
++
++REAL TIME CLOCK (RTC) SUBSYSTEM
++M: Alessandro Zummo <a.zummo@towertech.it>
++M: Alexandre Belloni <alexandre.belloni@bootlin.com>
++L: linux-rtc@vger.kernel.org
++S: Maintained
++Q: http://patchwork.ozlabs.org/project/rtc-linux/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux.git
++F: Documentation/admin-guide/rtc.rst
++F: Documentation/devicetree/bindings/rtc/
++F: drivers/rtc/
++F: include/linux/platform_data/rtc-*
++F: include/linux/rtc.h
++F: include/linux/rtc/
++F: include/uapi/linux/rtc.h
++F: tools/testing/selftests/rtc/
++
++REALTEK AUDIO CODECS
++M: Oder Chiou <oder_chiou@realtek.com>
++S: Maintained
++F: include/sound/rt*.h
++F: sound/soc/codecs/rt*
++
++REALTEK RTL83xx SMI DSA ROUTER CHIPS
++M: Linus Walleij <linus.walleij@linaro.org>
++S: Maintained
++F: Documentation/devicetree/bindings/net/dsa/realtek-smi.txt
++F: drivers/net/dsa/realtek-smi*
++F: drivers/net/dsa/rtl83*
++
++REALTEK WIRELESS DRIVER (rtlwifi family)
++M: Ping-Ke Shih <pkshih@realtek.com>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++W: https://wireless.wiki.kernel.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-testing.git
++F: drivers/net/wireless/realtek/rtlwifi/
++
++REALTEK WIRELESS DRIVER (rtw88)
++M: Yan-Hsuan Chuang <tony0620emma@gmail.com>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++F: drivers/net/wireless/realtek/rtw88/
++
++REDPINE WIRELESS DRIVER
++M: Amitkumar Karwar <amitkarwar@gmail.com>
++M: Siva Rebbagondla <siva8118@gmail.com>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++F: drivers/net/wireless/rsi/
++
++REGISTER MAP ABSTRACTION
++M: Mark Brown <broonie@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap.git
++F: Documentation/devicetree/bindings/regmap/
++F: drivers/base/regmap/
++F: include/linux/regmap.h
++
++REISERFS FILE SYSTEM
++L: reiserfs-devel@vger.kernel.org
++S: Supported
++F: fs/reiserfs/
++
++REMOTE PROCESSOR (REMOTEPROC) SUBSYSTEM
++M: Ohad Ben-Cohen <ohad@wizery.com>
++M: Bjorn Andersson <bjorn.andersson@linaro.org>
++M: Mathieu Poirier <mathieu.poirier@linaro.org>
++L: linux-remoteproc@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc.git rproc-next
++F: Documentation/ABI/testing/sysfs-class-remoteproc
++F: Documentation/devicetree/bindings/remoteproc/
++F: Documentation/staging/remoteproc.rst
++F: drivers/remoteproc/
++F: include/linux/remoteproc.h
++F: include/linux/remoteproc/
++
++REMOTE PROCESSOR MESSAGING (RPMSG) SUBSYSTEM
++M: Ohad Ben-Cohen <ohad@wizery.com>
++M: Bjorn Andersson <bjorn.andersson@linaro.org>
++M: Mathieu Poirier <mathieu.poirier@linaro.org>
++L: linux-remoteproc@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc.git rpmsg-next
++F: Documentation/ABI/testing/sysfs-bus-rpmsg
++F: Documentation/staging/rpmsg.rst
++F: drivers/rpmsg/
++F: include/linux/rpmsg.h
++F: include/linux/rpmsg/
++F: include/uapi/linux/rpmsg.h
++F: samples/rpmsg/
++
++REMOTE PROCESSOR MESSAGING (RPMSG) WWAN CONTROL DRIVER
++M: Stephan Gerhold <stephan@gerhold.net>
++L: netdev@vger.kernel.org
++L: linux-remoteproc@vger.kernel.org
++S: Maintained
++F: drivers/net/wwan/rpmsg_wwan_ctrl.c
++
++RENESAS CLOCK DRIVERS
++M: Geert Uytterhoeven <geert+renesas@glider.be>
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git renesas-clk
++F: Documentation/devicetree/bindings/clock/renesas,*
++F: drivers/clk/renesas/
++
++RENESAS EMEV2 I2C DRIVER
++M: Wolfram Sang <wsa+renesas@sang-engineering.com>
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/i2c/renesas,iic-emev2.yaml
++F: drivers/i2c/busses/i2c-emev2.c
++
++RENESAS ETHERNET DRIVERS
++R: Sergey Shtylyov <s.shtylyov@omp.ru>
++L: netdev@vger.kernel.org
++L: linux-renesas-soc@vger.kernel.org
++F: Documentation/devicetree/bindings/net/renesas,*.yaml
++F: drivers/net/ethernet/renesas/
++F: include/linux/sh_eth.h
++
++RENESAS R-CAR GYROADC DRIVER
++M: Marek Vasut <marek.vasut@gmail.com>
++L: linux-iio@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/iio/adc/renesas,rcar-gyroadc.yaml
++F: drivers/iio/adc/rcar-gyroadc.c
++
++RENESAS R-CAR I2C DRIVERS
++M: Wolfram Sang <wsa+renesas@sang-engineering.com>
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/i2c/renesas,rcar-i2c.yaml
++F: Documentation/devicetree/bindings/i2c/renesas,rmobile-iic.yaml
++F: drivers/i2c/busses/i2c-rcar.c
++F: drivers/i2c/busses/i2c-sh_mobile.c
++
++RENESAS R-CAR THERMAL DRIVERS
++M: Niklas Söderlund <niklas.soderlund@ragnatech.se>
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/thermal/rcar-gen3-thermal.yaml
++F: Documentation/devicetree/bindings/thermal/rcar-thermal.yaml
++F: drivers/thermal/rcar_gen3_thermal.c
++F: drivers/thermal/rcar_thermal.c
++
++RENESAS RIIC DRIVER
++M: Chris Brandt <chris.brandt@renesas.com>
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/i2c/renesas,riic.yaml
++F: drivers/i2c/busses/i2c-riic.c
++
++RENESAS USB PHY DRIVER
++M: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
++L: linux-renesas-soc@vger.kernel.org
++S: Maintained
++F: drivers/phy/renesas/phy-rcar-gen3-usb*.c
++
++RENESAS RZ/G2L A/D DRIVER
++M: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
++L: linux-iio@vger.kernel.org
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml
++F: drivers/iio/adc/rzg2l_adc.c
++
++RESET CONTROLLER FRAMEWORK
++M: Philipp Zabel <p.zabel@pengutronix.de>
++S: Maintained
++T: git git://git.pengutronix.de/git/pza/linux
++F: Documentation/devicetree/bindings/reset/
++F: Documentation/driver-api/reset.rst
++F: drivers/reset/
++F: include/dt-bindings/reset/
++F: include/linux/reset-controller.h
++F: include/linux/reset.h
++F: include/linux/reset/
++K: \b(?:devm_|of_)?reset_control(?:ler_[a-z]+|_[a-z_]+)?\b
++
++RESTARTABLE SEQUENCES SUPPORT
++M: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
++M: Peter Zijlstra <peterz@infradead.org>
++M: "Paul E. McKenney" <paulmck@kernel.org>
++M: Boqun Feng <boqun.feng@gmail.com>
++L: linux-kernel@vger.kernel.org
++S: Supported
++F: include/trace/events/rseq.h
++F: include/uapi/linux/rseq.h
++F: kernel/rseq.c
++F: tools/testing/selftests/rseq/
++
++RFKILL
++M: Johannes Berg <johannes@sipsolutions.net>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++W: https://wireless.wiki.kernel.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git
++F: Documentation/ABI/stable/sysfs-class-rfkill
++F: Documentation/driver-api/rfkill.rst
++F: include/linux/rfkill.h
++F: include/uapi/linux/rfkill.h
++F: net/rfkill/
++
++RHASHTABLE
++M: Thomas Graf <tgraf@suug.ch>
++M: Herbert Xu <herbert@gondor.apana.org.au>
++L: netdev@vger.kernel.org
++S: Maintained
++F: include/linux/rhashtable-types.h
++F: include/linux/rhashtable.h
++F: lib/rhashtable.c
++F: lib/test_rhashtable.c
++
++RICOH R5C592 MEMORYSTICK DRIVER
++M: Maxim Levitsky <maximlevitsky@gmail.com>
++S: Maintained
++F: drivers/memstick/host/r592.*
++
++RICOH SMARTMEDIA/XD DRIVER
++M: Maxim Levitsky <maximlevitsky@gmail.com>
++S: Maintained
++F: drivers/mtd/nand/raw/r852.c
++F: drivers/mtd/nand/raw/r852.h
++
++RISC-V ARCHITECTURE
++M: Paul Walmsley <paul.walmsley@sifive.com>
++M: Palmer Dabbelt <palmer@dabbelt.com>
++M: Albert Ou <aou@eecs.berkeley.edu>
++L: linux-riscv@lists.infradead.org
++S: Supported
++P: Documentation/riscv/patch-acceptance.rst
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git
++F: arch/riscv/
++N: riscv
++K: riscv
++
++RISC-V/MICROCHIP POLARFIRE SOC SUPPORT
++M: Lewis Hanly <lewis.hanly@microchip.com>
++L: linux-riscv@lists.infradead.org
++S: Supported
++F: drivers/mailbox/mailbox-mpfs.c
++F: drivers/soc/microchip/
++F: include/soc/microchip/mpfs.h
++
++RNBD BLOCK DRIVERS
++M: Md. Haris Iqbal <haris.iqbal@ionos.com>
++M: Jack Wang <jinpu.wang@ionos.com>
++L: linux-block@vger.kernel.org
++S: Maintained
++F: drivers/block/rnbd/
++
++ROCCAT DRIVERS
++M: Stefan Achatz <erazor_de@users.sourceforge.net>
++S: Maintained
++W: http://sourceforge.net/projects/roccat/
++F: Documentation/ABI/*/sysfs-driver-hid-roccat*
++F: drivers/hid/hid-roccat*
++F: include/linux/hid-roccat*
++
++ROCKCHIP ISP V1 DRIVER
++M: Helen Koike <helen.koike@collabora.com>
++M: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
++L: linux-media@vger.kernel.org
++L: linux-rockchip@lists.infradead.org
++S: Maintained
++F: Documentation/admin-guide/media/rkisp1.rst
++F: Documentation/devicetree/bindings/media/rockchip-isp1.yaml
++F: Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst
++F: drivers/media/platform/rockchip/rkisp1
++F: include/uapi/linux/rkisp1-config.h
++
++ROCKCHIP RASTER 2D GRAPHIC ACCELERATION UNIT DRIVER
++M: Jacob Chen <jacob-chen@iotwrt.com>
++M: Ezequiel Garcia <ezequiel@collabora.com>
++L: linux-media@vger.kernel.org
++L: linux-rockchip@lists.infradead.org
++S: Maintained
++F: Documentation/devicetree/bindings/media/rockchip-rga.yaml
++F: drivers/media/platform/rockchip/rga/
++
++ROCKCHIP VIDEO DECODER DRIVER
++M: Ezequiel Garcia <ezequiel@collabora.com>
++L: linux-media@vger.kernel.org
++L: linux-rockchip@lists.infradead.org
++S: Maintained
++F: Documentation/devicetree/bindings/media/rockchip,vdec.yaml
++F: drivers/staging/media/rkvdec/
++
++ROCKER DRIVER
++M: Jiri Pirko <jiri@resnulli.us>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/rocker/
++
++ROCKETPORT EXPRESS/INFINITY DRIVER
++M: Kevin Cernekee <cernekee@gmail.com>
++L: linux-serial@vger.kernel.org
++S: Odd Fixes
++F: drivers/tty/serial/rp2.*
++
++ROHM BD99954 CHARGER IC
++R: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
++L: linux-power@fi.rohmeurope.com
++S: Supported
++F: drivers/power/supply/bd99954-charger.c
++F: drivers/power/supply/bd99954-charger.h
++
++ROHM BH1750 AMBIENT LIGHT SENSOR DRIVER
++M: Tomasz Duszynski <tduszyns@gmail.com>
++S: Maintained
++F: Documentation/devicetree/bindings/iio/light/bh1750.yaml
++F: drivers/iio/light/bh1750.c
++
++ROHM MULTIFUNCTION BD9571MWV-M PMIC DEVICE DRIVERS
++M: Marek Vasut <marek.vasut+renesas@gmail.com>
++L: linux-kernel@vger.kernel.org
++L: linux-renesas-soc@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/mfd/bd9571mwv.txt
++F: drivers/gpio/gpio-bd9571mwv.c
++F: drivers/mfd/bd9571mwv.c
++F: drivers/regulator/bd9571mwv-regulator.c
++F: include/linux/mfd/bd9571mwv.h
++
++ROHM POWER MANAGEMENT IC DEVICE DRIVERS
++R: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
++L: linux-power@fi.rohmeurope.com
++S: Supported
++F: Documentation/devicetree/bindings/mfd/rohm,bd70528-pmic.txt
++F: Documentation/devicetree/bindings/regulator/rohm,bd70528-regulator.txt
++F: drivers/clk/clk-bd718x7.c
++F: drivers/gpio/gpio-bd70528.c
++F: drivers/gpio/gpio-bd71815.c
++F: drivers/gpio/gpio-bd71828.c
++F: drivers/mfd/rohm-bd70528.c
++F: drivers/mfd/rohm-bd71828.c
++F: drivers/mfd/rohm-bd718x7.c
++F: drivers/mfd/rohm-bd9576.c
++F: drivers/power/supply/bd70528-charger.c
++F: drivers/regulator/bd70528-regulator.c
++F: drivers/regulator/bd71815-regulator.c
++F: drivers/regulator/bd71828-regulator.c
++F: drivers/regulator/bd718x7-regulator.c
++F: drivers/regulator/bd9576-regulator.c
++F: drivers/regulator/rohm-regulator.c
++F: drivers/rtc/rtc-bd70528.c
++F: drivers/watchdog/bd70528_wdt.c
++F: drivers/watchdog/bd9576_wdt.c
++F: include/linux/mfd/rohm-bd70528.h
++F: include/linux/mfd/rohm-bd71815.h
++F: include/linux/mfd/rohm-bd71828.h
++F: include/linux/mfd/rohm-bd718x7.h
++F: include/linux/mfd/rohm-bd957x.h
++F: include/linux/mfd/rohm-generic.h
++F: include/linux/mfd/rohm-shared.h
++
++ROSE NETWORK LAYER
++M: Ralf Baechle <ralf@linux-mips.org>
++L: linux-hams@vger.kernel.org
++S: Maintained
++W: http://www.linux-ax25.org/
++F: include/net/rose.h
++F: include/uapi/linux/rose.h
++F: net/rose/
++
++ROTATION DRIVER FOR ALLWINNER A83T
++M: Jernej Skrabec <jernej.skrabec@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/allwinner,sun8i-a83t-de2-rotate.yaml
++F: drivers/media/platform/sunxi/sun8i-rotate/
++
++RTL2830 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/dvb-frontends/rtl2830*
++
++RTL2832 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/dvb-frontends/rtl2832*
++
++RTL2832_SDR MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/dvb-frontends/rtl2832_sdr*
++
++RTL8180 WIRELESS DRIVER
++L: linux-wireless@vger.kernel.org
++S: Orphan
++W: https://wireless.wiki.kernel.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-testing.git
++F: drivers/net/wireless/realtek/rtl818x/rtl8180/
++
++RTL8187 WIRELESS DRIVER
++M: Herton Ronaldo Krzesinski <herton@canonical.com>
++M: Hin-Tak Leung <htl10@users.sourceforge.net>
++M: Larry Finger <Larry.Finger@lwfinger.net>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++W: https://wireless.wiki.kernel.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-testing.git
++F: drivers/net/wireless/realtek/rtl818x/rtl8187/
++
++RTL8XXXU WIRELESS DRIVER (rtl8xxxu)
++M: Jes Sorensen <Jes.Sorensen@gmail.com>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jes/linux.git rtl8xxxu-devel
++F: drivers/net/wireless/realtek/rtl8xxxu/
++
++RTRS TRANSPORT DRIVERS
++M: Md. Haris Iqbal <haris.iqbal@ionos.com>
++M: Jack Wang <jinpu.wang@ionos.com>
++L: linux-rdma@vger.kernel.org
++S: Maintained
++F: drivers/infiniband/ulp/rtrs/
++
++RXRPC SOCKETS (AF_RXRPC)
++M: David Howells <dhowells@redhat.com>
++M: Marc Dionne <marc.dionne@auristor.com>
++L: linux-afs@lists.infradead.org
++S: Supported
++W: https://www.infradead.org/~dhowells/kafs/
++F: Documentation/networking/rxrpc.rst
++F: include/keys/rxrpc-type.h
++F: include/net/af_rxrpc.h
++F: include/trace/events/rxrpc.h
++F: include/uapi/linux/rxrpc.h
++F: net/rxrpc/
++
++S3 SAVAGE FRAMEBUFFER DRIVER
++M: Antonino Daplas <adaplas@gmail.com>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++F: drivers/video/fbdev/savage/
++
++S390
++M: Heiko Carstens <hca@linux.ibm.com>
++M: Vasily Gorbik <gor@linux.ibm.com>
++M: Christian Borntraeger <borntraeger@de.ibm.com>
++R: Alexander Gordeev <agordeev@linux.ibm.com>
++L: linux-s390@vger.kernel.org
++S: Supported
++W: http://www.ibm.com/developerworks/linux/linux390/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git
++F: Documentation/driver-api/s390-drivers.rst
++F: Documentation/s390/
++F: arch/s390/
++F: drivers/s390/
++
++S390 COMMON I/O LAYER
++M: Vineeth Vijayan <vneethv@linux.ibm.com>
++M: Peter Oberparleiter <oberpar@linux.ibm.com>
++L: linux-s390@vger.kernel.org
++S: Supported
++W: http://www.ibm.com/developerworks/linux/linux390/
++F: drivers/s390/cio/
++
++S390 DASD DRIVER
++M: Stefan Haberland <sth@linux.ibm.com>
++M: Jan Hoeppner <hoeppner@linux.ibm.com>
++L: linux-s390@vger.kernel.org
++S: Supported
++W: http://www.ibm.com/developerworks/linux/linux390/
++F: block/partitions/ibm.c
++F: drivers/s390/block/dasd*
++F: include/linux/dasd_mod.h
++
++S390 IOMMU (PCI)
++M: Matthew Rosato <mjrosato@linux.ibm.com>
++M: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
++L: linux-s390@vger.kernel.org
++S: Supported
++W: http://www.ibm.com/developerworks/linux/linux390/
++F: drivers/iommu/s390-iommu.c
++
++S390 IUCV NETWORK LAYER
++M: Julian Wiedmann <jwi@linux.ibm.com>
++M: Karsten Graul <kgraul@linux.ibm.com>
++L: linux-s390@vger.kernel.org
++L: netdev@vger.kernel.org
++S: Supported
++W: http://www.ibm.com/developerworks/linux/linux390/
++F: drivers/s390/net/*iucv*
++F: include/net/iucv/
++F: net/iucv/
++
++S390 NETWORK DRIVERS
++M: Julian Wiedmann <jwi@linux.ibm.com>
++M: Karsten Graul <kgraul@linux.ibm.com>
++L: linux-s390@vger.kernel.org
++L: netdev@vger.kernel.org
++S: Supported
++W: http://www.ibm.com/developerworks/linux/linux390/
++F: drivers/s390/net/
++
++S390 PCI SUBSYSTEM
++M: Niklas Schnelle <schnelle@linux.ibm.com>
++M: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
++L: linux-s390@vger.kernel.org
++S: Supported
++W: http://www.ibm.com/developerworks/linux/linux390/
++F: arch/s390/pci/
++F: drivers/pci/hotplug/s390_pci_hpc.c
++F: Documentation/s390/pci.rst
++
++S390 VFIO AP DRIVER
++M: Tony Krowiak <akrowiak@linux.ibm.com>
++M: Halil Pasic <pasic@linux.ibm.com>
++M: Jason Herne <jjherne@linux.ibm.com>
++L: linux-s390@vger.kernel.org
++S: Supported
++W: http://www.ibm.com/developerworks/linux/linux390/
++F: Documentation/s390/vfio-ap.rst
++F: drivers/s390/crypto/vfio_ap_drv.c
++F: drivers/s390/crypto/vfio_ap_ops.c
++F: drivers/s390/crypto/vfio_ap_private.h
++
++S390 VFIO-CCW DRIVER
++M: Eric Farman <farman@linux.ibm.com>
++M: Matthew Rosato <mjrosato@linux.ibm.com>
++R: Halil Pasic <pasic@linux.ibm.com>
++L: linux-s390@vger.kernel.org
++L: kvm@vger.kernel.org
++S: Supported
++F: Documentation/s390/vfio-ccw.rst
++F: drivers/s390/cio/vfio_ccw*
++F: include/uapi/linux/vfio_ccw.h
++
++S390 VFIO-PCI DRIVER
++M: Matthew Rosato <mjrosato@linux.ibm.com>
++M: Eric Farman <farman@linux.ibm.com>
++L: linux-s390@vger.kernel.org
++L: kvm@vger.kernel.org
++S: Supported
++F: drivers/vfio/pci/vfio_pci_zdev.c
++F: include/uapi/linux/vfio_zdev.h
++
++S390 ZCRYPT DRIVER
++M: Harald Freudenberger <freude@linux.ibm.com>
++L: linux-s390@vger.kernel.org
++S: Supported
++W: http://www.ibm.com/developerworks/linux/linux390/
++F: drivers/s390/crypto/
++
++S390 ZFCP DRIVER
++M: Steffen Maier <maier@linux.ibm.com>
++M: Benjamin Block <bblock@linux.ibm.com>
++L: linux-s390@vger.kernel.org
++S: Supported
++W: http://www.ibm.com/developerworks/linux/linux390/
++F: drivers/s390/scsi/zfcp_*
++
++S3C ADC BATTERY DRIVER
++M: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
++L: linux-samsung-soc@vger.kernel.org
++S: Odd Fixes
++F: drivers/power/supply/s3c_adc_battery.c
++F: include/linux/s3c_adc_battery.h
++
++S3C24XX SD/MMC Driver
++M: Ben Dooks <ben-linux@fluff.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++F: drivers/mmc/host/s3cmci.*
++
++SAA6588 RDS RECEIVER DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/saa6588*
++
++SAA7134 VIDEO4LINUX DRIVER
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-media@vger.kernel.org
++S: Odd fixes
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/driver-api/media/drivers/saa7134*
++F: drivers/media/pci/saa7134/
++
++SAA7146 VIDEO4LINUX-2 DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/common/saa7146/
++F: drivers/media/pci/saa7146/
++F: include/media/drv-intf/saa7146*
++
++SAFESETID SECURITY MODULE
++M: Micah Morton <mortonm@chromium.org>
++S: Supported
++F: Documentation/admin-guide/LSM/SafeSetID.rst
++F: security/safesetid/
++
++SAMSUNG AUDIO (ASoC) DRIVERS
++M: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
++M: Sylwester Nawrocki <s.nawrocki@samsung.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Supported
++F: Documentation/devicetree/bindings/sound/samsung*
++F: sound/soc/samsung/
++
++SAMSUNG EXYNOS PSEUDO RANDOM NUMBER GENERATOR (RNG) DRIVER
++M: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
++L: linux-crypto@vger.kernel.org
++L: linux-samsung-soc@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/rng/samsung,exynos4-rng.yaml
++F: drivers/crypto/exynos-rng.c
++
++SAMSUNG EXYNOS TRUE RANDOM NUMBER GENERATOR (TRNG) DRIVER
++M: Łukasz Stelmach <l.stelmach@samsung.com>
++L: linux-samsung-soc@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.yaml
++F: drivers/char/hw_random/exynos-trng.c
++
++SAMSUNG FRAMEBUFFER DRIVER
++M: Jingoo Han <jingoohan1@gmail.com>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++F: drivers/video/fbdev/s3c-fb.c
++
++SAMSUNG INTERCONNECT DRIVERS
++M: Sylwester Nawrocki <s.nawrocki@samsung.com>
++M: Artur Świgoń <a.swigon@samsung.com>
++L: linux-pm@vger.kernel.org
++L: linux-samsung-soc@vger.kernel.org
++S: Supported
++F: drivers/interconnect/samsung/
++
++SAMSUNG LAPTOP DRIVER
++M: Corentin Chary <corentin.chary@gmail.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/samsung-laptop.c
++
++SAMSUNG MULTIFUNCTION PMIC DEVICE DRIVERS
++M: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
++M: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
++L: linux-kernel@vger.kernel.org
++L: linux-samsung-soc@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/clock/samsung,s2mps11.txt
++F: Documentation/devicetree/bindings/mfd/samsung,sec-core.txt
++F: Documentation/devicetree/bindings/regulator/samsung,s2m*.txt
++F: Documentation/devicetree/bindings/regulator/samsung,s5m*.txt
++F: drivers/clk/clk-s2mps11.c
++F: drivers/mfd/sec*.c
++F: drivers/regulator/s2m*.c
++F: drivers/regulator/s5m*.c
++F: drivers/rtc/rtc-s5m.c
++F: include/linux/mfd/samsung/
++
++SAMSUNG S3C24XX/S3C64XX SOC SERIES CAMIF DRIVER
++M: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
++L: linux-media@vger.kernel.org
++L: linux-samsung-soc@vger.kernel.org
++S: Maintained
++F: drivers/media/platform/s3c-camif/
++F: include/media/drv-intf/s3c_camif.h
++
++SAMSUNG S3FWRN5 NFC DRIVER
++M: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
++M: Krzysztof Opasiak <k.opasiak@samsung.com>
++L: linux-nfc@lists.01.org (subscribers-only)
++S: Maintained
++F: Documentation/devicetree/bindings/net/nfc/samsung,s3fwrn5.yaml
++F: drivers/nfc/s3fwrn5
++
++SAMSUNG S5C73M3 CAMERA DRIVER
++M: Andrzej Hajda <a.hajda@samsung.com>
++L: linux-media@vger.kernel.org
++S: Supported
++F: drivers/media/i2c/s5c73m3/*
++
++SAMSUNG S5K5BAF CAMERA DRIVER
++M: Andrzej Hajda <a.hajda@samsung.com>
++L: linux-media@vger.kernel.org
++S: Supported
++F: drivers/media/i2c/s5k5baf.c
++
++SAMSUNG S5P Security SubSystem (SSS) DRIVER
++M: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
++M: Vladimir Zapolskiy <vz@mleia.com>
++L: linux-crypto@vger.kernel.org
++L: linux-samsung-soc@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/crypto/samsung-slimsss.yaml
++F: Documentation/devicetree/bindings/crypto/samsung-sss.yaml
++F: drivers/crypto/s5p-sss.c
++
++SAMSUNG S5P/EXYNOS4 SOC SERIES CAMERA SUBSYSTEM DRIVERS
++M: Sylwester Nawrocki <s.nawrocki@samsung.com>
++L: linux-media@vger.kernel.org
++S: Supported
++Q: https://patchwork.linuxtv.org/project/linux-media/list/
++F: drivers/media/platform/exynos4-is/
++
++SAMSUNG SOC CLOCK DRIVERS
++M: Sylwester Nawrocki <s.nawrocki@samsung.com>
++M: Tomasz Figa <tomasz.figa@gmail.com>
++M: Chanwoo Choi <cw00.choi@samsung.com>
++L: linux-samsung-soc@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk.git
++F: Documentation/devicetree/bindings/clock/exynos*.txt
++F: Documentation/devicetree/bindings/clock/samsung,*.yaml
++F: Documentation/devicetree/bindings/clock/samsung,s3c*
++F: Documentation/devicetree/bindings/clock/samsung,s5p*
++F: drivers/clk/samsung/
++F: include/dt-bindings/clock/exynos*.h
++F: include/dt-bindings/clock/s3c*.h
++F: include/dt-bindings/clock/s5p*.h
++F: include/dt-bindings/clock/samsung,*.h
++F: include/linux/clk/samsung.h
++F: include/linux/platform_data/clk-s3c2410.h
++
++SAMSUNG SPI DRIVERS
++M: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
++M: Andi Shyti <andi@etezian.org>
++L: linux-spi@vger.kernel.org
++L: linux-samsung-soc@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/spi/spi-samsung.txt
++F: drivers/spi/spi-s3c*
++F: include/linux/platform_data/spi-s3c64xx.h
++F: include/linux/spi/s3c24xx-fiq.h
++
++SAMSUNG SXGBE DRIVERS
++M: Byungho An <bh74.an@samsung.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/samsung/sxgbe/
++
++SAMSUNG THERMAL DRIVER
++M: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
++L: linux-pm@vger.kernel.org
++L: linux-samsung-soc@vger.kernel.org
++S: Supported
++T: git https://github.com/lmajewski/linux-samsung-thermal.git
++F: drivers/thermal/samsung/
++
++SAMSUNG USB2 PHY DRIVER
++M: Sylwester Nawrocki <s.nawrocki@samsung.com>
++L: linux-kernel@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/phy/samsung-phy.txt
++F: Documentation/driver-api/phy/samsung-usb2.rst
++F: drivers/phy/samsung/phy-exynos4210-usb2.c
++F: drivers/phy/samsung/phy-exynos4x12-usb2.c
++F: drivers/phy/samsung/phy-exynos5250-usb2.c
++F: drivers/phy/samsung/phy-s5pv210-usb2.c
++F: drivers/phy/samsung/phy-samsung-usb2.c
++F: drivers/phy/samsung/phy-samsung-usb2.h
++
++SANCLOUD BEAGLEBONE ENHANCED DEVICE TREE
++M: Paul Barker <paul.barker@sancloud.com>
++R: Marc Murphy <marc.murphy@sancloud.com>
++S: Supported
++F: arch/arm/boot/dts/am335x-sancloud*
++
++SC1200 WDT DRIVER
++M: Zwane Mwaikambo <zwanem@gmail.com>
++S: Maintained
++F: drivers/watchdog/sc1200wdt.c
++
++SCHEDULER
++M: Ingo Molnar <mingo@redhat.com>
++M: Peter Zijlstra <peterz@infradead.org>
++M: Juri Lelli <juri.lelli@redhat.com> (SCHED_DEADLINE)
++M: Vincent Guittot <vincent.guittot@linaro.org> (SCHED_NORMAL)
++R: Dietmar Eggemann <dietmar.eggemann@arm.com> (SCHED_NORMAL)
++R: Steven Rostedt <rostedt@goodmis.org> (SCHED_FIFO/SCHED_RR)
++R: Ben Segall <bsegall@google.com> (CONFIG_CFS_BANDWIDTH)
++R: Mel Gorman <mgorman@suse.de> (CONFIG_NUMA_BALANCING)
++R: Daniel Bristot de Oliveira <bristot@redhat.com> (SCHED_DEADLINE)
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core
++F: include/linux/preempt.h
++F: include/linux/sched.h
++F: include/linux/wait.h
++F: include/uapi/linux/sched.h
++F: kernel/sched/
++
++SCR24X CHIP CARD INTERFACE DRIVER
++M: Lubomir Rintel <lkundrak@v3.sk>
++S: Supported
++F: drivers/char/pcmcia/scr24x_cs.c
++
++SCSI RDMA PROTOCOL (SRP) INITIATOR
++M: Bart Van Assche <bvanassche@acm.org>
++L: linux-rdma@vger.kernel.org
++S: Supported
++Q: http://patchwork.kernel.org/project/linux-rdma/list/
++F: drivers/infiniband/ulp/srp/
++F: include/scsi/srp.h
++
++SCSI RDMA PROTOCOL (SRP) TARGET
++M: Bart Van Assche <bvanassche@acm.org>
++L: linux-rdma@vger.kernel.org
++L: target-devel@vger.kernel.org
++S: Supported
++Q: http://patchwork.kernel.org/project/linux-rdma/list/
++F: drivers/infiniband/ulp/srpt/
++
++SCSI SG DRIVER
++M: Doug Gilbert <dgilbert@interlog.com>
++L: linux-scsi@vger.kernel.org
++S: Maintained
++W: http://sg.danny.cz/sg
++F: Documentation/scsi/scsi-generic.rst
++F: drivers/scsi/sg.c
++F: include/scsi/sg.h
++
++SCSI SUBSYSTEM
++M: "James E.J. Bottomley" <jejb@linux.ibm.com>
++M: "Martin K. Petersen" <martin.petersen@oracle.com>
++L: linux-scsi@vger.kernel.org
++S: Maintained
++Q: https://patchwork.kernel.org/project/linux-scsi/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git
++F: Documentation/devicetree/bindings/scsi/
++F: drivers/scsi/
++F: include/scsi/
++
++SCSI TAPE DRIVER
++M: Kai Mäkisara <Kai.Makisara@kolumbus.fi>
++L: linux-scsi@vger.kernel.org
++S: Maintained
++F: Documentation/scsi/st.rst
++F: drivers/scsi/st.*
++F: drivers/scsi/st_*.h
++
++SCSI TARGET CORE USER DRIVER
++M: Bodo Stroesser <bostroesser@gmail.com>
++L: linux-scsi@vger.kernel.org
++L: target-devel@vger.kernel.org
++S: Supported
++F: Documentation/target/tcmu-design.rst
++F: drivers/target/target_core_user.c
++F: include/uapi/linux/target_core_user.h
++
++SCSI TARGET SUBSYSTEM
++M: "Martin K. Petersen" <martin.petersen@oracle.com>
++L: linux-scsi@vger.kernel.org
++L: target-devel@vger.kernel.org
++S: Supported
++W: http://www.linux-iscsi.org
++Q: https://patchwork.kernel.org/project/target-devel/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git
++F: Documentation/target/
++F: drivers/target/
++F: include/target/
++
++SCTP PROTOCOL
++M: Vlad Yasevich <vyasevich@gmail.com>
++M: Neil Horman <nhorman@tuxdriver.com>
++M: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
++L: linux-sctp@vger.kernel.org
++S: Maintained
++W: http://lksctp.sourceforge.net
++F: Documentation/networking/sctp.rst
++F: include/linux/sctp.h
++F: include/net/sctp/
++F: include/uapi/linux/sctp.h
++F: net/sctp/
++
++SCx200 CPU SUPPORT
++M: Jim Cromie <jim.cromie@gmail.com>
++S: Odd Fixes
++F: Documentation/i2c/busses/scx200_acb.rst
++F: arch/x86/platform/scx200/
++F: drivers/i2c/busses/scx200*
++F: drivers/mtd/maps/scx200_docflash.c
++F: drivers/watchdog/scx200_wdt.c
++F: include/linux/scx200.h
++
++SCx200 GPIO DRIVER
++M: Jim Cromie <jim.cromie@gmail.com>
++S: Maintained
++F: drivers/char/scx200_gpio.c
++F: include/linux/scx200_gpio.h
++
++SCx200 HRT CLOCKSOURCE DRIVER
++M: Jim Cromie <jim.cromie@gmail.com>
++S: Maintained
++F: drivers/clocksource/scx200_hrt.c
++
++SDRICOH_CS MMC/SD HOST CONTROLLER INTERFACE DRIVER
++M: Sascha Sommer <saschasommer@freenet.de>
++L: sdricohcs-devel@lists.sourceforge.net (subscribers-only)
++S: Maintained
++F: drivers/mmc/host/sdricoh_cs.c
++
++SECO BOARDS CEC DRIVER
++M: Ettore Chimenti <ek5.chimenti@gmail.com>
++S: Maintained
++F: drivers/media/cec/platform/seco/seco-cec.c
++F: drivers/media/cec/platform/seco/seco-cec.h
++
++SECURE COMPUTING
++M: Kees Cook <keescook@chromium.org>
++R: Andy Lutomirski <luto@amacapital.net>
++R: Will Drewry <wad@chromium.org>
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git seccomp
++F: Documentation/userspace-api/seccomp_filter.rst
++F: include/linux/seccomp.h
++F: include/uapi/linux/seccomp.h
++F: kernel/seccomp.c
++F: tools/testing/selftests/kselftest_harness.h
++F: tools/testing/selftests/seccomp/*
++K: \bsecure_computing
++K: \bTIF_SECCOMP\b
++
++SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) Broadcom BRCMSTB DRIVER
++M: Al Cooper <alcooperx@gmail.com>
++L: linux-mmc@vger.kernel.org
++L: bcm-kernel-feedback-list@broadcom.com
++S: Maintained
++F: drivers/mmc/host/sdhci-brcmstb*
++
++SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) DRIVER
++M: Adrian Hunter <adrian.hunter@intel.com>
++L: linux-mmc@vger.kernel.org
++S: Maintained
++F: drivers/mmc/host/sdhci*
++F: include/linux/mmc/sdhci*
++
++SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) MICROCHIP DRIVER
++M: Eugen Hristev <eugen.hristev@microchip.com>
++L: linux-mmc@vger.kernel.org
++S: Supported
++F: drivers/mmc/host/sdhci-of-at91.c
++
++SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) SAMSUNG DRIVER
++M: Ben Dooks <ben-linux@fluff.org>
++M: Jaehoon Chung <jh80.chung@samsung.com>
++L: linux-mmc@vger.kernel.org
++S: Maintained
++F: drivers/mmc/host/sdhci-s3c*
++
++SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) ST SPEAR DRIVER
++M: Viresh Kumar <vireshk@kernel.org>
++L: linux-mmc@vger.kernel.org
++S: Maintained
++F: drivers/mmc/host/sdhci-spear.c
++
++SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) TI OMAP DRIVER
++M: Kishon Vijay Abraham I <kishon@ti.com>
++L: linux-mmc@vger.kernel.org
++S: Maintained
++F: drivers/mmc/host/sdhci-omap.c
++
++SECURE ENCRYPTING DEVICE (SED) OPAL DRIVER
++M: Jonathan Derrick <jonathan.derrick@intel.com>
++M: Revanth Rajashekar <revanth.rajashekar@intel.com>
++L: linux-block@vger.kernel.org
++S: Supported
++F: block/opal_proto.h
++F: block/sed*
++F: include/linux/sed*
++F: include/uapi/linux/sed*
++
++SECURITY CONTACT
++M: Security Officers <security@kernel.org>
++S: Supported
++F: Documentation/admin-guide/security-bugs.rst
++
++SECURITY SUBSYSTEM
++M: James Morris <jmorris@namei.org>
++M: "Serge E. Hallyn" <serge@hallyn.com>
++L: linux-security-module@vger.kernel.org (suggested Cc:)
++S: Supported
++W: http://kernsec.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security.git
++F: security/
++X: security/selinux/
++
++SELINUX SECURITY MODULE
++M: Paul Moore <paul@paul-moore.com>
++M: Stephen Smalley <stephen.smalley.work@gmail.com>
++M: Eric Paris <eparis@parisplace.org>
++L: selinux@vger.kernel.org
++S: Supported
++W: https://selinuxproject.org
++W: https://github.com/SELinuxProject
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux.git
++F: Documentation/ABI/obsolete/sysfs-selinux-checkreqprot
++F: Documentation/ABI/obsolete/sysfs-selinux-disable
++F: Documentation/admin-guide/LSM/SELinux.rst
++F: include/trace/events/avc.h
++F: include/uapi/linux/selinux_netlink.h
++F: scripts/selinux/
++F: security/selinux/
++
++SENSABLE PHANTOM
++M: Jiri Slaby <jirislaby@kernel.org>
++S: Maintained
++F: drivers/misc/phantom.c
++F: include/uapi/linux/phantom.h
++
++SENSIRION SCD30 CARBON DIOXIDE SENSOR DRIVER
++M: Tomasz Duszynski <tomasz.duszynski@octakon.com>
++S: Maintained
++F: Documentation/devicetree/bindings/iio/chemical/sensirion,scd30.yaml
++F: drivers/iio/chemical/scd30.h
++F: drivers/iio/chemical/scd30_core.c
++F: drivers/iio/chemical/scd30_i2c.c
++F: drivers/iio/chemical/scd30_serial.c
++
++SENSIRION SGP40 GAS SENSOR DRIVER
++M: Andreas Klinger <ak@it-klinger.de>
++S: Maintained
++F: Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp40
++F: drivers/iio/chemical/sgp40.c
++
++SENSIRION SPS30 AIR POLLUTION SENSOR DRIVER
++M: Tomasz Duszynski <tduszyns@gmail.com>
++S: Maintained
++F: Documentation/devicetree/bindings/iio/chemical/sensirion,sps30.yaml
++F: drivers/iio/chemical/sps30.c
++F: drivers/iio/chemical/sps30_i2c.c
++F: drivers/iio/chemical/sps30_serial.c
++
++SERIAL DEVICE BUS
++M: Rob Herring <robh@kernel.org>
++L: linux-serial@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/serial/serial.yaml
++F: drivers/tty/serdev/
++F: include/linux/serdev.h
++
++SERIAL DRIVERS
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++L: linux-serial@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/serial/
++F: drivers/tty/serial/
++
++SERIAL IR RECEIVER
++M: Sean Young <sean@mess.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/rc/serial_ir.c
++
++SERIAL LOW-POWER INTER-CHIP MEDIA BUS (SLIMbus)
++M: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/slimbus/
++F: drivers/slimbus/
++F: include/linux/slimbus.h
++
++SFC NETWORK DRIVER
++M: Edward Cree <ecree.xilinx@gmail.com>
++M: Martin Habets <habetsm.xilinx@gmail.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/sfc/
++
++SFF/SFP/SFP+ MODULE SUPPORT
++M: Russell King <linux@armlinux.org.uk>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/phy/phylink.c
++F: drivers/net/phy/sfp*
++F: include/linux/mdio/mdio-i2c.h
++F: include/linux/phylink.h
++F: include/linux/sfp.h
++K: phylink\.h|struct\s+phylink|\.phylink|>phylink_|phylink_(autoneg|clear|connect|create|destroy|disconnect|ethtool|helper|mac|mii|of|set|start|stop|test|validate)
++
++SGI GRU DRIVER
++M: Dimitri Sivanich <dimitri.sivanich@hpe.com>
++S: Maintained
++F: drivers/misc/sgi-gru/
++
++SGI XP/XPC/XPNET DRIVER
++M: Robin Holt <robinmholt@gmail.com>
++M: Steve Wahl <steve.wahl@hpe.com>
++R: Mike Travis <mike.travis@hpe.com>
++S: Maintained
++F: drivers/misc/sgi-xp/
++
++SHARED MEMORY COMMUNICATIONS (SMC) SOCKETS
++M: Karsten Graul <kgraul@linux.ibm.com>
++L: linux-s390@vger.kernel.org
++S: Supported
++W: http://www.ibm.com/developerworks/linux/linux390/
++F: net/smc/
++
++SHARP GP2AP002A00F/GP2AP002S00F SENSOR DRIVER
++M: Linus Walleij <linus.walleij@linaro.org>
++L: linux-iio@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git
++F: Documentation/devicetree/bindings/iio/light/sharp,gp2ap002.yaml
++F: drivers/iio/light/gp2ap002.c
++
++SHARP RJ54N1CB0C SENSOR DRIVER
++M: Jacopo Mondi <jacopo@jmondi.org>
++L: linux-media@vger.kernel.org
++S: Odd fixes
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/rj54n1cb0c.c
++F: include/media/i2c/rj54n1cb0c.h
++
++SH_VOU V4L2 OUTPUT DRIVER
++L: linux-media@vger.kernel.org
++S: Orphan
++F: drivers/media/platform/sh_vou.c
++F: include/media/drv-intf/sh_vou.h
++
++SI2157 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/tuners/si2157*
++
++SI2165 MEDIA DRIVER
++M: Matthias Schwarzott <zzam@gentoo.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++F: drivers/media/dvb-frontends/si2165*
++
++SI2168 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/dvb-frontends/si2168*
++
++SI470X FM RADIO RECEIVER I2C DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/si470x/radio-si470x-i2c.c
++
++SI470X FM RADIO RECEIVER USB DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/si470x/radio-si470x-common.c
++F: drivers/media/radio/si470x/radio-si470x-usb.c
++F: drivers/media/radio/si470x/radio-si470x.h
++
++SI4713 FM RADIO TRANSMITTER I2C DRIVER
++M: Eduardo Valentin <edubezval@gmail.com>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/si4713/si4713.?
++
++SI4713 FM RADIO TRANSMITTER PLATFORM DRIVER
++M: Eduardo Valentin <edubezval@gmail.com>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/si4713/radio-platform-si4713.c
++
++SI4713 FM RADIO TRANSMITTER USB DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/si4713/radio-usb-si4713.c
++
++SIANO DVB DRIVER
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-media@vger.kernel.org
++S: Odd fixes
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/common/siano/
++F: drivers/media/mmc/siano/
++F: drivers/media/usb/siano/
++F: drivers/media/usb/siano/
++
++SIFIVE DRIVERS
++M: Palmer Dabbelt <palmer@dabbelt.com>
++M: Paul Walmsley <paul.walmsley@sifive.com>
++L: linux-riscv@lists.infradead.org
++S: Supported
++T: git git://github.com/sifive/riscv-linux.git
++N: sifive
++K: [^@]sifive
++
++SIFIVE FU540 SYSTEM-ON-CHIP
++M: Paul Walmsley <paul.walmsley@sifive.com>
++M: Palmer Dabbelt <palmer@dabbelt.com>
++L: linux-riscv@lists.infradead.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/pjw/sifive.git
++N: fu540
++K: fu540
++
++SIFIVE PDMA DRIVER
++M: Green Wan <green.wan@sifive.com>
++S: Maintained
++F: Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml
++F: drivers/dma/sf-pdma/
++
++SILEAD TOUCHSCREEN DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++L: linux-input@vger.kernel.org
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/input/touchscreen/silead.c
++F: drivers/platform/x86/touchscreen_dmi.c
++
++SILICON LABS WIRELESS DRIVERS (for WFxxx series)
++M: Jérôme Pouiller <jerome.pouiller@silabs.com>
++S: Supported
++F: drivers/staging/wfx/
++
++SILICON MOTION SM712 FRAME BUFFER DRIVER
++M: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
++M: Teddy Wang <teddy.wang@siliconmotion.com>
++M: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++F: Documentation/fb/sm712fb.rst
++F: drivers/video/fbdev/sm712*
++
++SILVACO I3C DUAL-ROLE MASTER
++M: Miquel Raynal <miquel.raynal@bootlin.com>
++M: Conor Culhane <conor.culhane@silvaco.com>
++L: linux-i3c@lists.infradead.org
++S: Maintained
++F: Documentation/devicetree/bindings/i3c/silvaco,i3c-master.yaml
++F: drivers/i3c/master/svc-i3c-master.c
++
++SIMPLEFB FB DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/display/simple-framebuffer.yaml
++F: drivers/video/fbdev/simplefb.c
++F: include/linux/platform_data/simplefb.h
++
++SIMTEC EB110ATX (Chalice CATS)
++M: Simtec Linux Team <linux@simtec.co.uk>
++S: Supported
++W: http://www.simtec.co.uk/products/EB110ATX/
++
++SIMTEC EB2410ITX (BAST)
++M: Simtec Linux Team <linux@simtec.co.uk>
++S: Supported
++W: http://www.simtec.co.uk/products/EB2410ITX/
++F: arch/arm/mach-s3c/bast-ide.c
++F: arch/arm/mach-s3c/bast-irq.c
++F: arch/arm/mach-s3c/mach-bast.c
++
++SIOX
++M: Thorsten Scherer <t.scherer@eckelmann.de>
++M: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
++R: Pengutronix Kernel Team <kernel@pengutronix.de>
++S: Supported
++F: drivers/gpio/gpio-siox.c
++F: drivers/siox/*
++F: include/trace/events/siox.h
++
++SIPHASH PRF ROUTINES
++M: Jason A. Donenfeld <Jason@zx2c4.com>
++S: Maintained
++F: include/linux/siphash.h
++F: lib/siphash.c
++F: lib/test_siphash.c
++
++SIS 190 ETHERNET DRIVER
++M: Francois Romieu <romieu@fr.zoreil.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/sis/sis190.c
++
++SIS 900/7016 FAST ETHERNET DRIVER
++M: Daniele Venzano <venza@brownhat.org>
++L: netdev@vger.kernel.org
++S: Maintained
++W: http://www.brownhat.org/sis900.html
++F: drivers/net/ethernet/sis/sis900.*
++
++SIS FRAMEBUFFER DRIVER
++M: Thomas Winischhofer <thomas@winischhofer.net>
++S: Maintained
++W: http://www.winischhofer.net/linuxsisvga.shtml
++F: Documentation/fb/sisfb.rst
++F: drivers/video/fbdev/sis/
++F: include/video/sisfb.h
++
++SIS I2C TOUCHSCREEN DRIVER
++M: Mika Penttilä <mika.penttila@nextfour.com>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/input/touchscreen/sis_i2c.txt
++F: drivers/input/touchscreen/sis_i2c.c
++
++SIS USB2VGA DRIVER
++M: Thomas Winischhofer <thomas@winischhofer.net>
++S: Maintained
++W: http://www.winischhofer.at/linuxsisusbvga.shtml
++F: drivers/usb/misc/sisusbvga/
++
++SLAB ALLOCATOR
++M: Christoph Lameter <cl@linux.com>
++M: Pekka Enberg <penberg@kernel.org>
++M: David Rientjes <rientjes@google.com>
++M: Joonsoo Kim <iamjoonsoo.kim@lge.com>
++M: Andrew Morton <akpm@linux-foundation.org>
++M: Vlastimil Babka <vbabka@suse.cz>
++L: linux-mm@kvack.org
++S: Maintained
++F: include/linux/sl?b*.h
++F: mm/sl?b*
++
++SLEEPABLE READ-COPY UPDATE (SRCU)
++M: Lai Jiangshan <jiangshanlai@gmail.com>
++M: "Paul E. McKenney" <paulmck@kernel.org>
++M: Josh Triplett <josh@joshtriplett.org>
++R: Steven Rostedt <rostedt@goodmis.org>
++R: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
++L: rcu@vger.kernel.org
++S: Supported
++W: http://www.rdrop.com/users/paulmck/RCU/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev
++F: include/linux/srcu*.h
++F: kernel/rcu/srcu*.c
++
++SMACK SECURITY MODULE
++M: Casey Schaufler <casey@schaufler-ca.com>
++L: linux-security-module@vger.kernel.org
++S: Maintained
++W: http://schaufler-ca.com
++T: git git://github.com/cschaufler/smack-next
++F: Documentation/admin-guide/LSM/Smack.rst
++F: security/smack/
++
++SMC91x ETHERNET DRIVER
++M: Nicolas Pitre <nico@fluxnic.net>
++S: Odd Fixes
++F: drivers/net/ethernet/smsc/smc91x.*
++
++SECURE MONITOR CALL(SMC) CALLING CONVENTION (SMCCC)
++M: Mark Rutland <mark.rutland@arm.com>
++M: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
++M: Sudeep Holla <sudeep.holla@arm.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: drivers/firmware/smccc/
++F: include/linux/arm-smccc.h
++
++SMM665 HARDWARE MONITOR DRIVER
++M: Guenter Roeck <linux@roeck-us.net>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/smm665.rst
++F: drivers/hwmon/smm665.c
++
++SMSC EMC2103 HARDWARE MONITOR DRIVER
++M: Steve Glendinning <steve.glendinning@shawell.net>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/emc2103.rst
++F: drivers/hwmon/emc2103.c
++
++SMSC SCH5627 HARDWARE MONITOR DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++L: linux-hwmon@vger.kernel.org
++S: Supported
++F: Documentation/hwmon/sch5627.rst
++F: drivers/hwmon/sch5627.c
++
++SMSC UFX6000 and UFX7000 USB to VGA DRIVER
++M: Steve Glendinning <steve.glendinning@shawell.net>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++F: drivers/video/fbdev/smscufx.c
++
++SMSC47B397 HARDWARE MONITOR DRIVER
++M: Jean Delvare <jdelvare@suse.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/smsc47b397.rst
++F: drivers/hwmon/smsc47b397.c
++
++SMSC911x ETHERNET DRIVER
++M: Steve Glendinning <steve.glendinning@shawell.net>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/smsc/smsc911x.*
++F: include/linux/smsc911x.h
++
++SMSC9420 PCI ETHERNET DRIVER
++M: Steve Glendinning <steve.glendinning@shawell.net>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/smsc/smsc9420.*
++
++SOCIONEXT (SNI) AVE NETWORK DRIVER
++M: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/socionext,uniphier-ave4.yaml
++F: drivers/net/ethernet/socionext/sni_ave.c
++
++SOCIONEXT (SNI) NETSEC NETWORK DRIVER
++M: Jassi Brar <jaswinder.singh@linaro.org>
++M: Ilias Apalodimas <ilias.apalodimas@linaro.org>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/socionext-netsec.txt
++F: drivers/net/ethernet/socionext/netsec.c
++
++SOCIONEXT (SNI) Synquacer SPI DRIVER
++M: Masahisa Kojima <masahisa.kojima@linaro.org>
++M: Jassi Brar <jaswinder.singh@linaro.org>
++L: linux-spi@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/spi/spi-synquacer.txt
++F: drivers/spi/spi-synquacer.c
++
++SOCIONEXT SYNQUACER I2C DRIVER
++M: Ard Biesheuvel <ardb@kernel.org>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/i2c/i2c-synquacer.txt
++F: drivers/i2c/busses/i2c-synquacer.c
++
++SOCIONEXT UNIPHIER SOUND DRIVER
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Orphan
++F: sound/soc/uniphier/
++
++SOEKRIS NET48XX LED SUPPORT
++M: Chris Boot <bootc@bootc.net>
++S: Maintained
++F: drivers/leds/leds-net48xx.c
++
++SOFT-IWARP DRIVER (siw)
++M: Bernard Metzler <bmt@zurich.ibm.com>
++L: linux-rdma@vger.kernel.org
++S: Supported
++F: drivers/infiniband/sw/siw/
++F: include/uapi/rdma/siw-abi.h
++
++SOFT-ROCE DRIVER (rxe)
++M: Zhu Yanjun <zyjzyj2000@gmail.com>
++L: linux-rdma@vger.kernel.org
++S: Supported
++F: drivers/infiniband/sw/rxe/
++F: include/uapi/rdma/rdma_user_rxe.h
++
++SOFTLOGIC 6x10 MPEG CODEC
++M: Bluecherry Maintainers <maintainers@bluecherrydvr.com>
++M: Anton Sviridenko <anton@corp.bluecherry.net>
++M: Andrey Utkin <andrey_utkin@fastmail.com>
++M: Ismael Luceno <ismael@iodev.co.uk>
++L: linux-media@vger.kernel.org
++S: Supported
++F: drivers/media/pci/solo6x10/
++
++SOFTWARE DELEGATED EXCEPTION INTERFACE (SDEI)
++M: James Morse <james.morse@arm.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/arm/firmware/sdei.txt
++F: drivers/firmware/arm_sdei.c
++F: include/linux/arm_sdei.h
++F: include/uapi/linux/arm_sdei.h
++
++SOFTWARE NODES
++R: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
++R: Heikki Krogerus <heikki.krogerus@linux.intel.com>
++L: linux-acpi@vger.kernel.org
++S: Maintained
++F: drivers/base/swnode.c
++
++SOFTWARE RAID (Multiple Disks) SUPPORT
++M: Song Liu <song@kernel.org>
++L: linux-raid@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/song/md.git
++F: drivers/md/Kconfig
++F: drivers/md/Makefile
++F: drivers/md/md*
++F: drivers/md/raid*
++F: include/linux/raid/
++F: include/uapi/linux/raid/
++
++SOLIDRUN CLEARFOG SUPPORT
++M: Russell King <linux@armlinux.org.uk>
++S: Maintained
++F: arch/arm/boot/dts/armada-388-clearfog*
++F: arch/arm/boot/dts/armada-38x-solidrun-*
++
++SOLIDRUN CUBOX-I/HUMMINGBOARD SUPPORT
++M: Russell King <linux@armlinux.org.uk>
++S: Maintained
++F: arch/arm/boot/dts/imx6*-cubox-i*
++F: arch/arm/boot/dts/imx6*-hummingboard*
++F: arch/arm/boot/dts/imx6*-sr-*
++
++SONIC NETWORK DRIVER
++M: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/natsemi/sonic.*
++
++SONICS SILICON BACKPLANE DRIVER (SSB)
++M: Michael Buesch <m@bues.ch>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++F: drivers/ssb/
++F: include/linux/ssb/
++
++SONY IMX208 SENSOR DRIVER
++M: Sakari Ailus <sakari.ailus@linux.intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/imx208.c
++
++SONY IMX214 SENSOR DRIVER
++M: Ricardo Ribalda <ribalda@kernel.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/sony,imx214.yaml
++F: drivers/media/i2c/imx214.c
++
++SONY IMX219 SENSOR DRIVER
++M: Dave Stevenson <dave.stevenson@raspberrypi.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/imx219.yaml
++F: drivers/media/i2c/imx219.c
++
++SONY IMX258 SENSOR DRIVER
++M: Sakari Ailus <sakari.ailus@linux.intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/imx258.yaml
++F: drivers/media/i2c/imx258.c
++
++SONY IMX274 SENSOR DRIVER
++M: Leon Luo <leonl@leopardimaging.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/sony,imx274.yaml
++F: drivers/media/i2c/imx274.c
++
++SONY IMX290 SENSOR DRIVER
++M: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/imx290.txt
++F: drivers/media/i2c/imx290.c
++
++SONY IMX319 SENSOR DRIVER
++M: Bingbu Cao <bingbu.cao@intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/imx319.c
++
++SONY IMX334 SENSOR DRIVER
++M: Paul J. Murphy <paul.j.murphy@intel.com>
++M: Daniele Alessandrelli <daniele.alessandrelli@intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/sony,imx334.yaml
++F: drivers/media/i2c/imx334.c
++
++SONY IMX335 SENSOR DRIVER
++M: Paul J. Murphy <paul.j.murphy@intel.com>
++M: Daniele Alessandrelli <daniele.alessandrelli@intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/sony,imx335.yaml
++F: drivers/media/i2c/imx335.c
++
++SONY IMX355 SENSOR DRIVER
++M: Tianshu Qiu <tian.shu.qiu@intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/imx355.c
++
++SONY IMX412 SENSOR DRIVER
++M: Paul J. Murphy <paul.j.murphy@intel.com>
++M: Daniele Alessandrelli <daniele.alessandrelli@intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/sony,imx412.yaml
++F: drivers/media/i2c/imx412.c
++
++SONY MEMORYSTICK SUBSYSTEM
++M: Maxim Levitsky <maximlevitsky@gmail.com>
++M: Alex Dubov <oakad@yahoo.com>
++M: Ulf Hansson <ulf.hansson@linaro.org>
++L: linux-mmc@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc.git
++F: drivers/memstick/
++F: include/linux/memstick.h
++
++SONY VAIO CONTROL DEVICE DRIVER
++M: Mattia Dongili <malattia@linux.it>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++W: http://www.linux.it/~malattia/wiki/index.php/Sony_drivers
++F: Documentation/admin-guide/laptops/sony-laptop.rst
++F: drivers/char/sonypi.c
++F: drivers/platform/x86/sony-laptop.c
++F: include/linux/sony-laptop.h
++
++SOUND
++M: Jaroslav Kysela <perex@perex.cz>
++M: Takashi Iwai <tiwai@suse.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++W: http://www.alsa-project.org/
++Q: http://patchwork.kernel.org/project/alsa-devel/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
++F: Documentation/sound/
++F: include/sound/
++F: include/uapi/sound/
++F: sound/
++
++SOUND - COMPRESSED AUDIO
++M: Vinod Koul <vkoul@kernel.org>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
++F: Documentation/sound/designs/compress-offload.rst
++F: include/sound/compress_driver.h
++F: include/uapi/sound/compress_*
++F: sound/core/compress_offload.c
++F: sound/soc/soc-compress.c
++
++SOUND - DMAENGINE HELPERS
++M: Lars-Peter Clausen <lars@metafoo.de>
++S: Supported
++F: include/sound/dmaengine_pcm.h
++F: sound/core/pcm_dmaengine.c
++F: sound/soc/soc-generic-dmaengine-pcm.c
++
++SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEMENT (ASoC)
++M: Liam Girdwood <lgirdwood@gmail.com>
++M: Mark Brown <broonie@kernel.org>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Supported
++W: http://alsa-project.org/main/index.php/ASoC
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
++F: Documentation/devicetree/bindings/sound/
++F: Documentation/sound/soc/
++F: include/dt-bindings/sound/
++F: include/sound/soc*
++F: sound/soc/
++
++SOUND - SOUND OPEN FIRMWARE (SOF) DRIVERS
++M: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
++M: Liam Girdwood <lgirdwood@gmail.com>
++M: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
++M: Kai Vehmanen <kai.vehmanen@linux.intel.com>
++M: Daniel Baluta <daniel.baluta@nxp.com>
++L: sound-open-firmware@alsa-project.org (moderated for non-subscribers)
++S: Supported
++W: https://github.com/thesofproject/linux/
++F: sound/soc/sof/
++
++SOUNDWIRE SUBSYSTEM
++M: Vinod Koul <vkoul@kernel.org>
++M: Bard Liao <yung-chuan.liao@linux.intel.com>
++R: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
++R: Sanyog Kale <sanyog.r.kale@intel.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire.git
++F: Documentation/driver-api/soundwire/
++F: drivers/soundwire/
++F: include/linux/soundwire/
++
++SP2 MEDIA DRIVER
++M: Olli Salonen <olli.salonen@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++F: drivers/media/dvb-frontends/sp2*
++
++SPARC + UltraSPARC (sparc/sparc64)
++M: "David S. Miller" <davem@davemloft.net>
++L: sparclinux@vger.kernel.org
++S: Maintained
++Q: http://patchwork.ozlabs.org/project/sparclinux/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next.git
++F: arch/sparc/
++F: drivers/sbus/
++
++SPARC SERIAL DRIVERS
++M: "David S. Miller" <davem@davemloft.net>
++L: sparclinux@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc.git
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next.git
++F: drivers/tty/serial/suncore.c
++F: drivers/tty/serial/sunhv.c
++F: drivers/tty/serial/sunsab.c
++F: drivers/tty/serial/sunsab.h
++F: drivers/tty/serial/sunsu.c
++F: drivers/tty/serial/sunzilog.c
++F: drivers/tty/serial/sunzilog.h
++F: drivers/tty/vcc.c
++F: include/linux/sunserialcore.h
++
++SPARSE CHECKER
++M: "Luc Van Oostenryck" <luc.vanoostenryck@gmail.com>
++L: linux-sparse@vger.kernel.org
++S: Maintained
++W: https://sparse.docs.kernel.org/
++T: git git://git.kernel.org/pub/scm/devel/sparse/sparse.git
++Q: https://patchwork.kernel.org/project/linux-sparse/list/
++B: https://bugzilla.kernel.org/enter_bug.cgi?component=Sparse&product=Tools
++F: include/linux/compiler.h
++
++SPEAKUP CONSOLE SPEECH DRIVER
++M: William Hubbs <w.d.hubbs@gmail.com>
++M: Chris Brannon <chris@the-brannons.com>
++M: Kirk Reiser <kirk@reisers.ca>
++M: Samuel Thibault <samuel.thibault@ens-lyon.org>
++L: speakup@linux-speakup.org
++S: Odd Fixes
++W: http://www.linux-speakup.org/
++W: https://github.com/linux-speakup/speakup
++B: https://github.com/linux-speakup/speakup/issues
++F: drivers/accessibility/speakup/
++
++SPEAR CLOCK FRAMEWORK SUPPORT
++M: Viresh Kumar <vireshk@kernel.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++W: http://www.st.com/spear
++F: drivers/clk/spear/
++
++SPEAR PLATFORM SUPPORT
++M: Viresh Kumar <vireshk@kernel.org>
++M: Shiraz Hashim <shiraz.linux.kernel@gmail.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++W: http://www.st.com/spear
++F: arch/arm/boot/dts/spear*
++F: arch/arm/mach-spear/
++
++SPI NOR SUBSYSTEM
++M: Tudor Ambarus <tudor.ambarus@microchip.com>
++R: Michael Walle <michael@walle.cc>
++R: Pratyush Yadav <p.yadav@ti.com>
++L: linux-mtd@lists.infradead.org
++S: Maintained
++W: http://www.linux-mtd.infradead.org/
++Q: http://patchwork.ozlabs.org/project/linux-mtd/list/
++C: irc://irc.oftc.net/mtd
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git spi-nor/next
++F: drivers/mtd/spi-nor/
++F: include/linux/mtd/spi-nor.h
++
++SPI SUBSYSTEM
++M: Mark Brown <broonie@kernel.org>
++L: linux-spi@vger.kernel.org
++S: Maintained
++Q: http://patchwork.kernel.org/project/spi-devel-general/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git
++F: Documentation/devicetree/bindings/spi/
++F: Documentation/spi/
++F: drivers/spi/
++F: include/linux/spi/
++F: include/uapi/linux/spi/
++F: tools/spi/
++
++SPIDERNET NETWORK DRIVER for CELL
++M: Ishizaki Kou <kou.ishizaki@toshiba.co.jp>
++M: Geoff Levand <geoff@infradead.org>
++L: netdev@vger.kernel.org
++L: linuxppc-dev@lists.ozlabs.org
++S: Maintained
++F: Documentation/networking/device_drivers/ethernet/toshiba/spider_net.rst
++F: drivers/net/ethernet/toshiba/spider_net*
++
++SPMI SUBSYSTEM
++M: Stephen Boyd <sboyd@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/sboyd/spmi.git
++F: Documentation/devicetree/bindings/spmi/
++F: drivers/spmi/
++F: include/dt-bindings/spmi/spmi.h
++F: include/linux/spmi.h
++F: include/trace/events/spmi.h
++
++SPU FILE SYSTEM
++M: Jeremy Kerr <jk@ozlabs.org>
++L: linuxppc-dev@lists.ozlabs.org
++S: Supported
++W: http://www.ibm.com/developerworks/power/cell/
++F: Documentation/filesystems/spufs/spufs.rst
++F: arch/powerpc/platforms/cell/spufs/
++
++SQUASHFS FILE SYSTEM
++M: Phillip Lougher <phillip@squashfs.org.uk>
++L: squashfs-devel@lists.sourceforge.net (subscribers-only)
++S: Maintained
++W: http://squashfs.org.uk
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-next.git
++F: Documentation/filesystems/squashfs.rst
++F: fs/squashfs/
++
++SRM (Alpha) environment access
++M: Jan-Benedict Glaw <jbglaw@lug-owl.de>
++S: Maintained
++F: arch/alpha/kernel/srm_env.c
++
++ST LSM6DSx IMU IIO DRIVER
++M: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++W: http://www.st.com/
++F: Documentation/devicetree/bindings/iio/imu/st,lsm6dsx.yaml
++F: drivers/iio/imu/st_lsm6dsx/
++
++ST MIPID02 CSI-2 TO PARALLEL BRIDGE DRIVER
++M: Mickael Guene <mickael.guene@st.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/i2c/st,st-mipid02.txt
++F: drivers/media/i2c/st-mipid02.c
++
++ST STM32 I2C/SMBUS DRIVER
++M: Pierre-Yves MORDRET <pierre-yves.mordret@foss.st.com>
++M: Alain Volmat <alain.volmat@foss.st.com>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: drivers/i2c/busses/i2c-stm32*
++
++ST STM32 SPI DRIVER
++M: Alain Volmat <alain.volmat@foss.st.com>
++L: linux-spi@vger.kernel.org
++S: Maintained
++F: drivers/spi/spi-stm32.c
++
++ST STPDDC60 DRIVER
++M: Daniel Nilsson <daniel.nilsson@flex.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/stpddc60.rst
++F: drivers/hwmon/pmbus/stpddc60.c
++
++ST VL53L0X ToF RANGER(I2C) IIO DRIVER
++M: Song Qiang <songqiang1304521@gmail.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/iio/proximity/st,vl53l0x.yaml
++F: drivers/iio/proximity/vl53l0x-i2c.c
++
++STABLE BRANCH
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++M: Sasha Levin <sashal@kernel.org>
++L: stable@vger.kernel.org
++S: Supported
++F: Documentation/process/stable-kernel-rules.rst
++
++STAGING - ATOMISP DRIVER
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++R: Sakari Ailus <sakari.ailus@linux.intel.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/staging/media/atomisp/
++
++STAGING - FIELDBUS SUBSYSTEM
++M: Sven Van Asbroeck <TheSven73@gmail.com>
++S: Maintained
++F: drivers/staging/fieldbus/*
++F: drivers/staging/fieldbus/Documentation/
++
++STAGING - HMS ANYBUS-S BUS
++M: Sven Van Asbroeck <TheSven73@gmail.com>
++S: Maintained
++F: drivers/staging/fieldbus/anybuss/
++
++STAGING - INDUSTRIAL IO
++M: Jonathan Cameron <jic23@kernel.org>
++L: linux-iio@vger.kernel.org
++S: Odd Fixes
++F: Documentation/devicetree/bindings/staging/iio/
++F: drivers/staging/iio/
++
++STAGING - NVIDIA COMPLIANT EMBEDDED CONTROLLER INTERFACE (nvec)
++M: Marc Dietrich <marvin24@gmx.de>
++L: ac100@lists.launchpad.net (moderated for non-subscribers)
++L: linux-tegra@vger.kernel.org
++S: Maintained
++F: drivers/staging/nvec/
++
++STAGING - OLPC SECONDARY DISPLAY CONTROLLER (DCON)
++M: Jens Frederich <jfrederich@gmail.com>
++M: Jon Nettleton <jon.nettleton@gmail.com>
++S: Maintained
++W: http://wiki.laptop.org/go/DCON
++F: drivers/staging/olpc_dcon/
++
++STAGING - REALTEK RTL8188EU DRIVERS
++M: Larry Finger <Larry.Finger@lwfinger.net>
++M: Phillip Potter <phil@philpotter.co.uk>
++S: Supported
++F: drivers/staging/r8188eu/
++
++STAGING - REALTEK RTL8712U DRIVERS
++M: Larry Finger <Larry.Finger@lwfinger.net>
++M: Florian Schilhabel <florian.c.schilhabel@googlemail.com>.
++S: Odd Fixes
++F: drivers/staging/rtl8712/
++
++STAGING - SEPS525 LCD CONTROLLER DRIVERS
++M: Michael Hennerich <michael.hennerich@analog.com>
++L: linux-fbdev@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
++F: drivers/staging/fbtft/fb_seps525.c
++
++STAGING - SILICON MOTION SM750 FRAME BUFFER DRIVER
++M: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
++M: Teddy Wang <teddy.wang@siliconmotion.com>
++M: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++F: drivers/staging/sm750fb/
++
++STAGING - VIA VT665X DRIVERS
++M: Forest Bond <forest@alittletooquiet.net>
++S: Odd Fixes
++F: drivers/staging/vt665?/
++
++STAGING SUBSYSTEM
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++L: linux-staging@lists.linux.dev
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
++F: drivers/staging/
++
++STARFIRE/DURALAN NETWORK DRIVER
++M: Ion Badulescu <ionut@badula.org>
++S: Odd Fixes
++F: drivers/net/ethernet/adaptec/starfire*
++
++STATIC BRANCH/CALL
++M: Peter Zijlstra <peterz@infradead.org>
++M: Josh Poimboeuf <jpoimboe@redhat.com>
++M: Jason Baron <jbaron@akamai.com>
++R: Steven Rostedt <rostedt@goodmis.org>
++R: Ard Biesheuvel <ardb@kernel.org>
++S: Supported
++F: arch/*/include/asm/jump_label*.h
++F: arch/*/include/asm/static_call*.h
++F: arch/*/kernel/jump_label.c
++F: arch/*/kernel/static_call.c
++F: include/linux/jump_label*.h
++F: include/linux/static_call*.h
++F: kernel/jump_label.c
++F: kernel/static_call.c
++
++STI AUDIO (ASoC) DRIVERS
++M: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/sound/st,sti-asoc-card.txt
++F: sound/soc/sti/
++
++STI CEC DRIVER
++M: Benjamin Gaignard <benjamin.gaignard@linaro.org>
++S: Maintained
++F: Documentation/devicetree/bindings/media/stih-cec.txt
++F: drivers/media/cec/platform/sti/
++
++STK1160 USB VIDEO CAPTURE DRIVER
++M: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
++L: linux-media@vger.kernel.org
++S: Maintained
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/usb/stk1160/
++
++STM32 AUDIO (ASoC) DRIVERS
++M: Olivier Moysan <olivier.moysan@foss.st.com>
++M: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml
++F: Documentation/devicetree/bindings/sound/st,stm32-*.yaml
++F: sound/soc/stm/
++
++STM32 TIMER/LPTIMER DRIVERS
++M: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
++S: Maintained
++F: Documentation/ABI/testing/*timer-stm32
++F: Documentation/devicetree/bindings/*/*stm32-*timer*
++F: drivers/*/stm32-*timer*
++F: drivers/pwm/pwm-stm32*
++F: include/linux/*/stm32-*tim*
++
++STMMAC ETHERNET DRIVER
++M: Giuseppe Cavallaro <peppe.cavallaro@st.com>
++M: Alexandre Torgue <alexandre.torgue@foss.st.com>
++M: Jose Abreu <joabreu@synopsys.com>
++L: netdev@vger.kernel.org
++S: Supported
++W: http://www.stlinux.com
++F: Documentation/networking/device_drivers/ethernet/stmicro/
++F: drivers/net/ethernet/stmicro/stmmac/
++
++SUN3/3X
++M: Sam Creasey <sammy@sammy.net>
++S: Maintained
++W: http://sammy.net/sun3/
++F: arch/m68k/include/asm/sun3*
++F: arch/m68k/kernel/*sun3*
++F: arch/m68k/sun3*/
++F: drivers/net/ethernet/i825xx/sun3*
++
++SUN4I LOW RES ADC ATTACHED TABLET KEYS DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/input/allwinner,sun4i-a10-lradc-keys.yaml
++F: drivers/input/keyboard/sun4i-lradc-keys.c
++
++SUNDANCE NETWORK DRIVER
++M: Denis Kirjanov <kda@linux-powerpc.org>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/dlink/sundance.c
++
++SUPERH
++M: Yoshinori Sato <ysato@users.sourceforge.jp>
++M: Rich Felker <dalias@libc.org>
++L: linux-sh@vger.kernel.org
++S: Maintained
++Q: http://patchwork.kernel.org/project/linux-sh/list/
++F: Documentation/sh/
++F: arch/sh/
++F: drivers/sh/
++
++SUSPEND TO RAM
++M: "Rafael J. Wysocki" <rafael@kernel.org>
++M: Len Brown <len.brown@intel.com>
++M: Pavel Machek <pavel@ucw.cz>
++L: linux-pm@vger.kernel.org
++S: Supported
++B: https://bugzilla.kernel.org
++F: Documentation/power/
++F: arch/x86/kernel/acpi/
++F: drivers/base/power/
++F: include/linux/freezer.h
++F: include/linux/pm.h
++F: include/linux/suspend.h
++F: kernel/power/
++
++SVGA HANDLING
++M: Martin Mares <mj@ucw.cz>
++L: linux-video@atrey.karlin.mff.cuni.cz
++S: Maintained
++F: Documentation/admin-guide/svga.rst
++F: arch/x86/boot/video*
++
++SWIOTLB SUBSYSTEM
++M: Christoph Hellwig <hch@infradead.org>
++L: iommu@lists.linux-foundation.org
++S: Supported
++W: http://git.infradead.org/users/hch/dma-mapping.git
++T: git git://git.infradead.org/users/hch/dma-mapping.git
++F: arch/*/kernel/pci-swiotlb.c
++F: include/linux/swiotlb.h
++F: kernel/dma/swiotlb.c
++
++SWITCHDEV
++M: Jiri Pirko <jiri@resnulli.us>
++M: Ivan Vecera <ivecera@redhat.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: include/net/switchdev.h
++F: net/switchdev/
++
++SY8106A REGULATOR DRIVER
++M: Icenowy Zheng <icenowy@aosc.io>
++S: Maintained
++F: Documentation/devicetree/bindings/regulator/silergy,sy8106a.yaml
++F: drivers/regulator/sy8106a-regulator.c
++
++SYNC FILE FRAMEWORK
++M: Sumit Semwal <sumit.semwal@linaro.org>
++R: Gustavo Padovan <gustavo@padovan.org>
++L: linux-media@vger.kernel.org
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/driver-api/sync_file.rst
++F: drivers/dma-buf/dma-fence*
++F: drivers/dma-buf/sw_sync.c
++F: drivers/dma-buf/sync_*
++F: include/linux/sync_file.h
++F: include/uapi/linux/sync_file.h
++
++SYNOPSYS ARC ARCHITECTURE
++M: Vineet Gupta <vgupta@kernel.org>
++L: linux-snps-arc@lists.infradead.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc.git
++F: Documentation/devicetree/bindings/arc/*
++F: Documentation/devicetree/bindings/interrupt-controller/snps,arc*
++F: arch/arc/
++F: drivers/clocksource/arc_timer.c
++F: drivers/tty/serial/arc_uart.c
++
++SYNOPSYS ARC HSDK SDP pll clock driver
++M: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
++S: Supported
++F: Documentation/devicetree/bindings/clock/snps,hsdk-pll-clock.txt
++F: drivers/clk/clk-hsdk-pll.c
++
++SYNOPSYS ARC SDP clock driver
++M: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
++S: Supported
++F: Documentation/devicetree/bindings/clock/snps,pll-clock.txt
++F: drivers/clk/axs10x/*
++
++SYNOPSYS ARC SDP platform support
++M: Alexey Brodkin <abrodkin@synopsys.com>
++S: Supported
++F: Documentation/devicetree/bindings/arc/axs10*
++F: arch/arc/boot/dts/ax*
++F: arch/arc/plat-axs10x
++
++SYNOPSYS AXS10x RESET CONTROLLER DRIVER
++M: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
++S: Supported
++F: Documentation/devicetree/bindings/reset/snps,axs10x-reset.txt
++F: drivers/reset/reset-axs10x.c
++
++SYNOPSYS CREG GPIO DRIVER
++M: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
++S: Maintained
++F: Documentation/devicetree/bindings/gpio/snps,creg-gpio.txt
++F: drivers/gpio/gpio-creg-snps.c
++
++SYNOPSYS DESIGNWARE 8250 UART DRIVER
++R: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
++S: Maintained
++F: drivers/tty/serial/8250/8250_dw.c
++F: drivers/tty/serial/8250/8250_dwlib.*
++F: drivers/tty/serial/8250/8250_lpss.c
++
++SYNOPSYS DESIGNWARE APB GPIO DRIVER
++M: Hoan Tran <hoan@os.amperecomputing.com>
++M: Serge Semin <fancer.lancer@gmail.com>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/gpio/snps,dw-apb-gpio.yaml
++F: drivers/gpio/gpio-dwapb.c
++
++SYNOPSYS DESIGNWARE APB SSI DRIVER
++M: Serge Semin <fancer.lancer@gmail.com>
++L: linux-spi@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
++F: drivers/spi/spi-dw*
++
++SYNOPSYS DESIGNWARE AXI DMAC DRIVER
++M: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
++S: Maintained
++F: Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
++F: drivers/dma/dw-axi-dmac/
++
++SYNOPSYS DESIGNWARE DMAC DRIVER
++M: Viresh Kumar <vireshk@kernel.org>
++R: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
++S: Maintained
++F: Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml
++F: drivers/dma/dw/
++F: include/dt-bindings/dma/dw-dmac.h
++F: include/linux/dma/dw.h
++F: include/linux/platform_data/dma-dw.h
++
++SYNOPSYS DESIGNWARE ENTERPRISE ETHERNET DRIVER
++M: Jose Abreu <Jose.Abreu@synopsys.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/synopsys/
++
++SYNOPSYS DESIGNWARE ETHERNET XPCS DRIVER
++M: Jose Abreu <Jose.Abreu@synopsys.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/pcs/pcs-xpcs.c
++F: drivers/net/pcs/pcs-xpcs.h
++F: include/linux/pcs/pcs-xpcs.h
++
++SYNOPSYS DESIGNWARE I2C DRIVER
++M: Jarkko Nikula <jarkko.nikula@linux.intel.com>
++R: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
++R: Mika Westerberg <mika.westerberg@linux.intel.com>
++L: linux-i2c@vger.kernel.org
++S: Maintained
++F: drivers/i2c/busses/i2c-designware-*
++
++SYNOPSYS DESIGNWARE MMC/SD/SDIO DRIVER
++M: Jaehoon Chung <jh80.chung@samsung.com>
++L: linux-mmc@vger.kernel.org
++S: Maintained
++F: drivers/mmc/host/dw_mmc*
++
++SYNOPSYS HSDK RESET CONTROLLER DRIVER
++M: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
++S: Supported
++F: Documentation/devicetree/bindings/reset/snps,hsdk-reset.txt
++F: drivers/reset/reset-hsdk.c
++F: include/dt-bindings/reset/snps,hsdk-reset.h
++
++SYNOPSYS SDHCI COMPLIANT DWC MSHC DRIVER
++M: Prabu Thangamuthu <prabu.t@synopsys.com>
++M: Manjunath M B <manjumb@synopsys.com>
++L: linux-mmc@vger.kernel.org
++S: Maintained
++F: drivers/mmc/host/sdhci-pci-dwc-mshc.c
++
++SYSTEM CONFIGURATION (SYSCON)
++M: Lee Jones <lee.jones@linaro.org>
++M: Arnd Bergmann <arnd@arndb.de>
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git
++F: drivers/mfd/syscon.c
++
++SYSTEM CONTROL & POWER/MANAGEMENT INTERFACE (SCPI/SCMI) Message Protocol drivers
++M: Sudeep Holla <sudeep.holla@arm.com>
++R: Cristian Marussi <cristian.marussi@arm.com>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/firmware/arm,sc[mp]i.yaml
++F: drivers/clk/clk-sc[mp]i.c
++F: drivers/cpufreq/sc[mp]i-cpufreq.c
++F: drivers/firmware/arm_scmi/
++F: drivers/firmware/arm_scpi.c
++F: drivers/regulator/scmi-regulator.c
++F: drivers/reset/reset-scmi.c
++F: include/linux/sc[mp]i_protocol.h
++F: include/trace/events/scmi.h
++F: include/uapi/linux/virtio_scmi.h
++
++SYSTEM RESET/SHUTDOWN DRIVERS
++M: Sebastian Reichel <sre@kernel.org>
++L: linux-pm@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply.git
++F: Documentation/devicetree/bindings/power/reset/
++F: drivers/power/reset/
++
++SYSTEM TRACE MODULE CLASS
++M: Alexander Shishkin <alexander.shishkin@linux.intel.com>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/ash/stm.git
++F: Documentation/trace/stm.rst
++F: drivers/hwtracing/stm/
++F: include/linux/stm.h
++F: include/uapi/linux/stm.h
++
++SYSTEM76 ACPI DRIVER
++M: Jeremy Soller <jeremy@system76.com>
++M: System76 Product Development <productdev@system76.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/system76_acpi.c
++
++SYSV FILESYSTEM
++M: Christoph Hellwig <hch@infradead.org>
++S: Maintained
++F: Documentation/filesystems/sysv-fs.rst
++F: fs/sysv/
++F: include/linux/sysv_fs.h
++
++TASKSTATS STATISTICS INTERFACE
++M: Balbir Singh <bsingharora@gmail.com>
++S: Maintained
++F: Documentation/accounting/taskstats*
++F: include/linux/taskstats*
++F: kernel/taskstats.c
++
++TC subsystem
++M: Jamal Hadi Salim <jhs@mojatatu.com>
++M: Cong Wang <xiyou.wangcong@gmail.com>
++M: Jiri Pirko <jiri@resnulli.us>
++L: netdev@vger.kernel.org
++S: Maintained
++F: include/net/pkt_cls.h
++F: include/net/pkt_sched.h
++F: include/net/tc_act/
++F: include/uapi/linux/pkt_cls.h
++F: include/uapi/linux/pkt_sched.h
++F: include/uapi/linux/tc_act/
++F: include/uapi/linux/tc_ematch/
++F: net/sched/
++
++TC90522 MEDIA DRIVER
++M: Akihiro Tsukada <tskd08@gmail.com>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++F: drivers/media/dvb-frontends/tc90522*
++
++TCP LOW PRIORITY MODULE
++M: "Wong Hoi Sing, Edison" <hswong3i@gmail.com>
++M: "Hung Hing Lun, Mike" <hlhung3i@gmail.com>
++S: Maintained
++W: http://tcp-lp-mod.sourceforge.net/
++F: net/ipv4/tcp_lp.c
++
++TDA10071 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/dvb-frontends/tda10071*
++
++TDA18212 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/tuners/tda18212*
++
++TDA18218 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/tuners/tda18218*
++
++TDA18250 MEDIA DRIVER
++M: Olli Salonen <olli.salonen@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/tuners/tda18250*
++
++TDA18271 MEDIA DRIVER
++M: Michael Krufky <mkrufky@linuxtv.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://github.com/mkrufky
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/mkrufky/tuners.git
++F: drivers/media/tuners/tda18271*
++
++TDA1997x MEDIA DRIVER
++M: Tim Harvey <tharvey@gateworks.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++F: drivers/media/i2c/tda1997x.*
++
++TDA827x MEDIA DRIVER
++M: Michael Krufky <mkrufky@linuxtv.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://github.com/mkrufky
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/mkrufky/tuners.git
++F: drivers/media/tuners/tda8290.*
++
++TDA8290 MEDIA DRIVER
++M: Michael Krufky <mkrufky@linuxtv.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://github.com/mkrufky
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/mkrufky/tuners.git
++F: drivers/media/tuners/tda8290.*
++
++TDA9840 MEDIA DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/tda9840*
++
++TEA5761 TUNER DRIVER
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-media@vger.kernel.org
++S: Odd fixes
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/tuners/tea5761.*
++
++TEA5767 TUNER DRIVER
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/tuners/tea5767.*
++
++TEA6415C MEDIA DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/tea6415c*
++
++TEA6420 MEDIA DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/i2c/tea6420*
++
++TEAM DRIVER
++M: Jiri Pirko <jiri@resnulli.us>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/team/
++F: include/linux/if_team.h
++F: include/uapi/linux/if_team.h
++
++TECHNOLOGIC SYSTEMS TS-5500 PLATFORM SUPPORT
++M: "Savoir-faire Linux Inc." <kernel@savoirfairelinux.com>
++S: Maintained
++F: arch/x86/platform/ts5500/
++
++TECHNOTREND USB IR RECEIVER
++M: Sean Young <sean@mess.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/rc/ttusbir.c
++
++TECHWELL TW9910 VIDEO DECODER
++L: linux-media@vger.kernel.org
++S: Orphan
++F: drivers/media/i2c/tw9910.c
++F: include/media/i2c/tw9910.h
++
++TEE SUBSYSTEM
++M: Jens Wiklander <jens.wiklander@linaro.org>
++R: Sumit Garg <sumit.garg@linaro.org>
++L: op-tee@lists.trustedfirmware.org
++S: Maintained
++F: Documentation/staging/tee.rst
++F: drivers/tee/
++F: include/linux/tee_drv.h
++F: include/uapi/linux/tee.h
++
++TEGRA ARCHITECTURE SUPPORT
++M: Thierry Reding <thierry.reding@gmail.com>
++M: Jonathan Hunter <jonathanh@nvidia.com>
++L: linux-tegra@vger.kernel.org
++S: Supported
++Q: http://patchwork.ozlabs.org/project/linux-tegra/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git
++N: [^a-z]tegra
++
++TEGRA CLOCK DRIVER
++M: Peter De Schrijver <pdeschrijver@nvidia.com>
++M: Prashant Gaikwad <pgaikwad@nvidia.com>
++S: Supported
++F: drivers/clk/tegra/
++
++TEGRA DMA DRIVERS
++M: Laxman Dewangan <ldewangan@nvidia.com>
++M: Jon Hunter <jonathanh@nvidia.com>
++S: Supported
++F: drivers/dma/tegra*
++
++TEGRA I2C DRIVER
++M: Laxman Dewangan <ldewangan@nvidia.com>
++R: Dmitry Osipenko <digetx@gmail.com>
++S: Supported
++F: drivers/i2c/busses/i2c-tegra.c
++
++TEGRA IOMMU DRIVERS
++M: Thierry Reding <thierry.reding@gmail.com>
++R: Krishna Reddy <vdumpa@nvidia.com>
++L: linux-tegra@vger.kernel.org
++S: Supported
++F: drivers/iommu/arm/arm-smmu/arm-smmu-nvidia.c
++F: drivers/iommu/tegra*
++
++TEGRA KBC DRIVER
++M: Laxman Dewangan <ldewangan@nvidia.com>
++S: Supported
++F: drivers/input/keyboard/tegra-kbc.c
++
++TEGRA NAND DRIVER
++M: Stefan Agner <stefan@agner.ch>
++M: Lucas Stach <dev@lynxeye.de>
++S: Maintained
++F: Documentation/devicetree/bindings/mtd/nvidia-tegra20-nand.txt
++F: drivers/mtd/nand/raw/tegra_nand.c
++
++TEGRA PWM DRIVER
++M: Thierry Reding <thierry.reding@gmail.com>
++S: Supported
++F: drivers/pwm/pwm-tegra.c
++
++TEGRA SERIAL DRIVER
++M: Laxman Dewangan <ldewangan@nvidia.com>
++S: Supported
++F: drivers/tty/serial/serial-tegra.c
++
++TEGRA SPI DRIVER
++M: Laxman Dewangan <ldewangan@nvidia.com>
++S: Supported
++F: drivers/spi/spi-tegra*
++
++TEGRA QUAD SPI DRIVER
++M: Thierry Reding <thierry.reding@gmail.com>
++M: Jonathan Hunter <jonathanh@nvidia.com>
++M: Sowjanya Komatineni <skomatineni@nvidia.com>
++L: linux-tegra@vger.kernel.org
++S: Maintained
++F: drivers/spi/spi-tegra210-quad.c
++
++TEGRA VIDEO DRIVER
++M: Thierry Reding <thierry.reding@gmail.com>
++M: Jonathan Hunter <jonathanh@nvidia.com>
++M: Sowjanya Komatineni <skomatineni@nvidia.com>
++L: linux-media@vger.kernel.org
++L: linux-tegra@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
++F: drivers/staging/media/tegra-video/
++
++TEGRA XUSB PADCTL DRIVER
++M: JC Kuo <jckuo@nvidia.com>
++S: Supported
++F: drivers/phy/tegra/xusb*
++
++TEHUTI ETHERNET DRIVER
++M: Andy Gospodarek <andy@greyhouse.net>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/ethernet/tehuti/*
++
++TELECOM CLOCK DRIVER FOR MCPL0010
++M: Mark Gross <mark.gross@intel.com>
++S: Supported
++F: drivers/char/tlclk.c
++
++TEMPO SEMICONDUCTOR DRIVERS
++M: Steven Eckhoff <steven.eckhoff.opensource@gmail.com>
++S: Maintained
++F: Documentation/devicetree/bindings/sound/tscs*.txt
++F: sound/soc/codecs/tscs*.c
++F: sound/soc/codecs/tscs*.h
++
++TENSILICA XTENSA PORT (xtensa)
++M: Chris Zankel <chris@zankel.net>
++M: Max Filippov <jcmvbkbc@gmail.com>
++L: linux-xtensa@linux-xtensa.org
++S: Maintained
++T: git git://github.com/czankel/xtensa-linux.git
++F: arch/xtensa/
++F: drivers/irqchip/irq-xtensa-*
++
++TEXAS INSTRUMENTS ASoC DRIVERS
++M: Peter Ujfalusi <peter.ujfalusi@gmail.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++F: sound/soc/ti/
++
++TEXAS INSTRUMENTS' DAC7612 DAC DRIVER
++M: Ricardo Ribalda <ribalda@kernel.org>
++L: linux-iio@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/iio/dac/ti,dac7612.yaml
++F: drivers/iio/dac/ti-dac7612.c
++
++TEXAS INSTRUMENTS DMA DRIVERS
++M: Peter Ujfalusi <peter.ujfalusi@gmail.com>
++L: dmaengine@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/dma/ti-dma-crossbar.txt
++F: Documentation/devicetree/bindings/dma/ti-edma.txt
++F: Documentation/devicetree/bindings/dma/ti/
++F: drivers/dma/ti/
++X: drivers/dma/ti/cppi41.c
++F: include/linux/dma/k3-udma-glue.h
++F: include/linux/dma/ti-cppi5.h
++F: include/linux/dma/k3-psil.h
++
++TEXAS INSTRUMENTS' SYSTEM CONTROL INTERFACE (TISCI) PROTOCOL DRIVER
++M: Nishanth Menon <nm@ti.com>
++M: Tero Kristo <kristo@kernel.org>
++M: Santosh Shilimkar <ssantosh@kernel.org>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/arm/keystone/ti,k3-sci-common.yaml
++F: Documentation/devicetree/bindings/arm/keystone/ti,sci.txt
++F: Documentation/devicetree/bindings/clock/ti,sci-clk.yaml
++F: Documentation/devicetree/bindings/interrupt-controller/ti,sci-inta.yaml
++F: Documentation/devicetree/bindings/interrupt-controller/ti,sci-intr.yaml
++F: Documentation/devicetree/bindings/reset/ti,sci-reset.yaml
++F: Documentation/devicetree/bindings/soc/ti/sci-pm-domain.yaml
++F: drivers/clk/keystone/sci-clk.c
++F: drivers/firmware/ti_sci*
++F: drivers/irqchip/irq-ti-sci-inta.c
++F: drivers/irqchip/irq-ti-sci-intr.c
++F: drivers/reset/reset-ti-sci.c
++F: drivers/soc/ti/ti_sci_inta_msi.c
++F: drivers/soc/ti/ti_sci_pm_domains.c
++F: include/dt-bindings/soc/ti,sci_pm_domain.h
++F: include/linux/soc/ti/ti_sci_inta_msi.h
++F: include/linux/soc/ti/ti_sci_protocol.h
++
++TEXAS INSTRUMENTS TPS23861 PoE PSE DRIVER
++M: Robert Marko <robert.marko@sartura.hr>
++M: Luka Perkov <luka.perkov@sartura.hr>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/hwmon/ti,tps23861.yaml
++F: Documentation/hwmon/tps23861.rst
++F: drivers/hwmon/tps23861.c
++
++TEXAS INSTRUMENTS' TMP117 TEMPERATURE SENSOR DRIVER
++M: Puranjay Mohan <puranjay12@gmail.com>
++L: linux-iio@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/iio/temperature/ti,tmp117.yaml
++F: drivers/iio/temperature/tmp117.c
++
++THANKO'S RAREMONO AM/FM/SW RADIO RECEIVER USB DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/radio/radio-raremono.c
++
++THERMAL
++M: Rafael J. Wysocki <rafael@kernel.org>
++M: Daniel Lezcano <daniel.lezcano@linaro.org>
++R: Amit Kucheria <amitk@kernel.org>
++R: Zhang Rui <rui.zhang@intel.com>
++L: linux-pm@vger.kernel.org
++S: Supported
++Q: https://patchwork.kernel.org/project/linux-pm/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git thermal
++F: Documentation/devicetree/bindings/thermal/
++F: drivers/thermal/
++F: include/linux/cpu_cooling.h
++F: include/linux/thermal.h
++F: include/uapi/linux/thermal.h
++F: tools/thermal/
++
++THERMAL DRIVER FOR AMLOGIC SOCS
++M: Guillaume La Roque <glaroque@baylibre.com>
++L: linux-pm@vger.kernel.org
++L: linux-amlogic@lists.infradead.org
++S: Supported
++W: http://linux-meson.com/
++F: Documentation/devicetree/bindings/thermal/amlogic,thermal.yaml
++F: drivers/thermal/amlogic_thermal.c
++
++THERMAL/CPU_COOLING
++M: Amit Daniel Kachhap <amit.kachhap@gmail.com>
++M: Daniel Lezcano <daniel.lezcano@linaro.org>
++M: Viresh Kumar <viresh.kumar@linaro.org>
++R: Lukasz Luba <lukasz.luba@arm.com>
++L: linux-pm@vger.kernel.org
++S: Supported
++F: Documentation/driver-api/thermal/cpu-cooling-api.rst
++F: Documentation/driver-api/thermal/cpu-idle-cooling.rst
++F: drivers/thermal/cpufreq_cooling.c
++F: drivers/thermal/cpuidle_cooling.c
++F: include/linux/cpu_cooling.h
++
++THERMAL/POWER_ALLOCATOR
++M: Lukasz Luba <lukasz.luba@arm.com>
++L: linux-pm@vger.kernel.org
++S: Maintained
++F: Documentation/driver-api/thermal/power_allocator.rst
++F: drivers/thermal/gov_power_allocator.c
++F: include/trace/events/thermal_power_allocator.h
++
++THINKPAD ACPI EXTRAS DRIVER
++M: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
++L: ibm-acpi-devel@lists.sourceforge.net
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++W: http://ibm-acpi.sourceforge.net
++W: http://thinkwiki.org/wiki/Ibm-acpi
++T: git git://repo.or.cz/linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git
++F: drivers/platform/x86/thinkpad_acpi.c
++
++THINKPAD LMI DRIVER
++M: Mark Pearson <markpearson@lenovo.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-class-firmware-attributes
++F: drivers/platform/x86/think-lmi.?
++
++THUNDERBOLT DMA TRAFFIC TEST DRIVER
++M: Isaac Hazan <isaac.hazan@intel.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: drivers/thunderbolt/dma_test.c
++
++THUNDERBOLT DRIVER
++M: Andreas Noever <andreas.noever@gmail.com>
++M: Michael Jamet <michael.jamet@intel.com>
++M: Mika Westerberg <mika.westerberg@linux.intel.com>
++M: Yehezkel Bernat <YehezkelShB@gmail.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt.git
++F: Documentation/admin-guide/thunderbolt.rst
++F: drivers/thunderbolt/
++F: include/linux/thunderbolt.h
++
++THUNDERBOLT NETWORK DRIVER
++M: Michael Jamet <michael.jamet@intel.com>
++M: Mika Westerberg <mika.westerberg@linux.intel.com>
++M: Yehezkel Bernat <YehezkelShB@gmail.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/thunderbolt.c
++
++THUNDERX GPIO DRIVER
++M: Robert Richter <rric@kernel.org>
++S: Odd Fixes
++F: drivers/gpio/gpio-thunderx.c
++
++TI ADS131E0X ADC SERIES DRIVER
++M: Tomislav Denis <tomislav.denis@avl.com>
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml
++F: drivers/iio/adc/ti-ads131e08.c
++
++TI AM437X VPFE DRIVER
++M: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/mhadli/v4l-dvb-davinci_devices.git
++F: drivers/media/platform/am437x/
++
++TI BANDGAP AND THERMAL DRIVER
++M: Eduardo Valentin <edubezval@gmail.com>
++M: Keerthy <j-keerthy@ti.com>
++L: linux-pm@vger.kernel.org
++L: linux-omap@vger.kernel.org
++S: Maintained
++F: drivers/thermal/ti-soc-thermal/
++
++TI BQ27XXX POWER SUPPLY DRIVER
++F: drivers/power/supply/bq27xxx_battery.c
++F: drivers/power/supply/bq27xxx_battery_i2c.c
++F: include/linux/power/bq27xxx_battery.h
++
++TI CDCE706 CLOCK DRIVER
++M: Max Filippov <jcmvbkbc@gmail.com>
++S: Maintained
++F: drivers/clk/clk-cdce706.c
++
++TI CLOCK DRIVER
++M: Tero Kristo <kristo@kernel.org>
++L: linux-omap@vger.kernel.org
++S: Odd Fixes
++F: drivers/clk/ti/
++F: include/linux/clk/ti.h
++
++TI DAVINCI MACHINE SUPPORT
++M: Sekhar Nori <nsekhar@ti.com>
++R: Bartosz Golaszewski <brgl@bgdev.pl>
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci.git
++F: Documentation/devicetree/bindings/i2c/i2c-davinci.txt
++F: arch/arm/boot/dts/da850*
++F: arch/arm/mach-davinci/
++F: drivers/i2c/busses/i2c-davinci.c
++
++TI DAVINCI SERIES CLOCK DRIVER
++M: David Lechner <david@lechnology.com>
++R: Sekhar Nori <nsekhar@ti.com>
++S: Maintained
++F: Documentation/devicetree/bindings/clock/ti/davinci/
++F: drivers/clk/davinci/
++
++TI DAVINCI SERIES GPIO DRIVER
++M: Keerthy <j-keerthy@ti.com>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/gpio/gpio-davinci.yaml
++F: drivers/gpio/gpio-davinci.c
++
++TI DAVINCI SERIES MEDIA DRIVER
++M: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/mhadli/v4l-dvb-davinci_devices.git
++F: drivers/media/platform/davinci/
++F: include/media/davinci/
++
++TI ENHANCED QUADRATURE ENCODER PULSE (eQEP) DRIVER
++R: David Lechner <david@lechnology.com>
++L: linux-iio@vger.kernel.org
++F: Documentation/devicetree/bindings/counter/ti-eqep.yaml
++F: drivers/counter/ti-eqep.c
++
++TI ETHERNET SWITCH DRIVER (CPSW)
++R: Grygorii Strashko <grygorii.strashko@ti.com>
++L: linux-omap@vger.kernel.org
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/ti/cpsw*
++F: drivers/net/ethernet/ti/davinci*
++
++TI FLASH MEDIA MEMORYSTICK/MMC DRIVERS
++M: Alex Dubov <oakad@yahoo.com>
++S: Maintained
++W: http://tifmxx.berlios.de/
++F: drivers/memstick/host/tifm_ms.c
++F: drivers/misc/tifm*
++F: drivers/mmc/host/tifm_sd.c
++F: include/linux/tifm.h
++
++TI KEYSTONE MULTICORE NAVIGATOR DRIVERS
++M: Santosh Shilimkar <ssantosh@kernel.org>
++L: linux-kernel@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone.git
++F: drivers/soc/ti/*
++
++TI LM49xxx FAMILY ASoC CODEC DRIVERS
++M: M R Swami Reddy <mr.swami.reddy@ti.com>
++M: Vishwas A Deshpande <vishwas.a.deshpande@ti.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++F: sound/soc/codecs/isabelle*
++F: sound/soc/codecs/lm49453*
++
++TI PCM3060 ASoC CODEC DRIVER
++M: Kirill Marinushkin <kmarinushkin@birdec.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++F: Documentation/devicetree/bindings/sound/pcm3060.txt
++F: sound/soc/codecs/pcm3060*
++
++TI TAS571X FAMILY ASoC CODEC DRIVER
++M: Kevin Cernekee <cernekee@chromium.org>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Odd Fixes
++F: sound/soc/codecs/tas571x*
++
++TI TRF7970A NFC DRIVER
++M: Mark Greer <mgreer@animalcreek.com>
++L: linux-wireless@vger.kernel.org
++L: linux-nfc@lists.01.org (subscribers-only)
++S: Supported
++F: Documentation/devicetree/bindings/net/nfc/trf7970a.txt
++F: drivers/nfc/trf7970a.c
++
++TI TSC2046 ADC DRIVER
++M: Oleksij Rempel <o.rempel@pengutronix.de>
++R: kernel@pengutronix.de
++L: linux-iio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml
++F: drivers/iio/adc/ti-tsc2046.c
++
++TI TWL4030 SERIES SOC CODEC DRIVER
++M: Peter Ujfalusi <peter.ujfalusi@gmail.com>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++F: sound/soc/codecs/twl4030*
++
++TI VPE/CAL DRIVERS
++M: Benoit Parrot <bparrot@ti.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: http://linuxtv.org/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++F: Documentation/devicetree/bindings/media/ti,cal.yaml
++F: Documentation/devicetree/bindings/media/ti,vpe.yaml
++F: drivers/media/platform/ti-vpe/
++
++TI WILINK WIRELESS DRIVERS
++L: linux-wireless@vger.kernel.org
++S: Orphan
++W: https://wireless.wiki.kernel.org/en/users/Drivers/wl12xx
++W: https://wireless.wiki.kernel.org/en/users/Drivers/wl1251
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/luca/wl12xx.git
++F: drivers/net/wireless/ti/
++F: include/linux/wl12xx.h
++
++TIMEKEEPING, CLOCKSOURCE CORE, NTP, ALARMTIMER
++M: John Stultz <john.stultz@linaro.org>
++M: Thomas Gleixner <tglx@linutronix.de>
++R: Stephen Boyd <sboyd@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/core
++F: include/linux/clocksource.h
++F: include/linux/time.h
++F: include/linux/timex.h
++F: include/uapi/linux/time.h
++F: include/uapi/linux/timex.h
++F: kernel/time/alarmtimer.c
++F: kernel/time/clocksource.c
++F: kernel/time/ntp.c
++F: kernel/time/time*.c
++F: tools/testing/selftests/timers/
++
++TIPC NETWORK LAYER
++M: Jon Maloy <jmaloy@redhat.com>
++M: Ying Xue <ying.xue@windriver.com>
++L: netdev@vger.kernel.org (core kernel code)
++L: tipc-discussion@lists.sourceforge.net (user apps, general discussion)
++S: Maintained
++W: http://tipc.sourceforge.net/
++F: include/uapi/linux/tipc*.h
++F: net/tipc/
++
++TLAN NETWORK DRIVER
++M: Samuel Chessman <chessman@tux.org>
++L: tlan-devel@lists.sourceforge.net (subscribers-only)
++S: Maintained
++W: http://sourceforge.net/projects/tlan/
++F: Documentation/networking/device_drivers/ethernet/ti/tlan.rst
++F: drivers/net/ethernet/ti/tlan.*
++
++TM6000 VIDEO4LINUX DRIVER
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-media@vger.kernel.org
++S: Odd fixes
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/admin-guide/media/tm6000*
++F: drivers/media/usb/tm6000/
++
++TMIO/SDHI MMC DRIVER
++M: Wolfram Sang <wsa+renesas@sang-engineering.com>
++L: linux-mmc@vger.kernel.org
++S: Supported
++F: drivers/mmc/host/renesas_sdhi*
++F: drivers/mmc/host/tmio_mmc*
++F: include/linux/mfd/tmio.h
++
++TMP401 HARDWARE MONITOR DRIVER
++M: Guenter Roeck <linux@roeck-us.net>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/tmp401.rst
++F: drivers/hwmon/tmp401.c
++
++TMP513 HARDWARE MONITOR DRIVER
++M: Eric Tremblay <etremblay@distech-controls.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/tmp513.rst
++F: drivers/hwmon/tmp513.c
++
++TMPFS (SHMEM FILESYSTEM)
++M: Hugh Dickins <hughd@google.com>
++L: linux-mm@kvack.org
++S: Maintained
++F: include/linux/shmem_fs.h
++F: mm/shmem.c
++
++TOMOYO SECURITY MODULE
++M: Kentaro Takeda <takedakn@nttdata.co.jp>
++M: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
++L: tomoyo-dev-en@lists.osdn.me (subscribers-only, for developers in English)
++L: tomoyo-users-en@lists.osdn.me (subscribers-only, for users in English)
++L: tomoyo-dev@lists.osdn.me (subscribers-only, for developers in Japanese)
++L: tomoyo-users@lists.osdn.me (subscribers-only, for users in Japanese)
++S: Maintained
++W: https://tomoyo.osdn.jp/
++F: security/tomoyo/
++
++TOPSTAR LAPTOP EXTRAS DRIVER
++M: Herton Ronaldo Krzesinski <herton@canonical.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/topstar-laptop.c
++
++TORTURE-TEST MODULES
++M: Davidlohr Bueso <dave@stgolabs.net>
++M: "Paul E. McKenney" <paulmck@kernel.org>
++M: Josh Triplett <josh@joshtriplett.org>
++L: linux-kernel@vger.kernel.org
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev
++F: Documentation/RCU/torture.rst
++F: kernel/locking/locktorture.c
++F: kernel/rcu/rcuscale.c
++F: kernel/rcu/rcutorture.c
++F: kernel/rcu/refscale.c
++F: kernel/torture.c
++
++TOSHIBA ACPI EXTRAS DRIVER
++M: Azael Avalos <coproscefalo@gmail.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/toshiba_acpi.c
++
++TOSHIBA BLUETOOTH DRIVER
++M: Azael Avalos <coproscefalo@gmail.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/toshiba_bluetooth.c
++
++TOSHIBA HDD ACTIVE PROTECTION SENSOR DRIVER
++M: Azael Avalos <coproscefalo@gmail.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/toshiba_haps.c
++
++TOSHIBA SMM DRIVER
++M: Jonathan Buzzard <jonathan@buzzard.org.uk>
++S: Maintained
++W: http://www.buzzard.org.uk/toshiba/
++F: drivers/char/toshiba.c
++F: include/linux/toshiba.h
++F: include/uapi/linux/toshiba.h
++
++TOSHIBA TC358743 DRIVER
++M: Mats Randgaard <matrandg@cisco.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/i2c/tc358743*
++F: include/media/i2c/tc358743.h
++
++TOSHIBA WMI HOTKEYS DRIVER
++M: Azael Avalos <coproscefalo@gmail.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/toshiba-wmi.c
++
++TPM DEVICE DRIVER
++M: Peter Huewe <peterhuewe@gmx.de>
++M: Jarkko Sakkinen <jarkko@kernel.org>
++R: Jason Gunthorpe <jgg@ziepe.ca>
++L: linux-integrity@vger.kernel.org
++S: Maintained
++W: https://kernsec.org/wiki/index.php/Linux_Kernel_Integrity
++Q: https://patchwork.kernel.org/project/linux-integrity/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git
++F: drivers/char/tpm/
++
++TRACING
++M: Steven Rostedt <rostedt@goodmis.org>
++M: Ingo Molnar <mingo@redhat.com>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf/core
++F: Documentation/trace/ftrace.rst
++F: arch/*/*/*/ftrace.h
++F: arch/*/kernel/ftrace.c
++F: fs/tracefs/
++F: include/*/ftrace.h
++F: include/linux/trace*.h
++F: include/trace/
++F: kernel/trace/
++F: tools/testing/selftests/ftrace/
++
++TRACING MMIO ACCESSES (MMIOTRACE)
++M: Steven Rostedt <rostedt@goodmis.org>
++M: Ingo Molnar <mingo@kernel.org>
++R: Karol Herbst <karolherbst@gmail.com>
++R: Pekka Paalanen <ppaalanen@gmail.com>
++L: linux-kernel@vger.kernel.org
++L: nouveau@lists.freedesktop.org
++S: Maintained
++F: arch/x86/mm/kmmio.c
++F: arch/x86/mm/mmio-mod.c
++F: arch/x86/mm/testmmiotrace.c
++F: include/linux/mmiotrace.h
++F: kernel/trace/trace_mmiotrace.c
++
++TRACING OS NOISE / LATENCY TRACERS
++M: Steven Rostedt <rostedt@goodmis.org>
++M: Daniel Bristot de Oliveira <bristot@kernel.org>
++S: Maintained
++F: kernel/trace/trace_osnoise.c
++F: include/trace/events/osnoise.h
++F: kernel/trace/trace_hwlat.c
++F: kernel/trace/trace_irqsoff.c
++F: kernel/trace/trace_sched_wakeup.c
++F: Documentation/trace/osnoise-tracer.rst
++F: Documentation/trace/timerlat-tracer.rst
++F: Documentation/trace/hwlat_detector.rst
++F: arch/*/kernel/trace.c
++
++TRADITIONAL CHINESE DOCUMENTATION
++M: Hu Haowen <src.res@email.cn>
++L: linux-doc-tw-discuss@lists.sourceforge.net
++S: Maintained
++W: https://github.com/srcres258/linux-doc
++T: git git://github.com/srcres258/linux-doc.git doc-zh-tw
++F: Documentation/translations/zh_TW/
++
++TRIVIAL PATCHES
++M: Jiri Kosina <trivial@kernel.org>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial.git
++K: ^Subject:.*(?i)trivial
++
++TTY LAYER
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++M: Jiri Slaby <jirislaby@kernel.org>
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git
++F: Documentation/driver-api/serial/
++F: drivers/tty/
++F: drivers/tty/serial/serial_core.c
++F: include/linux/selection.h
++F: include/linux/serial.h
++F: include/linux/serial_core.h
++F: include/linux/sysrq.h
++F: include/linux/tty*.h
++F: include/linux/vt.h
++F: include/linux/vt_*.h
++F: include/uapi/linux/serial.h
++F: include/uapi/linux/serial_core.h
++F: include/uapi/linux/tty.h
++
++TUA9001 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++W: http://palosaari.fi/linux/
++Q: http://patchwork.linuxtv.org/project/linux-media/list/
++T: git git://linuxtv.org/anttip/media_tree.git
++F: drivers/media/tuners/tua9001*
++
++TULIP NETWORK DRIVERS
++L: netdev@vger.kernel.org
++L: linux-parisc@vger.kernel.org
++S: Orphan
++F: drivers/net/ethernet/dec/tulip/
++
++TUN/TAP driver
++M: Maxim Krasnyansky <maxk@qti.qualcomm.com>
++S: Maintained
++W: http://vtun.sourceforge.net/tun
++F: Documentation/networking/tuntap.rst
++F: arch/um/os-Linux/drivers/
++
++TURBOCHANNEL SUBSYSTEM
++M: "Maciej W. Rozycki" <macro@orcam.me.uk>
++M: Ralf Baechle <ralf@linux-mips.org>
++L: linux-mips@vger.kernel.org
++S: Maintained
++Q: http://patchwork.linux-mips.org/project/linux-mips/list/
++F: drivers/tc/
++F: include/linux/tc.h
++
++TURBOSTAT UTILITY
++M: "Len Brown" <lenb@kernel.org>
++L: linux-pm@vger.kernel.org
++S: Supported
++Q: https://patchwork.kernel.org/project/linux-pm/list/
++B: https://bugzilla.kernel.org
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux.git turbostat
++F: tools/power/x86/turbostat/
++
++TW5864 VIDEO4LINUX DRIVER
++M: Bluecherry Maintainers <maintainers@bluecherrydvr.com>
++M: Anton Sviridenko <anton@corp.bluecherry.net>
++M: Andrey Utkin <andrey.utkin@corp.bluecherry.net>
++M: Andrey Utkin <andrey_utkin@fastmail.com>
++L: linux-media@vger.kernel.org
++S: Supported
++F: drivers/media/pci/tw5864/
++
++TW68 VIDEO4LINUX DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Odd Fixes
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/pci/tw68/
++
++TW686X VIDEO4LINUX DRIVER
++M: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: http://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/pci/tw686x/
++
++UACCE ACCELERATOR FRAMEWORK
++M: Zhangfei Gao <zhangfei.gao@linaro.org>
++M: Zhou Wang <wangzhou1@hisilicon.com>
++L: linux-accelerators@lists.ozlabs.org
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-driver-uacce
++F: Documentation/misc-devices/uacce.rst
++F: drivers/misc/uacce/
++F: include/linux/uacce.h
++F: include/uapi/misc/uacce/
++
++UBI FILE SYSTEM (UBIFS)
++M: Richard Weinberger <richard@nod.at>
++L: linux-mtd@lists.infradead.org
++S: Supported
++W: http://www.linux-mtd.infradead.org/doc/ubifs.html
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs.git next
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs.git fixes
++F: Documentation/filesystems/ubifs-authentication.rst
++F: Documentation/filesystems/ubifs.rst
++F: fs/ubifs/
++
++UCLINUX (M68KNOMMU AND COLDFIRE)
++M: Greg Ungerer <gerg@linux-m68k.org>
++L: linux-m68k@lists.linux-m68k.org
++L: uclinux-dev@uclinux.org (subscribers-only)
++S: Maintained
++W: http://www.linux-m68k.org/
++W: http://www.uclinux.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu.git
++F: arch/m68k/*/*_no.*
++F: arch/m68k/68*/
++F: arch/m68k/coldfire/
++F: arch/m68k/include/asm/*_no.*
++
++UDF FILESYSTEM
++M: Jan Kara <jack@suse.com>
++S: Maintained
++F: Documentation/filesystems/udf.rst
++F: fs/udf/
++
++UDRAW TABLET
++M: Bastien Nocera <hadess@hadess.net>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/hid/hid-udraw-ps3.c
++
++UFS FILESYSTEM
++M: Evgeniy Dushistov <dushistov@mail.ru>
++S: Maintained
++F: Documentation/admin-guide/ufs.rst
++F: fs/ufs/
++
++UHID USERSPACE HID IO DRIVER
++M: David Rheinsberg <david.rheinsberg@gmail.com>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/hid/uhid.c
++F: include/uapi/linux/uhid.h
++
++ULPI BUS
++M: Heikki Krogerus <heikki.krogerus@linux.intel.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: drivers/usb/common/ulpi.c
++F: include/linux/ulpi/
++
++UNICODE SUBSYSTEM
++M: Gabriel Krisman Bertazi <krisman@collabora.com>
++L: linux-fsdevel@vger.kernel.org
++S: Supported
++F: fs/unicode/
++
++UNIFDEF
++M: Tony Finch <dot@dotat.at>
++S: Maintained
++W: http://dotat.at/prog/unifdef
++F: scripts/unifdef.c
++
++UNIFORM CDROM DRIVER
++M: Phillip Potter <phil@philpotter.co.uk>
++S: Maintained
++F: Documentation/cdrom/
++F: drivers/cdrom/cdrom.c
++F: include/linux/cdrom.h
++F: include/uapi/linux/cdrom.h
++
++UNISYS S-PAR DRIVERS
++M: David Kershner <david.kershner@unisys.com>
++L: sparmaintainer@unisys.com (Unisys internal)
++S: Supported
++F: drivers/staging/unisys/
++F: drivers/visorbus/
++F: include/linux/visorbus.h
++
++UNIVERSAL FLASH STORAGE HOST CONTROLLER DRIVER
++R: Alim Akhtar <alim.akhtar@samsung.com>
++R: Avri Altman <avri.altman@wdc.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: Documentation/scsi/ufs.rst
++F: drivers/scsi/ufs/
++
++UNIVERSAL FLASH STORAGE HOST CONTROLLER DRIVER DWC HOOKS
++M: Pedro Sousa <pedrom.sousa@synopsys.com>
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: drivers/scsi/ufs/*dwc*
++
++UNIVERSAL FLASH STORAGE HOST CONTROLLER DRIVER MEDIATEK HOOKS
++M: Stanley Chu <stanley.chu@mediatek.com>
++L: linux-scsi@vger.kernel.org
++L: linux-mediatek@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: drivers/scsi/ufs/ufs-mediatek*
++
++UNSORTED BLOCK IMAGES (UBI)
++M: Richard Weinberger <richard@nod.at>
++L: linux-mtd@lists.infradead.org
++S: Supported
++W: http://www.linux-mtd.infradead.org/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs.git next
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs.git fixes
++F: drivers/mtd/ubi/
++F: include/linux/mtd/ubi.h
++F: include/uapi/mtd/ubi-user.h
++
++USB "USBNET" DRIVER FRAMEWORK
++M: Oliver Neukum <oneukum@suse.com>
++L: netdev@vger.kernel.org
++S: Maintained
++W: http://www.linux-usb.org/usbnet
++F: drivers/net/usb/usbnet.c
++F: include/linux/usb/usbnet.h
++
++USB ACM DRIVER
++M: Oliver Neukum <oneukum@suse.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: Documentation/usb/acm.rst
++F: drivers/usb/class/cdc-acm.*
++
++USB APPLE MFI FASTCHARGE DRIVER
++M: Bastien Nocera <hadess@hadess.net>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: drivers/usb/misc/apple-mfi-fastcharge.c
++
++USB AR5523 WIRELESS DRIVER
++M: Pontus Fuchs <pontus.fuchs@gmail.com>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++F: drivers/net/wireless/ath/ar5523/
++
++USB ATTACHED SCSI
++M: Oliver Neukum <oneukum@suse.com>
++L: linux-usb@vger.kernel.org
++L: linux-scsi@vger.kernel.org
++S: Maintained
++F: drivers/usb/storage/uas.c
++
++USB CDC ETHERNET DRIVER
++M: Oliver Neukum <oliver@neukum.org>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: drivers/net/usb/cdc_*.c
++F: include/uapi/linux/usb/cdc.h
++
++USB CHAOSKEY DRIVER
++M: Keith Packard <keithp@keithp.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: drivers/usb/misc/chaoskey.c
++
++USB CYPRESS C67X00 DRIVER
++L: linux-usb@vger.kernel.org
++S: Orphan
++F: drivers/usb/c67x00/
++
++USB DAVICOM DM9601 DRIVER
++M: Peter Korsgaard <peter@korsgaard.com>
++L: netdev@vger.kernel.org
++S: Maintained
++W: http://www.linux-usb.org/usbnet
++F: drivers/net/usb/dm9601.c
++
++USB EHCI DRIVER
++M: Alan Stern <stern@rowland.harvard.edu>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: Documentation/usb/ehci.rst
++F: drivers/usb/host/ehci*
++
++USB GADGET/PERIPHERAL SUBSYSTEM
++M: Felipe Balbi <balbi@kernel.org>
++L: linux-usb@vger.kernel.org
++S: Maintained
++W: http://www.linux-usb.org/gadget
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git
++F: drivers/usb/gadget/
++F: include/linux/usb/gadget*
++
++USB HID/HIDBP DRIVERS (USB KEYBOARDS, MICE, REMOTE CONTROLS, ...)
++M: Jiri Kosina <jikos@kernel.org>
++M: Benjamin Tissoires <benjamin.tissoires@redhat.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git
++F: Documentation/hid/hiddev.rst
++F: drivers/hid/usbhid/
++
++USB INTEL XHCI ROLE MUX DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: drivers/usb/roles/intel-xhci-usb-role-switch.c
++
++USB IP DRIVER FOR HISILICON KIRIN 960
++M: Yu Chen <chenyu56@huawei.com>
++M: Binghui Wang <wangbinghui@hisilicon.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/phy/hisilicon,hi3660-usb3.yaml
++F: drivers/phy/hisilicon/phy-hi3660-usb3.c
++
++USB IP DRIVER FOR HISILICON KIRIN 970
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/phy/hisilicon,hi3670-usb3.yaml
++F: drivers/phy/hisilicon/phy-hi3670-usb3.c
++
++USB ISP116X DRIVER
++M: Olav Kongas <ok@artecdesign.ee>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: drivers/usb/host/isp116x*
++F: include/linux/usb/isp116x.h
++
++USB ISP1760 DRIVER
++M: Rui Miguel Silva <rui.silva@linaro.org>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: drivers/usb/isp1760/*
++F: Documentation/devicetree/bindings/usb/nxp,isp1760.yaml
++
++USB LAN78XX ETHERNET DRIVER
++M: Woojung Huh <woojung.huh@microchip.com>
++M: UNGLinuxDriver@microchip.com
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/microchip,lan78xx.txt
++F: drivers/net/usb/lan78xx.*
++F: include/dt-bindings/net/microchip-lan78xx.h
++
++USB MASS STORAGE DRIVER
++M: Alan Stern <stern@rowland.harvard.edu>
++L: linux-usb@vger.kernel.org
++L: usb-storage@lists.one-eyed-alien.net
++S: Maintained
++F: drivers/usb/storage/
++
++USB MIDI DRIVER
++M: Clemens Ladisch <clemens@ladisch.de>
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
++F: sound/usb/midi.*
++
++USB NETWORKING DRIVERS
++L: linux-usb@vger.kernel.org
++S: Odd Fixes
++F: drivers/net/usb/
++
++USB OHCI DRIVER
++M: Alan Stern <stern@rowland.harvard.edu>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: Documentation/usb/ohci.rst
++F: drivers/usb/host/ohci*
++
++USB OTG FSM (Finite State Machine)
++M: Peter Chen <peter.chen@kernel.org>
++L: linux-usb@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb.git
++F: drivers/usb/common/usb-otg-fsm.c
++
++USB OVER IP DRIVER
++M: Valentina Manea <valentina.manea.m@gmail.com>
++M: Shuah Khan <shuah@kernel.org>
++M: Shuah Khan <skhan@linuxfoundation.org>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: Documentation/usb/usbip_protocol.rst
++F: drivers/usb/usbip/
++F: tools/testing/selftests/drivers/usb/usbip/
++F: tools/usb/usbip/
++
++USB PEGASUS DRIVER
++M: Petko Manolov <petkan@nucleusys.com>
++L: linux-usb@vger.kernel.org
++L: netdev@vger.kernel.org
++S: Maintained
++W: https://github.com/petkan/pegasus
++T: git git://github.com/petkan/pegasus.git
++F: drivers/net/usb/pegasus.*
++
++USB PHY LAYER
++M: Felipe Balbi <balbi@kernel.org>
++L: linux-usb@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git
++F: drivers/usb/phy/
++
++USB PRINTER DRIVER (usblp)
++M: Pete Zaitcev <zaitcev@redhat.com>
++L: linux-usb@vger.kernel.org
++S: Supported
++F: drivers/usb/class/usblp.c
++
++USB RAW GADGET DRIVER
++R: Andrey Konovalov <andreyknvl@gmail.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: Documentation/usb/raw-gadget.rst
++F: drivers/usb/gadget/legacy/raw_gadget.c
++F: include/uapi/linux/usb/raw_gadget.h
++
++USB QMI WWAN NETWORK DRIVER
++M: Bjørn Mork <bjorn@mork.no>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-class-net-qmi
++F: drivers/net/usb/qmi_wwan.c
++
++USB RTL8150 DRIVER
++M: Petko Manolov <petkan@nucleusys.com>
++L: linux-usb@vger.kernel.org
++L: netdev@vger.kernel.org
++S: Maintained
++W: https://github.com/petkan/rtl8150
++T: git git://github.com/petkan/rtl8150.git
++F: drivers/net/usb/rtl8150.c
++
++USB SERIAL SUBSYSTEM
++M: Johan Hovold <johan@kernel.org>
++L: linux-usb@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial.git
++F: Documentation/usb/usb-serial.rst
++F: drivers/usb/serial/
++F: include/linux/usb/serial.h
++
++USB SMSC75XX ETHERNET DRIVER
++M: Steve Glendinning <steve.glendinning@shawell.net>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/usb/smsc75xx.*
++
++USB SMSC95XX ETHERNET DRIVER
++M: Steve Glendinning <steve.glendinning@shawell.net>
++M: UNGLinuxDriver@microchip.com
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/usb/smsc95xx.*
++
++USB SUBSYSTEM
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++L: linux-usb@vger.kernel.org
++S: Supported
++W: http://www.linux-usb.org
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
++F: Documentation/devicetree/bindings/usb/
++F: Documentation/usb/
++F: drivers/usb/
++F: include/linux/usb.h
++F: include/linux/usb/
++
++USB TYPEC BUS FOR ALTERNATE MODES
++M: Heikki Krogerus <heikki.krogerus@linux.intel.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-bus-typec
++F: Documentation/driver-api/usb/typec_bus.rst
++F: drivers/usb/typec/altmodes/
++F: include/linux/usb/typec_altmode.h
++
++USB TYPEC CLASS
++M: Heikki Krogerus <heikki.krogerus@linux.intel.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: Documentation/ABI/testing/sysfs-class-typec
++F: Documentation/driver-api/usb/typec.rst
++F: drivers/usb/typec/
++F: include/linux/usb/typec.h
++
++USB TYPEC INTEL PMC MUX DRIVER
++M: Heikki Krogerus <heikki.krogerus@linux.intel.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: Documentation/firmware-guide/acpi/intel-pmc-mux.rst
++F: drivers/usb/typec/mux/intel_pmc_mux.c
++
++USB TYPEC PI3USB30532 MUX DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: drivers/usb/typec/mux/pi3usb30532.c
++
++USB TYPEC PORT CONTROLLER DRIVERS
++M: Guenter Roeck <linux@roeck-us.net>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: drivers/usb/typec/tcpm/
++
++USB UHCI DRIVER
++M: Alan Stern <stern@rowland.harvard.edu>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: drivers/usb/host/uhci*
++
++USB VIDEO CLASS
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++L: linux-uvc-devel@lists.sourceforge.net (subscribers-only)
++L: linux-media@vger.kernel.org
++S: Maintained
++W: http://www.ideasonboard.org/uvc/
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/usb/uvc/
++F: include/uapi/linux/uvcvideo.h
++
++USB WEBCAM GADGET
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++L: linux-usb@vger.kernel.org
++S: Maintained
++F: drivers/usb/gadget/function/*uvc*
++F: drivers/usb/gadget/legacy/webcam.c
++F: include/uapi/linux/usb/g_uvc.h
++
++USB WIRELESS RNDIS DRIVER (rndis_wlan)
++M: Jussi Kivilinna <jussi.kivilinna@iki.fi>
++L: linux-wireless@vger.kernel.org
++S: Maintained
++F: drivers/net/wireless/rndis_wlan.c
++
++USB XHCI DRIVER
++M: Mathias Nyman <mathias.nyman@intel.com>
++L: linux-usb@vger.kernel.org
++S: Supported
++F: drivers/usb/host/pci-quirks*
++F: drivers/usb/host/xhci*
++
++USB ZD1201 DRIVER
++L: linux-wireless@vger.kernel.org
++S: Orphan
++W: http://linux-lc100020.sourceforge.net
++F: drivers/net/wireless/zydas/zd1201.*
++
++USB ZR364XX DRIVER
++M: Antoine Jacquet <royale@zerezo.com>
++L: linux-usb@vger.kernel.org
++L: linux-media@vger.kernel.org
++S: Maintained
++W: http://royale.zerezo.com/zr364xx/
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/admin-guide/media/zr364xx*
++F: drivers/media/usb/zr364xx/
++
++USER-MODE LINUX (UML)
++M: Jeff Dike <jdike@addtoit.com>
++M: Richard Weinberger <richard@nod.at>
++M: Anton Ivanov <anton.ivanov@cambridgegreys.com>
++L: linux-um@lists.infradead.org
++S: Maintained
++W: http://user-mode-linux.sourceforge.net
++Q: https://patchwork.ozlabs.org/project/linux-um/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml.git
++F: Documentation/virt/uml/
++F: arch/um/
++F: arch/x86/um/
++F: fs/hostfs/
++
++USERSPACE COPYIN/COPYOUT (UIOVEC)
++M: Alexander Viro <viro@zeniv.linux.org.uk>
++S: Maintained
++F: include/linux/uio.h
++F: lib/iov_iter.c
++
++USERSPACE DMA BUFFER DRIVER
++M: Gerd Hoffmann <kraxel@redhat.com>
++L: dri-devel@lists.freedesktop.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/dma-buf/udmabuf.c
++F: include/uapi/linux/udmabuf.h
++
++USERSPACE I/O (UIO)
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
++F: Documentation/driver-api/uio-howto.rst
++F: drivers/uio/
++F: include/linux/uio_driver.h
++
++UTIL-LINUX PACKAGE
++M: Karel Zak <kzak@redhat.com>
++L: util-linux@vger.kernel.org
++S: Maintained
++W: http://en.wikipedia.org/wiki/Util-linux
++T: git git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git
++
++UUID HELPERS
++M: Christoph Hellwig <hch@lst.de>
++R: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.infradead.org/users/hch/uuid.git
++F: include/linux/uuid.h
++F: include/uapi/linux/uuid.h
++F: lib/test_uuid.c
++F: lib/uuid.c
++
++UV SYSFS DRIVER
++M: Justin Ernst <justin.ernst@hpe.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++F: drivers/platform/x86/uv_sysfs.c
++
++UVESAFB DRIVER
++M: Michal Januszewski <spock@gentoo.org>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++W: https://github.com/mjanusz/v86d
++F: Documentation/fb/uvesafb.rst
++F: drivers/video/fbdev/uvesafb.*
++
++Ux500 CLOCK DRIVERS
++M: Ulf Hansson <ulf.hansson@linaro.org>
++L: linux-clk@vger.kernel.org
++L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
++S: Maintained
++F: drivers/clk/ux500/
++
++VF610 NAND DRIVER
++M: Stefan Agner <stefan@agner.ch>
++L: linux-mtd@lists.infradead.org
++S: Supported
++F: drivers/mtd/nand/raw/vf610_nfc.c
++
++VFAT/FAT/MSDOS FILESYSTEM
++M: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
++S: Maintained
++F: Documentation/filesystems/vfat.rst
++F: fs/fat/
++
++VFIO DRIVER
++M: Alex Williamson <alex.williamson@redhat.com>
++R: Cornelia Huck <cohuck@redhat.com>
++L: kvm@vger.kernel.org
++S: Maintained
++T: git git://github.com/awilliam/linux-vfio.git
++F: Documentation/driver-api/vfio.rst
++F: drivers/vfio/
++F: include/linux/vfio.h
++F: include/linux/vfio_pci_core.h
++F: include/uapi/linux/vfio.h
++
++VFIO FSL-MC DRIVER
++M: Diana Craciun <diana.craciun@oss.nxp.com>
++L: kvm@vger.kernel.org
++S: Maintained
++F: drivers/vfio/fsl-mc/
++
++VFIO MEDIATED DEVICE DRIVERS
++M: Kirti Wankhede <kwankhede@nvidia.com>
++L: kvm@vger.kernel.org
++S: Maintained
++F: Documentation/driver-api/vfio-mediated-device.rst
++F: drivers/vfio/mdev/
++F: include/linux/mdev.h
++F: samples/vfio-mdev/
++
++VFIO PLATFORM DRIVER
++M: Eric Auger <eric.auger@redhat.com>
++L: kvm@vger.kernel.org
++S: Maintained
++F: drivers/vfio/platform/
++
++VGA_SWITCHEROO
++R: Lukas Wunner <lukas@wunner.de>
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: Documentation/gpu/vga-switcheroo.rst
++F: drivers/gpu/vga/vga_switcheroo.c
++F: include/linux/vga_switcheroo.h
++
++VIA RHINE NETWORK DRIVER
++S: Maintained
++M: Kevin Brace <kevinbrace@bracecomputerlab.com>
++F: drivers/net/ethernet/via/via-rhine.c
++
++VIA SD/MMC CARD CONTROLLER DRIVER
++M: Bruce Chang <brucechang@via.com.tw>
++M: Harald Welte <HaraldWelte@viatech.com>
++S: Maintained
++F: drivers/mmc/host/via-sdmmc.c
++
++VIA UNICHROME(PRO)/CHROME9 FRAMEBUFFER DRIVER
++M: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
++L: linux-fbdev@vger.kernel.org
++S: Maintained
++F: drivers/video/fbdev/via/
++F: include/linux/via-core.h
++F: include/linux/via-gpio.h
++F: include/linux/via_i2c.h
++
++VIA VELOCITY NETWORK DRIVER
++M: Francois Romieu <romieu@fr.zoreil.com>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/ethernet/via/via-velocity.*
++
++VICODEC VIRTUAL CODEC DRIVER
++M: Hans Verkuil <hverkuil-cisco@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/test-drivers/vicodec/*
++
++VIDEO I2C POLLING DRIVER
++M: Matt Ranostay <matt.ranostay@konsulko.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/i2c/video-i2c.c
++
++VIDEO MULTIPLEXER DRIVER
++M: Philipp Zabel <p.zabel@pengutronix.de>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/platform/video-mux.c
++
++VIDEOBUF2 FRAMEWORK
++M: Tomasz Figa <tfiga@chromium.org>
++M: Marek Szyprowski <m.szyprowski@samsung.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++F: drivers/media/common/videobuf2/*
++F: include/media/videobuf2-*
++
++VIMC VIRTUAL MEDIA CONTROLLER DRIVER
++M: Helen Koike <helen.koike@collabora.com>
++R: Shuah Khan <skhan@linuxfoundation.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/test-drivers/vimc/*
++
++VIRT LIB
++M: Alex Williamson <alex.williamson@redhat.com>
++M: Paolo Bonzini <pbonzini@redhat.com>
++L: kvm@vger.kernel.org
++S: Supported
++F: virt/lib/
++
++VIRTIO AND VHOST VSOCK DRIVER
++M: Stefan Hajnoczi <stefanha@redhat.com>
++M: Stefano Garzarella <sgarzare@redhat.com>
++L: kvm@vger.kernel.org
++L: virtualization@lists.linux-foundation.org
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/vhost/vsock.c
++F: include/linux/virtio_vsock.h
++F: include/uapi/linux/virtio_vsock.h
++F: net/vmw_vsock/virtio_transport.c
++F: net/vmw_vsock/virtio_transport_common.c
++
++VIRTIO BLOCK AND SCSI DRIVERS
++M: "Michael S. Tsirkin" <mst@redhat.com>
++M: Jason Wang <jasowang@redhat.com>
++R: Paolo Bonzini <pbonzini@redhat.com>
++R: Stefan Hajnoczi <stefanha@redhat.com>
++L: virtualization@lists.linux-foundation.org
++S: Maintained
++F: drivers/block/virtio_blk.c
++F: drivers/scsi/virtio_scsi.c
++F: drivers/vhost/scsi.c
++F: include/uapi/linux/virtio_blk.h
++F: include/uapi/linux/virtio_scsi.h
++
++VIRTIO CONSOLE DRIVER
++M: Amit Shah <amit@kernel.org>
++L: virtualization@lists.linux-foundation.org
++S: Maintained
++F: drivers/char/virtio_console.c
++F: include/linux/virtio_console.h
++F: include/uapi/linux/virtio_console.h
++
++VIRTIO CORE AND NET DRIVERS
++M: "Michael S. Tsirkin" <mst@redhat.com>
++M: Jason Wang <jasowang@redhat.com>
++L: virtualization@lists.linux-foundation.org
++S: Maintained
++F: Documentation/devicetree/bindings/virtio/
++F: drivers/block/virtio_blk.c
++F: drivers/crypto/virtio/
++F: drivers/net/virtio_net.c
++F: drivers/vdpa/
++F: drivers/virtio/
++F: include/linux/vdpa.h
++F: include/linux/virtio*.h
++F: include/uapi/linux/virtio_*.h
++F: tools/virtio/
++
++VIRTIO BALLOON
++M: "Michael S. Tsirkin" <mst@redhat.com>
++M: David Hildenbrand <david@redhat.com>
++L: virtualization@lists.linux-foundation.org
++S: Maintained
++F: drivers/virtio/virtio_balloon.c
++F: include/uapi/linux/virtio_balloon.h
++F: include/linux/balloon_compaction.h
++F: mm/balloon_compaction.c
++
++VIRTIO CRYPTO DRIVER
++M: Gonglei <arei.gonglei@huawei.com>
++L: virtualization@lists.linux-foundation.org
++L: linux-crypto@vger.kernel.org
++S: Maintained
++F: drivers/crypto/virtio/
++F: include/uapi/linux/virtio_crypto.h
++
++VIRTIO DRIVERS FOR S390
++M: Cornelia Huck <cohuck@redhat.com>
++M: Halil Pasic <pasic@linux.ibm.com>
++L: linux-s390@vger.kernel.org
++L: virtualization@lists.linux-foundation.org
++L: kvm@vger.kernel.org
++S: Supported
++F: arch/s390/include/uapi/asm/virtio-ccw.h
++F: drivers/s390/virtio/
++
++VIRTIO FILE SYSTEM
++M: Vivek Goyal <vgoyal@redhat.com>
++M: Stefan Hajnoczi <stefanha@redhat.com>
++M: Miklos Szeredi <miklos@szeredi.hu>
++L: virtualization@lists.linux-foundation.org
++L: linux-fsdevel@vger.kernel.org
++S: Supported
++W: https://virtio-fs.gitlab.io/
++F: Documentation/filesystems/virtiofs.rst
++F: fs/fuse/virtio_fs.c
++F: include/uapi/linux/virtio_fs.h
++
++VIRTIO GPIO DRIVER
++M: Enrico Weigelt, metux IT consult <info@metux.net>
++M: Viresh Kumar <vireshk@kernel.org>
++L: linux-gpio@vger.kernel.org
++L: virtualization@lists.linux-foundation.org
++S: Maintained
++F: drivers/gpio/gpio-virtio.c
++F: include/uapi/linux/virtio_gpio.h
++
++VIRTIO GPU DRIVER
++M: David Airlie <airlied@linux.ie>
++M: Gerd Hoffmann <kraxel@redhat.com>
++L: dri-devel@lists.freedesktop.org
++L: virtualization@lists.linux-foundation.org
++S: Maintained
++T: git git://anongit.freedesktop.org/drm/drm-misc
++F: drivers/gpu/drm/virtio/
++F: include/uapi/linux/virtio_gpu.h
++
++VIRTIO HOST (VHOST)
++M: "Michael S. Tsirkin" <mst@redhat.com>
++M: Jason Wang <jasowang@redhat.com>
++L: kvm@vger.kernel.org
++L: virtualization@lists.linux-foundation.org
++L: netdev@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git
++F: drivers/vhost/
++F: include/linux/vhost_iotlb.h
++F: include/uapi/linux/vhost.h
++
++VIRTIO INPUT DRIVER
++M: Gerd Hoffmann <kraxel@redhat.com>
++S: Maintained
++F: drivers/virtio/virtio_input.c
++F: include/uapi/linux/virtio_input.h
++
++VIRTIO IOMMU DRIVER
++M: Jean-Philippe Brucker <jean-philippe@linaro.org>
++L: virtualization@lists.linux-foundation.org
++S: Maintained
++F: drivers/iommu/virtio-iommu.c
++F: include/uapi/linux/virtio_iommu.h
++
++VIRTIO MEM DRIVER
++M: David Hildenbrand <david@redhat.com>
++L: virtualization@lists.linux-foundation.org
++S: Maintained
++W: https://virtio-mem.gitlab.io/
++F: drivers/virtio/virtio_mem.c
++F: include/uapi/linux/virtio_mem.h
++
++VIRTIO SOUND DRIVER
++M: Anton Yakovlev <anton.yakovlev@opensynergy.com>
++M: "Michael S. Tsirkin" <mst@redhat.com>
++L: virtualization@lists.linux-foundation.org
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Maintained
++F: include/uapi/linux/virtio_snd.h
++F: sound/virtio/*
++
++VIRTIO I2C DRIVER
++M: Jie Deng <jie.deng@intel.com>
++M: Viresh Kumar <viresh.kumar@linaro.org>
++L: linux-i2c@vger.kernel.org
++L: virtualization@lists.linux-foundation.org
++S: Maintained
++F: drivers/i2c/busses/i2c-virtio.c
++F: include/uapi/linux/virtio_i2c.h
++
++VIRTUAL BOX GUEST DEVICE DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++M: Arnd Bergmann <arnd@arndb.de>
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++S: Maintained
++F: drivers/virt/vboxguest/
++F: include/linux/vbox_utils.h
++F: include/uapi/linux/vbox*.h
++
++VIRTUAL BOX SHARED FOLDER VFS DRIVER
++M: Hans de Goede <hdegoede@redhat.com>
++L: linux-fsdevel@vger.kernel.org
++S: Maintained
++F: fs/vboxsf/*
++
++VIRTUAL SERIO DEVICE DRIVER
++M: Stephen Chandler Paul <thatslyude@gmail.com>
++S: Maintained
++F: drivers/input/serio/userio.c
++F: include/uapi/linux/userio.h
++
++VIVID VIRTUAL VIDEO DRIVER
++M: Hans Verkuil <hverkuil@xs4all.nl>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/test-drivers/vivid/*
++
++VIDTV VIRTUAL DIGITAL TV DRIVER
++M: Daniel W. S. Almeida <dwlsalmeida@gmail.com>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/test-drivers/vidtv/*
++
++VLYNQ BUS
++M: Florian Fainelli <f.fainelli@gmail.com>
++L: openwrt-devel@lists.openwrt.org (subscribers-only)
++S: Maintained
++F: drivers/vlynq/vlynq.c
++F: include/linux/vlynq.h
++
++VME SUBSYSTEM
++M: Martyn Welch <martyn@welchs.me.uk>
++M: Manohar Vanga <manohar.vanga@gmail.com>
++M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
++F: Documentation/driver-api/vme.rst
++F: drivers/staging/vme/
++F: drivers/vme/
++F: include/linux/vme*
++
++VM SOCKETS (AF_VSOCK)
++M: Stefano Garzarella <sgarzare@redhat.com>
++L: virtualization@lists.linux-foundation.org
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/vsockmon.c
++F: include/net/af_vsock.h
++F: include/uapi/linux/vm_sockets.h
++F: include/uapi/linux/vm_sockets_diag.h
++F: include/uapi/linux/vsockmon.h
++F: net/vmw_vsock/
++F: tools/testing/vsock/
++
++VMWARE BALLOON DRIVER
++M: Nadav Amit <namit@vmware.com>
++M: "VMware, Inc." <pv-drivers@vmware.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: drivers/misc/vmw_balloon.c
++
++VMWARE HYPERVISOR INTERFACE
++M: Deep Shah <sdeep@vmware.com>
++M: "VMware, Inc." <pv-drivers@vmware.com>
++L: virtualization@lists.linux-foundation.org
++S: Supported
++F: arch/x86/include/asm/vmware.h
++F: arch/x86/kernel/cpu/vmware.c
++
++VMWARE PVRDMA DRIVER
++M: Adit Ranadive <aditr@vmware.com>
++M: VMware PV-Drivers <pv-drivers@vmware.com>
++L: linux-rdma@vger.kernel.org
++S: Maintained
++F: drivers/infiniband/hw/vmw_pvrdma/
++
++VMware PVSCSI driver
++M: Vishal Bhakta <vbhakta@vmware.com>
++M: VMware PV-Drivers <pv-drivers@vmware.com>
++L: linux-scsi@vger.kernel.org
++S: Maintained
++F: drivers/scsi/vmw_pvscsi.c
++F: drivers/scsi/vmw_pvscsi.h
++
++VMWARE VIRTUAL PTP CLOCK DRIVER
++M: Vivek Thampi <vithampi@vmware.com>
++M: "VMware, Inc." <pv-drivers@vmware.com>
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/ptp/ptp_vmw.c
++
++VMWARE VMCI DRIVER
++M: Jorgen Hansen <jhansen@vmware.com>
++M: Vishnu Dasa <vdasa@vmware.com>
++L: linux-kernel@vger.kernel.org
++L: pv-drivers@vmware.com (private)
++S: Maintained
++F: drivers/misc/vmw_vmci/
++
++VMWARE VMMOUSE SUBDRIVER
++M: "VMware Graphics" <linux-graphics-maintainer@vmware.com>
++M: "VMware, Inc." <pv-drivers@vmware.com>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/input/mouse/vmmouse.c
++F: drivers/input/mouse/vmmouse.h
++
++VMWARE VMXNET3 ETHERNET DRIVER
++M: Ronak Doshi <doshir@vmware.com>
++M: pv-drivers@vmware.com
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/vmxnet3/
++
++VOCORE VOCORE2 BOARD
++M: Harvey Hunt <harveyhuntnexus@gmail.com>
++L: linux-mips@vger.kernel.org
++S: Maintained
++F: arch/mips/boot/dts/ralink/vocore2.dts
++
++VOLTAGE AND CURRENT REGULATOR FRAMEWORK
++M: Liam Girdwood <lgirdwood@gmail.com>
++M: Mark Brown <broonie@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Supported
++W: http://www.slimlogic.co.uk/?p=48
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git
++F: Documentation/devicetree/bindings/regulator/
++F: Documentation/power/regulator/
++F: drivers/regulator/
++F: include/dt-bindings/regulator/
++F: include/linux/regulator/
++K: regulator_get_optional
++
++VOLTAGE AND CURRENT REGULATOR IRQ HELPERS
++R: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
++F: drivers/regulator/irq_helpers.c
++
++VRF
++M: David Ahern <dsahern@kernel.org>
++L: netdev@vger.kernel.org
++S: Maintained
++F: Documentation/networking/vrf.rst
++F: drivers/net/vrf.c
++
++VSPRINTF
++M: Petr Mladek <pmladek@suse.com>
++M: Steven Rostedt <rostedt@goodmis.org>
++M: Sergey Senozhatsky <senozhatsky@chromium.org>
++R: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
++R: Rasmus Villemoes <linux@rasmusvillemoes.dk>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk.git
++F: Documentation/core-api/printk-formats.rst
++F: lib/test_printf.c
++F: lib/test_scanf.c
++F: lib/vsprintf.c
++
++VT1211 HARDWARE MONITOR DRIVER
++M: Juerg Haefliger <juergh@gmail.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/vt1211.rst
++F: drivers/hwmon/vt1211.c
++
++VT8231 HARDWARE MONITOR DRIVER
++M: Roger Lucas <vt8231@hiddenengine.co.uk>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: drivers/hwmon/vt8231.c
++
++VUB300 USB to SDIO/SD/MMC bridge chip
++L: linux-mmc@vger.kernel.org
++S: Orphan
++F: drivers/mmc/host/vub300.c
++
++W1 DALLAS'S 1-WIRE BUS
++M: Evgeniy Polyakov <zbr@ioremap.net>
++S: Maintained
++F: Documentation/devicetree/bindings/w1/
++F: Documentation/w1/
++F: drivers/w1/
++F: include/linux/w1.h
++
++W83791D HARDWARE MONITORING DRIVER
++M: Marc Hulsman <m.hulsman@tudelft.nl>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/w83791d.rst
++F: drivers/hwmon/w83791d.c
++
++W83793 HARDWARE MONITORING DRIVER
++M: Rudolf Marek <r.marek@assembler.cz>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: Documentation/hwmon/w83793.rst
++F: drivers/hwmon/w83793.c
++
++W83795 HARDWARE MONITORING DRIVER
++M: Jean Delvare <jdelvare@suse.com>
++L: linux-hwmon@vger.kernel.org
++S: Maintained
++F: drivers/hwmon/w83795.c
++
++W83L51xD SD/MMC CARD INTERFACE DRIVER
++M: Pierre Ossman <pierre@ossman.eu>
++S: Maintained
++F: drivers/mmc/host/wbsd.*
++
++WACOM PROTOCOL 4 SERIAL TABLETS
++M: Julian Squires <julian@cipht.net>
++M: Hans de Goede <hdegoede@redhat.com>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/input/tablet/wacom_serial4.c
++
++WATCHDOG DEVICE DRIVERS
++M: Wim Van Sebroeck <wim@linux-watchdog.org>
++M: Guenter Roeck <linux@roeck-us.net>
++L: linux-watchdog@vger.kernel.org
++S: Maintained
++W: http://www.linux-watchdog.org/
++T: git git://www.linux-watchdog.org/linux-watchdog.git
++F: Documentation/devicetree/bindings/watchdog/
++F: Documentation/watchdog/
++F: drivers/watchdog/
++F: include/linux/watchdog.h
++F: include/uapi/linux/watchdog.h
++
++WHISKEYCOVE PMIC GPIO DRIVER
++M: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: drivers/gpio/gpio-wcove.c
++
++WHWAVE RTC DRIVER
++M: Dianlong Li <long17.cool@163.com>
++L: linux-rtc@vger.kernel.org
++S: Maintained
++F: drivers/rtc/rtc-sd3078.c
++
++WIIMOTE HID DRIVER
++M: David Rheinsberg <david.rheinsberg@gmail.com>
++L: linux-input@vger.kernel.org
++S: Maintained
++F: drivers/hid/hid-wiimote*
++
++WILOCITY WIL6210 WIRELESS DRIVER
++M: Maya Erez <merez@codeaurora.org>
++L: linux-wireless@vger.kernel.org
++L: wil6210@qti.qualcomm.com
++S: Supported
++W: https://wireless.wiki.kernel.org/en/users/Drivers/wil6210
++F: drivers/net/wireless/ath/wil6210/
++
++WINBOND CIR DRIVER
++M: David Härdeman <david@hardeman.nu>
++S: Maintained
++F: drivers/media/rc/winbond-cir.c
++
++WINSYSTEMS EBC-C384 WATCHDOG DRIVER
++M: William Breathitt Gray <vilhelm.gray@gmail.com>
++L: linux-watchdog@vger.kernel.org
++S: Maintained
++F: drivers/watchdog/ebc-c384_wdt.c
++
++WINSYSTEMS WS16C48 GPIO DRIVER
++M: William Breathitt Gray <vilhelm.gray@gmail.com>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: drivers/gpio/gpio-ws16c48.c
++
++WIREGUARD SECURE NETWORK TUNNEL
++M: Jason A. Donenfeld <Jason@zx2c4.com>
++L: wireguard@lists.zx2c4.com
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/wireguard/
++F: tools/testing/selftests/wireguard/
++
++WISTRON LAPTOP BUTTON DRIVER
++M: Miloslav Trmac <mitr@volny.cz>
++S: Maintained
++F: drivers/input/misc/wistron_btns.c
++
++WL3501 WIRELESS PCMCIA CARD DRIVER
++L: linux-wireless@vger.kernel.org
++S: Odd fixes
++F: drivers/net/wireless/wl3501*
++
++WOLFSON MICROELECTRONICS DRIVERS
++L: patches@opensource.cirrus.com
++S: Supported
++W: https://github.com/CirrusLogic/linux-drivers/wiki
++T: git https://github.com/CirrusLogic/linux-drivers.git
++F: Documentation/devicetree/bindings/extcon/wlf,arizona.yaml
++F: Documentation/devicetree/bindings/mfd/wlf,arizona.yaml
++F: Documentation/devicetree/bindings/mfd/wm831x.txt
++F: Documentation/devicetree/bindings/regulator/wlf,arizona.yaml
++F: Documentation/devicetree/bindings/sound/wlf,*.yaml
++F: Documentation/devicetree/bindings/sound/wm*
++F: Documentation/hwmon/wm83??.rst
++F: arch/arm/mach-s3c/mach-crag6410*
++F: drivers/clk/clk-wm83*.c
++F: drivers/gpio/gpio-*wm*.c
++F: drivers/gpio/gpio-arizona.c
++F: drivers/hwmon/wm83??-hwmon.c
++F: drivers/input/misc/wm831x-on.c
++F: drivers/input/touchscreen/wm831x-ts.c
++F: drivers/input/touchscreen/wm97*.c
++F: drivers/leds/leds-wm83*.c
++F: drivers/mfd/arizona*
++F: drivers/mfd/cs47l24*
++F: drivers/mfd/wm*.c
++F: drivers/power/supply/wm83*.c
++F: drivers/regulator/arizona*
++F: drivers/regulator/wm8*.c
++F: drivers/rtc/rtc-wm83*.c
++F: drivers/video/backlight/wm83*_bl.c
++F: drivers/watchdog/wm83*_wdt.c
++F: include/linux/mfd/arizona/
++F: include/linux/mfd/wm831x/
++F: include/linux/mfd/wm8350/
++F: include/linux/mfd/wm8400*
++F: include/linux/regulator/arizona*
++F: include/linux/wm97xx.h
++F: include/sound/wm????.h
++F: sound/soc/codecs/arizona*
++F: sound/soc/codecs/cs47l24*
++F: sound/soc/codecs/wm*
++
++WORKQUEUE
++M: Tejun Heo <tj@kernel.org>
++R: Lai Jiangshan <jiangshanlai@gmail.com>
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git
++F: Documentation/core-api/workqueue.rst
++F: include/linux/workqueue.h
++F: kernel/workqueue.c
++
++WWAN DRIVERS
++M: Loic Poulain <loic.poulain@linaro.org>
++M: Sergey Ryazanov <ryazanov.s.a@gmail.com>
++R: Johannes Berg <johannes@sipsolutions.net>
++L: netdev@vger.kernel.org
++S: Maintained
++F: drivers/net/wwan/
++F: include/linux/wwan.h
++F: include/uapi/linux/wwan.h
++
++X-POWERS AXP288 PMIC DRIVERS
++M: Hans de Goede <hdegoede@redhat.com>
++S: Maintained
++F: drivers/acpi/pmic/intel_pmic_xpower.c
++N: axp288
++
++X-POWERS MULTIFUNCTION PMIC DEVICE DRIVERS
++M: Chen-Yu Tsai <wens@csie.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++N: axp[128]
++
++X.25 STACK
++M: Martin Schiller <ms@dev.tdt.de>
++L: linux-x25@vger.kernel.org
++S: Maintained
++F: Documentation/networking/lapb-module.rst
++F: Documentation/networking/x25*
++F: drivers/net/wan/hdlc_x25.c
++F: drivers/net/wan/lapbether.c
++F: include/*/lapb.h
++F: include/net/x25*
++F: include/uapi/linux/x25.h
++F: net/lapb/
++F: net/x25/
++
++X86 ARCHITECTURE (32-BIT AND 64-BIT)
++M: Thomas Gleixner <tglx@linutronix.de>
++M: Ingo Molnar <mingo@redhat.com>
++M: Borislav Petkov <bp@alien8.de>
++M: Dave Hansen <dave.hansen@linux.intel.com>
++M: x86@kernel.org
++R: "H. Peter Anvin" <hpa@zytor.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/core
++F: Documentation/devicetree/bindings/x86/
++F: Documentation/x86/
++F: arch/x86/
++
++X86 ENTRY CODE
++M: Andy Lutomirski <luto@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/asm
++F: arch/x86/entry/
++
++X86 MCE INFRASTRUCTURE
++M: Tony Luck <tony.luck@intel.com>
++M: Borislav Petkov <bp@alien8.de>
++L: linux-edac@vger.kernel.org
++S: Maintained
++F: arch/x86/kernel/cpu/mce/*
++
++X86 MICROCODE UPDATE SUPPORT
++M: Borislav Petkov <bp@alien8.de>
++S: Maintained
++F: arch/x86/kernel/cpu/microcode/*
++
++X86 MM
++M: Dave Hansen <dave.hansen@linux.intel.com>
++M: Andy Lutomirski <luto@kernel.org>
++M: Peter Zijlstra <peterz@infradead.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/mm
++F: arch/x86/mm/
++
++X86 PLATFORM DRIVERS
++M: Hans de Goede <hdegoede@redhat.com>
++M: Mark Gross <mgross@linux.intel.com>
++L: platform-driver-x86@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git
++F: drivers/platform/olpc/
++F: drivers/platform/x86/
++
++X86 PLATFORM DRIVERS - ARCH
++R: Darren Hart <dvhart@infradead.org>
++R: Andy Shevchenko <andy@infradead.org>
++L: platform-driver-x86@vger.kernel.org
++L: x86@kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/core
++F: arch/x86/platform
++
++X86 PLATFORM UV HPE SUPERDOME FLEX
++M: Steve Wahl <steve.wahl@hpe.com>
++R: Mike Travis <mike.travis@hpe.com>
++R: Dimitri Sivanich <dimitri.sivanich@hpe.com>
++R: Russ Anderson <russ.anderson@hpe.com>
++S: Supported
++F: arch/x86/include/asm/uv/
++F: arch/x86/kernel/apic/x2apic_uv_x.c
++F: arch/x86/platform/uv/
++
++X86 VDSO
++M: Andy Lutomirski <luto@kernel.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/vdso
++F: arch/x86/entry/vdso/
++
++XARRAY
++M: Matthew Wilcox <willy@infradead.org>
++L: linux-fsdevel@vger.kernel.org
++S: Supported
++F: Documentation/core-api/xarray.rst
++F: include/linux/idr.h
++F: include/linux/xarray.h
++F: lib/idr.c
++F: lib/xarray.c
++F: tools/testing/radix-tree
++
++XBOX DVD IR REMOTE
++M: Benjamin Valentin <benpicco@googlemail.com>
++S: Maintained
++F: drivers/media/rc/keymaps/rc-xbox-dvd.c
++F: drivers/media/rc/xbox_remote.c
++
++XC2028/3028 TUNER DRIVER
++M: Mauro Carvalho Chehab <mchehab@kernel.org>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org
++T: git git://linuxtv.org/media_tree.git
++F: drivers/media/tuners/tuner-xc2028.*
++
++XDP (eXpress Data Path)
++M: Alexei Starovoitov <ast@kernel.org>
++M: Daniel Borkmann <daniel@iogearbox.net>
++M: David S. Miller <davem@davemloft.net>
++M: Jakub Kicinski <kuba@kernel.org>
++M: Jesper Dangaard Brouer <hawk@kernel.org>
++M: John Fastabend <john.fastabend@gmail.com>
++L: netdev@vger.kernel.org
++L: bpf@vger.kernel.org
++S: Supported
++F: include/net/xdp.h
++F: include/net/xdp_priv.h
++F: include/trace/events/xdp.h
++F: kernel/bpf/cpumap.c
++F: kernel/bpf/devmap.c
++F: net/core/xdp.c
++F: samples/bpf/xdp*
++F: tools/testing/selftests/bpf/*xdp*
++F: tools/testing/selftests/bpf/*/*xdp*
++F: drivers/net/ethernet/*/*/*/*/*xdp*
++F: drivers/net/ethernet/*/*/*xdp*
++K: (?:\b|_)xdp(?:\b|_)
++
++XDP SOCKETS (AF_XDP)
++M: Björn Töpel <bjorn@kernel.org>
++M: Magnus Karlsson <magnus.karlsson@intel.com>
++R: Jonathan Lemon <jonathan.lemon@gmail.com>
++L: netdev@vger.kernel.org
++L: bpf@vger.kernel.org
++S: Maintained
++F: Documentation/networking/af_xdp.rst
++F: include/net/xdp_sock*
++F: include/net/xsk_buff_pool.h
++F: include/uapi/linux/if_xdp.h
++F: include/uapi/linux/xdp_diag.h
++F: include/net/netns/xdp.h
++F: net/xdp/
++F: samples/bpf/xdpsock*
++F: tools/lib/bpf/xsk*
++
++XEN BLOCK SUBSYSTEM
++M: Roger Pau Monné <roger.pau@citrix.com>
++L: xen-devel@lists.xenproject.org (moderated for non-subscribers)
++S: Supported
++F: drivers/block/xen*
++F: drivers/block/xen-blkback/*
++
++XEN HYPERVISOR ARM
++M: Stefano Stabellini <sstabellini@kernel.org>
++L: xen-devel@lists.xenproject.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm/include/asm/xen/
++F: arch/arm/xen/
++
++XEN HYPERVISOR ARM64
++M: Stefano Stabellini <sstabellini@kernel.org>
++L: xen-devel@lists.xenproject.org (moderated for non-subscribers)
++S: Maintained
++F: arch/arm64/include/asm/xen/
++F: arch/arm64/xen/
++
++XEN HYPERVISOR INTERFACE
++M: Boris Ostrovsky <boris.ostrovsky@oracle.com>
++M: Juergen Gross <jgross@suse.com>
++R: Stefano Stabellini <sstabellini@kernel.org>
++L: xen-devel@lists.xenproject.org (moderated for non-subscribers)
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git
++F: Documentation/ABI/stable/sysfs-hypervisor-xen
++F: Documentation/ABI/testing/sysfs-hypervisor-xen
++F: arch/x86/include/asm/pvclock-abi.h
++F: arch/x86/include/asm/xen/
++F: arch/x86/platform/pvh/
++F: arch/x86/xen/
++F: drivers/*/xen-*front.c
++F: drivers/xen/
++F: include/uapi/xen/
++F: include/xen/
++
++XEN NETWORK BACKEND DRIVER
++M: Wei Liu <wei.liu@kernel.org>
++M: Paul Durrant <paul@xen.org>
++L: xen-devel@lists.xenproject.org (moderated for non-subscribers)
++L: netdev@vger.kernel.org
++S: Supported
++F: drivers/net/xen-netback/*
++
++XEN PCI SUBSYSTEM
++M: Juergen Gross <jgross@suse.com>
++L: xen-devel@lists.xenproject.org (moderated for non-subscribers)
++S: Supported
++F: arch/x86/pci/*xen*
++F: drivers/pci/*xen*
++
++XEN PVSCSI DRIVERS
++M: Juergen Gross <jgross@suse.com>
++L: xen-devel@lists.xenproject.org (moderated for non-subscribers)
++L: linux-scsi@vger.kernel.org
++S: Supported
++F: drivers/scsi/xen-scsifront.c
++F: drivers/xen/xen-scsiback.c
++F: include/xen/interface/io/vscsiif.h
++
++XEN SOUND FRONTEND DRIVER
++M: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
++L: xen-devel@lists.xenproject.org (moderated for non-subscribers)
++L: alsa-devel@alsa-project.org (moderated for non-subscribers)
++S: Supported
++F: sound/xen/*
++
++XEN SWIOTLB SUBSYSTEM
++M: Juergen Gross <jgross@suse.com>
++M: Stefano Stabellini <sstabellini@kernel.org>
++L: xen-devel@lists.xenproject.org (moderated for non-subscribers)
++L: iommu@lists.linux-foundation.org
++S: Supported
++F: arch/x86/xen/*swiotlb*
++F: drivers/xen/*swiotlb*
++
++XFS FILESYSTEM
++C: irc://irc.oftc.net/xfs
++M: Darrick J. Wong <djwong@kernel.org>
++M: linux-xfs@vger.kernel.org
++L: linux-xfs@vger.kernel.org
++S: Supported
++W: http://xfs.org/
++T: git git://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git
++F: Documentation/ABI/testing/sysfs-fs-xfs
++F: Documentation/admin-guide/xfs.rst
++F: Documentation/filesystems/xfs-delayed-logging-design.rst
++F: Documentation/filesystems/xfs-self-describing-metadata.rst
++F: fs/xfs/
++F: include/uapi/linux/dqblk_xfs.h
++F: include/uapi/linux/fsmap.h
++
++XILINX AXI ETHERNET DRIVER
++M: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
++S: Maintained
++F: drivers/net/ethernet/xilinx/xilinx_axienet*
++
++XILINX CAN DRIVER
++M: Appana Durga Kedareswara rao <appana.durga.rao@xilinx.com>
++R: Naga Sureshkumar Relli <naga.sureshkumar.relli@xilinx.com>
++L: linux-can@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/net/can/xilinx_can.txt
++F: drivers/net/can/xilinx_can.c
++
++XILINX GPIO DRIVER
++M: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
++R: Srinivas Neeli <srinivas.neeli@xilinx.com>
++R: Michal Simek <michal.simek@xilinx.com>
++S: Maintained
++F: Documentation/devicetree/bindings/gpio/gpio-xilinx.txt
++F: Documentation/devicetree/bindings/gpio/gpio-zynq.yaml
++F: drivers/gpio/gpio-xilinx.c
++F: drivers/gpio/gpio-zynq.c
++
++XILINX SD-FEC IP CORES
++M: Derek Kiernan <derek.kiernan@xilinx.com>
++M: Dragan Cvetic <dragan.cvetic@xilinx.com>
++S: Maintained
++F: Documentation/devicetree/bindings/misc/xlnx,sd-fec.txt
++F: Documentation/misc-devices/xilinx_sdfec.rst
++F: drivers/misc/Kconfig
++F: drivers/misc/Makefile
++F: drivers/misc/xilinx_sdfec.c
++F: include/uapi/misc/xilinx_sdfec.h
++
++XILINX UARTLITE SERIAL DRIVER
++M: Peter Korsgaard <jacmet@sunsite.dk>
++L: linux-serial@vger.kernel.org
++S: Maintained
++F: drivers/tty/serial/uartlite.c
++
++XILINX VIDEO IP CORES
++M: Hyun Kwon <hyun.kwon@xilinx.com>
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++L: linux-media@vger.kernel.org
++S: Supported
++T: git git://linuxtv.org/media_tree.git
++F: Documentation/devicetree/bindings/media/xilinx/
++F: drivers/media/platform/xilinx/
++F: include/uapi/linux/xilinx-v4l2-controls.h
++
++XILINX ZYNQMP DPDMA DRIVER
++M: Hyun Kwon <hyun.kwon@xilinx.com>
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++L: dmaengine@vger.kernel.org
++S: Supported
++F: Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dpdma.yaml
++F: drivers/dma/xilinx/xilinx_dpdma.c
++F: include/dt-bindings/dma/xlnx-zynqmp-dpdma.h
++
++XILINX ZYNQMP PSGTR PHY DRIVER
++M: Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>
++M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
++L: linux-kernel@vger.kernel.org
++S: Supported
++T: git https://github.com/Xilinx/linux-xlnx.git
++F: Documentation/devicetree/bindings/phy/xlnx,zynqmp-psgtr.yaml
++F: drivers/phy/xilinx/phy-zynqmp.c
++
++XILLYBUS DRIVER
++M: Eli Billauer <eli.billauer@gmail.com>
++L: linux-kernel@vger.kernel.org
++S: Supported
++F: drivers/char/xillybus/
++
++XLP9XX I2C DRIVER
++M: George Cherian <gcherian@marvell.com>
++L: linux-i2c@vger.kernel.org
++S: Supported
++W: http://www.marvell.com
++F: Documentation/devicetree/bindings/i2c/i2c-xlp9xx.txt
++F: drivers/i2c/busses/i2c-xlp9xx.c
++
++XRA1403 GPIO EXPANDER
++M: Nandor Han <nandor.han@ge.com>
++M: Semi Malinen <semi.malinen@ge.com>
++L: linux-gpio@vger.kernel.org
++S: Maintained
++F: Documentation/devicetree/bindings/gpio/gpio-xra1403.txt
++F: drivers/gpio/gpio-xra1403.c
++
++XTENSA XTFPGA PLATFORM SUPPORT
++M: Max Filippov <jcmvbkbc@gmail.com>
++L: linux-xtensa@linux-xtensa.org
++S: Maintained
++F: drivers/spi/spi-xtensa-xtfpga.c
++F: sound/soc/xtensa/xtfpga-i2s.c
++
++YAM DRIVER FOR AX.25
++M: Jean-Paul Roubelat <jpr@f6fbb.org>
++L: linux-hams@vger.kernel.org
++S: Maintained
++F: drivers/net/hamradio/yam*
++F: include/linux/yam.h
++
++YAMA SECURITY MODULE
++M: Kees Cook <keescook@chromium.org>
++S: Supported
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git yama/tip
++F: Documentation/admin-guide/LSM/Yama.rst
++F: security/yama/
++
++YEALINK PHONE DRIVER
++M: Henk Vergonet <Henk.Vergonet@gmail.com>
++L: usbb2k-api-dev@nongnu.org
++S: Maintained
++F: Documentation/input/devices/yealink.rst
++F: drivers/input/misc/yealink.*
++
++Z8530 DRIVER FOR AX.25
++M: Joerg Reuter <jreuter@yaina.de>
++L: linux-hams@vger.kernel.org
++S: Maintained
++W: http://yaina.de/jreuter/
++W: http://www.qsl.net/dl1bke/
++F: Documentation/networking/device_drivers/hamradio/z8530drv.rst
++F: drivers/net/hamradio/*scc.c
++F: drivers/net/hamradio/z8530.h
++
++ZBUD COMPRESSED PAGE ALLOCATOR
++M: Seth Jennings <sjenning@redhat.com>
++M: Dan Streetman <ddstreet@ieee.org>
++L: linux-mm@kvack.org
++S: Maintained
++F: mm/zbud.c
++
++ZD1211RW WIRELESS DRIVER
++M: Ulrich Kunitz <kune@deine-taler.de>
++L: linux-wireless@vger.kernel.org
++L: zd1211-devs@lists.sourceforge.net (subscribers-only)
++S: Maintained
++W: http://zd1211.ath.cx/wiki/DriverRewrite
++F: drivers/net/wireless/zydas/zd1211rw/
++
++ZD1301 MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org/
++W: http://palosaari.fi/linux/
++Q: https://patchwork.linuxtv.org/project/linux-media/list/
++F: drivers/media/usb/dvb-usb-v2/zd1301*
++
++ZD1301_DEMOD MEDIA DRIVER
++M: Antti Palosaari <crope@iki.fi>
++L: linux-media@vger.kernel.org
++S: Maintained
++W: https://linuxtv.org/
++W: http://palosaari.fi/linux/
++Q: https://patchwork.linuxtv.org/project/linux-media/list/
++F: drivers/media/dvb-frontends/zd1301_demod*
++
++ZHAOXIN PROCESSOR SUPPORT
++M: Tony W Wang-oc <TonyWWang-oc@zhaoxin.com>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: arch/x86/kernel/cpu/zhaoxin.c
++
++ZONEFS FILESYSTEM
++M: Damien Le Moal <damien.lemoal@wdc.com>
++M: Naohiro Aota <naohiro.aota@wdc.com>
++R: Johannes Thumshirn <jth@kernel.org>
++L: linux-fsdevel@vger.kernel.org
++S: Maintained
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs.git
++F: Documentation/filesystems/zonefs.rst
++F: fs/zonefs/
++
++ZPOOL COMPRESSED PAGE STORAGE API
++M: Dan Streetman <ddstreet@ieee.org>
++L: linux-mm@kvack.org
++S: Maintained
++F: include/linux/zpool.h
++F: mm/zpool.c
++
++ZR36067 VIDEO FOR LINUX DRIVER
++M: Corentin Labbe <clabbe@baylibre.com>
++L: mjpeg-users@lists.sourceforge.net
++L: linux-media@vger.kernel.org
++S: Maintained
++W: http://mjpeg.sourceforge.net/driver-zoran/
++Q: https://patchwork.linuxtv.org/project/linux-media/list/
++F: Documentation/driver-api/media/drivers/zoran.rst
++F: drivers/staging/media/zoran/
++
++ZRAM COMPRESSED RAM BLOCK DEVICE DRVIER
++M: Minchan Kim <minchan@kernel.org>
++M: Nitin Gupta <ngupta@vflare.org>
++R: Sergey Senozhatsky <senozhatsky@chromium.org>
++L: linux-kernel@vger.kernel.org
++S: Maintained
++F: Documentation/admin-guide/blockdev/zram.rst
++F: drivers/block/zram/
++
++ZS DECSTATION Z85C30 SERIAL DRIVER
++M: "Maciej W. Rozycki" <macro@orcam.me.uk>
++S: Maintained
++F: drivers/tty/serial/zs.*
++
++ZSMALLOC COMPRESSED SLAB MEMORY ALLOCATOR
++M: Minchan Kim <minchan@kernel.org>
++M: Nitin Gupta <ngupta@vflare.org>
++R: Sergey Senozhatsky <senozhatsky@chromium.org>
++L: linux-mm@kvack.org
++S: Maintained
++F: Documentation/vm/zsmalloc.rst
++F: include/linux/zsmalloc.h
++F: mm/zsmalloc.c
++
++ZSWAP COMPRESSED SWAP CACHING
++M: Seth Jennings <sjenning@redhat.com>
++M: Dan Streetman <ddstreet@ieee.org>
++M: Vitaly Wool <vitaly.wool@konsulko.com>
++L: linux-mm@kvack.org
++S: Maintained
++F: mm/zswap.c
++
++THE REST
++M: Linus Torvalds <torvalds@linux-foundation.org>
++L: linux-kernel@vger.kernel.org
++S: Buried alive in reporters
++Q: http://patchwork.kernel.org/project/LKML/list/
++T: git git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
++F: *
++F: */
+diff -urN linux-5.15/crypto/drbg.c linux-5.15-lrng/crypto/drbg.c
+--- linux-5.15/crypto/drbg.c 2021-11-01 07:53:10.000000000 +1100
++++ linux-5.15-lrng/crypto/drbg.c 2021-11-29 12:37:31.183279025 +1100
+@@ -114,7 +114,7 @@
+ * the SHA256 / AES 256 over other ciphers. Thus, the favored
+ * DRBGs are the latest entries in this array.
+ */
+-static const struct drbg_core drbg_cores[] = {
++const struct drbg_core drbg_cores[] = {
+ #ifdef CONFIG_CRYPTO_DRBG_CTR
+ {
+ .flags = DRBG_CTR | DRBG_STRENGTH128,
+@@ -191,6 +191,7 @@
+ },
+ #endif /* CONFIG_CRYPTO_DRBG_HMAC */
+ };
++EXPORT_SYMBOL(drbg_cores);
+
+ static int drbg_uninstantiate(struct drbg_state *drbg);
+
+@@ -206,7 +207,7 @@
+ * Return: normalized strength in *bytes* value or 32 as default
+ * to counter programming errors
+ */
+-static inline unsigned short drbg_sec_strength(drbg_flag_t flags)
++unsigned short drbg_sec_strength(drbg_flag_t flags)
+ {
+ switch (flags & DRBG_STRENGTH_MASK) {
+ case DRBG_STRENGTH128:
+@@ -219,6 +220,7 @@
+ return 32;
+ }
+ }
++EXPORT_SYMBOL(drbg_sec_strength);
+
+ /*
+ * FIPS 140-2 continuous self test for the noise source
+@@ -1215,7 +1217,7 @@
+ }
+
+ /* Free all substructures in a DRBG state without the DRBG state structure */
+-static inline void drbg_dealloc_state(struct drbg_state *drbg)
++void drbg_dealloc_state(struct drbg_state *drbg)
+ {
+ if (!drbg)
+ return;
+@@ -1236,12 +1238,13 @@
+ drbg->fips_primed = false;
+ }
+ }
++EXPORT_SYMBOL(drbg_dealloc_state);
+
+ /*
+ * Allocate all sub-structures for a DRBG state.
+ * The DRBG state structure must already be allocated.
+ */
+-static inline int drbg_alloc_state(struct drbg_state *drbg)
++int drbg_alloc_state(struct drbg_state *drbg)
+ {
+ int ret = -ENOMEM;
+ unsigned int sb_size = 0;
+@@ -1322,6 +1325,7 @@
+ drbg_dealloc_state(drbg);
+ return ret;
+ }
++EXPORT_SYMBOL(drbg_alloc_state);
+
+ /*************************************************************************
+ * DRBG interface functions
+@@ -1891,8 +1895,7 @@
+ *
+ * return: flags
+ */
+-static inline void drbg_convert_tfm_core(const char *cra_driver_name,
+- int *coreref, bool *pr)
++void drbg_convert_tfm_core(const char *cra_driver_name, int *coreref, bool *pr)
+ {
+ int i = 0;
+ size_t start = 0;
+@@ -1919,6 +1922,7 @@
+ }
+ }
+ }
++EXPORT_SYMBOL(drbg_convert_tfm_core);
+
+ static int drbg_kcapi_init(struct crypto_tfm *tfm)
+ {
+diff -urN linux-5.15/crypto/jitterentropy-kcapi.c linux-5.15-lrng/crypto/jitterentropy-kcapi.c
+--- linux-5.15/crypto/jitterentropy-kcapi.c 2021-11-01 07:53:10.000000000 +1100
++++ linux-5.15-lrng/crypto/jitterentropy-kcapi.c 2021-11-29 12:37:52.903278942 +1100
+@@ -43,8 +43,7 @@
+ #include <linux/fips.h>
+ #include <linux/time.h>
+ #include <crypto/internal/rng.h>
+-
+-#include "jitterentropy.h"
++#include <crypto/internal/jitterentropy.h>
+
+ /***************************************************************************
+ * Helper function
+diff -urN linux-5.15/crypto/jitterentropy.c linux-5.15-lrng/crypto/jitterentropy.c
+--- linux-5.15/crypto/jitterentropy.c 2021-11-01 07:53:10.000000000 +1100
++++ linux-5.15-lrng/crypto/jitterentropy.c 2021-11-29 12:37:52.903278942 +1100
+@@ -117,7 +117,7 @@
+ #define JENT_EHEALTH 9 /* Health test failed during initialization */
+ #define JENT_ERCT 10 /* RCT failed during initialization */
+
+-#include "jitterentropy.h"
++#include <crypto/internal/jitterentropy.h>
+
+ /***************************************************************************
+ * Adaptive Proportion Test
+diff -urN linux-5.15/crypto/jitterentropy.h linux-5.15-lrng/crypto/jitterentropy.h
+--- linux-5.15/crypto/jitterentropy.h 2021-11-01 07:53:10.000000000 +1100
++++ linux-5.15-lrng/crypto/jitterentropy.h 1970-01-01 10:00:00.000000000 +1000
+@@ -1,17 +0,0 @@
+-// SPDX-License-Identifier: GPL-2.0-or-later
+-
+-extern void *jent_zalloc(unsigned int len);
+-extern void jent_zfree(void *ptr);
+-extern int jent_fips_enabled(void);
+-extern void jent_panic(char *s);
+-extern void jent_memcpy(void *dest, const void *src, unsigned int n);
+-extern void jent_get_nstime(__u64 *out);
+-
+-struct rand_data;
+-extern int jent_entropy_init(void);
+-extern int jent_read_entropy(struct rand_data *ec, unsigned char *data,
+- unsigned int len);
+-
+-extern struct rand_data *jent_entropy_collector_alloc(unsigned int osr,
+- unsigned int flags);
+-extern void jent_entropy_collector_free(struct rand_data *entropy_collector);
+diff -urN linux-5.15/drivers/char/Kconfig linux-5.15-lrng/drivers/char/Kconfig
+--- linux-5.15/drivers/char/Kconfig 2021-11-01 07:53:10.000000000 +1100
++++ linux-5.15-lrng/drivers/char/Kconfig 2021-11-29 12:36:52.113279174 +1100
+@@ -451,4 +451,6 @@
+ pool. Otherwise, say N here so it will be regarded as device input that
+ only mixes the entropy pool.
+
++source "drivers/char/lrng/Kconfig"
++
+ endmenu
+diff -urN linux-5.15/drivers/char/Makefile linux-5.15-lrng/drivers/char/Makefile
+--- linux-5.15/drivers/char/Makefile 2021-11-01 07:53:10.000000000 +1100
++++ linux-5.15-lrng/drivers/char/Makefile 2021-11-29 12:36:52.113279174 +1100
+@@ -3,7 +3,14 @@
+ # Makefile for the kernel character device drivers.
+ #
+
+-obj-y += mem.o random.o
++obj-y += mem.o
++
++ifeq ($(CONFIG_LRNG),y)
++ obj-y += lrng/
++else
++ obj-y += random.o
++endif
++
+ obj-$(CONFIG_TTY_PRINTK) += ttyprintk.o
+ obj-y += misc.o
+ obj-$(CONFIG_ATARI_DSP56K) += dsp56k.o
+diff -urN linux-5.15/drivers/char/lrng/Kconfig linux-5.15-lrng/drivers/char/lrng/Kconfig
+--- linux-5.15/drivers/char/lrng/Kconfig 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/Kconfig 2021-11-29 12:38:26.593278813 +1100
+@@ -0,0 +1,589 @@
++# SPDX-License-Identifier: GPL-2.0
++#
++# Linux Random Number Generator configuration
++#
++
++menuconfig LRNG
++ bool "Linux Random Number Generator"
++ select CRYPTO_LIB_SHA256 if CRYPTO
++ help
++ The Linux Random Number Generator (LRNG) is the replacement
++ of the existing /dev/random provided with drivers/char/random.c.
++ It generates entropy from different noise sources and
++ delivers significant entropy during boot.
++
++if LRNG
++
++menu "Specific DRNG seeding strategies"
++
++config LRNG_OVERSAMPLE_ENTROPY_SOURCES
++ bool "Oversample entropy sources"
++ default n
++ help
++ When enabling this option, the entropy sources are
++ over-sampled with the following approach: First, the
++ the entropy sources are requested to provide 64 bits more
++ entropy than the size of the entropy buffer. For example,
++ if the entropy buffer is 256 bits, 320 bits of entropy
++ is requested to fill that buffer.
++
++ Second, the seed operation of the deterministic RNG
++ requests 128 bits more data from each entropy source than
++ the security strength of the DRNG during initialization.
++ A prerequisite for this operation is that the digest size
++ of the used hash must be at least equally large to generate
++ that buffer. If the prerequisite is not met, this
++ oversampling is not applied.
++
++ This strategy is intended to offset the asymptotic entropy
++ increase to reach full entropy in a buffer.
++
++ The strategy is consistent with the requirements in
++ NIST SP800-90C and is only enforced with fips=1.
++
++ If unsure, say N.
++
++config LRNG_OVERSAMPLE_ES_BITS
++ int
++ default 0 if !LRNG_OVERSAMPLE_ENTROPY_SOURCES
++ default 64 if LRNG_OVERSAMPLE_ENTROPY_SOURCES
++
++config LRNG_SEED_BUFFER_INIT_ADD_BITS
++ int
++ default 0 if !LRNG_OVERSAMPLE_ENTROPY_SOURCES
++ default 128 if LRNG_OVERSAMPLE_ENTROPY_SOURCES
++
++endmenu # "Specific DRNG seeding strategies"
++
++menu "Entropy Source Configuration"
++
++comment "Interrupt Entropy Source"
++
++config LRNG_IRQ
++ bool "Enable Interrupt Entropy Source as LRNG Seed Source"
++ default y
++ help
++ The LRNG models an entropy source based on the timing of the
++ occurrence of interrupts. Enable this option to enable this
++ IRQ entropy source.
++
++ The IRQ entropy source is triggered every time an interrupt
++ arrives and thus causes the interrupt handler to execute
++ slightly longer. Disabling the IRQ entropy source implies
++ that the performance penalty on the interrupt handler added
++ by the LRNG is eliminated. Yet, this entropy source is
++ considered to be the internal entropy source of the LRNG.
++ Thus, only disable it if you ensured that other entropy
++ sources are available that supply the LRNG with entropy.
++
++ If you disable the IRQ entropy source, you MUST ensure
++ one or more entropy sources collectively have the
++ capability to deliver sufficient entropy with one invocation
++ at a rate compliant to the security strength of the DRNG
++ (usually 256 bits of entropy). In addition, if those
++ entropy sources do not deliver sufficient entropy during
++ first request, the reseed must be triggered from user
++ space or kernel space when sufficient entropy is considered
++ to be present.
++
++ If unsure, say Y.
++
++choice
++ prompt "Continuous entropy compression boot time setting"
++ default LRNG_CONTINUOUS_COMPRESSION_ENABLED
++ depends on LRNG_IRQ
++ help
++ Select the default behavior of the interrupt entropy source
++ continuous compression operation.
++
++ The Linux RNG collects entropy data during each interrupt.
++ For performance reasons, a amount of entropy data defined by
++ the LRNG entropy collection pool size is concatenated into
++ an array. When that array is filled up, a hash is calculated
++ to compress the entropy. That hash is calculated in
++ interrupt context.
++
++ In case such hash calculation in interrupt context is deemed
++ too time-consuming, the continuous compression operation
++ can be disabled. If disabled, the collection of entropy will
++ not trigger a hash compression operation in interrupt context.
++ The compression happens only when the DRNG is reseeded which is
++ in process context. This implies that old entropy data
++ collected after the last DRNG-reseed is overwritten with newer
++ entropy data once the collection pool is full instead of
++ retaining its entropy with the compression operation.
++
++ config LRNG_CONTINUOUS_COMPRESSION_ENABLED
++ bool "Enable continuous compression (default)"
++
++ config LRNG_CONTINUOUS_COMPRESSION_DISABLED
++ bool "Disable continuous compression"
++endchoice
++
++config LRNG_ENABLE_CONTINUOUS_COMPRESSION
++ bool
++ default y if LRNG_CONTINUOUS_COMPRESSION_ENABLED
++ default n if LRNG_CONTINUOUS_COMPRESSION_DISABLED
++
++config LRNG_SWITCHABLE_CONTINUOUS_COMPRESSION
++ bool "Runtime-switchable continuous entropy compression"
++ depends on LRNG_IRQ
++ help
++ Per default, the interrupt entropy source continuous
++ compression operation behavior is hard-wired into the kernel.
++ Enable this option to allow it to be configurable at boot time.
++
++ To modify the default behavior of the continuous
++ compression operation, use the kernel command line option
++ of lrng_sw_noise.lrng_pcpu_continuous_compression.
++
++ If unsure, say N.
++
++choice
++ prompt "LRNG Entropy Collection Pool Size"
++ default LRNG_COLLECTION_SIZE_1024
++ depends on LRNG_IRQ
++ help
++ Select the size of the LRNG entropy collection pool
++ storing data for the interrupt entropy source without
++ performing a compression operation. The larger the
++ collection size is, the faster the average interrupt
++ handling will be. The collection size represents the
++ number of bytes of the per-CPU memory used to batch
++ up entropy event data.
++
++ The default value is good for regular operations. Choose
++ larger sizes for servers that have no memory limitations.
++ If runtime memory is precious, choose a smaller size.
++
++ The collection size is unrelated to the entropy rate
++ or the amount of entropy the LRNG can process.
++
++ config LRNG_COLLECTION_SIZE_32
++ depends on LRNG_CONTINUOUS_COMPRESSION_ENABLED
++ depends on !LRNG_SWITCHABLE_CONTINUOUS_COMPRESSION
++ depends on !LRNG_OVERSAMPLE_ENTROPY_SOURCES
++ bool "32 interrupt events"
++
++ config LRNG_COLLECTION_SIZE_256
++ depends on !LRNG_OVERSAMPLE_ENTROPY_SOURCES
++ bool "256 interrupt events"
++
++ config LRNG_COLLECTION_SIZE_512
++ bool "512 interrupt events"
++
++ config LRNG_COLLECTION_SIZE_1024
++ bool "1024 interrupt events (default)"
++
++ config LRNG_COLLECTION_SIZE_2048
++ bool "2048 interrupt events"
++
++ config LRNG_COLLECTION_SIZE_4096
++ bool "4096 interrupt events"
++
++ config LRNG_COLLECTION_SIZE_8192
++ bool "8192 interrupt events"
++
++endchoice
++
++config LRNG_COLLECTION_SIZE
++ int
++ default 32 if LRNG_COLLECTION_SIZE_32
++ default 256 if LRNG_COLLECTION_SIZE_256
++ default 512 if LRNG_COLLECTION_SIZE_512
++ default 1024 if LRNG_COLLECTION_SIZE_1024
++ default 2048 if LRNG_COLLECTION_SIZE_2048
++ default 4096 if LRNG_COLLECTION_SIZE_4096
++ default 8192 if LRNG_COLLECTION_SIZE_8192
++
++config LRNG_HEALTH_TESTS
++ bool "Enable interrupt entropy source online health tests"
++ depends on LRNG_IRQ
++ help
++ The online health tests applied to the interrupt entropy
++ source validate the noise source at runtime for fatal
++ errors. These tests include SP800-90B compliant tests
++ which are invoked if the system is booted with fips=1.
++ In case of fatal errors during active SP800-90B tests,
++ the issue is logged and the noise data is discarded.
++ These tests are required for full compliance of the
++ interrupt entropy source with SP800-90B.
++
++ If unsure, say Y.
++
++config LRNG_RCT_BROKEN
++ bool "SP800-90B RCT with dangerous low cutoff value"
++ depends on LRNG_HEALTH_TESTS
++ depends on BROKEN
++ default n
++ help
++ This option enables a dangerously low SP800-90B repetitive
++ count test (RCT) cutoff value which makes it very likely
++ that the RCT is triggered to raise a self test failure.
++
++ This option is ONLY intended for developers wanting to
++ test the effectiveness of the SP800-90B RCT health test.
++
++ If unsure, say N.
++
++config LRNG_APT_BROKEN
++ bool "SP800-90B APT with dangerous low cutoff value"
++ depends on LRNG_HEALTH_TESTS
++ depends on BROKEN
++ default n
++ help
++ This option enables a dangerously low SP800-90B adaptive
++ proportion test (APT) cutoff value which makes it very
++ likely that the APT is triggered to raise a self test
++ failure.
++
++ This option is ONLY intended for developers wanting to
++ test the effectiveness of the SP800-90B APT health test.
++
++ If unsure, say N.
++
++# Default taken from SP800-90B sec 4.4.1 - significance level 2^-30
++config LRNG_RCT_CUTOFF
++ int
++ default 31 if !LRNG_RCT_BROKEN
++ default 1 if LRNG_RCT_BROKEN
++
++# Default taken from SP800-90B sec 4.4.2 - significance level 2^-30
++config LRNG_APT_CUTOFF
++ int
++ default 325 if !LRNG_APT_BROKEN
++ default 32 if LRNG_APT_BROKEN
++
++config LRNG_IRQ_ENTROPY_RATE
++ int "Interrupt Entropy Source Entropy Rate"
++ depends on LRNG_IRQ
++ range 256 4294967295
++ default 256
++ help
++ The LRNG will collect the configured number of interrupts to
++ obtain 256 bits of entropy. This value can be set to any between
++ 256 and 4294967295. The LRNG guarantees that this value is not
++ lower than 256. This lower limit implies that one interrupt event
++ is credited with one bit of entropy. This value is subject to the
++ increase by the oversampling factor, if no high-resolution timer
++ is found.
++
++ In order to effectively disable the interrupt entropy source,
++ the option has to be set to 4294967295. In this case, the
++ interrupt entropy source will still deliver data but without
++ being credited with entropy.
++
++comment "Jitter RNG Entropy Source"
++
++config LRNG_JENT
++ bool "Enable Jitter RNG as LRNG Seed Source"
++ depends on CRYPTO
++ select CRYPTO_JITTERENTROPY
++ help
++ The Linux RNG may use the Jitter RNG as noise source. Enabling
++ this option enables the use of the Jitter RNG. Its default
++ entropy level is 16 bits of entropy per 256 data bits delivered
++ by the Jitter RNG. This entropy level can be changed at boot
++ time or at runtime with the lrng_base.jitterrng configuration
++ variable.
++
++config LRNG_JENT_ENTROPY_RATE
++ int "Jitter RNG Entropy Source Entropy Rate"
++ depends on LRNG_JENT
++ range 0 256
++ default 16
++ help
++ The option defines the amount of entropy the LRNG applies to 256
++ bits of data obtained from the Jitter RNG entropy source. The
++ LRNG enforces the limit that this value must be in the range
++ between 0 and 256.
++
++ When configuring this value to 0, the Jitter RNG entropy source
++ will provide 256 bits of data without being credited to contain
++ entropy.
++
++comment "CPU Entropy Source"
++
++config LRNG_CPU
++ bool "Enable CPU Entropy Source as LRNG Seed Source"
++ default y
++ help
++ Current CPUs commonly contain entropy sources which can be
++ used to seed the LRNG. For example, the Intel RDSEED
++ instruction, or the POWER DARN instruction will be sourced
++ to seed the LRNG if this option is enabled.
++
++ Note, if this option is enabled and the underlying CPU
++ does not offer such entropy source, the LRNG will automatically
++ detect this and ignore the hardware.
++
++config LRNG_CPU_FULL_ENT_MULTIPLIER
++ int
++ default 1 if !LRNG_TEST_CPU_ES_COMPRESSION
++ default 123 if LRNG_TEST_CPU_ES_COMPRESSION
++
++config LRNG_CPU_ENTROPY_RATE
++ int "CPU Entropy Source Entropy Rate"
++ depends on LRNG_CPU
++ range 0 256
++ default 8
++ help
++ The option defines the amount of entropy the LRNG applies to 256
++ bits of data obtained from the CPU entropy source. The LRNG
++ enforces the limit that this value must be in the range between
++ 0 and 256.
++
++ When configuring this value to 0, the CPU entropy source will
++ provide 256 bits of data without being credited to contain
++ entropy.
++
++ Note, this option is overwritten when the option
++ CONFIG_RANDOM_TRUST_CPU is set.
++
++endmenu # "Entropy Source Configuration"
++
++menuconfig LRNG_DRNG_SWITCH
++ bool "Support DRNG runtime switching"
++ help
++ The Linux RNG per default uses a ChaCha20 DRNG that is
++ accessible via the external interfaces. With this configuration
++ option other DRNGs can be selected and loaded at runtime.
++
++if LRNG_DRNG_SWITCH
++
++config LRNG_KCAPI_HASH
++ bool
++ select CRYPTO_HASH
++
++config LRNG_DRBG
++ tristate "SP800-90A support for the LRNG"
++ depends on CRYPTO
++ select CRYPTO_DRBG_MENU
++ select CRYPTO_SHA512
++ select LRNG_KCAPI_HASH
++ help
++ Enable the SP800-90A DRBG support for the LRNG. Once the
++ module is loaded, output from /dev/random, /dev/urandom,
++ getrandom(2), or get_random_bytes_full is provided by a DRBG.
++
++config LRNG_KCAPI
++ tristate "Kernel Crypto API support for the LRNG"
++ depends on CRYPTO
++ depends on !LRNG_DRBG
++ select CRYPTO_RNG
++ select LRNG_KCAPI_HASH
++ help
++ Enable the support for generic pseudo-random number
++ generators offered by the kernel crypto API with the
++ LRNG. Once the module is loaded, output from /dev/random,
++ /dev/urandom, getrandom(2), or get_random_bytes is
++ provided by the selected kernel crypto API RNG.
++endif # LRNG_DRNG_SWITCH
++
++menuconfig LRNG_TESTING_MENU
++ bool "LRNG testing interfaces"
++ depends on DEBUG_FS
++ help
++ Enable one or more of the following test interfaces.
++
++ If unsure, say N.
++
++if LRNG_TESTING_MENU
++
++config LRNG_RAW_HIRES_ENTROPY
++ bool "Enable entropy test interface to hires timer noise source"
++ default y
++ help
++ The test interface allows a privileged process to capture
++ the raw unconditioned high resolution time stamp noise that
++ is collected by the LRNG for statistical analysis. Extracted
++ noise data is not used to seed the LRNG.
++
++ The raw noise data can be obtained using the lrng_raw_hires
++ debugfs file. Using the option lrng_testing.boot_raw_hires_test=1
++ the raw noise of the first 1000 entropy events since boot
++ can be sampled.
++
++config LRNG_RAW_JIFFIES_ENTROPY
++ bool "Enable entropy test interface to Jiffies noise source"
++ help
++ The test interface allows a privileged process to capture
++ the raw unconditioned Jiffies that is collected by
++ the LRNG for statistical analysis. This data is used for
++ seeding the LRNG if a high-resolution time stamp is not
++ available. If a high-resolution time stamp is detected,
++ the Jiffies value is not collected by the LRNG and no
++ data is provided via the test interface. Extracted noise
++ data is not used to seed the random number generator.
++
++ The raw noise data can be obtained using the lrng_raw_jiffies
++ debugfs file. Using the option lrng_testing.boot_raw_jiffies_test=1
++ the raw noise of the first 1000 entropy events since boot
++ can be sampled.
++
++config LRNG_RAW_IRQ_ENTROPY
++ bool "Enable entropy test interface to IRQ number noise source"
++ help
++ The test interface allows a privileged process to capture
++ the raw unconditioned interrupt number that is collected by
++ the LRNG for statistical analysis. This data is used for
++ seeding the random32 PRNG external to the LRNG if a
++ high-resolution time stamp is available or it will be used to
++ seed the LRNG otherwise. Extracted noise data is not used to
++ seed the random number generator.
++
++ The raw noise data can be obtained using the lrng_raw_irq
++ debugfs file. Using the option lrng_testing.boot_raw_irq_test=1
++ the raw noise of the first 1000 entropy events since boot
++ can be sampled.
++
++config LRNG_RAW_IRQFLAGS_ENTROPY
++ bool "Enable entropy test interface to IRQ flags noise source"
++ help
++ The test interface allows a privileged process to capture
++ the raw unconditioned interrupt flags that is collected by
++ the LRNG for statistical analysis. This data is used for
++ seeding the random32 PRNG external to the LRNG if a
++ high-resolution time stamp is available or it will be used to
++ seed the LRNG otherwise. Extracted noise data is not used to
++ seed the random number generator.
++
++ The raw noise data can be obtained using the lrng_raw_irqflags
++ debugfs file. Using the option lrng_testing.boot_raw_irqflags_test=1
++ the raw noise of the first 1000 entropy events since boot
++ can be sampled.
++
++config LRNG_RAW_RETIP_ENTROPY
++ bool "Enable entropy test interface to RETIP value noise source"
++ help
++ The test interface allows a privileged process to capture
++ the raw unconditioned return instruction pointer value
++ that is collected by the LRNG for statistical analysis.
++ This data is used for seeding the random32 PRNG external
++ to the LRNG if a high-resolution time stamp is available or
++ it will be used to seed the LRNG otherwise. Extracted noise
++ data is not used to seed the random number generator.
++
++ The raw noise data can be obtained using the lrng_raw_retip
++ debugfs file. Using the option lrng_testing.boot_raw_retip_test=1
++ the raw noise of the first 1000 entropy events since boot
++ can be sampled.
++
++config LRNG_RAW_REGS_ENTROPY
++ bool "Enable entropy test interface to IRQ register value noise source"
++ help
++ The test interface allows a privileged process to capture
++ the raw unconditioned interrupt register value that is
++ collected by the LRNG for statistical analysis. Extracted noise
++ data is not used to seed the random number generator.
++
++ The raw noise data can be obtained using the lrng_raw_regs
++ debugfs file. Using the option lrng_testing.boot_raw_regs_test=1
++ the raw noise of the first 1000 entropy events since boot
++ can be sampled.
++
++config LRNG_RAW_ARRAY
++ bool "Enable test interface to LRNG raw entropy storage array"
++ help
++ The test interface allows a privileged process to capture
++ the raw noise data that is collected by the LRNG
++ in the per-CPU array for statistical analysis. The purpose
++ of this interface is to verify that the array handling code
++ truly only concatenates data and provides the same entropy
++ rate as the raw unconditioned noise source when assessing
++ the collected data byte-wise.
++
++ The data can be obtained using the lrng_raw_array debugfs
++ file. Using the option lrng_testing.boot_raw_array=1
++ the raw noise of the first 1000 entropy events since boot
++ can be sampled.
++
++config LRNG_IRQ_PERF
++ bool "Enable LRNG interrupt performance monitor"
++ help
++ With this option, the performance monitor of the LRNG
++ interrupt handling code is enabled. The file provides
++ the execution time of the interrupt handler in
++ cycles.
++
++ The interrupt performance data can be obtained using
++ the lrng_irq_perf debugfs file. Using the option
++ lrng_testing.boot_irq_perf=1 the performance data of
++ the first 1000 entropy events since boot can be sampled.
++
++config LRNG_ACVT_HASH
++ bool "Enable LRNG ACVT Hash interface"
++ help
++ With this option, the LRNG built-in hash function used for
++ auxiliary pool management and prior to switching the
++ cryptographic backends is made available for ACVT. The
++ interface allows writing of the data to be hashed
++ into the interface. The read operation triggers the hash
++ operation to generate message digest.
++
++ The ACVT interface is available with the lrng_acvt_hash
++ debugfs file.
++
++config LRNG_RUNTIME_ES_CONFIG
++ bool "Enable runtime configuration of entropy sources"
++ help
++ When enabling this option, the LRNG provides the mechanism
++ allowing to alter the entropy rate of each entropy source
++ during boot time and runtime.
++
++ The following interfaces are available:
++ lrng_archrandom.archrandom for the CPU entropy source,
++ lrng_jent.jitterrng for the Jitter RNG entropy source, and
++ lrng_sw_noise.irq_entropy for the interrupt entropy source.
++
++config LRNG_RUNTIME_MAX_WO_RESEED_CONFIG
++ bool "Enable runtime configuration of max reseed threshold"
++ help
++ When enabling this option, the LRNG provides an interface
++ allowing the setting of the maximum number of DRNG generate
++ operations without a reseed that has full entropy. The
++ interface is lrng_drng.max_wo_reseed.
++
++config LRNG_TEST_CPU_ES_COMPRESSION
++ bool "Force CPU ES compression operation"
++ help
++ When enabling this option, the CPU ES compression operation
++ is forced by setting an arbitrary value > 1 for the data
++ multiplier even when the CPU ES would deliver full entropy.
++ This allows testing of the compression operation. It
++ therefore forces to pull more data from the CPU ES
++ than what may be required.
++
++config LRNG_TESTING
++ bool
++ default y if (LRNG_RAW_HIRES_ENTROPY || LRNG_RAW_JIFFIES_ENTROPY ||LRNG_RAW_IRQ_ENTROPY || LRNG_RAW_IRQFLAGS_ENTROPY || LRNG_RAW_RETIP_ENTROPY || LRNG_RAW_REGS_ENTROPY || LRNG_RAW_ARRAY || LRNG_IRQ_PERF || LRNG_ACVT_HASH)
++
++endif #LRNG_TESTING_MENU
++
++config LRNG_SELFTEST
++ bool "Enable power-on and on-demand self-tests"
++ help
++ The power-on self-tests are executed during boot time
++ covering the ChaCha20 DRNG, the hash operation used for
++ processing the entropy pools and the auxiliary pool, and
++ the time stamp management of the LRNG.
++
++ The on-demand self-tests are triggered by writing any
++ value into the SysFS file selftest_status. At the same
++ time, when reading this file, the test status is
++ returned. A zero indicates that all tests were executed
++ successfully.
++
++ If unsure, say Y.
++
++if LRNG_SELFTEST
++
++config LRNG_SELFTEST_PANIC
++ bool "Panic the kernel upon self-test failure"
++ help
++ If the option is enabled, the kernel is terminated if an
++ LRNG power-on self-test failure is detected.
++
++endif # LRNG_SELFTEST
++
++endif # LRNG
+diff -urN linux-5.15/drivers/char/lrng/Makefile linux-5.15-lrng/drivers/char/lrng/Makefile
+--- linux-5.15/drivers/char/lrng/Makefile 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/Makefile 2021-11-29 12:38:26.593278813 +1100
+@@ -0,0 +1,21 @@
++# SPDX-License-Identifier: GPL-2.0
++#
++# Makefile for the Linux Random Number Generator.
++#
++
++obj-y += lrng_es_mgr.o lrng_aux.o \
++ lrng_drng.o lrng_chacha20.o \
++ lrng_interfaces.o lrng_es_aux.o
++
++obj-$(CONFIG_LRNG_IRQ) += lrng_es_irq.o
++obj-$(CONFIG_SYSCTL) += lrng_proc.o
++obj-$(CONFIG_NUMA) += lrng_numa.o
++obj-$(CONFIG_LRNG_CPU) += lrng_es_archrandom.o
++obj-$(CONFIG_LRNG_DRNG_SWITCH) += lrng_switch.o
++obj-$(CONFIG_LRNG_KCAPI_HASH) += lrng_kcapi_hash.o
++obj-$(CONFIG_LRNG_DRBG) += lrng_drbg.o
++obj-$(CONFIG_LRNG_KCAPI) += lrng_kcapi.o
++obj-$(CONFIG_LRNG_JENT) += lrng_es_jent.o
++obj-$(CONFIG_LRNG_HEALTH_TESTS) += lrng_health.o
++obj-$(CONFIG_LRNG_TESTING) += lrng_testing.o
++obj-$(CONFIG_LRNG_SELFTEST) += lrng_selftest.o
+diff -urN linux-5.15/drivers/char/lrng/lrng_aux.c linux-5.15-lrng/drivers/char/lrng/lrng_aux.c
+--- linux-5.15/drivers/char/lrng/lrng_aux.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_aux.c 2021-11-29 12:36:52.113279174 +1100
+@@ -0,0 +1,136 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * LRNG auxiliary interfaces
++ *
++ * Copyright (C) 2019 - 2021 Stephan Mueller <smueller@chronox.de>
++ * Copyright (C) 2017 Jason A. Donenfeld <Jason@zx2c4.com>. All
++ * Rights Reserved.
++ * Copyright (C) 2016 Jason Cooper <jason@lakedaemon.net>
++ */
++
++#include <linux/mm.h>
++#include <linux/random.h>
++
++#include "lrng_internal.h"
++
++struct batched_entropy {
++ union {
++ u64 entropy_u64[LRNG_DRNG_BLOCKSIZE / sizeof(u64)];
++ u32 entropy_u32[LRNG_DRNG_BLOCKSIZE / sizeof(u32)];
++ };
++ unsigned int position;
++ spinlock_t batch_lock;
++};
++
++/*
++ * Get a random word for internal kernel use only. The quality of the random
++ * number is as good as /dev/urandom, but there is no backtrack protection,
++ * with the goal of being quite fast and not depleting entropy.
++ */
++static DEFINE_PER_CPU(struct batched_entropy, batched_entropy_u64) = {
++ .batch_lock = __SPIN_LOCK_UNLOCKED(batched_entropy_u64.lock),
++};
++
++u64 get_random_u64(void)
++{
++ u64 ret;
++ unsigned long flags;
++ struct batched_entropy *batch;
++
++ lrng_debug_report_seedlevel("get_random_u64");
++
++ batch = raw_cpu_ptr(&batched_entropy_u64);
++ spin_lock_irqsave(&batch->batch_lock, flags);
++ if (batch->position % ARRAY_SIZE(batch->entropy_u64) == 0) {
++ lrng_drng_get_atomic((u8 *)batch->entropy_u64,
++ LRNG_DRNG_BLOCKSIZE);
++ batch->position = 0;
++ }
++ ret = batch->entropy_u64[batch->position++];
++ spin_unlock_irqrestore(&batch->batch_lock, flags);
++ return ret;
++}
++EXPORT_SYMBOL(get_random_u64);
++
++static DEFINE_PER_CPU(struct batched_entropy, batched_entropy_u32) = {
++ .batch_lock = __SPIN_LOCK_UNLOCKED(batched_entropy_u32.lock),
++};
++
++u32 get_random_u32(void)
++{
++ u32 ret;
++ unsigned long flags;
++ struct batched_entropy *batch;
++
++ lrng_debug_report_seedlevel("get_random_u32");
++
++ batch = raw_cpu_ptr(&batched_entropy_u32);
++ spin_lock_irqsave(&batch->batch_lock, flags);
++ if (batch->position % ARRAY_SIZE(batch->entropy_u32) == 0) {
++ lrng_drng_get_atomic((u8 *)batch->entropy_u32,
++ LRNG_DRNG_BLOCKSIZE);
++ batch->position = 0;
++ }
++ ret = batch->entropy_u32[batch->position++];
++ spin_unlock_irqrestore(&batch->batch_lock, flags);
++ return ret;
++}
++EXPORT_SYMBOL(get_random_u32);
++
++/*
++ * It's important to invalidate all potential batched entropy that might
++ * be stored before the crng is initialized, which we can do lazily by
++ * simply resetting the counter to zero so that it's re-extracted on the
++ * next usage.
++ */
++void invalidate_batched_entropy(void)
++{
++ int cpu;
++ unsigned long flags;
++
++ for_each_possible_cpu(cpu) {
++ struct batched_entropy *batched_entropy;
++
++ batched_entropy = per_cpu_ptr(&batched_entropy_u32, cpu);
++ spin_lock_irqsave(&batched_entropy->batch_lock, flags);
++ batched_entropy->position = 0;
++ spin_unlock(&batched_entropy->batch_lock);
++
++ batched_entropy = per_cpu_ptr(&batched_entropy_u64, cpu);
++ spin_lock(&batched_entropy->batch_lock);
++ batched_entropy->position = 0;
++ spin_unlock_irqrestore(&batched_entropy->batch_lock, flags);
++ }
++}
++
++/*
++ * randomize_page - Generate a random, page aligned address
++ * @start: The smallest acceptable address the caller will take.
++ * @range: The size of the area, starting at @start, within which the
++ * random address must fall.
++ *
++ * If @start + @range would overflow, @range is capped.
++ *
++ * NOTE: Historical use of randomize_range, which this replaces, presumed that
++ * @start was already page aligned. We now align it regardless.
++ *
++ * Return: A page aligned address within [start, start + range). On error,
++ * @start is returned.
++ */
++unsigned long randomize_page(unsigned long start, unsigned long range)
++{
++ if (!PAGE_ALIGNED(start)) {
++ range -= PAGE_ALIGN(start) - start;
++ start = PAGE_ALIGN(start);
++ }
++
++ if (start > ULONG_MAX - range)
++ range = ULONG_MAX - start;
++
++ range >>= PAGE_SHIFT;
++
++ if (range == 0)
++ return start;
++
++ return start + (get_random_long() % range << PAGE_SHIFT);
++}
+diff -urN linux-5.15/drivers/char/lrng/lrng_chacha20.c linux-5.15-lrng/drivers/char/lrng/lrng_chacha20.c
+--- linux-5.15/drivers/char/lrng/lrng_chacha20.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_chacha20.c 2021-11-29 12:36:52.113279174 +1100
+@@ -0,0 +1,321 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * Backend for the LRNG providing the cryptographic primitives using
++ * ChaCha20 cipher implementations.
++ *
++ * Copyright (C) 2016 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <crypto/chacha.h>
++#include <linux/lrng.h>
++#include <linux/random.h>
++#include <linux/slab.h>
++
++#include "lrng_chacha20.h"
++#include "lrng_internal.h"
++
++/******************************* ChaCha20 DRNG *******************************/
++
++#define CHACHA_BLOCK_WORDS (CHACHA_BLOCK_SIZE / sizeof(u32))
++
++struct chacha20_state {
++ struct chacha20_block block;
++};
++
++/*
++ * Have a static memory blocks for the ChaCha20 DRNG instance to avoid calling
++ * kmalloc too early in the boot cycle. For subsequent allocation requests,
++ * such as per-NUMA-node DRNG instances, kmalloc will be used.
++ */
++struct chacha20_state chacha20 __latent_entropy;
++
++/*
++ * Update of the ChaCha20 state by either using an unused buffer part or by
++ * generating one ChaCha20 block which is half of the state of the ChaCha20.
++ * The block is XORed into the key part of the state. This shall ensure
++ * backtracking resistance as well as a proper mix of the ChaCha20 state once
++ * the key is injected.
++ */
++static void lrng_chacha20_update(struct chacha20_state *chacha20_state,
++ __le32 *buf, u32 used_words)
++{
++ struct chacha20_block *chacha20 = &chacha20_state->block;
++ u32 i;
++ __le32 tmp[CHACHA_BLOCK_WORDS];
++
++ BUILD_BUG_ON(sizeof(struct chacha20_block) != CHACHA_BLOCK_SIZE);
++ BUILD_BUG_ON(CHACHA_BLOCK_SIZE != 2 * CHACHA_KEY_SIZE);
++
++ if (used_words > CHACHA_KEY_SIZE_WORDS) {
++ chacha20_block(&chacha20->constants[0], (u8 *)tmp);
++ for (i = 0; i < CHACHA_KEY_SIZE_WORDS; i++)
++ chacha20->key.u[i] ^= le32_to_cpu(tmp[i]);
++ memzero_explicit(tmp, sizeof(tmp));
++ } else {
++ for (i = 0; i < CHACHA_KEY_SIZE_WORDS; i++)
++ chacha20->key.u[i] ^= le32_to_cpu(buf[i + used_words]);
++ }
++
++ /* Deterministic increment of nonce as required in RFC 7539 chapter 4 */
++ chacha20->nonce[0]++;
++ if (chacha20->nonce[0] == 0) {
++ chacha20->nonce[1]++;
++ if (chacha20->nonce[1] == 0)
++ chacha20->nonce[2]++;
++ }
++
++ /* Leave counter untouched as it is start value is undefined in RFC */
++}
++
++/*
++ * Seed the ChaCha20 DRNG by injecting the input data into the key part of
++ * the ChaCha20 state. If the input data is longer than the ChaCha20 key size,
++ * perform a ChaCha20 operation after processing of key size input data.
++ * This operation shall spread out the entropy into the ChaCha20 state before
++ * new entropy is injected into the key part.
++ */
++static int lrng_cc20_drng_seed_helper(void *drng, const u8 *inbuf, u32 inbuflen)
++{
++ struct chacha20_state *chacha20_state = (struct chacha20_state *)drng;
++ struct chacha20_block *chacha20 = &chacha20_state->block;
++
++ while (inbuflen) {
++ u32 i, todo = min_t(u32, inbuflen, CHACHA_KEY_SIZE);
++
++ for (i = 0; i < todo; i++)
++ chacha20->key.b[i] ^= inbuf[i];
++
++ /* Break potential dependencies between the inbuf key blocks */
++ lrng_chacha20_update(chacha20_state, NULL,
++ CHACHA_BLOCK_WORDS);
++ inbuf += todo;
++ inbuflen -= todo;
++ }
++
++ return 0;
++}
++
++/*
++ * Chacha20 DRNG generation of random numbers: the stream output of ChaCha20
++ * is the random number. After the completion of the generation of the
++ * stream, the entire ChaCha20 state is updated.
++ *
++ * Note, as the ChaCha20 implements a 32 bit counter, we must ensure
++ * that this function is only invoked for at most 2^32 - 1 ChaCha20 blocks
++ * before a reseed or an update happens. This is ensured by the variable
++ * outbuflen which is a 32 bit integer defining the number of bytes to be
++ * generated by the ChaCha20 DRNG. At the end of this function, an update
++ * operation is invoked which implies that the 32 bit counter will never be
++ * overflown in this implementation.
++ */
++static int lrng_cc20_drng_generate_helper(void *drng, u8 *outbuf, u32 outbuflen)
++{
++ struct chacha20_state *chacha20_state = (struct chacha20_state *)drng;
++ struct chacha20_block *chacha20 = &chacha20_state->block;
++ __le32 aligned_buf[CHACHA_BLOCK_WORDS];
++ u32 ret = outbuflen, used = CHACHA_BLOCK_WORDS;
++ int zeroize_buf = 0;
++
++ while (outbuflen >= CHACHA_BLOCK_SIZE) {
++ chacha20_block(&chacha20->constants[0], outbuf);
++ outbuf += CHACHA_BLOCK_SIZE;
++ outbuflen -= CHACHA_BLOCK_SIZE;
++ }
++
++ if (outbuflen) {
++ chacha20_block(&chacha20->constants[0], (u8 *)aligned_buf);
++ memcpy(outbuf, aligned_buf, outbuflen);
++ used = ((outbuflen + sizeof(aligned_buf[0]) - 1) /
++ sizeof(aligned_buf[0]));
++ zeroize_buf = 1;
++ }
++
++ lrng_chacha20_update(chacha20_state, aligned_buf, used);
++
++ if (zeroize_buf)
++ memzero_explicit(aligned_buf, sizeof(aligned_buf));
++
++ return ret;
++}
++
++void lrng_cc20_init_state(struct chacha20_state *state)
++{
++ lrng_cc20_init_rfc7539(&state->block);
++}
++
++/*
++ * Allocation of the DRNG state
++ */
++static void *lrng_cc20_drng_alloc(u32 sec_strength)
++{
++ struct chacha20_state *state = NULL;
++
++ if (sec_strength > CHACHA_KEY_SIZE) {
++ pr_err("Security strength of ChaCha20 DRNG (%u bits) lower than requested by LRNG (%u bits)\n",
++ CHACHA_KEY_SIZE * 8, sec_strength * 8);
++ return ERR_PTR(-EINVAL);
++ }
++ if (sec_strength < CHACHA_KEY_SIZE)
++ pr_warn("Security strength of ChaCha20 DRNG (%u bits) higher than requested by LRNG (%u bits)\n",
++ CHACHA_KEY_SIZE * 8, sec_strength * 8);
++
++ state = kmalloc(sizeof(struct chacha20_state), GFP_KERNEL);
++ if (!state)
++ return ERR_PTR(-ENOMEM);
++ pr_debug("memory for ChaCha20 core allocated\n");
++
++ lrng_cc20_init_state(state);
++
++ return state;
++}
++
++static void lrng_cc20_drng_dealloc(void *drng)
++{
++ struct chacha20_state *chacha20_state = (struct chacha20_state *)drng;
++
++ if (drng == &chacha20) {
++ memzero_explicit(chacha20_state, sizeof(*chacha20_state));
++ pr_debug("static ChaCha20 core zeroized\n");
++ return;
++ }
++
++ pr_debug("ChaCha20 core zeroized and freed\n");
++ kfree_sensitive(chacha20_state);
++}
++
++/******************************* Hash Operation *******************************/
++
++#ifdef CONFIG_CRYPTO_LIB_SHA256
++
++#include <crypto/sha2.h>
++
++static u32 lrng_cc20_hash_digestsize(void *hash)
++{
++ return SHA256_DIGEST_SIZE;
++}
++
++static int lrng_cc20_hash_init(struct shash_desc *shash, void *hash)
++{
++ /*
++ * We do not need a TFM - we only need sufficient space for
++ * struct sha256_state on the stack.
++ */
++ sha256_init(shash_desc_ctx(shash));
++ return 0;
++}
++
++static int lrng_cc20_hash_update(struct shash_desc *shash,
++ const u8 *inbuf, u32 inbuflen)
++{
++ sha256_update(shash_desc_ctx(shash), inbuf, inbuflen);
++ return 0;
++}
++
++static int lrng_cc20_hash_final(struct shash_desc *shash, u8 *digest)
++{
++ sha256_final(shash_desc_ctx(shash), digest);
++ return 0;
++}
++
++static const char *lrng_cc20_hash_name(void)
++{
++ return "SHA-256";
++}
++
++static void lrng_cc20_hash_desc_zero(struct shash_desc *shash)
++{
++ memzero_explicit(shash_desc_ctx(shash), sizeof(struct sha256_state));
++}
++
++#else /* CONFIG_CRYPTO_LIB_SHA256 */
++
++#include <crypto/sha1.h>
++#include <crypto/sha1_base.h>
++
++/*
++ * If the SHA-256 support is not compiled, we fall back to SHA-1 that is always
++ * compiled and present in the kernel.
++ */
++static u32 lrng_cc20_hash_digestsize(void *hash)
++{
++ return SHA1_DIGEST_SIZE;
++}
++
++static void lrng_sha1_block_fn(struct sha1_state *sctx, const u8 *src,
++ int blocks)
++{
++ u32 temp[SHA1_WORKSPACE_WORDS];
++
++ while (blocks--) {
++ sha1_transform(sctx->state, src, temp);
++ src += SHA1_BLOCK_SIZE;
++ }
++ memzero_explicit(temp, sizeof(temp));
++}
++
++static int lrng_cc20_hash_init(struct shash_desc *shash, void *hash)
++{
++ /*
++ * We do not need a TFM - we only need sufficient space for
++ * struct sha1_state on the stack.
++ */
++ sha1_base_init(shash);
++ return 0;
++}
++
++static int lrng_cc20_hash_update(struct shash_desc *shash,
++ const u8 *inbuf, u32 inbuflen)
++{
++ return sha1_base_do_update(shash, inbuf, inbuflen, lrng_sha1_block_fn);
++}
++
++static int lrng_cc20_hash_final(struct shash_desc *shash, u8 *digest)
++{
++ return sha1_base_do_finalize(shash, lrng_sha1_block_fn) ?:
++ sha1_base_finish(shash, digest);
++}
++
++static const char *lrng_cc20_hash_name(void)
++{
++ return "SHA-1";
++}
++
++static void lrng_cc20_hash_desc_zero(struct shash_desc *shash)
++{
++ memzero_explicit(shash_desc_ctx(shash), sizeof(struct sha1_state));
++}
++
++#endif /* CONFIG_CRYPTO_LIB_SHA256 */
++
++static void *lrng_cc20_hash_alloc(void)
++{
++ pr_info("Hash %s allocated\n", lrng_cc20_hash_name());
++ return NULL;
++}
++
++static void lrng_cc20_hash_dealloc(void *hash)
++{
++}
++
++static const char *lrng_cc20_drng_name(void)
++{
++ return "ChaCha20 DRNG";
++}
++
++const struct lrng_crypto_cb lrng_cc20_crypto_cb = {
++ .lrng_drng_name = lrng_cc20_drng_name,
++ .lrng_hash_name = lrng_cc20_hash_name,
++ .lrng_drng_alloc = lrng_cc20_drng_alloc,
++ .lrng_drng_dealloc = lrng_cc20_drng_dealloc,
++ .lrng_drng_seed_helper = lrng_cc20_drng_seed_helper,
++ .lrng_drng_generate_helper = lrng_cc20_drng_generate_helper,
++ .lrng_hash_alloc = lrng_cc20_hash_alloc,
++ .lrng_hash_dealloc = lrng_cc20_hash_dealloc,
++ .lrng_hash_digestsize = lrng_cc20_hash_digestsize,
++ .lrng_hash_init = lrng_cc20_hash_init,
++ .lrng_hash_update = lrng_cc20_hash_update,
++ .lrng_hash_final = lrng_cc20_hash_final,
++ .lrng_hash_desc_zero = lrng_cc20_hash_desc_zero,
++};
+diff -urN linux-5.15/drivers/char/lrng/lrng_chacha20.h linux-5.15-lrng/drivers/char/lrng/lrng_chacha20.h
+--- linux-5.15/drivers/char/lrng/lrng_chacha20.h 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_chacha20.h 2021-11-29 12:36:52.113279174 +1100
+@@ -0,0 +1,25 @@
++/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
++/*
++ * LRNG ChaCha20 definitions
++ *
++ * Copyright (C) 2016 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#include <crypto/chacha.h>
++
++/* State according to RFC 7539 section 2.3 */
++struct chacha20_block {
++ u32 constants[4];
++ union {
++#define CHACHA_KEY_SIZE_WORDS (CHACHA_KEY_SIZE / sizeof(u32))
++ u32 u[CHACHA_KEY_SIZE_WORDS];
++ u8 b[CHACHA_KEY_SIZE];
++ } key;
++ u32 counter;
++ u32 nonce[3];
++};
++
++static inline void lrng_cc20_init_rfc7539(struct chacha20_block *chacha20)
++{
++ chacha_init_consts(chacha20->constants);
++}
+diff -urN linux-5.15/drivers/char/lrng/lrng_drbg.c linux-5.15-lrng/drivers/char/lrng/lrng_drbg.c
+--- linux-5.15/drivers/char/lrng/lrng_drbg.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_drbg.c 2021-11-29 12:37:37.193279002 +1100
+@@ -0,0 +1,198 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * Backend for the LRNG providing the cryptographic primitives using the
++ * kernel crypto API and its DRBG.
++ *
++ * Copyright (C) 2016 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <crypto/drbg.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/lrng.h>
++
++#include "lrng_kcapi_hash.h"
++
++/*
++ * Define a DRBG plus a hash / MAC used to extract data from the entropy pool.
++ * For LRNG_HASH_NAME you can use a hash or a MAC (HMAC or CMAC) of your choice
++ * (Note, you should use the suggested selections below -- using SHA-1 or MD5
++ * is not wise). The idea is that the used cipher primitive can be selected to
++ * be the same as used for the DRBG. I.e. the LRNG only uses one cipher
++ * primitive using the same cipher implementation with the options offered in
++ * the following. This means, if the CTR DRBG is selected and AES-NI is present,
++ * both the CTR DRBG and the selected cmac(aes) use AES-NI.
++ *
++ * The security strengths of the DRBGs are all 256 bits according to
++ * SP800-57 section 5.6.1.
++ *
++ * This definition is allowed to be changed.
++ */
++#ifdef CONFIG_CRYPTO_DRBG_CTR
++static unsigned int lrng_drbg_type = 0;
++#elif defined CONFIG_CRYPTO_DRBG_HMAC
++static unsigned int lrng_drbg_type = 1;
++#elif defined CONFIG_CRYPTO_DRBG_HASH
++static unsigned int lrng_drbg_type = 2;
++#else
++#error "Unknown DRBG in use"
++#endif
++
++/* The parameter must be r/o in sysfs as otherwise races appear. */
++module_param(lrng_drbg_type, uint, 0444);
++MODULE_PARM_DESC(lrng_drbg_type, "DRBG type used for LRNG (0->CTR_DRBG, 1->HMAC_DRBG, 2->Hash_DRBG)");
++
++struct lrng_drbg {
++ const char *hash_name;
++ const char *drbg_core;
++};
++
++static const struct lrng_drbg lrng_drbg_types[] = {
++ { /* CTR_DRBG with AES-256 using derivation function */
++ .hash_name = "sha512",
++ .drbg_core = "drbg_nopr_ctr_aes256",
++ }, { /* HMAC_DRBG with SHA-512 */
++ .hash_name = "sha512",
++ .drbg_core = "drbg_nopr_hmac_sha512",
++ }, { /* Hash_DRBG with SHA-512 using derivation function */
++ .hash_name = "sha512",
++ .drbg_core = "drbg_nopr_sha512"
++ }
++};
++
++static int lrng_drbg_drng_seed_helper(void *drng, const u8 *inbuf, u32 inbuflen)
++{
++ struct drbg_state *drbg = (struct drbg_state *)drng;
++ LIST_HEAD(seedlist);
++ struct drbg_string data;
++ int ret;
++
++ drbg_string_fill(&data, inbuf, inbuflen);
++ list_add_tail(&data.list, &seedlist);
++ ret = drbg->d_ops->update(drbg, &seedlist, drbg->seeded);
++
++ if (ret >= 0)
++ drbg->seeded = true;
++
++ return ret;
++}
++
++static int lrng_drbg_drng_generate_helper(void *drng, u8 *outbuf, u32 outbuflen)
++{
++ struct drbg_state *drbg = (struct drbg_state *)drng;
++
++ return drbg->d_ops->generate(drbg, outbuf, outbuflen, NULL);
++}
++
++static void *lrng_drbg_drng_alloc(u32 sec_strength)
++{
++ struct drbg_state *drbg;
++ int coreref = -1;
++ bool pr = false;
++ int ret;
++
++ drbg_convert_tfm_core(lrng_drbg_types[lrng_drbg_type].drbg_core,
++ &coreref, &pr);
++ if (coreref < 0)
++ return ERR_PTR(-EFAULT);
++
++ drbg = kzalloc(sizeof(struct drbg_state), GFP_KERNEL);
++ if (!drbg)
++ return ERR_PTR(-ENOMEM);
++
++ drbg->core = &drbg_cores[coreref];
++ drbg->seeded = false;
++ ret = drbg_alloc_state(drbg);
++ if (ret)
++ goto err;
++
++ if (sec_strength > drbg_sec_strength(drbg->core->flags)) {
++ pr_err("Security strength of DRBG (%u bits) lower than requested by LRNG (%u bits)\n",
++ drbg_sec_strength(drbg->core->flags) * 8,
++ sec_strength * 8);
++ goto dealloc;
++ }
++
++ if (sec_strength < drbg_sec_strength(drbg->core->flags))
++ pr_warn("Security strength of DRBG (%u bits) higher than requested by LRNG (%u bits)\n",
++ drbg_sec_strength(drbg->core->flags) * 8,
++ sec_strength * 8);
++
++ pr_info("DRBG with %s core allocated\n", drbg->core->backend_cra_name);
++
++ return drbg;
++
++dealloc:
++ if (drbg->d_ops)
++ drbg->d_ops->crypto_fini(drbg);
++ drbg_dealloc_state(drbg);
++err:
++ kfree(drbg);
++ return ERR_PTR(-EINVAL);
++}
++
++static void lrng_drbg_drng_dealloc(void *drng)
++{
++ struct drbg_state *drbg = (struct drbg_state *)drng;
++
++ if (drbg && drbg->d_ops)
++ drbg->d_ops->crypto_fini(drbg);
++ drbg_dealloc_state(drbg);
++ kfree_sensitive(drbg);
++ pr_info("DRBG deallocated\n");
++}
++
++static void *lrng_drbg_hash_alloc(void)
++{
++ return lrng_kcapi_hash_alloc(lrng_drbg_types[lrng_drbg_type].hash_name);
++}
++
++static const char *lrng_drbg_name(void)
++{
++ return lrng_drbg_types[lrng_drbg_type].drbg_core;
++}
++
++static const char *lrng_hash_name(void)
++{
++ return lrng_drbg_types[lrng_drbg_type].hash_name;
++}
++
++static const struct lrng_crypto_cb lrng_drbg_crypto_cb = {
++ .lrng_drng_name = lrng_drbg_name,
++ .lrng_hash_name = lrng_hash_name,
++ .lrng_drng_alloc = lrng_drbg_drng_alloc,
++ .lrng_drng_dealloc = lrng_drbg_drng_dealloc,
++ .lrng_drng_seed_helper = lrng_drbg_drng_seed_helper,
++ .lrng_drng_generate_helper = lrng_drbg_drng_generate_helper,
++ .lrng_hash_alloc = lrng_drbg_hash_alloc,
++ .lrng_hash_dealloc = lrng_kcapi_hash_dealloc,
++ .lrng_hash_digestsize = lrng_kcapi_hash_digestsize,
++ .lrng_hash_init = lrng_kcapi_hash_init,
++ .lrng_hash_update = lrng_kcapi_hash_update,
++ .lrng_hash_final = lrng_kcapi_hash_final,
++ .lrng_hash_desc_zero = lrng_kcapi_hash_zero,
++};
++
++static int __init lrng_drbg_init(void)
++{
++ if (lrng_drbg_type >= ARRAY_SIZE(lrng_drbg_types)) {
++ pr_err("lrng_drbg_type parameter too large (given %u - max: %lu)",
++ lrng_drbg_type,
++ (unsigned long)ARRAY_SIZE(lrng_drbg_types) - 1);
++ return -EAGAIN;
++ }
++ return lrng_set_drng_cb(&lrng_drbg_crypto_cb);
++}
++
++static void __exit lrng_drbg_exit(void)
++{
++ lrng_set_drng_cb(NULL);
++}
++
++late_initcall(lrng_drbg_init);
++module_exit(lrng_drbg_exit);
++MODULE_LICENSE("Dual BSD/GPL");
++MODULE_AUTHOR("Stephan Mueller <smueller@chronox.de>");
++MODULE_DESCRIPTION("Linux Random Number Generator - SP800-90A DRBG backend");
+diff -urN linux-5.15/drivers/char/lrng/lrng_drng.c linux-5.15-lrng/drivers/char/lrng/lrng_drng.c
+--- linux-5.15/drivers/char/lrng/lrng_drng.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_drng.c 2021-11-29 12:36:52.113279174 +1100
+@@ -0,0 +1,451 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * LRNG DRNG processing
++ *
++ * Copyright (C) 2016 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <linux/fips.h>
++#include <linux/lrng.h>
++
++#include "lrng_internal.h"
++
++/*
++ * Maximum number of seconds between DRNG reseed intervals of the DRNG. Note,
++ * this is enforced with the next request of random numbers from the
++ * DRNG. Setting this value to zero implies a reseeding attempt before every
++ * generated random number.
++ */
++int lrng_drng_reseed_max_time = 600;
++
++static atomic_t lrng_avail = ATOMIC_INIT(0);
++
++DEFINE_MUTEX(lrng_crypto_cb_update);
++
++/* DRNG for /dev/urandom, getrandom(2), get_random_bytes */
++static struct lrng_drng lrng_drng_init = {
++ .drng = &chacha20,
++ .crypto_cb = &lrng_cc20_crypto_cb,
++ .lock = __MUTEX_INITIALIZER(lrng_drng_init.lock),
++ .spin_lock = __SPIN_LOCK_UNLOCKED(lrng_drng_init.spin_lock),
++ .hash_lock = __RW_LOCK_UNLOCKED(lrng_drng_init.hash_lock)
++};
++
++/*
++ * DRNG for get_random_bytes when called in atomic context. This
++ * DRNG will always use the ChaCha20 DRNG. It will never benefit from a
++ * DRNG switch like the "regular" DRNG. If there was no DRNG switch, the atomic
++ * DRNG is identical to the "regular" DRNG.
++ *
++ * The reason for having this is due to the fact that DRNGs other than
++ * the ChaCha20 DRNG may sleep.
++ */
++static struct lrng_drng lrng_drng_atomic = {
++ .drng = &chacha20,
++ .crypto_cb = &lrng_cc20_crypto_cb,
++ .spin_lock = __SPIN_LOCK_UNLOCKED(lrng_drng_atomic.spin_lock),
++ .hash_lock = __RW_LOCK_UNLOCKED(lrng_drng_atomic.hash_lock)
++};
++
++static u32 max_wo_reseed = LRNG_DRNG_MAX_WITHOUT_RESEED;
++#ifdef CONFIG_LRNG_RUNTIME_MAX_WO_RESEED_CONFIG
++module_param(max_wo_reseed, uint, 0444);
++MODULE_PARM_DESC(max_wo_reseed,
++ "Maximum number of DRNG generate operation without full reseed\n");
++#endif
++
++/********************************** Helper ************************************/
++
++bool lrng_get_available(void)
++{
++ return likely(atomic_read(&lrng_avail));
++}
++
++void lrng_set_available(void)
++{
++ atomic_set(&lrng_avail, 1);
++}
++
++struct lrng_drng *lrng_drng_init_instance(void)
++{
++ return &lrng_drng_init;
++}
++
++struct lrng_drng *lrng_drng_atomic_instance(void)
++{
++ return &lrng_drng_atomic;
++}
++
++void lrng_drng_reset(struct lrng_drng *drng)
++{
++ atomic_set(&drng->requests, LRNG_DRNG_RESEED_THRESH);
++ atomic_set(&drng->requests_since_fully_seeded, 0);
++ drng->last_seeded = jiffies;
++ drng->fully_seeded = false;
++ drng->force_reseed = true;
++ pr_debug("reset DRNG\n");
++}
++
++/* Initialize the default DRNG during boot */
++static void lrng_drng_seed(struct lrng_drng *drng);
++void lrng_drngs_init_cc20(bool force_seed)
++{
++ unsigned long flags = 0;
++
++ if (lrng_get_available())
++ return;
++
++ lrng_drng_lock(&lrng_drng_init, &flags);
++ if (lrng_get_available()) {
++ lrng_drng_unlock(&lrng_drng_init, &flags);
++ if (force_seed)
++ goto seed;
++ return;
++ }
++
++ lrng_drng_reset(&lrng_drng_init);
++ lrng_cc20_init_state(&chacha20);
++ lrng_drng_unlock(&lrng_drng_init, &flags);
++
++ lrng_drng_lock(&lrng_drng_atomic, &flags);
++ lrng_drng_reset(&lrng_drng_atomic);
++ /*
++ * We do not initialize the state of the atomic DRNG as it is identical
++ * to the DRNG at this point.
++ */
++ lrng_drng_unlock(&lrng_drng_atomic, &flags);
++
++ lrng_set_available();
++
++seed:
++ /* Seed the DRNG with any entropy available */
++ if (!lrng_pool_trylock()) {
++ lrng_drng_seed(&lrng_drng_init);
++ pr_info("ChaCha20 core initialized with first seeding\n");
++ lrng_pool_unlock();
++ } else {
++ pr_info("ChaCha20 core initialized without seeding\n");
++ }
++}
++
++bool lrng_sp80090c_compliant(void)
++{
++ if (!IS_ENABLED(CONFIG_LRNG_OVERSAMPLE_ENTROPY_SOURCES))
++ return false;
++
++ /* Entropy source hash must be capable of transporting enough entropy */
++ if (lrng_get_digestsize() <
++ (lrng_security_strength() + CONFIG_LRNG_SEED_BUFFER_INIT_ADD_BITS))
++ return false;
++
++ /* SP800-90C only requested in FIPS mode */
++ return fips_enabled;
++}
++
++/************************* Random Number Generation ***************************/
++
++/* Inject a data buffer into the DRNG */
++static void lrng_drng_inject(struct lrng_drng *drng,
++ const u8 *inbuf, u32 inbuflen, bool fully_seeded)
++{
++ const char *drng_type = unlikely(drng == &lrng_drng_atomic) ?
++ "atomic" : "regular";
++ unsigned long flags = 0;
++
++ BUILD_BUG_ON(LRNG_DRNG_RESEED_THRESH > INT_MAX);
++ pr_debug("seeding %s DRNG with %u bytes\n", drng_type, inbuflen);
++ lrng_drng_lock(drng, &flags);
++ if (drng->crypto_cb->lrng_drng_seed_helper(drng->drng,
++ inbuf, inbuflen) < 0) {
++ pr_warn("seeding of %s DRNG failed\n", drng_type);
++ drng->force_reseed = true;
++ } else {
++ int gc = LRNG_DRNG_RESEED_THRESH - atomic_read(&drng->requests);
++
++ pr_debug("%s DRNG stats since last seeding: %lu secs; generate calls: %d\n",
++ drng_type,
++ (time_after(jiffies, drng->last_seeded) ?
++ (jiffies - drng->last_seeded) : 0) / HZ, gc);
++
++ /* Count the numbers of generate ops since last fully seeded */
++ if (fully_seeded)
++ atomic_set(&drng->requests_since_fully_seeded, 0);
++ else
++ atomic_add(gc, &drng->requests_since_fully_seeded);
++
++ drng->last_seeded = jiffies;
++ atomic_set(&drng->requests, LRNG_DRNG_RESEED_THRESH);
++ drng->force_reseed = false;
++
++ if (!drng->fully_seeded) {
++ drng->fully_seeded = fully_seeded;
++ if (drng->fully_seeded)
++ pr_debug("DRNG fully seeded\n");
++ }
++
++ if (drng->drng == lrng_drng_atomic.drng) {
++ lrng_drng_atomic.last_seeded = jiffies;
++ atomic_set(&lrng_drng_atomic.requests,
++ LRNG_DRNG_RESEED_THRESH);
++ lrng_drng_atomic.force_reseed = false;
++ }
++ }
++ lrng_drng_unlock(drng, &flags);
++}
++
++/*
++ * Perform the seeding of the DRNG with data from noise source
++ */
++static inline void _lrng_drng_seed(struct lrng_drng *drng)
++{
++ struct entropy_buf seedbuf __aligned(LRNG_KCAPI_ALIGN);
++
++ lrng_fill_seed_buffer(&seedbuf,
++ lrng_get_seed_entropy_osr(drng->fully_seeded));
++ lrng_init_ops(&seedbuf);
++ lrng_drng_inject(drng, (u8 *)&seedbuf, sizeof(seedbuf),
++ lrng_fully_seeded(drng->fully_seeded, &seedbuf));
++ memzero_explicit(&seedbuf, sizeof(seedbuf));
++}
++
++static int lrng_drng_get(struct lrng_drng *drng, u8 *outbuf, u32 outbuflen);
++static void lrng_drng_seed(struct lrng_drng *drng)
++{
++ _lrng_drng_seed(drng);
++
++ BUILD_BUG_ON(LRNG_MIN_SEED_ENTROPY_BITS >
++ LRNG_DRNG_SECURITY_STRENGTH_BITS);
++
++ /*
++ * Reseed atomic DRNG from current DRNG,
++ *
++ * We can obtain random numbers from DRNG as the lock type
++ * chosen by lrng_drng_get is usable with the current caller.
++ */
++ if ((drng->drng != lrng_drng_atomic.drng) &&
++ (lrng_drng_atomic.force_reseed ||
++ atomic_read(&lrng_drng_atomic.requests) <= 0 ||
++ time_after(jiffies, lrng_drng_atomic.last_seeded +
++ lrng_drng_reseed_max_time * HZ))) {
++ u8 seedbuf[LRNG_DRNG_SECURITY_STRENGTH_BYTES]
++ __aligned(LRNG_KCAPI_ALIGN);
++ int ret = lrng_drng_get(drng, seedbuf, sizeof(seedbuf));
++
++ if (ret < 0) {
++ pr_warn("Error generating random numbers for atomic DRNG: %d\n",
++ ret);
++ } else {
++ lrng_drng_inject(&lrng_drng_atomic, seedbuf, ret, true);
++ }
++ memzero_explicit(&seedbuf, sizeof(seedbuf));
++ }
++}
++
++static inline void _lrng_drng_seed_work(struct lrng_drng *drng, u32 node)
++{
++ pr_debug("reseed triggered by interrupt noise source for DRNG on NUMA node %d\n",
++ node);
++ lrng_drng_seed(drng);
++ if (drng->fully_seeded) {
++ /* Prevent reseed storm */
++ drng->last_seeded += node * 100 * HZ;
++ /* Prevent draining of pool on idle systems */
++ lrng_drng_reseed_max_time += 100;
++ }
++}
++
++/*
++ * DRNG reseed trigger: Kernel thread handler triggered by the schedule_work()
++ */
++void lrng_drng_seed_work(struct work_struct *dummy)
++{
++ struct lrng_drng **lrng_drng = lrng_drng_instances();
++ u32 node;
++
++ if (lrng_drng) {
++ for_each_online_node(node) {
++ struct lrng_drng *drng = lrng_drng[node];
++
++ if (drng && !drng->fully_seeded) {
++ _lrng_drng_seed_work(drng, node);
++ goto out;
++ }
++ }
++ } else {
++ if (!lrng_drng_init.fully_seeded) {
++ _lrng_drng_seed_work(&lrng_drng_init, 0);
++ goto out;
++ }
++ }
++
++ lrng_pool_all_numa_nodes_seeded(true);
++
++out:
++ /* Allow the seeding operation to be called again */
++ lrng_pool_unlock();
++}
++
++/* Force all DRNGs to reseed before next generation */
++void lrng_drng_force_reseed(void)
++{
++ struct lrng_drng **lrng_drng = lrng_drng_instances();
++ u32 node;
++
++ /*
++ * If the initial DRNG is over the reseed threshold, allow a forced
++ * reseed only for the initial DRNG as this is the fallback for all. It
++ * must be kept seeded before all others to keep the LRNG operational.
++ */
++ if (!lrng_drng ||
++ (atomic_read_u32(&lrng_drng_init.requests_since_fully_seeded) >
++ LRNG_DRNG_RESEED_THRESH)) {
++ lrng_drng_init.force_reseed = lrng_drng_init.fully_seeded;
++ pr_debug("force reseed of initial DRNG\n");
++ return;
++ }
++ for_each_online_node(node) {
++ struct lrng_drng *drng = lrng_drng[node];
++
++ if (!drng)
++ continue;
++
++ drng->force_reseed = drng->fully_seeded;
++ pr_debug("force reseed of DRNG on node %u\n", node);
++ }
++ lrng_drng_atomic.force_reseed = lrng_drng_atomic.fully_seeded;
++}
++
++/*
++ * lrng_drng_get() - Get random data out of the DRNG which is reseeded
++ * frequently.
++ *
++ * @outbuf: buffer for storing random data
++ * @outbuflen: length of outbuf
++ *
++ * Return:
++ * * < 0 in error case (DRNG generation or update failed)
++ * * >=0 returning the returned number of bytes
++ */
++static int lrng_drng_get(struct lrng_drng *drng, u8 *outbuf, u32 outbuflen)
++{
++ unsigned long flags = 0;
++ u32 processed = 0;
++
++ if (!outbuf || !outbuflen)
++ return 0;
++
++ outbuflen = min_t(size_t, outbuflen, INT_MAX);
++
++ lrng_drngs_init_cc20(false);
++
++ /* If DRNG operated without proper reseed for too long, block LRNG */
++ BUILD_BUG_ON(LRNG_DRNG_MAX_WITHOUT_RESEED < LRNG_DRNG_RESEED_THRESH);
++ if (atomic_read_u32(&drng->requests_since_fully_seeded) > max_wo_reseed)
++ lrng_unset_fully_seeded(drng);
++
++ while (outbuflen) {
++ u32 todo = min_t(u32, outbuflen, LRNG_DRNG_MAX_REQSIZE);
++ int ret;
++
++ /* All but the atomic DRNG are seeded during generation */
++ if (atomic_dec_and_test(&drng->requests) ||
++ drng->force_reseed ||
++ time_after(jiffies, drng->last_seeded +
++ lrng_drng_reseed_max_time * HZ)) {
++ if (likely(drng != &lrng_drng_atomic)) {
++ if (lrng_pool_trylock()) {
++ drng->force_reseed = true;
++ } else {
++ lrng_drng_seed(drng);
++ lrng_pool_unlock();
++ }
++ }
++ }
++
++ lrng_drng_lock(drng, &flags);
++ ret = drng->crypto_cb->lrng_drng_generate_helper(
++ drng->drng, outbuf + processed, todo);
++ lrng_drng_unlock(drng, &flags);
++ if (ret <= 0) {
++ pr_warn("getting random data from DRNG failed (%d)\n",
++ ret);
++ return -EFAULT;
++ }
++ processed += ret;
++ outbuflen -= ret;
++ }
++
++ return processed;
++}
++
++int lrng_drng_get_atomic(u8 *outbuf, u32 outbuflen)
++{
++ return lrng_drng_get(&lrng_drng_atomic, outbuf, outbuflen);
++}
++
++int lrng_drng_get_sleep(u8 *outbuf, u32 outbuflen)
++{
++ struct lrng_drng **lrng_drng = lrng_drng_instances();
++ struct lrng_drng *drng = &lrng_drng_init;
++ int node = numa_node_id();
++
++ might_sleep();
++
++ if (lrng_drng && lrng_drng[node] && lrng_drng[node]->fully_seeded)
++ drng = lrng_drng[node];
++
++ return lrng_drng_get(drng, outbuf, outbuflen);
++}
++
++/* Reset LRNG such that all existing entropy is gone */
++static void _lrng_reset(struct work_struct *work)
++{
++ struct lrng_drng **lrng_drng = lrng_drng_instances();
++ unsigned long flags = 0;
++
++ if (!lrng_drng) {
++ lrng_drng_lock(&lrng_drng_init, &flags);
++ lrng_drng_reset(&lrng_drng_init);
++ lrng_drng_unlock(&lrng_drng_init, &flags);
++ } else {
++ u32 node;
++
++ for_each_online_node(node) {
++ struct lrng_drng *drng = lrng_drng[node];
++
++ if (!drng)
++ continue;
++ lrng_drng_lock(drng, &flags);
++ lrng_drng_reset(drng);
++ lrng_drng_unlock(drng, &flags);
++ }
++ }
++ lrng_set_entropy_thresh(LRNG_INIT_ENTROPY_BITS);
++
++ lrng_reset_state();
++}
++
++static DECLARE_WORK(lrng_reset_work, _lrng_reset);
++
++void lrng_reset(void)
++{
++ schedule_work(&lrng_reset_work);
++}
++
++/***************************** Initialize LRNG *******************************/
++
++static int __init lrng_init(void)
++{
++ lrng_drngs_init_cc20(false);
++
++ lrng_drngs_numa_alloc();
++ return 0;
++}
++
++late_initcall(lrng_init);
++
++MODULE_LICENSE("Dual BSD/GPL");
++MODULE_AUTHOR("Stephan Mueller <smueller@chronox.de>");
++MODULE_DESCRIPTION("Linux Random Number Generator");
+diff -urN linux-5.15/drivers/char/lrng/lrng_es_archrandom.c linux-5.15-lrng/drivers/char/lrng/lrng_es_archrandom.c
+--- linux-5.15/drivers/char/lrng/lrng_es_archrandom.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_es_archrandom.c 2021-11-29 12:37:14.483279088 +1100
+@@ -0,0 +1,226 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * LRNG Fast Entropy Source: CPU-based entropy source
++ *
++ * Copyright (C) 2016 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <crypto/hash.h>
++#include <linux/lrng.h>
++#include <linux/random.h>
++
++#include "lrng_internal.h"
++
++/*
++ * Estimated entropy of data is a 32th of LRNG_DRNG_SECURITY_STRENGTH_BITS.
++ * As we have no ability to review the implementation of those noise sources,
++ * it is prudent to have a conservative estimate here.
++ */
++#define LRNG_ARCHRANDOM_DEFAULT_STRENGTH CONFIG_LRNG_CPU_ENTROPY_RATE
++#define LRNG_ARCHRANDOM_TRUST_CPU_STRENGTH LRNG_DRNG_SECURITY_STRENGTH_BITS
++#ifdef CONFIG_RANDOM_TRUST_CPU
++static u32 archrandom = LRNG_ARCHRANDOM_TRUST_CPU_STRENGTH;
++#else
++static u32 archrandom = LRNG_ARCHRANDOM_DEFAULT_STRENGTH;
++#endif
++#ifdef CONFIG_LRNG_RUNTIME_ES_CONFIG
++module_param(archrandom, uint, 0644);
++MODULE_PARM_DESC(archrandom, "Entropy in bits of 256 data bits from CPU noise source (e.g. RDSEED)");
++#endif
++
++static int __init lrng_parse_trust_cpu(char *arg)
++{
++ int ret;
++ bool trust_cpu = false;
++
++ ret = kstrtobool(arg, &trust_cpu);
++ if (ret)
++ return ret;
++
++ if (trust_cpu) {
++ archrandom = LRNG_ARCHRANDOM_TRUST_CPU_STRENGTH;
++ lrng_pool_add_entropy();
++ } else {
++ archrandom = LRNG_ARCHRANDOM_DEFAULT_STRENGTH;
++ }
++
++ return 0;
++}
++early_param("random.trust_cpu", lrng_parse_trust_cpu);
++
++u32 lrng_archrandom_entropylevel(u32 requested_bits)
++{
++ return lrng_fast_noise_entropylevel(archrandom, requested_bits);
++}
++
++static u32 lrng_get_arch_data(u8 *outbuf, u32 requested_bits)
++{
++ u32 i;
++
++ /* operate on full blocks */
++ BUILD_BUG_ON(LRNG_DRNG_SECURITY_STRENGTH_BYTES % sizeof(unsigned long));
++ BUILD_BUG_ON(CONFIG_LRNG_SEED_BUFFER_INIT_ADD_BITS %
++ sizeof(unsigned long));
++ /* ensure we have aligned buffers */
++ BUILD_BUG_ON(LRNG_KCAPI_ALIGN % sizeof(unsigned long));
++
++ for (i = 0; i < (requested_bits >> 3);
++ i += sizeof(unsigned long)) {
++ if (!arch_get_random_seed_long((unsigned long *)(outbuf + i)) &&
++ !arch_get_random_long((unsigned long *)(outbuf + i))) {
++ archrandom = 0;
++ return 0;
++ }
++ }
++
++ return requested_bits;
++}
++
++static u32 inline lrng_get_arch_data_compress(u8 *outbuf, u32 requested_bits,
++ u32 data_multiplier)
++{
++ SHASH_DESC_ON_STACK(shash, NULL);
++ const struct lrng_crypto_cb *crypto_cb;
++ struct lrng_drng *drng = lrng_drng_init_instance();
++ unsigned long flags;
++ u32 ent_bits = 0, i, partial_bits = 0,
++ full_bits = requested_bits * data_multiplier;
++ void *hash;
++
++ /* Calculate oversampling for SP800-90C */
++ if (lrng_sp80090c_compliant()) {
++ /* Complete amount of bits to be pulled */
++ full_bits += CONFIG_LRNG_OVERSAMPLE_ES_BITS * data_multiplier;
++ /* Full blocks that will be pulled */
++ data_multiplier = full_bits / requested_bits;
++ /* Partial block in bits to be pulled */
++ partial_bits = full_bits - (data_multiplier * requested_bits);
++ }
++
++ lrng_hash_lock(drng, &flags);
++ crypto_cb = drng->crypto_cb;
++ hash = drng->hash;
++
++ if (crypto_cb->lrng_hash_init(shash, hash))
++ goto out;
++
++ /* Hash all data from the CPU entropy source */
++ for (i = 0; i < data_multiplier; i++) {
++ ent_bits = lrng_get_arch_data(outbuf, requested_bits);
++ if (!ent_bits)
++ goto out;
++
++ if (crypto_cb->lrng_hash_update(shash, outbuf, ent_bits >> 3))
++ goto err;
++ }
++
++ /* Hash partial block, if applicable */
++ ent_bits = lrng_get_arch_data(outbuf, partial_bits);
++ if (ent_bits &&
++ crypto_cb->lrng_hash_update(shash, outbuf, ent_bits >> 3))
++ goto err;
++
++ pr_debug("pulled %u bits from CPU RNG entropy source\n", full_bits);
++
++ /* Generate the compressed data to be returned to the caller */
++ ent_bits = crypto_cb->lrng_hash_digestsize(hash) << 3;
++ if (requested_bits < ent_bits) {
++ u8 digest[LRNG_MAX_DIGESTSIZE];
++
++ if (crypto_cb->lrng_hash_final(shash, digest))
++ goto err;
++
++ /* Truncate output data to requested size */
++ memcpy(outbuf, digest, requested_bits >> 3);
++ memzero_explicit(digest, crypto_cb->lrng_hash_digestsize(hash));
++ ent_bits = requested_bits;
++ } else {
++ if (crypto_cb->lrng_hash_final(shash, outbuf))
++ goto err;
++ }
++
++out:
++ crypto_cb->lrng_hash_desc_zero(shash);
++ lrng_hash_unlock(drng, flags);
++ return ent_bits;
++
++err:
++ ent_bits = 0;
++ goto out;
++}
++
++/*
++ * If CPU entropy source requires does not return full entropy, return the
++ * multiplier of how much data shall be sampled from it.
++ */
++static u32 lrng_arch_multiplier(void)
++{
++ static u32 data_multiplier = 0;
++
++ if (data_multiplier > 0) {
++ return data_multiplier;
++ } else {
++ unsigned long v;
++
++ if (IS_ENABLED(CONFIG_X86) && !arch_get_random_seed_long(&v)) {
++ /*
++ * Intel SPEC: pulling 512 blocks from RDRAND ensures
++ * one reseed making it logically equivalent to RDSEED.
++ */
++ data_multiplier = 512;
++ } else if (IS_ENABLED(CONFIG_PPC)) {
++ /*
++ * PowerISA defines DARN to deliver at least 0.5 bits of
++ * entropy per data bit.
++ */
++ data_multiplier = 2;
++ } else {
++ /* CPU provides full entropy */
++ data_multiplier = CONFIG_LRNG_CPU_FULL_ENT_MULTIPLIER;
++ }
++ }
++ return data_multiplier;
++}
++
++/*
++ * lrng_get_arch() - Get CPU entropy source entropy
++ *
++ * @outbuf: buffer to store entropy of size requested_bits
++ *
++ * Return:
++ * * > 0 on success where value provides the added entropy in bits
++ * * 0 if no fast source was available
++ */
++u32 lrng_get_arch(u8 *outbuf, u32 requested_bits)
++{
++ u32 ent_bits, data_multiplier = lrng_arch_multiplier();
++
++ if (data_multiplier <= 1) {
++ ent_bits = lrng_get_arch_data(outbuf, requested_bits);
++ } else {
++ ent_bits = lrng_get_arch_data_compress(outbuf, requested_bits,
++ data_multiplier);
++ }
++
++ ent_bits = lrng_archrandom_entropylevel(ent_bits);
++ pr_debug("obtained %u bits of entropy from CPU RNG entropy source\n",
++ ent_bits);
++ return ent_bits;
++}
++
++void lrng_arch_es_state(unsigned char *buf, size_t buflen)
++{
++ const struct lrng_drng *lrng_drng_init = lrng_drng_init_instance();
++ u32 data_multiplier = lrng_arch_multiplier();
++
++ /* Assume the lrng_drng_init lock is taken by caller */
++ snprintf(buf, buflen,
++ "CPU ES properties:\n"
++ " Hash for compressing data: %s\n"
++ " Data multiplier: %u\n",
++ (data_multiplier <= 1) ?
++ "N/A" : lrng_drng_init->crypto_cb->lrng_hash_name(),
++ data_multiplier);
++}
+diff -urN linux-5.15/drivers/char/lrng/lrng_es_aux.c linux-5.15-lrng/drivers/char/lrng/lrng_es_aux.c
+--- linux-5.15/drivers/char/lrng/lrng_es_aux.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_es_aux.c 2021-11-29 12:36:52.113279174 +1100
+@@ -0,0 +1,294 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * LRNG Slow Entropy Source: Auxiliary entropy pool
++ *
++ * Copyright (C) 2016 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <linux/lrng.h>
++
++#include "lrng_internal.h"
++
++/*
++ * This is the auxiliary pool
++ *
++ * The aux pool array is aligned to 8 bytes to comfort the kernel crypto API
++ * cipher implementations of the hash functions used to read the pool: for some
++ * accelerated implementations, we need an alignment to avoid a realignment
++ * which involves memcpy(). The alignment to 8 bytes should satisfy all crypto
++ * implementations.
++ */
++struct lrng_pool {
++ u8 aux_pool[LRNG_POOL_SIZE]; /* Aux pool: digest state */
++ atomic_t aux_entropy_bits;
++ atomic_t digestsize; /* Digest size of used hash */
++ bool initialized; /* Aux pool initialized? */
++
++ /* Serialize read of entropy pool and update of aux pool */
++ spinlock_t lock;
++};
++
++static struct lrng_pool lrng_pool __aligned(LRNG_KCAPI_ALIGN) = {
++ .aux_entropy_bits = ATOMIC_INIT(0),
++ .digestsize = ATOMIC_INIT(LRNG_ATOMIC_DIGEST_SIZE),
++ .initialized = false,
++ .lock = __SPIN_LOCK_UNLOCKED(lrng_pool.lock)
++};
++
++/********************************** Helper ***********************************/
++
++/* Entropy in bits present in aux pool */
++u32 lrng_avail_aux_entropy(void)
++{
++ /* Cap available entropy with max entropy */
++ u32 avail_bits = min_t(u32, lrng_get_digestsize(),
++ atomic_read_u32(&lrng_pool.aux_entropy_bits));
++
++ /* Consider oversampling rate due to aux pool conditioning */
++ return lrng_reduce_by_osr(avail_bits);
++}
++
++/* Set the digest size of the used hash in bytes */
++static inline void lrng_set_digestsize(u32 digestsize)
++{
++ struct lrng_pool *pool = &lrng_pool;
++ u32 ent_bits = atomic_xchg_relaxed(&pool->aux_entropy_bits, 0),
++ old_digestsize = lrng_get_digestsize();
++
++ atomic_set(&lrng_pool.digestsize, digestsize);
++
++ /*
++ * Update the /proc/.../write_wakeup_threshold which must not be larger
++ * than the digest size of the curent conditioning hash.
++ */
++ digestsize <<= 3;
++ lrng_proc_update_max_write_thresh(digestsize);
++ if (lrng_write_wakeup_bits > digestsize)
++ lrng_write_wakeup_bits = digestsize;
++
++ /*
++ * In case the new digest is larger than the old one, cap the available
++ * entropy to the old message digest used to process the existing data.
++ */
++ ent_bits = min_t(u32, ent_bits, old_digestsize);
++ atomic_add(ent_bits, &pool->aux_entropy_bits);
++}
++
++/* Obtain the digest size provided by the used hash in bits */
++u32 lrng_get_digestsize(void)
++{
++ return atomic_read_u32(&lrng_pool.digestsize) << 3;
++}
++
++/* Set entropy content in user-space controllable aux pool */
++void lrng_pool_set_entropy(u32 entropy_bits)
++{
++ atomic_set(&lrng_pool.aux_entropy_bits, entropy_bits);
++}
++
++/*
++ * Replace old with new hash for auxiliary pool handling
++ *
++ * Assumption: the caller must guarantee that the new_cb is available during the
++ * entire operation (e.g. it must hold the write lock against pointer updating).
++ */
++int lrng_aux_switch_hash(const struct lrng_crypto_cb *new_cb, void *new_hash,
++ const struct lrng_crypto_cb *old_cb)
++{
++ struct lrng_pool *pool = &lrng_pool;
++ struct shash_desc *shash = (struct shash_desc *)pool->aux_pool;
++ u8 digest[LRNG_MAX_DIGESTSIZE];
++ int ret;
++
++ if (!IS_ENABLED(CONFIG_LRNG_DRNG_SWITCH))
++ return -EOPNOTSUPP;
++
++ if (unlikely(!pool->initialized))
++ return 0;
++
++ /* Get the aux pool hash with old digest ... */
++ ret = old_cb->lrng_hash_final(shash, digest) ?:
++ /* ... re-initialize the hash with the new digest ... */
++ new_cb->lrng_hash_init(shash, new_hash) ?:
++ /*
++ * ... feed the old hash into the new state. We may feed
++ * uninitialized memory into the new state, but this is
++ * considered no issue and even good as we have some more
++ * uncertainty here.
++ */
++ new_cb->lrng_hash_update(shash, digest, sizeof(digest));
++ if (!ret) {
++ lrng_set_digestsize(new_cb->lrng_hash_digestsize(new_hash));
++ pr_debug("Re-initialize aux entropy pool with hash %s\n",
++ new_cb->lrng_hash_name());
++ }
++
++ memzero_explicit(digest, sizeof(digest));
++ return ret;
++}
++
++/* Insert data into auxiliary pool by using the hash update function. */
++static int
++lrng_pool_insert_aux_locked(const u8 *inbuf, u32 inbuflen, u32 entropy_bits)
++{
++ struct lrng_pool *pool = &lrng_pool;
++ struct shash_desc *shash = (struct shash_desc *)pool->aux_pool;
++ struct lrng_drng *drng = lrng_drng_init_instance();
++ const struct lrng_crypto_cb *crypto_cb;
++ unsigned long flags;
++ void *hash;
++ int ret;
++
++ entropy_bits = min_t(u32, entropy_bits, inbuflen << 3);
++
++ lrng_hash_lock(drng, &flags);
++
++ crypto_cb = drng->crypto_cb;
++ hash = drng->hash;
++
++ if (unlikely(!pool->initialized)) {
++ ret = crypto_cb->lrng_hash_init(shash, hash);
++ if (ret)
++ goto out;
++ pool->initialized = true;
++ }
++
++ ret = crypto_cb->lrng_hash_update(shash, inbuf, inbuflen);
++ if (ret)
++ goto out;
++
++ /*
++ * Cap the available entropy to the hash output size compliant to
++ * SP800-90B section 3.1.5.1 table 1.
++ */
++ entropy_bits += atomic_read_u32(&pool->aux_entropy_bits);
++ atomic_set(&pool->aux_entropy_bits,
++ min_t(u32, entropy_bits,
++ crypto_cb->lrng_hash_digestsize(hash) << 3));
++
++out:
++ lrng_hash_unlock(drng, flags);
++ return ret;
++}
++
++int lrng_pool_insert_aux(const u8 *inbuf, u32 inbuflen, u32 entropy_bits)
++{
++ struct lrng_pool *pool = &lrng_pool;
++ unsigned long flags;
++ int ret;
++
++ spin_lock_irqsave(&pool->lock, flags);
++ ret = lrng_pool_insert_aux_locked(inbuf, inbuflen, entropy_bits);
++ spin_unlock_irqrestore(&pool->lock, flags);
++
++ lrng_pool_add_entropy();
++
++ return ret;
++}
++
++/************************* Get data from entropy pool *************************/
++
++/*
++ * Get auxiliary entropy pool and its entropy content for seed buffer.
++ * Caller must hold lrng_pool.pool->lock.
++ * @outbuf: buffer to store data in with size requested_bits
++ * @requested_bits: Requested amount of entropy
++ * @return: amount of entropy in outbuf in bits.
++ */
++static inline u32 lrng_get_aux_pool(u8 *outbuf, u32 requested_bits)
++{
++ struct lrng_pool *pool = &lrng_pool;
++ struct shash_desc *shash = (struct shash_desc *)pool->aux_pool;
++ struct lrng_drng *drng = lrng_drng_init_instance();
++ const struct lrng_crypto_cb *crypto_cb;
++ unsigned long flags;
++ void *hash;
++ u32 collected_ent_bits, returned_ent_bits, unused_bits = 0,
++ digestsize;
++ u8 aux_output[LRNG_MAX_DIGESTSIZE];
++
++ if (unlikely(!pool->initialized))
++ return 0;
++
++ lrng_hash_lock(drng, &flags);
++
++ crypto_cb = drng->crypto_cb;
++ hash = drng->hash;
++ digestsize = crypto_cb->lrng_hash_digestsize(hash);
++
++ /* Ensure that no more than the size of aux_pool can be requested */
++ requested_bits = min_t(u32, requested_bits, (LRNG_MAX_DIGESTSIZE << 3));
++
++ /* Cap entropy with entropy counter from aux pool and the used digest */
++ collected_ent_bits = min_t(u32, digestsize << 3,
++ atomic_xchg_relaxed(&pool->aux_entropy_bits, 0));
++
++ /* We collected too much entropy and put the overflow back */
++ if (collected_ent_bits > (requested_bits + lrng_compress_osr())) {
++ /* Amount of bits we collected too much */
++ unused_bits = collected_ent_bits - requested_bits;
++ /* Put entropy back */
++ atomic_add(unused_bits, &pool->aux_entropy_bits);
++ /* Fix collected entropy */
++ collected_ent_bits = requested_bits;
++ }
++
++ /* Apply oversampling: discount requested oversampling rate */
++ returned_ent_bits = lrng_reduce_by_osr(collected_ent_bits);
++
++ pr_debug("obtained %u bits by collecting %u bits of entropy from aux pool, %u bits of entropy remaining\n",
++ returned_ent_bits, collected_ent_bits, unused_bits);
++
++ /* Get the digest for the aux pool to be returned to the caller ... */
++ if (crypto_cb->lrng_hash_final(shash, aux_output) ||
++ /*
++ * ... and re-initialize the aux state. Do not add the aux pool
++ * digest for backward secrecy as it will be added with the
++ * insertion of the complete seed buffer after it has been filled.
++ */
++ crypto_cb->lrng_hash_init(shash, hash)) {
++ returned_ent_bits = 0;
++ } else {
++ /*
++ * Do not truncate the output size exactly to collected_ent_bits
++ * as the aux pool may contain data that is not credited with
++ * entropy, but we want to use them to stir the DRNG state.
++ */
++ memcpy(outbuf, aux_output, requested_bits >> 3);
++ }
++
++ lrng_hash_unlock(drng, flags);
++ memzero_explicit(aux_output, digestsize);
++ return returned_ent_bits;
++}
++
++void lrng_get_backtrack_aux(struct entropy_buf *entropy_buf, u32 requested_bits)
++{
++ struct lrng_pool *pool = &lrng_pool;
++ unsigned long flags;
++
++ /* Ensure aux pool extraction and backtracking op are atomic */
++ spin_lock_irqsave(&pool->lock, flags);
++
++ entropy_buf->a_bits = lrng_get_aux_pool(entropy_buf->a, requested_bits);
++
++ /* Mix the extracted data back into pool for backtracking resistance */
++ if (lrng_pool_insert_aux_locked((u8 *)entropy_buf,
++ sizeof(struct entropy_buf), 0))
++ pr_warn("Backtracking resistance operation failed\n");
++
++ spin_unlock_irqrestore(&pool->lock, flags);
++}
++
++void lrng_aux_es_state(unsigned char *buf, size_t buflen)
++{
++ const struct lrng_drng *lrng_drng_init = lrng_drng_init_instance();
++
++ /* Assume the lrng_drng_init lock is taken by caller */
++ snprintf(buf, buflen,
++ "Auxiliary ES properties:\n"
++ " Hash for operating entropy pool: %s\n",
++ lrng_drng_init->crypto_cb->lrng_hash_name());
++}
+diff -urN linux-5.15/drivers/char/lrng/lrng_es_irq.c linux-5.15-lrng/drivers/char/lrng/lrng_es_irq.c
+--- linux-5.15/drivers/char/lrng/lrng_es_irq.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_es_irq.c 2021-11-29 12:36:57.763279152 +1100
+@@ -0,0 +1,823 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * LRNG Slow Entropy Source: Interrupt data collection
++ *
++ * Copyright (C) 2016 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <asm/irq_regs.h>
++#include <asm/ptrace.h>
++#include <crypto/hash.h>
++#include <linux/gcd.h>
++#include <linux/lrng.h>
++#include <linux/random.h>
++
++#include "lrng_internal.h"
++#include "lrng_es_irq.h"
++
++/*
++ * Number of interrupts to be recorded to assume that DRNG security strength
++ * bits of entropy are received.
++ * Note: a value below the DRNG security strength should not be defined as this
++ * may imply the DRNG can never be fully seeded in case other noise
++ * sources are unavailable.
++ */
++#define LRNG_IRQ_ENTROPY_BITS CONFIG_LRNG_IRQ_ENTROPY_RATE
++
++
++/* Number of interrupts required for LRNG_DRNG_SECURITY_STRENGTH_BITS entropy */
++static u32 lrng_irq_entropy_bits = LRNG_IRQ_ENTROPY_BITS;
++/* Is high-resolution timer present? */
++static bool lrng_irq_highres_timer = false;
++
++static u32 irq_entropy __read_mostly = LRNG_IRQ_ENTROPY_BITS;
++#ifdef CONFIG_LRNG_RUNTIME_ES_CONFIG
++module_param(irq_entropy, uint, 0444);
++MODULE_PARM_DESC(irq_entropy,
++ "How many interrupts must be collected for obtaining 256 bits of entropy\n");
++#endif
++
++/* Per-CPU array holding concatenated entropy events */
++static DEFINE_PER_CPU(u32 [LRNG_DATA_ARRAY_SIZE], lrng_pcpu_array)
++ __aligned(LRNG_KCAPI_ALIGN);
++static DEFINE_PER_CPU(u32, lrng_pcpu_array_ptr) = 0;
++static DEFINE_PER_CPU(atomic_t, lrng_pcpu_array_irqs) = ATOMIC_INIT(0);
++
++/*
++ * The entropy collection is performed by executing the following steps:
++ * 1. fill up the per-CPU array holding the time stamps
++ * 2. once the per-CPU array is full, a compression of the data into
++ * the entropy pool is performed - this happens in interrupt context
++ *
++ * If step 2 is not desired in interrupt context, the following boolean
++ * needs to be set to false. This implies that old entropy data in the
++ * per-CPU array collected since the last DRNG reseed is overwritten with
++ * new entropy data instead of retaining the entropy with the compression
++ * operation.
++ *
++ * Impact on entropy:
++ *
++ * If continuous compression is enabled, the maximum entropy that is collected
++ * per CPU between DRNG reseeds is equal to the digest size of the used hash.
++ *
++ * If continuous compression is disabled, the maximum number of entropy events
++ * that can be collected per CPU is equal to LRNG_DATA_ARRAY_SIZE. This amount
++ * of events is converted into an entropy statement which then represents the
++ * maximum amount of entropy collectible per CPU between DRNG reseeds.
++ */
++static bool lrng_pcpu_continuous_compression __read_mostly =
++ IS_ENABLED(CONFIG_LRNG_ENABLE_CONTINUOUS_COMPRESSION);
++
++#ifdef CONFIG_LRNG_SWITCHABLE_CONTINUOUS_COMPRESSION
++module_param(lrng_pcpu_continuous_compression, bool, 0444);
++MODULE_PARM_DESC(lrng_pcpu_continuous_compression,
++ "Perform entropy compression if per-CPU entropy data array is full\n");
++#endif
++
++/*
++ * Per-CPU entropy pool with compressed entropy event
++ *
++ * The per-CPU entropy pool is defined as the hash state. New data is simply
++ * inserted into the entropy pool by performing a hash update operation.
++ * To read the entropy pool, a hash final must be invoked. However, before
++ * the entropy pool is released again after a hash final, the hash init must
++ * be performed.
++ */
++static DEFINE_PER_CPU(u8 [LRNG_POOL_SIZE], lrng_pcpu_pool)
++ __aligned(LRNG_KCAPI_ALIGN);
++/*
++ * Lock to allow other CPUs to read the pool - as this is only done during
++ * reseed which is infrequent, this lock is hardly contended.
++ */
++static DEFINE_PER_CPU(spinlock_t, lrng_pcpu_lock);
++static DEFINE_PER_CPU(bool, lrng_pcpu_lock_init) = false;
++
++/* Number of time stamps analyzed to calculate a GCD */
++#define LRNG_GCD_WINDOW_SIZE 100
++static u32 lrng_gcd_history[LRNG_GCD_WINDOW_SIZE];
++static atomic_t lrng_gcd_history_ptr = ATOMIC_INIT(-1);
++
++/* The common divisor for all timestamps */
++static u32 lrng_gcd_timer = 0;
++
++static inline bool lrng_gcd_tested(void)
++{
++ return (lrng_gcd_timer != 0);
++}
++
++/* Set the GCD for use in IRQ ES - if 0, the GCD calculation is restarted. */
++static inline void _lrng_gcd_set(u32 running_gcd)
++{
++ lrng_gcd_timer = running_gcd;
++ mb();
++}
++
++static void lrng_gcd_set(u32 running_gcd)
++{
++ if (!lrng_gcd_tested()) {
++ _lrng_gcd_set(running_gcd);
++ pr_debug("Setting GCD to %u\n", running_gcd);
++ }
++}
++
++u32 lrng_gcd_analyze(u32 *history, size_t nelem)
++{
++ u32 running_gcd = 0;
++ size_t i;
++
++ /* Now perform the analysis on the accumulated time data. */
++ for (i = 0; i < nelem; i++) {
++ /*
++ * NOTE: this would be the place to add more analysis on the
++ * appropriateness of the timer like checking the presence
++ * of sufficient variations in the timer.
++ */
++
++ /*
++ * This calculates the gcd of all the time values. that is
++ * gcd(time_1, time_2, ..., time_nelem)
++ *
++ * Some timers increment by a fixed (non-1) amount each step.
++ * This code checks for such increments, and allows the library
++ * to output the number of such changes have occurred.
++ */
++ running_gcd = (u32)gcd(history[i], running_gcd);
++
++ /* Zeroize data */
++ history[i] = 0;
++ }
++
++ return running_gcd;
++}
++
++static void lrng_gcd_add_value(u32 time)
++{
++ u32 ptr = (u32)atomic_inc_return_relaxed(&lrng_gcd_history_ptr);
++
++ if (ptr < LRNG_GCD_WINDOW_SIZE) {
++ lrng_gcd_history[ptr] = time;
++ } else if (ptr == LRNG_GCD_WINDOW_SIZE) {
++ u32 gcd = lrng_gcd_analyze(lrng_gcd_history,
++ LRNG_GCD_WINDOW_SIZE);
++
++ if (!gcd)
++ gcd = 1;
++
++ /*
++ * Ensure that we have variations in the time stamp below the
++ * given value. This is just a safety measure to prevent the GCD
++ * becoming too large.
++ */
++ if (gcd >= 1000) {
++ pr_warn("calculated GCD is larger than expected: %u\n",
++ gcd);
++ gcd = 1000;
++ }
++
++ /* Adjust all deltas by the observed (small) common factor. */
++ lrng_gcd_set(gcd);
++ atomic_set(&lrng_gcd_history_ptr, 0);
++ }
++}
++
++/* Return boolean whether LRNG identified presence of high-resolution timer */
++static bool lrng_pool_highres_timer(void)
++{
++ return lrng_irq_highres_timer;
++}
++
++/* Convert entropy in bits into number of IRQs with the same entropy content. */
++static inline u32 lrng_entropy_to_data(u32 entropy_bits)
++{
++ return ((entropy_bits * lrng_irq_entropy_bits) /
++ LRNG_DRNG_SECURITY_STRENGTH_BITS);
++}
++
++/* Convert number of IRQs into entropy value. */
++static inline u32 lrng_data_to_entropy(u32 irqnum)
++{
++ return ((irqnum * LRNG_DRNG_SECURITY_STRENGTH_BITS) /
++ lrng_irq_entropy_bits);
++}
++
++static inline bool lrng_pcpu_pool_online(int cpu)
++{
++ return per_cpu(lrng_pcpu_lock_init, cpu);
++}
++
++static void lrng_pcpu_check_compression_state(void)
++{
++ /* One pool must hold sufficient entropy for disabled compression */
++ if (!lrng_pcpu_continuous_compression) {
++ u32 max_ent = min_t(u32, lrng_get_digestsize(),
++ lrng_data_to_entropy(LRNG_DATA_NUM_VALUES));
++ if (max_ent < lrng_security_strength()) {
++ pr_warn("Force continuous compression operation to ensure LRNG can hold enough entropy\n");
++ lrng_pcpu_continuous_compression = true;
++ }
++ }
++}
++
++static int __init lrng_init_time_source(void)
++{
++ /* Set a minimum number of interrupts that must be collected */
++ irq_entropy = max_t(u32, LRNG_IRQ_ENTROPY_BITS, irq_entropy);
++
++ if ((random_get_entropy() & LRNG_DATA_SLOTSIZE_MASK) ||
++ (random_get_entropy() & LRNG_DATA_SLOTSIZE_MASK)) {
++ /*
++ * As the highres timer is identified here, previous interrupts
++ * obtained during boot time are treated like a lowres-timer
++ * would have been present.
++ */
++ lrng_irq_highres_timer = true;
++ lrng_irq_entropy_bits = irq_entropy;
++ } else {
++ u32 new_entropy = irq_entropy * LRNG_IRQ_OVERSAMPLING_FACTOR;
++
++ lrng_health_disable();
++ lrng_irq_highres_timer = false;
++ lrng_irq_entropy_bits = (irq_entropy < new_entropy) ?
++ new_entropy : irq_entropy;
++ pr_warn("operating without high-resolution timer and applying IRQ oversampling factor %u\n",
++ LRNG_IRQ_OVERSAMPLING_FACTOR);
++ lrng_pcpu_check_compression_state();
++ }
++ mb();
++
++ return 0;
++}
++core_initcall(lrng_init_time_source);
++
++/*
++ * Reset all per-CPU pools - reset entropy estimator but leave the pool data
++ * that may or may not have entropy unchanged.
++ */
++void lrng_pcpu_reset(void)
++{
++ int cpu;
++
++ /* Trigger GCD calculation anew. */
++ _lrng_gcd_set(0);
++
++ for_each_online_cpu(cpu)
++ atomic_set(per_cpu_ptr(&lrng_pcpu_array_irqs, cpu), 0);
++}
++
++u32 lrng_pcpu_avail_pool_size(void)
++{
++ u32 max_size = 0, max_pool = lrng_get_digestsize();
++ int cpu;
++
++ if (!lrng_pcpu_continuous_compression)
++ max_pool = min_t(u32, max_pool, LRNG_DATA_NUM_VALUES);
++
++ for_each_online_cpu(cpu) {
++ if (lrng_pcpu_pool_online(cpu))
++ max_size += max_pool;
++ }
++
++ return max_size;
++}
++
++/* Return entropy of unused IRQs present in all per-CPU pools. */
++u32 lrng_pcpu_avail_entropy(void)
++{
++ u32 digestsize_irqs, irq = 0;
++ int cpu;
++
++ /* Obtain the cap of maximum numbers of IRQs we count */
++ digestsize_irqs = lrng_entropy_to_data(lrng_get_digestsize());
++ if (!lrng_pcpu_continuous_compression) {
++ /* Cap to max. number of IRQs the array can hold */
++ digestsize_irqs = min_t(u32, digestsize_irqs,
++ LRNG_DATA_NUM_VALUES);
++ }
++
++ for_each_online_cpu(cpu) {
++ if (!lrng_pcpu_pool_online(cpu))
++ continue;
++ irq += min_t(u32, digestsize_irqs,
++ atomic_read_u32(per_cpu_ptr(&lrng_pcpu_array_irqs,
++ cpu)));
++ }
++
++ /* Consider oversampling rate */
++ return lrng_reduce_by_osr(lrng_data_to_entropy(irq));
++}
++
++/*
++ * Trigger a switch of the hash implementation for the per-CPU pool.
++ *
++ * For each per-CPU pool, obtain the message digest with the old hash
++ * implementation, initialize the per-CPU pool again with the new hash
++ * implementation and inject the message digest into the new state.
++ *
++ * Assumption: the caller must guarantee that the new_cb is available during the
++ * entire operation (e.g. it must hold the lock against pointer updating).
++ */
++int lrng_pcpu_switch_hash(int node,
++ const struct lrng_crypto_cb *new_cb, void *new_hash,
++ const struct lrng_crypto_cb *old_cb)
++{
++ u8 digest[LRNG_MAX_DIGESTSIZE];
++ u32 digestsize_irqs, found_irqs;
++ int ret = 0, cpu;
++
++ if (!IS_ENABLED(CONFIG_LRNG_DRNG_SWITCH))
++ return -EOPNOTSUPP;
++
++ for_each_online_cpu(cpu) {
++ struct shash_desc *pcpu_shash;
++
++ /*
++ * Only switch the per-CPU pools for the current node because
++ * the crypto_cb only applies NUMA-node-wide.
++ */
++ if (cpu_to_node(cpu) != node || !lrng_pcpu_pool_online(cpu))
++ continue;
++
++ pcpu_shash = (struct shash_desc *)per_cpu_ptr(lrng_pcpu_pool,
++ cpu);
++
++ digestsize_irqs = old_cb->lrng_hash_digestsize(pcpu_shash);
++ digestsize_irqs = lrng_entropy_to_data(digestsize_irqs << 3);
++
++ if (pcpu_shash->tfm == new_hash)
++ continue;
++
++ /* Get the per-CPU pool hash with old digest ... */
++ ret = old_cb->lrng_hash_final(pcpu_shash, digest) ?:
++ /* ... re-initialize the hash with the new digest ... */
++ new_cb->lrng_hash_init(pcpu_shash, new_hash) ?:
++ /*
++ * ... feed the old hash into the new state. We may feed
++ * uninitialized memory into the new state, but this is
++ * considered no issue and even good as we have some more
++ * uncertainty here.
++ */
++ new_cb->lrng_hash_update(pcpu_shash, digest,
++ sizeof(digest));
++ if (ret)
++ goto out;
++
++ /*
++ * In case the new digest is larger than the old one, cap
++ * the available entropy to the old message digest used to
++ * process the existing data.
++ */
++ found_irqs = atomic_xchg_relaxed(
++ per_cpu_ptr(&lrng_pcpu_array_irqs, cpu), 0);
++ found_irqs = min_t(u32, found_irqs, digestsize_irqs);
++ atomic_add_return_relaxed(found_irqs,
++ per_cpu_ptr(&lrng_pcpu_array_irqs, cpu));
++
++ pr_debug("Re-initialize per-CPU entropy pool for CPU %d on NUMA node %d with hash %s\n",
++ cpu, node, new_cb->lrng_hash_name());
++ }
++
++out:
++ memzero_explicit(digest, sizeof(digest));
++ return ret;
++}
++
++/*
++ * When reading the per-CPU message digest, make sure we use the crypto
++ * callbacks defined for the NUMA node the per-CPU pool is defined for because
++ * the LRNG crypto switch support is only atomic per NUMA node.
++ */
++static inline u32
++lrng_pcpu_pool_hash_one(const struct lrng_crypto_cb *pcpu_crypto_cb,
++ void *pcpu_hash, int cpu, u8 *digest, u32 *digestsize)
++{
++ struct shash_desc *pcpu_shash =
++ (struct shash_desc *)per_cpu_ptr(lrng_pcpu_pool, cpu);
++ spinlock_t *lock = per_cpu_ptr(&lrng_pcpu_lock, cpu);
++ unsigned long flags;
++ u32 digestsize_irqs, found_irqs;
++
++ /* Lock guarding against reading / writing to per-CPU pool */
++ spin_lock_irqsave(lock, flags);
++
++ *digestsize = pcpu_crypto_cb->lrng_hash_digestsize(pcpu_hash);
++ digestsize_irqs = lrng_entropy_to_data(*digestsize << 3);
++
++ /* Obtain entropy statement like for the entropy pool */
++ found_irqs = atomic_xchg_relaxed(
++ per_cpu_ptr(&lrng_pcpu_array_irqs, cpu), 0);
++ /* Cap to maximum amount of data we can hold in hash */
++ found_irqs = min_t(u32, found_irqs, digestsize_irqs);
++
++ /* Cap to maximum amount of data we can hold in array */
++ if (!lrng_pcpu_continuous_compression)
++ found_irqs = min_t(u32, found_irqs, LRNG_DATA_NUM_VALUES);
++
++ /* Store all not-yet compressed data in data array into hash, ... */
++ if (pcpu_crypto_cb->lrng_hash_update(pcpu_shash,
++ (u8 *)per_cpu_ptr(lrng_pcpu_array, cpu),
++ LRNG_DATA_ARRAY_SIZE * sizeof(u32)) ?:
++ /* ... get the per-CPU pool digest, ... */
++ pcpu_crypto_cb->lrng_hash_final(pcpu_shash, digest) ?:
++ /* ... re-initialize the hash, ... */
++ pcpu_crypto_cb->lrng_hash_init(pcpu_shash, pcpu_hash) ?:
++ /* ... feed the old hash into the new state. */
++ pcpu_crypto_cb->lrng_hash_update(pcpu_shash, digest, *digestsize))
++ found_irqs = 0;
++
++ spin_unlock_irqrestore(lock, flags);
++ return found_irqs;
++}
++
++/*
++ * Hash all per-CPU pools and return the digest to be used as seed data for
++ * seeding a DRNG. The caller must guarantee backtracking resistance.
++ * The function will only copy as much data as entropy is available into the
++ * caller-provided output buffer.
++ *
++ * This function handles the translation from the number of received interrupts
++ * into an entropy statement. The conversion depends on LRNG_IRQ_ENTROPY_BITS
++ * which defines how many interrupts must be received to obtain 256 bits of
++ * entropy. With this value, the function lrng_data_to_entropy converts a given
++ * data size (received interrupts, requested amount of data, etc.) into an
++ * entropy statement. lrng_entropy_to_data does the reverse.
++ *
++ * @outbuf: buffer to store data in with size requested_bits
++ * @requested_bits: Requested amount of entropy
++ * @fully_seeded: indicator whether LRNG is fully seeded
++ * @return: amount of entropy in outbuf in bits.
++ */
++u32 lrng_pcpu_pool_hash(u8 *outbuf, u32 requested_bits, bool fully_seeded)
++{
++ SHASH_DESC_ON_STACK(shash, NULL);
++ const struct lrng_crypto_cb *crypto_cb;
++ struct lrng_drng **lrng_drng = lrng_drng_instances();
++ struct lrng_drng *drng = lrng_drng_init_instance();
++ u8 digest[LRNG_MAX_DIGESTSIZE];
++ unsigned long flags, flags2;
++ u32 found_irqs, collected_irqs = 0, collected_ent_bits, requested_irqs,
++ returned_ent_bits;
++ int ret, cpu;
++ void *hash;
++
++ /* Lock guarding replacement of per-NUMA hash */
++ lrng_hash_lock(drng, &flags);
++
++ crypto_cb = drng->crypto_cb;
++ hash = drng->hash;
++
++ /* The hash state of filled with all per-CPU pool hashes. */
++ ret = crypto_cb->lrng_hash_init(shash, hash);
++ if (ret)
++ goto err;
++
++ requested_irqs = lrng_entropy_to_data(requested_bits +
++ lrng_compress_osr());
++
++ /*
++ * Harvest entropy from each per-CPU hash state - even though we may
++ * have collected sufficient entropy, we will hash all per-CPU pools.
++ */
++ for_each_online_cpu(cpu) {
++ struct lrng_drng *pcpu_drng = drng;
++ u32 digestsize, pcpu_unused_irqs = 0;
++ int node = cpu_to_node(cpu);
++
++ /* If pool is not online, then no entropy is present. */
++ if (!lrng_pcpu_pool_online(cpu))
++ continue;
++
++ if (lrng_drng && lrng_drng[node])
++ pcpu_drng = lrng_drng[node];
++
++ if (pcpu_drng == drng) {
++ found_irqs = lrng_pcpu_pool_hash_one(crypto_cb, hash,
++ cpu, digest,
++ &digestsize);
++ } else {
++ lrng_hash_lock(pcpu_drng, &flags2);
++ found_irqs =
++ lrng_pcpu_pool_hash_one(pcpu_drng->crypto_cb,
++ pcpu_drng->hash, cpu,
++ digest, &digestsize);
++ lrng_hash_unlock(pcpu_drng, flags2);
++ }
++
++ /* Inject the digest into the state of all per-CPU pools */
++ ret = crypto_cb->lrng_hash_update(shash, digest, digestsize);
++ if (ret)
++ goto err;
++
++ collected_irqs += found_irqs;
++ if (collected_irqs > requested_irqs) {
++ pcpu_unused_irqs = collected_irqs - requested_irqs;
++ atomic_add_return_relaxed(pcpu_unused_irqs,
++ per_cpu_ptr(&lrng_pcpu_array_irqs, cpu));
++ collected_irqs = requested_irqs;
++ }
++ pr_debug("%u interrupts used from entropy pool of CPU %d, %u interrupts remain unused\n",
++ found_irqs - pcpu_unused_irqs, cpu, pcpu_unused_irqs);
++ }
++
++ ret = crypto_cb->lrng_hash_final(shash, digest);
++ if (ret)
++ goto err;
++
++ collected_ent_bits = lrng_data_to_entropy(collected_irqs);
++ /* Cap to maximum entropy that can ever be generated with given hash */
++ collected_ent_bits = min_t(u32, collected_ent_bits,
++ crypto_cb->lrng_hash_digestsize(hash) << 3);
++ /* Apply oversampling: discount requested oversampling rate */
++ returned_ent_bits = lrng_reduce_by_osr(collected_ent_bits);
++
++ pr_debug("obtained %u bits by collecting %u bits of entropy from entropy pool noise source\n",
++ returned_ent_bits, collected_ent_bits);
++
++ /*
++ * Truncate to available entropy as implicitly allowed by SP800-90B
++ * section 3.1.5.1.1 table 1 which awards truncated hashes full
++ * entropy.
++ *
++ * During boot time, we read requested_bits data with
++ * returned_ent_bits entropy. In case our conservative entropy
++ * estimate underestimates the available entropy we can transport as
++ * much available entropy as possible.
++ */
++ memcpy(outbuf, digest, fully_seeded ? returned_ent_bits >> 3 :
++ requested_bits >> 3);
++
++out:
++ crypto_cb->lrng_hash_desc_zero(shash);
++ lrng_hash_unlock(drng, flags);
++ memzero_explicit(digest, sizeof(digest));
++ return returned_ent_bits;
++
++err:
++ returned_ent_bits = 0;
++ goto out;
++}
++
++/* Compress the lrng_pcpu_array array into lrng_pcpu_pool */
++static inline void lrng_pcpu_array_compress(void)
++{
++ struct shash_desc *shash =
++ (struct shash_desc *)this_cpu_ptr(lrng_pcpu_pool);
++ struct lrng_drng **lrng_drng = lrng_drng_instances();
++ struct lrng_drng *drng = lrng_drng_init_instance();
++ const struct lrng_crypto_cb *crypto_cb;
++ spinlock_t *lock = this_cpu_ptr(&lrng_pcpu_lock);
++ unsigned long flags, flags2;
++ int node = numa_node_id();
++ void *hash;
++ bool init = false;
++
++ /* Get NUMA-node local hash instance */
++ if (lrng_drng && lrng_drng[node])
++ drng = lrng_drng[node];
++
++ lrng_hash_lock(drng, &flags);
++ crypto_cb = drng->crypto_cb;
++ hash = drng->hash;
++
++ if (unlikely(!this_cpu_read(lrng_pcpu_lock_init))) {
++ init = true;
++ spin_lock_init(lock);
++ this_cpu_write(lrng_pcpu_lock_init, true);
++ pr_debug("Initializing per-CPU entropy pool for CPU %d on NUMA node %d with hash %s\n",
++ raw_smp_processor_id(), node,
++ crypto_cb->lrng_hash_name());
++ }
++
++ spin_lock_irqsave(lock, flags2);
++
++ if (unlikely(init) && crypto_cb->lrng_hash_init(shash, hash)) {
++ this_cpu_write(lrng_pcpu_lock_init, false);
++ pr_warn("Initialization of hash failed\n");
++ } else if (lrng_pcpu_continuous_compression) {
++ /* Add entire per-CPU data array content into entropy pool. */
++ if (crypto_cb->lrng_hash_update(shash,
++ (u8 *)this_cpu_ptr(lrng_pcpu_array),
++ LRNG_DATA_ARRAY_SIZE * sizeof(u32)))
++ pr_warn_ratelimited("Hashing of entropy data failed\n");
++ }
++
++ spin_unlock_irqrestore(lock, flags2);
++ lrng_hash_unlock(drng, flags);
++}
++
++/* Compress data array into hash */
++static inline void lrng_pcpu_array_to_hash(u32 ptr)
++{
++ u32 *array = this_cpu_ptr(lrng_pcpu_array);
++
++ /*
++ * During boot time the hash operation is triggered more often than
++ * during regular operation.
++ */
++ if (unlikely(!lrng_state_fully_seeded())) {
++ if ((ptr & 31) && (ptr < LRNG_DATA_WORD_MASK))
++ return;
++ } else if (ptr < LRNG_DATA_WORD_MASK) {
++ return;
++ }
++
++ if (lrng_raw_array_entropy_store(*array)) {
++ u32 i;
++
++ /*
++ * If we fed even a part of the array to external analysis, we
++ * mark that the entire array and the per-CPU pool to have no
++ * entropy. This is due to the non-IID property of the data as
++ * we do not fully know whether the existing dependencies
++ * diminish the entropy beyond to what we expect it has.
++ */
++ atomic_set(this_cpu_ptr(&lrng_pcpu_array_irqs), 0);
++
++ for (i = 1; i < LRNG_DATA_ARRAY_SIZE; i++)
++ lrng_raw_array_entropy_store(*(array + i));
++ } else {
++ lrng_pcpu_array_compress();
++ /* Ping pool handler about received entropy */
++ lrng_pool_add_entropy();
++ }
++}
++
++/*
++ * Concatenate full 32 bit word at the end of time array even when current
++ * ptr is not aligned to sizeof(data).
++ */
++static inline void _lrng_pcpu_array_add_u32(u32 data)
++{
++ /* Increment pointer by number of slots taken for input value */
++ u32 pre_ptr, mask, ptr = this_cpu_add_return(lrng_pcpu_array_ptr,
++ LRNG_DATA_SLOTS_PER_UINT);
++ unsigned int pre_array;
++
++ /*
++ * This function injects a unit into the array - guarantee that
++ * array unit size is equal to data type of input data.
++ */
++ BUILD_BUG_ON(LRNG_DATA_ARRAY_MEMBER_BITS != (sizeof(data) << 3));
++
++ /*
++ * The following logic requires at least two units holding
++ * the data as otherwise the pointer would immediately wrap when
++ * injection an u32 word.
++ */
++ BUILD_BUG_ON(LRNG_DATA_NUM_VALUES <= LRNG_DATA_SLOTS_PER_UINT);
++
++ lrng_pcpu_split_u32(&ptr, &pre_ptr, &mask);
++
++ /* MSB of data go into previous unit */
++ pre_array = lrng_data_idx2array(pre_ptr);
++ /* zeroization of slot to ensure the following OR adds the data */
++ this_cpu_and(lrng_pcpu_array[pre_array], ~(0xffffffff & ~mask));
++ this_cpu_or(lrng_pcpu_array[pre_array], data & ~mask);
++
++ /* Invoke compression as we just filled data array completely */
++ if (unlikely(pre_ptr > ptr))
++ lrng_pcpu_array_to_hash(LRNG_DATA_WORD_MASK);
++
++ /* LSB of data go into current unit */
++ this_cpu_write(lrng_pcpu_array[lrng_data_idx2array(ptr)],
++ data & mask);
++
++ if (likely(pre_ptr <= ptr))
++ lrng_pcpu_array_to_hash(ptr);
++}
++
++/* Concatenate a 32-bit word at the end of the per-CPU array */
++void lrng_pcpu_array_add_u32(u32 data)
++{
++ /*
++ * Disregard entropy-less data without continuous compression to
++ * avoid it overwriting data with entropy when array ptr wraps.
++ */
++ if (lrng_pcpu_continuous_compression)
++ _lrng_pcpu_array_add_u32(data);
++}
++
++/* Concatenate data of max LRNG_DATA_SLOTSIZE_MASK at the end of time array */
++static inline void lrng_pcpu_array_add_slot(u32 data)
++{
++ /* Get slot */
++ u32 ptr = this_cpu_inc_return(lrng_pcpu_array_ptr) &
++ LRNG_DATA_WORD_MASK;
++ unsigned int array = lrng_data_idx2array(ptr);
++ unsigned int slot = lrng_data_idx2slot(ptr);
++
++ BUILD_BUG_ON(LRNG_DATA_ARRAY_MEMBER_BITS % LRNG_DATA_SLOTSIZE_BITS);
++ /* Ensure consistency of values */
++ BUILD_BUG_ON(LRNG_DATA_ARRAY_MEMBER_BITS !=
++ sizeof(lrng_pcpu_array[0]) << 3);
++
++ /* zeroization of slot to ensure the following OR adds the data */
++ this_cpu_and(lrng_pcpu_array[array],
++ ~(lrng_data_slot_val(0xffffffff & LRNG_DATA_SLOTSIZE_MASK,
++ slot)));
++ /* Store data into slot */
++ this_cpu_or(lrng_pcpu_array[array], lrng_data_slot_val(data, slot));
++
++ lrng_pcpu_array_to_hash(ptr);
++}
++
++static inline void
++lrng_time_process_common(u32 time, void(*add_time)(u32 data))
++{
++ enum lrng_health_res health_test;
++
++ if (lrng_raw_hires_entropy_store(time))
++ return;
++
++ health_test = lrng_health_test(time);
++ if (health_test > lrng_health_fail_use)
++ return;
++
++ if (health_test == lrng_health_pass)
++ atomic_inc_return(this_cpu_ptr(&lrng_pcpu_array_irqs));
++
++ add_time(time);
++}
++
++/*
++ * Batching up of entropy in per-CPU array before injecting into entropy pool.
++ */
++static inline void lrng_time_process(void)
++{
++ u32 now_time = random_get_entropy();
++
++ if (unlikely(!lrng_gcd_tested())) {
++ /* When GCD is unknown, we process the full time stamp */
++ lrng_time_process_common(now_time, _lrng_pcpu_array_add_u32);
++ lrng_gcd_add_value(now_time);
++ } else {
++ /* GCD is known and applied */
++ lrng_time_process_common((now_time / lrng_gcd_timer) &
++ LRNG_DATA_SLOTSIZE_MASK,
++ lrng_pcpu_array_add_slot);
++ }
++
++ lrng_perf_time(now_time);
++}
++
++/* Hot code path - Callback for interrupt handler */
++void add_interrupt_randomness(int irq, int irq_flg)
++{
++ if (lrng_pool_highres_timer()) {
++ lrng_time_process();
++ } else {
++ struct pt_regs *regs = get_irq_regs();
++ static atomic_t reg_idx = ATOMIC_INIT(0);
++ u64 ip;
++ u32 tmp;
++
++ if (regs) {
++ u32 *ptr = (u32 *)regs;
++ int reg_ptr = atomic_add_return_relaxed(1, &reg_idx);
++ size_t n = (sizeof(struct pt_regs) / sizeof(u32));
++
++ ip = instruction_pointer(regs);
++ tmp = *(ptr + (reg_ptr % n));
++ tmp = lrng_raw_regs_entropy_store(tmp) ? 0 : tmp;
++ _lrng_pcpu_array_add_u32(tmp);
++ } else {
++ ip = _RET_IP_;
++ }
++
++ lrng_time_process();
++
++ /*
++ * The XOR operation combining the different values is not
++ * considered to destroy entropy since the entirety of all
++ * processed values delivers the entropy (and not each
++ * value separately of the other values).
++ */
++ tmp = lrng_raw_jiffies_entropy_store(jiffies) ? 0 : jiffies;
++ tmp ^= lrng_raw_irq_entropy_store(irq) ? 0 : irq;
++ tmp ^= lrng_raw_irqflags_entropy_store(irq_flg) ? 0 : irq_flg;
++ tmp ^= lrng_raw_retip_entropy_store(ip) ? 0 : ip;
++ tmp ^= ip >> 32;
++ _lrng_pcpu_array_add_u32(tmp);
++ }
++}
++EXPORT_SYMBOL(add_interrupt_randomness);
++
++void lrng_irq_es_state(unsigned char *buf, size_t buflen)
++{
++ const struct lrng_drng *lrng_drng_init = lrng_drng_init_instance();
++
++ /* Assume the lrng_drng_init lock is taken by caller */
++ snprintf(buf, buflen,
++ "IRQ ES properties:\n"
++ " Hash for operating entropy pool: %s\n"
++ " per-CPU interrupt collection size: %u\n"
++ " Standards compliance: %s\n"
++ " High-resolution timer: %s\n"
++ " Continuous compression: %s\n",
++ lrng_drng_init->crypto_cb->lrng_hash_name(),
++ LRNG_DATA_NUM_VALUES,
++ lrng_sp80090b_compliant() ? "SP800-90B " : "",
++ lrng_pool_highres_timer() ? "true" : "false",
++ lrng_pcpu_continuous_compression ? "true" : "false");
++}
+diff -urN linux-5.15/drivers/char/lrng/lrng_es_irq.h linux-5.15-lrng/drivers/char/lrng/lrng_es_irq.h
+--- linux-5.15/drivers/char/lrng/lrng_es_irq.h 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_es_irq.h 2021-11-29 12:36:57.773279152 +1100
+@@ -0,0 +1,71 @@
++/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
++/*
++ * LRNG Slow Noise Source: Time stamp array handling
++ *
++ * Copyright (C) 2016 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++/*
++ * To limit the impact on the interrupt handling, the LRNG concatenates
++ * entropic LSB parts of the time stamps in a per-CPU array and only
++ * injects them into the entropy pool when the array is full.
++ */
++
++/* Store multiple integers in one u32 */
++#define LRNG_DATA_SLOTSIZE_BITS (8)
++#define LRNG_DATA_SLOTSIZE_MASK ((1 << LRNG_DATA_SLOTSIZE_BITS) - 1)
++#define LRNG_DATA_ARRAY_MEMBER_BITS (4 << 3) /* ((sizeof(u32)) << 3) */
++#define LRNG_DATA_SLOTS_PER_UINT (LRNG_DATA_ARRAY_MEMBER_BITS / \
++ LRNG_DATA_SLOTSIZE_BITS)
++
++/*
++ * Number of time values to store in the array - in small environments
++ * only one atomic_t variable per CPU is used.
++ */
++#define LRNG_DATA_NUM_VALUES (CONFIG_LRNG_COLLECTION_SIZE)
++/* Mask of LSB of time stamp to store */
++#define LRNG_DATA_WORD_MASK (LRNG_DATA_NUM_VALUES - 1)
++
++#define LRNG_DATA_SLOTS_MASK (LRNG_DATA_SLOTS_PER_UINT - 1)
++#define LRNG_DATA_ARRAY_SIZE (LRNG_DATA_NUM_VALUES / \
++ LRNG_DATA_SLOTS_PER_UINT)
++
++/* Starting bit index of slot */
++static inline unsigned int lrng_data_slot2bitindex(unsigned int slot)
++{
++ return (LRNG_DATA_SLOTSIZE_BITS * slot);
++}
++
++/* Convert index into the array index */
++static inline unsigned int lrng_data_idx2array(unsigned int idx)
++{
++ return idx / LRNG_DATA_SLOTS_PER_UINT;
++}
++
++/* Convert index into the slot of a given array index */
++static inline unsigned int lrng_data_idx2slot(unsigned int idx)
++{
++ return idx & LRNG_DATA_SLOTS_MASK;
++}
++
++/* Convert value into slot value */
++static inline unsigned int lrng_data_slot_val(unsigned int val,
++ unsigned int slot)
++{
++ return val << lrng_data_slot2bitindex(slot);
++}
++
++/*
++ * Return the pointers for the previous and current units to inject a u32 into.
++ * Also return the mask which the u32 word is to be processed.
++ */
++static inline void lrng_pcpu_split_u32(u32 *ptr, u32 *pre_ptr, u32 *mask)
++{
++ /* ptr to previous unit */
++ *pre_ptr = (*ptr - LRNG_DATA_SLOTS_PER_UINT) & LRNG_DATA_WORD_MASK;
++ *ptr &= LRNG_DATA_WORD_MASK;
++
++ /* mask to split data into the two parts for the two units */
++ *mask = ((1 << (*pre_ptr & (LRNG_DATA_SLOTS_PER_UINT - 1)) *
++ LRNG_DATA_SLOTSIZE_BITS)) - 1;
++}
+diff -urN linux-5.15/drivers/char/lrng/lrng_es_jent.c linux-5.15-lrng/drivers/char/lrng/lrng_es_jent.c
+--- linux-5.15/drivers/char/lrng/lrng_es_jent.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_es_jent.c 2021-11-29 12:38:04.443278898 +1100
+@@ -0,0 +1,97 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * LRNG Fast Entropy Source: Jitter RNG
++ *
++ * Copyright (C) 2016 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <linux/types.h>
++#include <crypto/internal/jitterentropy.h>
++
++#include "lrng_internal.h"
++
++/*
++ * Estimated entropy of data is a 16th of LRNG_DRNG_SECURITY_STRENGTH_BITS.
++ * Albeit a full entropy assessment is provided for the noise source indicating
++ * that it provides high entropy rates and considering that it deactivates
++ * when it detects insufficient hardware, the chosen under estimation of
++ * entropy is considered to be acceptable to all reviewers.
++ */
++static u32 jitterrng = CONFIG_LRNG_JENT_ENTROPY_RATE;
++#ifdef CONFIG_LRNG_RUNTIME_ES_CONFIG
++module_param(jitterrng, uint, 0644);
++MODULE_PARM_DESC(jitterrng, "Entropy in bits of 256 data bits from Jitter RNG noise source");
++#endif
++
++static bool lrng_jent_initialized = false;
++static struct rand_data *lrng_jent_state;
++
++static int __init lrng_jent_initialize(void)
++{
++ /* Initialize the Jitter RNG after the clocksources are initialized. */
++ if (jent_entropy_init() ||
++ (lrng_jent_state = jent_entropy_collector_alloc(1, 0)) == NULL) {
++ jitterrng = 0;
++ pr_info("Jitter RNG unusable on current system\n");
++ return 0;
++ }
++ lrng_jent_initialized = true;
++ lrng_pool_add_entropy();
++ pr_debug("Jitter RNG working on current system\n");
++
++ return 0;
++}
++device_initcall(lrng_jent_initialize);
++
++/*
++ * lrng_get_jent() - Get Jitter RNG entropy
++ *
++ * @outbuf: buffer to store entropy
++ * @outbuflen: length of buffer
++ *
++ * Return:
++ * * > 0 on success where value provides the added entropy in bits
++ * * 0 if no fast source was available
++ */
++u32 lrng_get_jent(u8 *outbuf, u32 requested_bits)
++{
++ int ret;
++ u32 ent_bits = lrng_jent_entropylevel(requested_bits);
++ unsigned long flags;
++ static DEFINE_SPINLOCK(lrng_jent_lock);
++
++ spin_lock_irqsave(&lrng_jent_lock, flags);
++
++ if (!lrng_jent_initialized) {
++ spin_unlock_irqrestore(&lrng_jent_lock, flags);
++ return 0;
++ }
++
++ ret = jent_read_entropy(lrng_jent_state, outbuf, requested_bits >> 3);
++ spin_unlock_irqrestore(&lrng_jent_lock, flags);
++
++ if (ret) {
++ pr_debug("Jitter RNG failed with %d\n", ret);
++ return 0;
++ }
++
++ pr_debug("obtained %u bits of entropy from Jitter RNG noise source\n",
++ ent_bits);
++
++ return ent_bits;
++}
++
++u32 lrng_jent_entropylevel(u32 requested_bits)
++{
++ return lrng_fast_noise_entropylevel((lrng_jent_initialized) ?
++ jitterrng : 0, requested_bits);
++}
++
++void lrng_jent_es_state(unsigned char *buf, size_t buflen)
++{
++ snprintf(buf, buflen,
++ "JitterRNG ES properties:\n"
++ " Enabled: %s\n", lrng_jent_initialized ? "true" : "false");
++}
+diff -urN linux-5.15/drivers/char/lrng/lrng_es_mgr.c linux-5.15-lrng/drivers/char/lrng/lrng_es_mgr.c
+--- linux-5.15/drivers/char/lrng/lrng_es_mgr.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_es_mgr.c 2021-11-29 12:36:52.113279174 +1100
+@@ -0,0 +1,373 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * LRNG Entropy sources management
++ *
++ * Copyright (C) 2016 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <asm/irq_regs.h>
++#include <linux/percpu.h>
++#include <linux/random.h>
++#include <linux/utsname.h>
++#include <linux/workqueue.h>
++
++#include "lrng_internal.h"
++
++struct lrng_state {
++ bool can_invalidate; /* Can invalidate batched entropy? */
++ bool perform_seedwork; /* Can seed work be performed? */
++ bool lrng_operational; /* Is DRNG operational? */
++ bool lrng_fully_seeded; /* Is DRNG fully seeded? */
++ bool lrng_min_seeded; /* Is DRNG minimally seeded? */
++ bool all_online_numa_node_seeded;/* All NUMA DRNGs seeded? */
++
++ /*
++ * To ensure that external entropy providers cannot dominate the
++ * internal noise sources but yet cannot be dominated by internal
++ * noise sources, the following booleans are intended to allow
++ * external to provide seed once when a DRNG reseed occurs. This
++ * triggering of external noise source is performed even when the
++ * entropy pool has sufficient entropy.
++ */
++ bool lrng_seed_hw; /* Allow HW to provide seed */
++ bool lrng_seed_user; /* Allow user space to provide seed */
++
++ atomic_t boot_entropy_thresh; /* Reseed threshold */
++ atomic_t reseed_in_progress; /* Flag for on executing reseed */
++ struct work_struct lrng_seed_work; /* (re)seed work queue */
++};
++
++static struct lrng_state lrng_state = {
++ false, false, false, false, false, false, true, true,
++ .boot_entropy_thresh = ATOMIC_INIT(LRNG_INIT_ENTROPY_BITS),
++ .reseed_in_progress = ATOMIC_INIT(0),
++};
++
++/********************************** Helper ***********************************/
++
++/* External entropy provider is allowed to provide seed data */
++bool lrng_state_exseed_allow(enum lrng_external_noise_source source)
++{
++ if (source == lrng_noise_source_hw)
++ return lrng_state.lrng_seed_hw;
++ return lrng_state.lrng_seed_user;
++}
++
++/* Enable / disable external entropy provider to furnish seed */
++void lrng_state_exseed_set(enum lrng_external_noise_source source, bool type)
++{
++ if (source == lrng_noise_source_hw)
++ lrng_state.lrng_seed_hw = type;
++ else
++ lrng_state.lrng_seed_user = type;
++}
++
++static inline void lrng_state_exseed_allow_all(void)
++{
++ lrng_state_exseed_set(lrng_noise_source_hw, true);
++ lrng_state_exseed_set(lrng_noise_source_user, true);
++}
++
++/*
++ * Reading of the LRNG pool is only allowed by one caller. The reading is
++ * only performed to (re)seed DRNGs. Thus, if this "lock" is already taken,
++ * the reseeding operation is in progress. The caller is not intended to wait
++ * but continue with its other operation.
++ */
++int lrng_pool_trylock(void)
++{
++ return atomic_cmpxchg(&lrng_state.reseed_in_progress, 0, 1);
++}
++
++void lrng_pool_unlock(void)
++{
++ atomic_set(&lrng_state.reseed_in_progress, 0);
++}
++
++/* Set new entropy threshold for reseeding during boot */
++void lrng_set_entropy_thresh(u32 new_entropy_bits)
++{
++ atomic_set(&lrng_state.boot_entropy_thresh, new_entropy_bits);
++}
++
++/*
++ * Reset LRNG state - the entropy counters are reset, but the data that may
++ * or may not have entropy remains in the pools as this data will not hurt.
++ */
++void lrng_reset_state(void)
++{
++ lrng_pool_set_entropy(0);
++ lrng_pcpu_reset();
++ lrng_state.lrng_operational = false;
++ lrng_state.lrng_fully_seeded = false;
++ lrng_state.lrng_min_seeded = false;
++ lrng_state.all_online_numa_node_seeded = false;
++ pr_debug("reset LRNG\n");
++}
++
++/* Set flag that all DRNGs are fully seeded */
++void lrng_pool_all_numa_nodes_seeded(bool set)
++{
++ lrng_state.all_online_numa_node_seeded = set;
++}
++
++/* Return boolean whether LRNG reached minimally seed level */
++bool lrng_state_min_seeded(void)
++{
++ return lrng_state.lrng_min_seeded;
++}
++
++/* Return boolean whether LRNG reached fully seed level */
++bool lrng_state_fully_seeded(void)
++{
++ return lrng_state.lrng_fully_seeded;
++}
++
++/* Return boolean whether LRNG is considered fully operational */
++bool lrng_state_operational(void)
++{
++ return lrng_state.lrng_operational;
++}
++
++/* Policy to check whether entropy buffer contains full seeded entropy */
++bool lrng_fully_seeded(bool fully_seeded, struct entropy_buf *eb)
++{
++ return ((eb->a_bits + eb->b_bits + eb->c_bits + eb->d_bits) >=
++ lrng_get_seed_entropy_osr(fully_seeded));
++}
++
++/* Mark one DRNG as not fully seeded */
++void lrng_unset_fully_seeded(struct lrng_drng *drng)
++{
++ drng->fully_seeded = false;
++ lrng_pool_all_numa_nodes_seeded(false);
++
++ /*
++ * The init DRNG instance must always be fully seeded as this instance
++ * is the fall-back if any of the per-NUMA node DRNG instances is
++ * insufficiently seeded. Thus, we mark the entire LRNG as
++ * non-operational if the initial DRNG becomes not fully seeded.
++ */
++ if (drng == lrng_drng_init_instance() && lrng_state_operational()) {
++ pr_debug("LRNG set to non-operational\n");
++ lrng_state.lrng_operational = false;
++ lrng_state.lrng_fully_seeded = false;
++
++ /* If sufficient entropy is available, reseed now. */
++ lrng_pool_add_entropy();
++ }
++}
++
++/* Policy to enable LRNG operational mode */
++static inline void lrng_set_operational(u32 external_es)
++{
++ /* LRNG is operational if the initial DRNG is fully seeded ... */
++ if (lrng_state.lrng_fully_seeded &&
++ /* ... and either internal ES SP800-90B startup is complete ... */
++ (lrng_sp80090b_startup_complete() ||
++ /* ... or the external ES provided sufficient entropy. */
++ (lrng_get_seed_entropy_osr(lrng_state_fully_seeded()) <=
++ external_es))) {
++ lrng_state.lrng_operational = true;
++ lrng_process_ready_list();
++ lrng_init_wakeup();
++ pr_info("LRNG fully operational\n");
++ }
++}
++
++/* Available entropy in the entire LRNG considering all entropy sources */
++u32 lrng_avail_entropy(void)
++{
++ u32 ent_thresh = lrng_security_strength();
++
++ /*
++ * Apply oversampling during initialization according to SP800-90C as
++ * we request a larger buffer from the ES.
++ */
++ if (lrng_sp80090c_compliant() &&
++ !lrng_state.all_online_numa_node_seeded)
++ ent_thresh += CONFIG_LRNG_SEED_BUFFER_INIT_ADD_BITS;
++
++ return lrng_pcpu_avail_entropy() + lrng_avail_aux_entropy() +
++ lrng_archrandom_entropylevel(ent_thresh) +
++ lrng_jent_entropylevel(ent_thresh);
++}
++
++/*
++ * lrng_init_ops() - Set seed stages of LRNG
++ *
++ * Set the slow noise source reseed trigger threshold. The initial threshold
++ * is set to the minimum data size that can be read from the pool: a word. Upon
++ * reaching this value, the next seed threshold of 128 bits is set followed
++ * by 256 bits.
++ *
++ * @eb: buffer containing the size of entropy currently injected into DRNG
++ */
++void lrng_init_ops(struct entropy_buf *eb)
++{
++ struct lrng_state *state = &lrng_state;
++ u32 requested_bits, seed_bits, external_es;
++
++ if (state->lrng_operational)
++ return;
++
++ requested_bits = lrng_get_seed_entropy_osr(
++ state->all_online_numa_node_seeded);
++
++ /*
++ * Entropy provided by external entropy sources - if they provide
++ * the requested amount of entropy, unblock the interface.
++ */
++ external_es = eb->a_bits + eb->c_bits + eb->d_bits;
++ seed_bits = external_es + eb->b_bits;
++
++ /* DRNG is seeded with full security strength */
++ if (state->lrng_fully_seeded) {
++ lrng_set_operational(external_es);
++ lrng_set_entropy_thresh(requested_bits);
++ } else if (lrng_fully_seeded(state->all_online_numa_node_seeded, eb)) {
++ if (state->can_invalidate)
++ invalidate_batched_entropy();
++
++ state->lrng_fully_seeded = true;
++ lrng_set_operational(external_es);
++ state->lrng_min_seeded = true;
++ pr_info("LRNG fully seeded with %u bits of entropy\n",
++ seed_bits);
++ lrng_set_entropy_thresh(requested_bits);
++ } else if (!state->lrng_min_seeded) {
++
++ /* DRNG is seeded with at least 128 bits of entropy */
++ if (seed_bits >= LRNG_MIN_SEED_ENTROPY_BITS) {
++ if (state->can_invalidate)
++ invalidate_batched_entropy();
++
++ state->lrng_min_seeded = true;
++ pr_info("LRNG minimally seeded with %u bits of entropy\n",
++ seed_bits);
++ lrng_set_entropy_thresh(requested_bits);
++ lrng_init_wakeup();
++
++ /* DRNG is seeded with at least LRNG_INIT_ENTROPY_BITS bits */
++ } else if (seed_bits >= LRNG_INIT_ENTROPY_BITS) {
++ pr_info("LRNG initial entropy level %u bits of entropy\n",
++ seed_bits);
++ lrng_set_entropy_thresh(LRNG_MIN_SEED_ENTROPY_BITS);
++ }
++ }
++}
++
++int __init rand_initialize(void)
++{
++ struct seed {
++ ktime_t time;
++ unsigned long data[(LRNG_MAX_DIGESTSIZE /
++ sizeof(unsigned long))];
++ struct new_utsname utsname;
++ } seed __aligned(LRNG_KCAPI_ALIGN);
++ unsigned int i;
++
++ BUILD_BUG_ON(LRNG_MAX_DIGESTSIZE % sizeof(unsigned long));
++
++ seed.time = ktime_get_real();
++
++ for (i = 0; i < ARRAY_SIZE(seed.data); i++) {
++ if (!arch_get_random_seed_long_early(&(seed.data[i])) &&
++ !arch_get_random_long_early(&seed.data[i]))
++ seed.data[i] = random_get_entropy();
++ }
++ memcpy(&seed.utsname, utsname(), sizeof(*(utsname())));
++
++ lrng_pool_insert_aux((u8 *)&seed, sizeof(seed), 0);
++ memzero_explicit(&seed, sizeof(seed));
++
++ /* Initialize the seed work queue */
++ INIT_WORK(&lrng_state.lrng_seed_work, lrng_drng_seed_work);
++ lrng_state.perform_seedwork = true;
++
++ lrng_drngs_init_cc20(true);
++ invalidate_batched_entropy();
++
++ lrng_state.can_invalidate = true;
++
++ return 0;
++}
++
++/* Interface requesting a reseed of the DRNG */
++void lrng_pool_add_entropy(void)
++{
++ /*
++ * Once all DRNGs are fully seeded, the interrupt noise
++ * sources will not trigger any reseeding any more.
++ */
++ if (likely(lrng_state.all_online_numa_node_seeded))
++ return;
++
++ /* Only try to reseed if the DRNG is alive. */
++ if (!lrng_get_available())
++ return;
++
++ /* Only trigger the DRNG reseed if we have collected entropy. */
++ if (lrng_avail_entropy() <
++ atomic_read_u32(&lrng_state.boot_entropy_thresh))
++ return;
++
++ /* Ensure that the seeding only occurs once at any given time. */
++ if (lrng_pool_trylock())
++ return;
++
++ /* Seed the DRNG with any available noise. */
++ if (lrng_state.perform_seedwork)
++ schedule_work(&lrng_state.lrng_seed_work);
++ else
++ lrng_drng_seed_work(NULL);
++}
++
++/* Fill the seed buffer with data from the noise sources */
++void lrng_fill_seed_buffer(struct entropy_buf *entropy_buf, u32 requested_bits)
++{
++ struct lrng_state *state = &lrng_state;
++ u32 req_ent = lrng_sp80090c_compliant() ?
++ lrng_security_strength() : LRNG_MIN_SEED_ENTROPY_BITS;
++
++ /* Guarantee that requested bits is a multiple of bytes */
++ BUILD_BUG_ON(LRNG_DRNG_SECURITY_STRENGTH_BITS % 8);
++
++ /* always reseed the DRNG with the current time stamp */
++ entropy_buf->now = random_get_entropy();
++
++ /*
++ * Require at least 128 bits of entropy for any reseed. If the LRNG is
++ * operated SP800-90C compliant we want to comply with SP800-90A section
++ * 9.2 mandating that DRNG is reseeded with the security strength.
++ */
++ if (state->lrng_fully_seeded && (lrng_avail_entropy() < req_ent)) {
++ entropy_buf->a_bits = entropy_buf->b_bits = 0;
++ entropy_buf->c_bits = entropy_buf->d_bits = 0;
++ goto wakeup;
++ }
++
++ /* Concatenate the output of the entropy sources. */
++ entropy_buf->b_bits = lrng_pcpu_pool_hash(entropy_buf->b,
++ requested_bits,
++ state->lrng_fully_seeded);
++ entropy_buf->c_bits = lrng_get_arch(entropy_buf->c, requested_bits);
++ entropy_buf->d_bits = lrng_get_jent(entropy_buf->d, requested_bits);
++ lrng_get_backtrack_aux(entropy_buf, requested_bits);
++
++ /* allow external entropy provider to provide seed */
++ lrng_state_exseed_allow_all();
++
++wakeup:
++ /*
++ * Shall we wake up user space writers? This location covers
++ * ensures that the user space provider does not dominate the internal
++ * noise sources since in case the first call of this function finds
++ * sufficient entropy in the entropy pool, it will not trigger the
++ * wakeup. This implies that when the next /dev/urandom read happens,
++ * the entropy pool is drained.
++ */
++ lrng_writer_wakeup();
++}
+diff -urN linux-5.15/drivers/char/lrng/lrng_health.c linux-5.15-lrng/drivers/char/lrng/lrng_health.c
+--- linux-5.15/drivers/char/lrng/lrng_health.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_health.c 2021-11-29 12:38:11.793278870 +1100
+@@ -0,0 +1,410 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * Linux Random Number Generator (LRNG) Health Testing
++ *
++ * Copyright (C) 2019 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <linux/fips.h>
++#include <linux/module.h>
++
++#include "lrng_internal.h"
++
++/* Stuck Test */
++struct lrng_stuck_test {
++ u32 last_time; /* Stuck test: time of previous IRQ */
++ u32 last_delta; /* Stuck test: delta of previous IRQ */
++ u32 last_delta2; /* Stuck test: 2. time derivation of prev IRQ */
++};
++
++/* Repetition Count Test */
++struct lrng_rct {
++ atomic_t rct_count; /* Number of stuck values */
++};
++
++/* Adaptive Proportion Test */
++struct lrng_apt {
++ /* Data window size */
++#define LRNG_APT_WINDOW_SIZE 512
++ /* LSB of time stamp to process */
++#define LRNG_APT_LSB 16
++#define LRNG_APT_WORD_MASK (LRNG_APT_LSB - 1)
++ atomic_t apt_count; /* APT counter */
++ atomic_t apt_base; /* APT base reference */
++
++ atomic_t apt_trigger;
++ bool apt_base_set; /* Is APT base set? */
++};
++
++/* The health test code must operate lock-less */
++struct lrng_health {
++ struct lrng_rct rct;
++ struct lrng_apt apt;
++
++ bool health_test_enabled;
++
++ /* SP800-90B startup health tests */
++#define LRNG_SP80090B_STARTUP_SAMPLES 1024
++#define LRNG_SP80090B_STARTUP_BLOCKS ((LRNG_SP80090B_STARTUP_SAMPLES + \
++ LRNG_APT_WINDOW_SIZE - 1) / \
++ LRNG_APT_WINDOW_SIZE)
++ bool sp80090b_startup_done;
++ atomic_t sp80090b_startup_blocks;
++};
++
++static struct lrng_health lrng_health = {
++ .rct.rct_count = ATOMIC_INIT(0),
++
++ .apt.apt_count = ATOMIC_INIT(0),
++ .apt.apt_base = ATOMIC_INIT(-1),
++ .apt.apt_trigger = ATOMIC_INIT(LRNG_APT_WINDOW_SIZE),
++ .apt.apt_base_set = false,
++
++ .health_test_enabled = true,
++
++ .sp80090b_startup_blocks = ATOMIC_INIT(LRNG_SP80090B_STARTUP_BLOCKS),
++ .sp80090b_startup_done = false,
++};
++
++static DEFINE_PER_CPU(struct lrng_stuck_test, lrng_stuck_test);
++
++static inline bool lrng_sp80090b_health_requested(void)
++{
++ /* Health tests are only requested in FIPS mode */
++ return fips_enabled;
++}
++
++static inline bool lrng_sp80090b_health_enabled(void)
++{
++ struct lrng_health *health = &lrng_health;
++
++ return lrng_sp80090b_health_requested() && health->health_test_enabled;
++}
++
++/***************************************************************************
++ * SP800-90B Compliance
++ *
++ * If the Linux-RNG is booted into FIPS mode, the following interfaces
++ * provide an SP800-90B compliant noise source:
++ *
++ * * /dev/random
++ * * getrandom(2)
++ * * get_random_bytes when using it in conjunction with
++ * add_random_ready_callback
++ *
++ * All other interfaces, including /dev/urandom or get_random_bytes without
++ * the add_random_ready_callback cannot claim to use an SP800-90B compliant
++ * noise source.
++ ***************************************************************************/
++
++/*
++ * Perform SP800-90B startup testing
++ */
++static inline void lrng_sp80090b_startup(struct lrng_health *health)
++{
++ if (!health->sp80090b_startup_done &&
++ atomic_dec_and_test(&health->sp80090b_startup_blocks)) {
++ struct entropy_buf eb;
++
++ health->sp80090b_startup_done = true;
++ pr_info("SP800-90B startup health tests completed\n");
++ memset(&eb, 0, sizeof(eb));
++ lrng_init_ops(&eb);
++
++ /*
++ * Force a reseed of DRNGs to ensure they are seeded with
++ * entropy that passed the SP800-90B health tests.
++ * As the DRNG always will reseed before generating
++ * random numbers, it does not need a reseed trigger.
++ */
++ lrng_drng_force_reseed();
++ }
++}
++
++/*
++ * Handle failure of SP800-90B startup testing
++ */
++static inline void lrng_sp80090b_startup_failure(struct lrng_health *health)
++{
++ /* Reset of LRNG and its entropy - NOTE: we are in atomic context */
++ lrng_reset();
++
++ /*
++ * Reset the SP800-90B startup test.
++ *
++ * NOTE SP800-90B section 4.3 bullet 4 does not specify what
++ * exactly is to be done in case of failure! Thus, we do what
++ * makes sense, i.e. restarting the health test and thus gating
++ * the output function of /dev/random and getrandom(2).
++ */
++ atomic_set(&health->sp80090b_startup_blocks,
++ LRNG_SP80090B_STARTUP_BLOCKS);
++}
++
++/*
++ * Handle failure of SP800-90B runtime testing
++ */
++static inline void lrng_sp80090b_runtime_failure(struct lrng_health *health)
++{
++ lrng_sp80090b_startup_failure(health);
++ health->sp80090b_startup_done = false;
++}
++
++static inline void lrng_sp80090b_failure(struct lrng_health *health)
++{
++ if (health->sp80090b_startup_done) {
++ pr_err("SP800-90B runtime health test failure - invalidating all existing entropy and initiate SP800-90B startup\n");
++ lrng_sp80090b_runtime_failure(health);
++ } else {
++ pr_err("SP800-90B startup test failure - resetting\n");
++ lrng_sp80090b_startup_failure(health);
++ }
++}
++
++/*
++ * Is the SP800-90B startup testing complete?
++ *
++ * This function is called by the LRNG to determine whether to unblock
++ * a certain user interface. Therefore, only the potentially blocking
++ * user interfaces are considered SP800-90B compliant.
++ */
++bool lrng_sp80090b_startup_complete(void)
++{
++ struct lrng_health *health = &lrng_health;
++
++ return (lrng_sp80090b_health_enabled()) ? health->sp80090b_startup_done:
++ true;
++}
++
++bool lrng_sp80090b_compliant(void)
++{
++ struct lrng_health *health = &lrng_health;
++
++ return lrng_sp80090b_health_enabled() && health->sp80090b_startup_done;
++}
++
++/***************************************************************************
++ * Adaptive Proportion Test
++ *
++ * This test complies with SP800-90B section 4.4.2.
++ ***************************************************************************/
++
++/*
++ * Reset the APT counter
++ *
++ * @health [in] Reference to health state
++ */
++static inline void lrng_apt_reset(struct lrng_health *health,
++ unsigned int time_masked)
++{
++ struct lrng_apt *apt = &health->apt;
++
++ pr_debug("APT value %d for base %d\n",
++ atomic_read(&apt->apt_count), atomic_read(&apt->apt_base));
++
++ /* Reset APT */
++ atomic_set(&apt->apt_count, 0);
++ atomic_set(&apt->apt_base, time_masked);
++}
++
++static inline void lrng_apt_restart(struct lrng_health *health)
++{
++ struct lrng_apt *apt = &health->apt;
++
++ atomic_set(&apt->apt_trigger, LRNG_APT_WINDOW_SIZE);
++}
++
++/*
++ * Insert a new entropy event into APT
++ *
++ * This function does is void as it does not decide about the fate of a time
++ * stamp. An APT failure can only happen at the same time of a stuck test
++ * failure. Thus, the stuck failure will already decide how the time stamp
++ * is handled.
++ *
++ * @health [in] Reference to health state
++ * @now_time [in] Time stamp to process
++ */
++static inline void lrng_apt_insert(struct lrng_health *health,
++ unsigned int now_time)
++{
++ struct lrng_apt *apt = &health->apt;
++
++ if (!lrng_sp80090b_health_requested())
++ return;
++
++ now_time &= LRNG_APT_WORD_MASK;
++
++ /* Initialization of APT */
++ if (!apt->apt_base_set) {
++ atomic_set(&apt->apt_base, now_time);
++ apt->apt_base_set = true;
++ return;
++ }
++
++ if (now_time == (unsigned int)atomic_read(&apt->apt_base)) {
++ u32 apt_val = (u32)atomic_inc_return_relaxed(&apt->apt_count);
++
++ if (apt_val >= CONFIG_LRNG_APT_CUTOFF)
++ lrng_sp80090b_failure(health);
++ }
++
++ if (atomic_dec_and_test(&apt->apt_trigger)) {
++ lrng_apt_restart(health);
++ lrng_apt_reset(health, now_time);
++ lrng_sp80090b_startup(health);
++ }
++}
++
++/***************************************************************************
++ * Repetition Count Test
++ *
++ * The LRNG uses an enhanced version of the Repetition Count Test
++ * (RCT) specified in SP800-90B section 4.4.1. Instead of counting identical
++ * back-to-back values, the input to the RCT is the counting of the stuck
++ * values while filling the entropy pool.
++ *
++ * The RCT is applied with an alpha of 2^-30 compliant to FIPS 140-2 IG 9.8.
++ *
++ * During the counting operation, the LRNG always calculates the RCT
++ * cut-off value of C. If that value exceeds the allowed cut-off value,
++ * the LRNG will invalidate all entropy for the entropy pool which implies
++ * that no data can be extracted from the entropy pool unless new entropy
++ * is received.
++ ***************************************************************************/
++
++/*
++ * Hot code path - Insert data for Repetition Count Test
++ *
++ * @health: Reference to health information
++ * @stuck: Decision of stuck test
++ */
++static inline void lrng_rct(struct lrng_health *health, int stuck)
++{
++ struct lrng_rct *rct = &health->rct;
++
++ if (!lrng_sp80090b_health_requested())
++ return;
++
++ if (stuck) {
++ u32 rct_count = atomic_add_return_relaxed(1, &rct->rct_count);
++
++ pr_debug("RCT count: %u\n", rct_count);
++
++ /*
++ * The cutoff value is based on the following consideration:
++ * alpha = 2^-30 as recommended in FIPS 140-2 IG 9.8.
++ * In addition, we imply an entropy value H of 1 bit as this
++ * is the minimum entropy required to provide full entropy.
++ *
++ * Note, rct_count (which equals to value B in the
++ * pseudo code of SP800-90B section 4.4.1) starts with zero.
++ * Hence we need to subtract one from the cutoff value as
++ * calculated following SP800-90B.
++ */
++ if (rct_count >= CONFIG_LRNG_RCT_CUTOFF) {
++ atomic_set(&rct->rct_count, 0);
++
++ /*
++ * APT must start anew as we consider all previously
++ * recorded data to contain no entropy.
++ */
++ lrng_apt_restart(health);
++
++ lrng_sp80090b_failure(health);
++ }
++ } else {
++ atomic_set(&rct->rct_count, 0);
++ }
++}
++
++/***************************************************************************
++ * Stuck Test
++ *
++ * Checking the:
++ * 1st derivative of the event occurrence (time delta)
++ * 2nd derivative of the event occurrence (delta of time deltas)
++ * 3rd derivative of the event occurrence (delta of delta of time deltas)
++ *
++ * All values must always be non-zero. The stuck test is only valid disabled if
++ * high-resolution time stamps are identified after initialization.
++ ***************************************************************************/
++
++static inline u32 lrng_delta(u32 prev, u32 next)
++{
++ /*
++ * Note that this (unsigned) subtraction does yield the correct value
++ * in the wraparound-case, i.e. when next < prev.
++ */
++ return (next - prev);
++}
++
++/*
++ * Hot code path
++ *
++ * @health: Reference to health information
++ * @now: Event time
++ * @return: 0 event occurrence not stuck (good time stamp)
++ * != 0 event occurrence stuck (reject time stamp)
++ */
++static inline int lrng_irq_stuck(struct lrng_stuck_test *stuck, u32 now_time)
++{
++ u32 delta = lrng_delta(stuck->last_time, now_time);
++ u32 delta2 = lrng_delta(stuck->last_delta, delta);
++ u32 delta3 = lrng_delta(stuck->last_delta2, delta2);
++
++ stuck->last_time = now_time;
++ stuck->last_delta = delta;
++ stuck->last_delta2 = delta2;
++
++ if (!delta || !delta2 || !delta3)
++ return 1;
++
++ return 0;
++}
++
++/***************************************************************************
++ * Health test interfaces
++ ***************************************************************************/
++
++/*
++ * Disable all health tests
++ */
++void lrng_health_disable(void)
++{
++ struct lrng_health *health = &lrng_health;
++
++ health->health_test_enabled = false;
++
++ if (lrng_sp80090b_health_requested())
++ pr_warn("SP800-90B compliance requested but the Linux RNG is NOT SP800-90B compliant\n");
++}
++
++/*
++ * Hot code path - Perform health test on time stamp received from an event
++ *
++ * @now_time Time stamp
++ */
++enum lrng_health_res lrng_health_test(u32 now_time)
++{
++ struct lrng_health *health = &lrng_health;
++ struct lrng_stuck_test *stuck_test = this_cpu_ptr(&lrng_stuck_test);
++ int stuck;
++
++ if (!health->health_test_enabled)
++ return lrng_health_pass;
++
++ lrng_apt_insert(health, now_time);
++
++ stuck = lrng_irq_stuck(stuck_test, now_time);
++ lrng_rct(health, stuck);
++ if (stuck) {
++ /* SP800-90B disallows using a failing health test time stamp */
++ return lrng_sp80090b_health_requested() ?
++ lrng_health_fail_drop : lrng_health_fail_use;
++ }
++
++ return lrng_health_pass;
++}
+diff -urN linux-5.15/drivers/char/lrng/lrng_interfaces.c linux-5.15-lrng/drivers/char/lrng/lrng_interfaces.c
+--- linux-5.15/drivers/char/lrng/lrng_interfaces.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_interfaces.c 2021-11-29 12:37:03.083279132 +1100
+@@ -0,0 +1,654 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * LRNG User and kernel space interfaces
++ *
++ * Copyright (C) 2016 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <linux/freezer.h>
++#include <linux/fs.h>
++#include <linux/genhd.h>
++#include <linux/hw_random.h>
++#include <linux/kthread.h>
++#include <linux/poll.h>
++#include <linux/preempt.h>
++#include <linux/random.h>
++#include <linux/slab.h>
++#include <linux/syscalls.h>
++#include <linux/timex.h>
++
++#define CREATE_TRACE_POINTS
++#include <trace/events/random.h>
++
++#include "lrng_internal.h"
++
++/*
++ * If the entropy count falls under this number of bits, then we
++ * should wake up processes which are selecting or polling on write
++ * access to /dev/random.
++ */
++u32 lrng_write_wakeup_bits = (LRNG_WRITE_WAKEUP_ENTROPY << 3);
++
++static LIST_HEAD(lrng_ready_list);
++static DEFINE_SPINLOCK(lrng_ready_list_lock);
++
++static DECLARE_WAIT_QUEUE_HEAD(lrng_write_wait);
++static DECLARE_WAIT_QUEUE_HEAD(lrng_init_wait);
++static struct fasync_struct *fasync;
++
++/********************************** Helper ***********************************/
++
++/* Is the DRNG seed level too low? */
++static inline bool lrng_need_entropy(void)
++{
++ return (lrng_avail_aux_entropy() < lrng_write_wakeup_bits);
++}
++
++void lrng_writer_wakeup(void)
++{
++ if (lrng_need_entropy() && wq_has_sleeper(&lrng_write_wait)) {
++ wake_up_interruptible(&lrng_write_wait);
++ kill_fasync(&fasync, SIGIO, POLL_OUT);
++ }
++}
++
++void lrng_init_wakeup(void)
++{
++ wake_up_all(&lrng_init_wait);
++ kill_fasync(&fasync, SIGIO, POLL_IN);
++}
++
++/**
++ * lrng_process_ready_list() - Ping all kernel internal callers waiting until
++ * the DRNG is completely initialized to inform that the DRNG reached that
++ * seed level.
++ *
++ * When the SP800-90B testing is enabled, the ping only happens if the SP800-90B
++ * startup health tests are completed. This implies that kernel internal
++ * callers always have an SP800-90B compliant noise source when being
++ * pinged.
++ */
++void lrng_process_ready_list(void)
++{
++ unsigned long flags;
++ struct random_ready_callback *rdy, *tmp;
++
++ if (!lrng_state_operational())
++ return;
++
++ spin_lock_irqsave(&lrng_ready_list_lock, flags);
++ list_for_each_entry_safe(rdy, tmp, &lrng_ready_list, list) {
++ struct module *owner = rdy->owner;
++
++ list_del_init(&rdy->list);
++ rdy->func(rdy);
++ module_put(owner);
++ }
++ spin_unlock_irqrestore(&lrng_ready_list_lock, flags);
++}
++
++void lrng_debug_report_seedlevel(const char *name)
++{
++#ifdef CONFIG_WARN_ALL_UNSEEDED_RANDOM
++ static void *previous = NULL;
++ void *caller = (void *) _RET_IP_;
++
++ if (READ_ONCE(previous) == caller)
++ return;
++
++ if (!lrng_state_min_seeded())
++ pr_notice("%pS %s called without reaching minimally seeded level (available entropy %u)\n",
++ caller, name, lrng_avail_entropy());
++
++ WRITE_ONCE(previous, caller);
++#endif
++}
++
++/************************ LRNG kernel input interfaces ************************/
++
++/*
++ * add_hwgenerator_randomness() - Interface for in-kernel drivers of true
++ * hardware RNGs.
++ *
++ * Those devices may produce endless random bits and will be throttled
++ * when our pool is full.
++ *
++ * @buffer: buffer holding the entropic data from HW noise sources to be used to
++ * insert into entropy pool.
++ * @count: length of buffer
++ * @entropy_bits: amount of entropy in buffer (value is in bits)
++ */
++void add_hwgenerator_randomness(const char *buffer, size_t count,
++ size_t entropy_bits)
++{
++ /*
++ * Suspend writing if we are fully loaded with entropy.
++ * We'll be woken up again once below lrng_write_wakeup_thresh,
++ * or when the calling thread is about to terminate.
++ */
++ wait_event_interruptible(lrng_write_wait,
++ lrng_need_entropy() ||
++ lrng_state_exseed_allow(lrng_noise_source_hw) ||
++ kthread_should_stop());
++ lrng_state_exseed_set(lrng_noise_source_hw, false);
++ lrng_pool_insert_aux(buffer, count, entropy_bits);
++}
++EXPORT_SYMBOL_GPL(add_hwgenerator_randomness);
++
++/*
++ * add_bootloader_randomness() - Handle random seed passed by bootloader.
++ *
++ * If the seed is trustworthy, it would be regarded as hardware RNGs. Otherwise
++ * it would be regarded as device data.
++ * The decision is controlled by CONFIG_RANDOM_TRUST_BOOTLOADER.
++ *
++ * @buf: buffer holding the entropic data from HW noise sources to be used to
++ * insert into entropy pool.
++ * @size: length of buffer
++ */
++void add_bootloader_randomness(const void *buf, unsigned int size)
++{
++ lrng_pool_insert_aux(buf, size,
++ IS_ENABLED(CONFIG_RANDOM_TRUST_BOOTLOADER) ?
++ size * 8 : 0);
++}
++EXPORT_SYMBOL_GPL(add_bootloader_randomness);
++
++/*
++ * Callback for HID layer -- use the HID event values to stir the entropy pool
++ */
++void add_input_randomness(unsigned int type, unsigned int code,
++ unsigned int value)
++{
++ static unsigned char last_value;
++
++ /* ignore autorepeat and the like */
++ if (value == last_value)
++ return;
++
++ last_value = value;
++
++ lrng_pcpu_array_add_u32((type << 4) ^ code ^ (code >> 4) ^ value);
++}
++EXPORT_SYMBOL_GPL(add_input_randomness);
++
++/*
++ * add_device_randomness() - Add device- or boot-specific data to the entropy
++ * pool to help initialize it.
++ *
++ * None of this adds any entropy; it is meant to avoid the problem of
++ * the entropy pool having similar initial state across largely
++ * identical devices.
++ *
++ * @buf: buffer holding the entropic data from HW noise sources to be used to
++ * insert into entropy pool.
++ * @size: length of buffer
++ */
++void add_device_randomness(const void *buf, unsigned int size)
++{
++ lrng_pool_insert_aux((u8 *)buf, size, 0);
++}
++EXPORT_SYMBOL(add_device_randomness);
++
++#ifdef CONFIG_BLOCK
++void rand_initialize_disk(struct gendisk *disk) { }
++void add_disk_randomness(struct gendisk *disk) { }
++EXPORT_SYMBOL(add_disk_randomness);
++#endif
++
++#ifndef CONFIG_LRNG_IRQ
++void add_interrupt_randomness(int irq, int irq_flg) { }
++EXPORT_SYMBOL(add_interrupt_randomness);
++#endif
++
++/*
++ * del_random_ready_callback() - Delete a previously registered readiness
++ * callback function.
++ *
++ * @rdy: callback definition that was registered initially
++ */
++void del_random_ready_callback(struct random_ready_callback *rdy)
++{
++ unsigned long flags;
++ struct module *owner = NULL;
++
++ spin_lock_irqsave(&lrng_ready_list_lock, flags);
++ if (!list_empty(&rdy->list)) {
++ list_del_init(&rdy->list);
++ owner = rdy->owner;
++ }
++ spin_unlock_irqrestore(&lrng_ready_list_lock, flags);
++
++ module_put(owner);
++}
++EXPORT_SYMBOL(del_random_ready_callback);
++
++/*
++ * add_random_ready_callback() - Add a callback function that will be invoked
++ * when the DRNG is fully initialized and seeded.
++ *
++ * @rdy: callback definition to be invoked when the LRNG is seeded
++ *
++ * Return:
++ * * 0 if callback is successfully added
++ * * -EALREADY if pool is already initialised (callback not called)
++ * * -ENOENT if module for callback is not alive
++ */
++int add_random_ready_callback(struct random_ready_callback *rdy)
++{
++ struct module *owner;
++ unsigned long flags;
++ int err = -EALREADY;
++
++ if (likely(lrng_state_operational()))
++ return err;
++
++ owner = rdy->owner;
++ if (!try_module_get(owner))
++ return -ENOENT;
++
++ spin_lock_irqsave(&lrng_ready_list_lock, flags);
++ if (lrng_state_operational())
++ goto out;
++
++ owner = NULL;
++
++ list_add(&rdy->list, &lrng_ready_list);
++ err = 0;
++
++out:
++ spin_unlock_irqrestore(&lrng_ready_list_lock, flags);
++
++ module_put(owner);
++
++ return err;
++}
++EXPORT_SYMBOL(add_random_ready_callback);
++
++/*********************** LRNG kernel output interfaces ************************/
++
++/*
++ * get_random_bytes() - Provider of cryptographic strong random numbers for
++ * kernel-internal usage.
++ *
++ * This function is appropriate for all in-kernel use cases. However,
++ * it will always use the ChaCha20 DRNG.
++ *
++ * @buf: buffer to store the random bytes
++ * @nbytes: size of the buffer
++ */
++void get_random_bytes(void *buf, int nbytes)
++{
++ lrng_drng_get_atomic((u8 *)buf, (u32)nbytes);
++ lrng_debug_report_seedlevel("get_random_bytes");
++}
++EXPORT_SYMBOL(get_random_bytes);
++
++/*
++ * get_random_bytes_full() - Provider of cryptographic strong random numbers
++ * for kernel-internal usage.
++ *
++ * This function is appropriate only for non-atomic use cases as this
++ * function may sleep. Though, it provides access to the full functionality
++ * of LRNG including the switchable DRNG support, that may support other
++ * DRNGs such as the SP800-90A DRBG.
++ *
++ * @buf: buffer to store the random bytes
++ * @nbytes: size of the buffer
++ */
++void get_random_bytes_full(void *buf, int nbytes)
++{
++ lrng_drng_get_sleep((u8 *)buf, (u32)nbytes);
++ lrng_debug_report_seedlevel("get_random_bytes_full");
++}
++EXPORT_SYMBOL(get_random_bytes_full);
++
++/*
++ * wait_for_random_bytes() - Wait for the LRNG to be seeded and thus
++ * guaranteed to supply cryptographically secure random numbers.
++ *
++ * This applies to: the /dev/urandom device, the get_random_bytes function,
++ * and the get_random_{u32,u64,int,long} family of functions. Using any of
++ * these functions without first calling this function forfeits the guarantee
++ * of security.
++ *
++ * Return:
++ * * 0 if the LRNG has been seeded.
++ * * -ERESTARTSYS if the function was interrupted by a signal.
++ */
++int wait_for_random_bytes(void)
++{
++ if (likely(lrng_state_min_seeded()))
++ return 0;
++ return wait_event_interruptible(lrng_init_wait,
++ lrng_state_min_seeded());
++}
++EXPORT_SYMBOL(wait_for_random_bytes);
++
++/*
++ * get_random_bytes_arch() - This function will use the architecture-specific
++ * hardware random number generator if it is available.
++ *
++ * The arch-specific hw RNG will almost certainly be faster than what we can
++ * do in software, but it is impossible to verify that it is implemented
++ * securely (as opposed, to, say, the AES encryption of a sequence number using
++ * a key known by the NSA). So it's useful if we need the speed, but only if
++ * we're willing to trust the hardware manufacturer not to have put in a back
++ * door.
++ *
++ * @buf: buffer allocated by caller to store the random data in
++ * @nbytes: length of outbuf
++ *
++ * Return: number of bytes filled in.
++ */
++int __must_check get_random_bytes_arch(void *buf, int nbytes)
++{
++ u8 *p = buf;
++
++ while (nbytes) {
++ unsigned long v;
++ int chunk = min_t(int, nbytes, sizeof(unsigned long));
++
++ if (!arch_get_random_long(&v))
++ break;
++
++ memcpy(p, &v, chunk);
++ p += chunk;
++ nbytes -= chunk;
++ }
++
++ if (nbytes)
++ lrng_drng_get_atomic((u8 *)p, (u32)nbytes);
++
++ return nbytes;
++}
++EXPORT_SYMBOL(get_random_bytes_arch);
++
++/*
++ * Returns whether or not the LRNG has been seeded.
++ *
++ * Returns: true if the urandom pool has been seeded.
++ * false if the urandom pool has not been seeded.
++ */
++bool rng_is_initialized(void)
++{
++ return lrng_state_operational();
++}
++EXPORT_SYMBOL(rng_is_initialized);
++
++/************************ LRNG user output interfaces *************************/
++
++static ssize_t lrng_read_common(char __user *buf, size_t nbytes)
++{
++ ssize_t ret = 0;
++ u8 tmpbuf[LRNG_DRNG_BLOCKSIZE] __aligned(LRNG_KCAPI_ALIGN);
++ u8 *tmp_large = NULL, *tmp = tmpbuf;
++ u32 tmplen = sizeof(tmpbuf);
++
++ if (nbytes == 0)
++ return 0;
++
++ /*
++ * Satisfy large read requests -- as the common case are smaller
++ * request sizes, such as 16 or 32 bytes, avoid a kmalloc overhead for
++ * those by using the stack variable of tmpbuf.
++ */
++ if (!CONFIG_BASE_SMALL && (nbytes > sizeof(tmpbuf))) {
++ tmplen = min_t(u32, nbytes, LRNG_DRNG_MAX_REQSIZE);
++ tmp_large = kmalloc(tmplen + LRNG_KCAPI_ALIGN, GFP_KERNEL);
++ if (!tmp_large)
++ tmplen = sizeof(tmpbuf);
++ else
++ tmp = PTR_ALIGN(tmp_large, LRNG_KCAPI_ALIGN);
++ }
++
++ while (nbytes) {
++ u32 todo = min_t(u32, nbytes, tmplen);
++ int rc = 0;
++
++ /* Reschedule if we received a large request. */
++ if ((tmp_large) && need_resched()) {
++ if (signal_pending(current)) {
++ if (ret == 0)
++ ret = -ERESTARTSYS;
++ break;
++ }
++ schedule();
++ }
++
++ rc = lrng_drng_get_sleep(tmp, todo);
++ if (rc <= 0) {
++ if (rc < 0)
++ ret = rc;
++ break;
++ }
++ if (copy_to_user(buf, tmp, rc)) {
++ ret = -EFAULT;
++ break;
++ }
++
++ nbytes -= rc;
++ buf += rc;
++ ret += rc;
++ }
++
++ /* Wipe data just returned from memory */
++ if (tmp_large)
++ kfree_sensitive(tmp_large);
++ else
++ memzero_explicit(tmpbuf, sizeof(tmpbuf));
++
++ return ret;
++}
++
++static ssize_t
++lrng_read_common_block(int nonblock, char __user *buf, size_t nbytes)
++{
++ if (nbytes == 0)
++ return 0;
++
++ if (unlikely(!lrng_state_operational())) {
++ int ret;
++
++ if (nonblock)
++ return -EAGAIN;
++
++ ret = wait_event_interruptible(lrng_init_wait,
++ lrng_state_operational());
++ if (unlikely(ret))
++ return ret;
++ }
++
++ return lrng_read_common(buf, nbytes);
++}
++
++static ssize_t lrng_drng_read_block(struct file *file, char __user *buf,
++ size_t nbytes, loff_t *ppos)
++{
++ return lrng_read_common_block(file->f_flags & O_NONBLOCK, buf, nbytes);
++}
++
++static __poll_t lrng_random_poll(struct file *file, poll_table *wait)
++{
++ __poll_t mask;
++
++ poll_wait(file, &lrng_init_wait, wait);
++ poll_wait(file, &lrng_write_wait, wait);
++ mask = 0;
++ if (lrng_state_operational())
++ mask |= EPOLLIN | EPOLLRDNORM;
++ if (lrng_need_entropy() ||
++ lrng_state_exseed_allow(lrng_noise_source_user)) {
++ lrng_state_exseed_set(lrng_noise_source_user, false);
++ mask |= EPOLLOUT | EPOLLWRNORM;
++ }
++ return mask;
++}
++
++static ssize_t lrng_drng_write_common(const char __user *buffer, size_t count,
++ u32 entropy_bits)
++{
++ ssize_t ret = 0;
++ u8 buf[64] __aligned(LRNG_KCAPI_ALIGN);
++ const char __user *p = buffer;
++ u32 orig_entropy_bits = entropy_bits;
++
++ if (!lrng_get_available())
++ return -EAGAIN;
++
++ count = min_t(size_t, count, INT_MAX);
++ while (count > 0) {
++ size_t bytes = min_t(size_t, count, sizeof(buf));
++ u32 ent = min_t(u32, bytes<<3, entropy_bits);
++
++ if (copy_from_user(&buf, p, bytes))
++ return -EFAULT;
++ /* Inject data into entropy pool */
++ lrng_pool_insert_aux(buf, bytes, ent);
++
++ count -= bytes;
++ p += bytes;
++ ret += bytes;
++ entropy_bits -= ent;
++
++ cond_resched();
++ }
++
++ /* Force reseed of DRNG during next data request. */
++ if (!orig_entropy_bits)
++ lrng_drng_force_reseed();
++
++ return ret;
++}
++
++static ssize_t lrng_drng_read(struct file *file, char __user *buf,
++ size_t nbytes, loff_t *ppos)
++{
++ if (!lrng_state_min_seeded())
++ pr_notice_ratelimited("%s - use of insufficiently seeded DRNG (%zu bytes read)\n",
++ current->comm, nbytes);
++ else if (!lrng_state_operational())
++ pr_debug_ratelimited("%s - use of not fully seeded DRNG (%zu bytes read)\n",
++ current->comm, nbytes);
++
++ return lrng_read_common(buf, nbytes);
++}
++
++static ssize_t lrng_drng_write(struct file *file, const char __user *buffer,
++ size_t count, loff_t *ppos)
++{
++ return lrng_drng_write_common(buffer, count, 0);
++}
++
++static long lrng_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
++{
++ u32 digestsize_bits;
++ int size, ent_count_bits;
++ int __user *p = (int __user *)arg;
++
++ switch (cmd) {
++ case RNDGETENTCNT:
++ ent_count_bits = lrng_avail_entropy();
++ if (put_user(ent_count_bits, p))
++ return -EFAULT;
++ return 0;
++ case RNDADDTOENTCNT:
++ if (!capable(CAP_SYS_ADMIN))
++ return -EPERM;
++ if (get_user(ent_count_bits, p))
++ return -EFAULT;
++ ent_count_bits = (int)lrng_avail_aux_entropy() + ent_count_bits;
++ if (ent_count_bits < 0)
++ ent_count_bits = 0;
++ digestsize_bits = lrng_get_digestsize();
++ if (ent_count_bits > digestsize_bits)
++ ent_count_bits = digestsize_bits;
++ lrng_pool_set_entropy(ent_count_bits);
++ return 0;
++ case RNDADDENTROPY:
++ if (!capable(CAP_SYS_ADMIN))
++ return -EPERM;
++ if (get_user(ent_count_bits, p++))
++ return -EFAULT;
++ if (ent_count_bits < 0)
++ return -EINVAL;
++ if (get_user(size, p++))
++ return -EFAULT;
++ if (size < 0)
++ return -EINVAL;
++ /* there cannot be more entropy than data */
++ ent_count_bits = min(ent_count_bits, size<<3);
++ return lrng_drng_write_common((const char __user *)p, size,
++ ent_count_bits);
++ case RNDZAPENTCNT:
++ case RNDCLEARPOOL:
++ /* Clear the entropy pool counter. */
++ if (!capable(CAP_SYS_ADMIN))
++ return -EPERM;
++ lrng_pool_set_entropy(0);
++ return 0;
++ case RNDRESEEDCRNG:
++ /*
++ * We leave the capability check here since it is present
++ * in the upstream's RNG implementation. Yet, user space
++ * can trigger a reseed as easy as writing into /dev/random
++ * or /dev/urandom where no privilege is needed.
++ */
++ if (!capable(CAP_SYS_ADMIN))
++ return -EPERM;
++ /* Force a reseed of all DRNGs */
++ lrng_drng_force_reseed();
++ return 0;
++ default:
++ return -EINVAL;
++ }
++}
++
++static int lrng_fasync(int fd, struct file *filp, int on)
++{
++ return fasync_helper(fd, filp, on, &fasync);
++}
++
++const struct file_operations random_fops = {
++ .read = lrng_drng_read_block,
++ .write = lrng_drng_write,
++ .poll = lrng_random_poll,
++ .unlocked_ioctl = lrng_ioctl,
++ .compat_ioctl = compat_ptr_ioctl,
++ .fasync = lrng_fasync,
++ .llseek = noop_llseek,
++};
++
++const struct file_operations urandom_fops = {
++ .read = lrng_drng_read,
++ .write = lrng_drng_write,
++ .unlocked_ioctl = lrng_ioctl,
++ .compat_ioctl = compat_ptr_ioctl,
++ .fasync = lrng_fasync,
++ .llseek = noop_llseek,
++};
++
++SYSCALL_DEFINE3(getrandom, char __user *, buf, size_t, count,
++ unsigned int, flags)
++{
++ if (flags & ~(GRND_NONBLOCK|GRND_RANDOM|GRND_INSECURE))
++ return -EINVAL;
++
++ /*
++ * Requesting insecure and blocking randomness at the same time makes
++ * no sense.
++ */
++ if ((flags &
++ (GRND_INSECURE|GRND_RANDOM)) == (GRND_INSECURE|GRND_RANDOM))
++ return -EINVAL;
++
++ if (count > INT_MAX)
++ count = INT_MAX;
++
++ if (flags & GRND_INSECURE)
++ return lrng_drng_read(NULL, buf, count, NULL);
++
++ return lrng_read_common_block(flags & GRND_NONBLOCK, buf, count);
++}
+diff -urN linux-5.15/drivers/char/lrng/lrng_internal.h linux-5.15-lrng/drivers/char/lrng/lrng_internal.h
+--- linux-5.15/drivers/char/lrng/lrng_internal.h 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_internal.h 2021-11-29 12:36:52.113279174 +1100
+@@ -0,0 +1,485 @@
++/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
++/*
++ * Copyright (C) 2018 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#ifndef _LRNG_INTERNAL_H
++#define _LRNG_INTERNAL_H
++
++#include <crypto/sha1.h>
++#include <crypto/sha2.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/mutex.h>
++#include <linux/rwlock.h>
++#include <linux/slab.h>
++#include <linux/spinlock.h>
++
++/*************************** General LRNG parameter ***************************/
++
++/* Security strength of LRNG -- this must match DRNG security strength */
++#define LRNG_DRNG_SECURITY_STRENGTH_BYTES 32
++#define LRNG_DRNG_SECURITY_STRENGTH_BITS (LRNG_DRNG_SECURITY_STRENGTH_BYTES * 8)
++#define LRNG_DRNG_BLOCKSIZE 64 /* Maximum of DRNG block sizes */
++#define LRNG_DRNG_INIT_SEED_SIZE_BITS (LRNG_DRNG_SECURITY_STRENGTH_BITS + \
++ CONFIG_LRNG_SEED_BUFFER_INIT_ADD_BITS)
++#define LRNG_DRNG_INIT_SEED_SIZE_BYTES (LRNG_DRNG_INIT_SEED_SIZE_BITS >> 3)
++
++/*
++ * SP800-90A defines a maximum request size of 1<<16 bytes. The given value is
++ * considered a safer margin.
++ *
++ * This value is allowed to be changed.
++ */
++#define LRNG_DRNG_MAX_REQSIZE (1<<12)
++
++/*
++ * SP800-90A defines a maximum number of requests between reseeds of 2^48.
++ * The given value is considered a much safer margin, balancing requests for
++ * frequent reseeds with the need to conserve entropy. This value MUST NOT be
++ * larger than INT_MAX because it is used in an atomic_t.
++ *
++ * This value is allowed to be changed.
++ */
++#define LRNG_DRNG_RESEED_THRESH (1<<20)
++
++/*
++ * Maximum DRNG generation operations without reseed having full entropy
++ * This value defines the absolute maximum value of DRNG generation operations
++ * without a reseed holding full entropy. LRNG_DRNG_RESEED_THRESH is the
++ * threshold when a new reseed is attempted. But it is possible that this fails
++ * to deliver full entropy. In this case the DRNG will continue to provide data
++ * even though it was not reseeded with full entropy. To avoid in the extreme
++ * case that no reseed is performed for too long, this threshold is enforced.
++ * If that absolute low value is reached, the LRNG is marked as not operational.
++ *
++ * This value is allowed to be changed.
++ */
++#define LRNG_DRNG_MAX_WITHOUT_RESEED (1<<30)
++
++/*
++ * Min required seed entropy is 128 bits covering the minimum entropy
++ * requirement of SP800-131A and the German BSI's TR02102.
++ *
++ * This value is allowed to be changed.
++ */
++#define LRNG_FULL_SEED_ENTROPY_BITS LRNG_DRNG_SECURITY_STRENGTH_BITS
++#define LRNG_MIN_SEED_ENTROPY_BITS 128
++#define LRNG_INIT_ENTROPY_BITS 32
++
++/*
++ * Wakeup value
++ *
++ * This value is allowed to be changed but must not be larger than the
++ * digest size of the hash operation used update the aux_pool.
++ */
++#ifdef CONFIG_CRYPTO_LIB_SHA256
++# define LRNG_ATOMIC_DIGEST_SIZE SHA256_DIGEST_SIZE
++#else
++# define LRNG_ATOMIC_DIGEST_SIZE SHA1_DIGEST_SIZE
++#endif
++#define LRNG_WRITE_WAKEUP_ENTROPY LRNG_ATOMIC_DIGEST_SIZE
++
++/*
++ * If the switching support is configured, we must provide support up to
++ * the largest digest size. Without switching support, we know it is only
++ * the built-in digest size.
++ */
++#ifdef CONFIG_LRNG_DRNG_SWITCH
++# define LRNG_MAX_DIGESTSIZE 64
++#else
++# define LRNG_MAX_DIGESTSIZE LRNG_ATOMIC_DIGEST_SIZE
++#endif
++
++/*
++ * Oversampling factor of IRQ events to obtain
++ * LRNG_DRNG_SECURITY_STRENGTH_BYTES. This factor is used when a
++ * high-resolution time stamp is not available. In this case, jiffies and
++ * register contents are used to fill the entropy pool. These noise sources
++ * are much less entropic than the high-resolution timer. The entropy content
++ * is the entropy content assumed with LRNG_IRQ_ENTROPY_BITS divided by
++ * LRNG_IRQ_OVERSAMPLING_FACTOR.
++ *
++ * This value is allowed to be changed.
++ */
++#define LRNG_IRQ_OVERSAMPLING_FACTOR 10
++
++/* Alignmask that is intended to be identical to CRYPTO_MINALIGN */
++#define LRNG_KCAPI_ALIGN ARCH_KMALLOC_MINALIGN
++
++/*
++ * This definition must provide a buffer that is equal to SHASH_DESC_ON_STACK
++ * as it will be casted into a struct shash_desc.
++ */
++#define LRNG_POOL_SIZE (sizeof(struct shash_desc) + HASH_MAX_DESCSIZE)
++
++/************************ Default DRNG implementation *************************/
++
++extern struct chacha20_state chacha20;
++extern const struct lrng_crypto_cb lrng_cc20_crypto_cb;
++void lrng_cc20_init_state(struct chacha20_state *state);
++
++/********************************** /proc *************************************/
++
++#ifdef CONFIG_SYSCTL
++void lrng_pool_inc_numa_node(void);
++void lrng_proc_update_max_write_thresh(u32 new_digestsize);
++#else
++static inline void lrng_pool_inc_numa_node(void) { }
++static inline void lrng_proc_update_max_write_thresh(u32 new_digestsize) { }
++#endif
++
++/****************************** LRNG interfaces *******************************/
++
++extern u32 lrng_write_wakeup_bits;
++extern int lrng_drng_reseed_max_time;
++
++void lrng_writer_wakeup(void);
++void lrng_init_wakeup(void);
++void lrng_debug_report_seedlevel(const char *name);
++void lrng_process_ready_list(void);
++
++/* External interface to use of the switchable DRBG inside the kernel */
++void get_random_bytes_full(void *buf, int nbytes);
++
++/************************* Jitter RNG Entropy Source **************************/
++
++#ifdef CONFIG_LRNG_JENT
++u32 lrng_get_jent(u8 *outbuf, u32 requested_bits);
++u32 lrng_jent_entropylevel(u32 requested_bits);
++void lrng_jent_es_state(unsigned char *buf, size_t buflen);
++#else /* CONFIG_LRNG_JENT */
++static inline u32 lrng_get_jent(u8 *outbuf, u32 requested_bits) { return 0; }
++static inline u32 lrng_jent_entropylevel(u32 requested_bits) { return 0; }
++static inline void lrng_jent_es_state(unsigned char *buf, size_t buflen) { }
++#endif /* CONFIG_LRNG_JENT */
++
++/************************** CPU-based Entropy Source **************************/
++
++static inline u32 lrng_fast_noise_entropylevel(u32 ent_bits, u32 requested_bits)
++{
++ /* Obtain entropy statement */
++ ent_bits = ent_bits * requested_bits / LRNG_DRNG_SECURITY_STRENGTH_BITS;
++ /* Cap entropy to buffer size in bits */
++ ent_bits = min_t(u32, ent_bits, requested_bits);
++ return ent_bits;
++}
++
++#ifdef CONFIG_LRNG_CPU
++u32 lrng_get_arch(u8 *outbuf, u32 requested_bits);
++u32 lrng_archrandom_entropylevel(u32 requested_bits);
++void lrng_arch_es_state(unsigned char *buf, size_t buflen);
++#else /* CONFIG_LRNG_CPU */
++static inline u32 lrng_get_arch(u8 *outbuf, u32 requested_bits) { return 0; }
++static inline u32 lrng_archrandom_entropylevel(u32 requested_bits) { return 0; }
++static inline void lrng_arch_es_state(unsigned char *buf, size_t buflen) { }
++#endif /* CONFIG_LRNG_CPU */
++
++/************************** Interrupt Entropy Source **************************/
++
++#ifdef CONFIG_LRNG_IRQ
++void lrng_pcpu_reset(void);
++u32 lrng_pcpu_avail_pool_size(void);
++u32 lrng_pcpu_avail_entropy(void);
++int lrng_pcpu_switch_hash(int node,
++ const struct lrng_crypto_cb *new_cb, void *new_hash,
++ const struct lrng_crypto_cb *old_cb);
++u32 lrng_pcpu_pool_hash(u8 *outbuf, u32 requested_bits, bool fully_seeded);
++void lrng_pcpu_array_add_u32(u32 data);
++u32 lrng_gcd_analyze(u32 *history, size_t nelem);
++void lrng_irq_es_state(unsigned char *buf, size_t buflen);
++#else /* CONFIG_LRNG_IRQ */
++static inline void lrng_pcpu_reset(void) { }
++static inline u32 lrng_pcpu_avail_pool_size(void) { return 0; }
++static inline u32 lrng_pcpu_avail_entropy(void) { return 0; }
++static inline int lrng_pcpu_switch_hash(int node,
++ const struct lrng_crypto_cb *new_cb, void *new_hash,
++ const struct lrng_crypto_cb *old_cb)
++{
++ return 0;
++}
++static inline u32 lrng_pcpu_pool_hash(u8 *outbuf, u32 requested_bits,
++ bool fully_seeded)
++{
++ return 0;
++}
++static inline void lrng_pcpu_array_add_u32(u32 data) { }
++static inline void lrng_irq_es_state(unsigned char *buf, size_t buflen) { }
++#endif /* CONFIG_LRNG_IRQ */
++
++/****************************** DRNG processing *******************************/
++
++/* DRNG state handle */
++struct lrng_drng {
++ void *drng; /* DRNG handle */
++ void *hash; /* Hash handle */
++ const struct lrng_crypto_cb *crypto_cb; /* Crypto callbacks */
++ atomic_t requests; /* Number of DRNG requests */
++ atomic_t requests_since_fully_seeded; /* Number DRNG requests since
++ last fully seeded */
++ unsigned long last_seeded; /* Last time it was seeded */
++ bool fully_seeded; /* Is DRNG fully seeded? */
++ bool force_reseed; /* Force a reseed */
++
++ /* Lock write operations on DRNG state, DRNG replacement of crypto_cb */
++ struct mutex lock;
++ spinlock_t spin_lock;
++ /* Lock *hash replacement - always take before DRNG lock */
++ rwlock_t hash_lock;
++};
++
++extern struct mutex lrng_crypto_cb_update;
++
++struct lrng_drng *lrng_drng_init_instance(void);
++struct lrng_drng *lrng_drng_atomic_instance(void);
++
++static __always_inline bool lrng_drng_is_atomic(struct lrng_drng *drng)
++{
++ return (drng->drng == lrng_drng_atomic_instance()->drng);
++}
++
++/* Lock the DRNG */
++static __always_inline void lrng_drng_lock(struct lrng_drng *drng,
++ unsigned long *flags)
++ __acquires(&drng->spin_lock)
++{
++ /* Use spin lock in case the atomic DRNG context is used */
++ if (lrng_drng_is_atomic(drng)) {
++ spin_lock_irqsave(&drng->spin_lock, *flags);
++
++ /*
++ * In case a lock transition happened while we were spinning,
++ * catch this case and use the new lock type.
++ */
++ if (!lrng_drng_is_atomic(drng)) {
++ spin_unlock_irqrestore(&drng->spin_lock, *flags);
++ __acquire(&drng->spin_lock);
++ mutex_lock(&drng->lock);
++ }
++ } else {
++ __acquire(&drng->spin_lock);
++ mutex_lock(&drng->lock);
++ }
++}
++
++/* Unlock the DRNG */
++static __always_inline void lrng_drng_unlock(struct lrng_drng *drng,
++ unsigned long *flags)
++ __releases(&drng->spin_lock)
++{
++ if (lrng_drng_is_atomic(drng)) {
++ spin_unlock_irqrestore(&drng->spin_lock, *flags);
++ } else {
++ mutex_unlock(&drng->lock);
++ __release(&drng->spin_lock);
++ }
++}
++
++void lrng_reset(void);
++void lrng_drngs_init_cc20(bool force_seed);
++bool lrng_sp80090c_compliant(void);
++
++static inline u32 lrng_compress_osr(void)
++{
++ return lrng_sp80090c_compliant() ? CONFIG_LRNG_OVERSAMPLE_ES_BITS : 0;
++}
++
++static inline u32 lrng_reduce_by_osr(u32 entropy_bits)
++{
++ u32 osr_bits = lrng_compress_osr();
++ return (entropy_bits >= osr_bits) ? (entropy_bits - osr_bits) : 0;
++}
++
++bool lrng_get_available(void);
++void lrng_set_available(void);
++void lrng_drng_reset(struct lrng_drng *drng);
++int lrng_drng_get_atomic(u8 *outbuf, u32 outbuflen);
++int lrng_drng_get_sleep(u8 *outbuf, u32 outbuflen);
++void lrng_drng_force_reseed(void);
++void lrng_drng_seed_work(struct work_struct *dummy);
++
++#ifdef CONFIG_NUMA
++struct lrng_drng **lrng_drng_instances(void);
++void lrng_drngs_numa_alloc(void);
++#else /* CONFIG_NUMA */
++static inline struct lrng_drng **lrng_drng_instances(void) { return NULL; }
++static inline void lrng_drngs_numa_alloc(void) { return; }
++#endif /* CONFIG_NUMA */
++
++/************************* Entropy sources management *************************/
++
++enum lrng_external_noise_source {
++ lrng_noise_source_hw,
++ lrng_noise_source_user
++};
++
++void lrng_set_entropy_thresh(u32 new);
++u32 lrng_avail_entropy(void);
++void lrng_reset_state(void);
++
++bool lrng_state_exseed_allow(enum lrng_external_noise_source source);
++void lrng_state_exseed_set(enum lrng_external_noise_source source, bool type);
++bool lrng_state_min_seeded(void);
++bool lrng_state_fully_seeded(void);
++bool lrng_state_operational(void);
++
++int lrng_pool_trylock(void);
++void lrng_pool_unlock(void);
++void lrng_pool_all_numa_nodes_seeded(bool set);
++void lrng_pool_add_entropy(void);
++
++struct entropy_buf {
++ u8 a[LRNG_DRNG_INIT_SEED_SIZE_BYTES];
++ u8 b[LRNG_DRNG_INIT_SEED_SIZE_BYTES];
++ u8 c[LRNG_DRNG_INIT_SEED_SIZE_BYTES];
++ u8 d[LRNG_DRNG_INIT_SEED_SIZE_BYTES];
++ u32 now, a_bits, b_bits, c_bits, d_bits;
++};
++
++bool lrng_fully_seeded(bool fully_seeded, struct entropy_buf *eb);
++void lrng_unset_fully_seeded(struct lrng_drng *drng);
++void lrng_fill_seed_buffer(struct entropy_buf *entropy_buf, u32 requested_bits);
++void lrng_init_ops(struct entropy_buf *eb);
++
++/*********************** Auxiliary Pool Entropy Source ************************/
++
++u32 lrng_avail_aux_entropy(void);
++void lrng_aux_es_state(unsigned char *buf, size_t buflen);
++u32 lrng_get_digestsize(void);
++void lrng_pool_set_entropy(u32 entropy_bits);
++int lrng_aux_switch_hash(const struct lrng_crypto_cb *new_cb, void *new_hash,
++ const struct lrng_crypto_cb *old_cb);
++int lrng_pool_insert_aux(const u8 *inbuf, u32 inbuflen, u32 entropy_bits);
++void lrng_get_backtrack_aux(struct entropy_buf *entropy_buf,
++ u32 requested_bits);
++
++/* Obtain the security strength of the LRNG in bits */
++static inline u32 lrng_security_strength(void)
++{
++ /*
++ * We use a hash to read the entropy in the entropy pool. According to
++ * SP800-90B table 1, the entropy can be at most the digest size.
++ * Considering this together with the last sentence in section 3.1.5.1.2
++ * the security strength of a (approved) hash is equal to its output
++ * size. On the other hand the entropy cannot be larger than the
++ * security strength of the used DRBG.
++ */
++ return min_t(u32, LRNG_FULL_SEED_ENTROPY_BITS, lrng_get_digestsize());
++}
++
++static inline u32 lrng_get_seed_entropy_osr(bool fully_seeded)
++{
++ u32 requested_bits = lrng_security_strength();
++
++ /* Apply oversampling during initialization according to SP800-90C */
++ if (lrng_sp80090c_compliant() && !fully_seeded)
++ requested_bits += CONFIG_LRNG_SEED_BUFFER_INIT_ADD_BITS;
++ return requested_bits;
++}
++
++/************************** Health Test linking code **************************/
++
++enum lrng_health_res {
++ lrng_health_pass, /* Health test passes on time stamp */
++ lrng_health_fail_use, /* Time stamp unhealthy, but mix in */
++ lrng_health_fail_drop /* Time stamp unhealthy, drop it */
++};
++
++#ifdef CONFIG_LRNG_HEALTH_TESTS
++bool lrng_sp80090b_startup_complete(void);
++bool lrng_sp80090b_compliant(void);
++
++enum lrng_health_res lrng_health_test(u32 now_time);
++void lrng_health_disable(void);
++
++#else /* CONFIG_LRNG_HEALTH_TESTS */
++static inline bool lrng_sp80090b_startup_complete(void) { return true; }
++static inline bool lrng_sp80090b_compliant(void) { return false; }
++
++static inline enum lrng_health_res
++lrng_health_test(u32 now_time) { return lrng_health_pass; }
++static inline void lrng_health_disable(void) { }
++#endif /* CONFIG_LRNG_HEALTH_TESTS */
++
++/****************************** Helper code ***********************************/
++
++static inline u32 atomic_read_u32(atomic_t *v)
++{
++ return (u32)atomic_read(v);
++}
++
++/******************** Crypto Primitive Switching Support **********************/
++
++#ifdef CONFIG_LRNG_DRNG_SWITCH
++static inline void lrng_hash_lock(struct lrng_drng *drng, unsigned long *flags)
++{
++ read_lock_irqsave(&drng->hash_lock, *flags);
++}
++
++static inline void lrng_hash_unlock(struct lrng_drng *drng, unsigned long flags)
++{
++ read_unlock_irqrestore(&drng->hash_lock, flags);
++}
++#else /* CONFIG_LRNG_DRNG_SWITCH */
++static inline void lrng_hash_lock(struct lrng_drng *drng, unsigned long *flags)
++{ }
++
++static inline void lrng_hash_unlock(struct lrng_drng *drng, unsigned long flags)
++{ }
++#endif /* CONFIG_LRNG_DRNG_SWITCH */
++
++/*************************** Auxiliary functions ******************************/
++
++void invalidate_batched_entropy(void);
++
++/***************************** Testing code ***********************************/
++
++#ifdef CONFIG_LRNG_RAW_HIRES_ENTROPY
++bool lrng_raw_hires_entropy_store(u32 value);
++#else /* CONFIG_LRNG_RAW_HIRES_ENTROPY */
++static inline bool lrng_raw_hires_entropy_store(u32 value) { return false; }
++#endif /* CONFIG_LRNG_RAW_HIRES_ENTROPY */
++
++#ifdef CONFIG_LRNG_RAW_JIFFIES_ENTROPY
++bool lrng_raw_jiffies_entropy_store(u32 value);
++#else /* CONFIG_LRNG_RAW_JIFFIES_ENTROPY */
++static inline bool lrng_raw_jiffies_entropy_store(u32 value) { return false; }
++#endif /* CONFIG_LRNG_RAW_JIFFIES_ENTROPY */
++
++#ifdef CONFIG_LRNG_RAW_IRQ_ENTROPY
++bool lrng_raw_irq_entropy_store(u32 value);
++#else /* CONFIG_LRNG_RAW_IRQ_ENTROPY */
++static inline bool lrng_raw_irq_entropy_store(u32 value) { return false; }
++#endif /* CONFIG_LRNG_RAW_IRQ_ENTROPY */
++
++#ifdef CONFIG_LRNG_RAW_IRQFLAGS_ENTROPY
++bool lrng_raw_irqflags_entropy_store(u32 value);
++#else /* CONFIG_LRNG_RAW_IRQFLAGS_ENTROPY */
++static inline bool lrng_raw_irqflags_entropy_store(u32 value) { return false; }
++#endif /* CONFIG_LRNG_RAW_IRQFLAGS_ENTROPY */
++
++#ifdef CONFIG_LRNG_RAW_RETIP_ENTROPY
++bool lrng_raw_retip_entropy_store(u32 value);
++#else /* CONFIG_LRNG_RAW_RETIP_ENTROPY */
++static inline bool lrng_raw_retip_entropy_store(u32 value) { return false; }
++#endif /* CONFIG_LRNG_RAW_RETIP_ENTROPY */
++
++#ifdef CONFIG_LRNG_RAW_REGS_ENTROPY
++bool lrng_raw_regs_entropy_store(u32 value);
++#else /* CONFIG_LRNG_RAW_REGS_ENTROPY */
++static inline bool lrng_raw_regs_entropy_store(u32 value) { return false; }
++#endif /* CONFIG_LRNG_RAW_REGS_ENTROPY */
++
++#ifdef CONFIG_LRNG_RAW_ARRAY
++bool lrng_raw_array_entropy_store(u32 value);
++#else /* CONFIG_LRNG_RAW_ARRAY */
++static inline bool lrng_raw_array_entropy_store(u32 value) { return false; }
++#endif /* CONFIG_LRNG_RAW_ARRAY */
++
++#ifdef CONFIG_LRNG_IRQ_PERF
++bool lrng_perf_time(u32 start);
++#else /* CONFIG_LRNG_IRQ_PERF */
++static inline bool lrng_perf_time(u32 start) { return false; }
++#endif /*CONFIG_LRNG_IRQ_PERF */
++
++#endif /* _LRNG_INTERNAL_H */
+diff -urN linux-5.15/drivers/char/lrng/lrng_kcapi.c linux-5.15-lrng/drivers/char/lrng/lrng_kcapi.c
+--- linux-5.15/drivers/char/lrng/lrng_kcapi.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_kcapi.c 2021-11-29 12:37:45.153278971 +1100
+@@ -0,0 +1,227 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * Backend for the LRNG providing the cryptographic primitives using the
++ * kernel crypto API.
++ *
++ * Copyright (C) 2018 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <crypto/hash.h>
++#include <crypto/rng.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/lrng.h>
++
++#include "lrng_kcapi_hash.h"
++
++static char *drng_name = NULL;
++module_param(drng_name, charp, 0444);
++MODULE_PARM_DESC(drng_name, "Kernel crypto API name of DRNG");
++
++static char *pool_hash = "sha512";
++module_param(pool_hash, charp, 0444);
++MODULE_PARM_DESC(pool_hash,
++ "Kernel crypto API name of hash or keyed message digest to read the entropy pool");
++
++static char *seed_hash = NULL;
++module_param(seed_hash, charp, 0444);
++MODULE_PARM_DESC(seed_hash,
++ "Kernel crypto API name of hash with output size equal to seedsize of DRNG to bring seed string to the size required by the DRNG");
++
++struct lrng_drng_info {
++ struct crypto_rng *kcapi_rng;
++ void *lrng_hash;
++};
++
++static void *lrng_kcapi_drng_hash_alloc(void)
++{
++ return lrng_kcapi_hash_alloc(pool_hash);
++}
++
++static int lrng_kcapi_drng_seed_helper(void *drng, const u8 *inbuf,
++ u32 inbuflen)
++{
++ SHASH_DESC_ON_STACK(shash, NULL);
++ struct lrng_drng_info *lrng_drng_info = (struct lrng_drng_info *)drng;
++ struct crypto_rng *kcapi_rng = lrng_drng_info->kcapi_rng;
++ void *hash = lrng_drng_info->lrng_hash;
++ u32 digestsize = lrng_kcapi_hash_digestsize(hash);
++ u8 digest[64] __aligned(8);
++ int ret;
++
++ if (!hash)
++ return crypto_rng_reset(kcapi_rng, inbuf, inbuflen);
++
++ BUG_ON(digestsize > sizeof(digest));
++
++ ret = lrng_kcapi_hash_init(shash, hash) ?:
++ lrng_kcapi_hash_update(shash, inbuf, inbuflen) ?:
++ lrng_kcapi_hash_final(shash, digest);
++ lrng_kcapi_hash_zero(shash);
++ if (ret)
++ return ret;
++
++ ret = crypto_rng_reset(kcapi_rng, digest, digestsize);
++ if (ret)
++ return ret;
++
++ memzero_explicit(digest, digestsize);
++ return 0;
++}
++
++static int lrng_kcapi_drng_generate_helper(void *drng, u8 *outbuf,
++ u32 outbuflen)
++{
++ struct lrng_drng_info *lrng_drng_info = (struct lrng_drng_info *)drng;
++ struct crypto_rng *kcapi_rng = lrng_drng_info->kcapi_rng;
++ int ret = crypto_rng_get_bytes(kcapi_rng, outbuf, outbuflen);
++
++ if (ret < 0)
++ return ret;
++
++ return outbuflen;
++}
++
++static void *lrng_kcapi_drng_alloc(u32 sec_strength)
++{
++ struct lrng_drng_info *lrng_drng_info;
++ struct crypto_rng *kcapi_rng;
++ int seedsize;
++ void *ret = ERR_PTR(-ENOMEM);
++
++ if (!drng_name) {
++ pr_err("DRNG name missing\n");
++ return ERR_PTR(-EINVAL);
++ }
++
++ if (!memcmp(drng_name, "drbg", 4) ||
++ !memcmp(drng_name, "stdrng", 6) ||
++ !memcmp(drng_name, "jitterentropy_rng", 17)) {
++ pr_err("Refusing to load the requested random number generator\n");
++ return ERR_PTR(-EINVAL);
++ }
++
++ lrng_drng_info = kmalloc(sizeof(*lrng_drng_info), GFP_KERNEL);
++ if (!lrng_drng_info)
++ return ERR_PTR(-ENOMEM);
++
++ kcapi_rng = crypto_alloc_rng(drng_name, 0, 0);
++ if (IS_ERR(kcapi_rng)) {
++ pr_err("DRNG %s cannot be allocated\n", drng_name);
++ ret = ERR_CAST(kcapi_rng);
++ goto free;
++ }
++ lrng_drng_info->kcapi_rng = kcapi_rng;
++
++ seedsize = crypto_rng_seedsize(kcapi_rng);
++
++ if (sec_strength > seedsize)
++ pr_info("Seedsize DRNG (%u bits) lower than security strength of LRNG noise source (%u bits)\n",
++ crypto_rng_seedsize(kcapi_rng) * 8, sec_strength * 8);
++
++ if (seedsize) {
++ void *lrng_hash;
++
++ if (!seed_hash) {
++ switch (seedsize) {
++ case 32:
++ seed_hash = "sha256";
++ break;
++ case 48:
++ seed_hash = "sha384";
++ break;
++ case 64:
++ seed_hash = "sha512";
++ break;
++ default:
++ pr_err("Seed size %d cannot be processed\n",
++ seedsize);
++ goto dealloc;
++ }
++ }
++
++ lrng_hash = lrng_kcapi_hash_alloc(seed_hash);
++ if (IS_ERR(lrng_hash)) {
++ ret = ERR_CAST(lrng_hash);
++ goto dealloc;
++ }
++
++ if (seedsize != lrng_kcapi_hash_digestsize(lrng_hash)) {
++ pr_err("Seed hash output size not equal to DRNG seed size\n");
++ lrng_kcapi_hash_dealloc(lrng_hash);
++ ret = ERR_PTR(-EINVAL);
++ goto dealloc;
++ }
++
++ lrng_drng_info->lrng_hash = lrng_hash;
++
++ pr_info("Seed hash %s allocated\n", seed_hash);
++ } else {
++ lrng_drng_info->lrng_hash = NULL;
++ }
++
++ pr_info("Kernel crypto API DRNG %s allocated\n", drng_name);
++
++ return lrng_drng_info;
++
++dealloc:
++ crypto_free_rng(kcapi_rng);
++free:
++ kfree(lrng_drng_info);
++ return ret;
++}
++
++static void lrng_kcapi_drng_dealloc(void *drng)
++{
++ struct lrng_drng_info *lrng_drng_info = (struct lrng_drng_info *)drng;
++ struct crypto_rng *kcapi_rng = lrng_drng_info->kcapi_rng;
++
++ crypto_free_rng(kcapi_rng);
++ if (lrng_drng_info->lrng_hash)
++ lrng_kcapi_hash_dealloc(lrng_drng_info->lrng_hash);
++ kfree(lrng_drng_info);
++ pr_info("DRNG %s deallocated\n", drng_name);
++}
++
++static const char *lrng_kcapi_drng_name(void)
++{
++ return drng_name;
++}
++
++static const char *lrng_kcapi_pool_hash(void)
++{
++ return pool_hash;
++}
++
++static const struct lrng_crypto_cb lrng_kcapi_crypto_cb = {
++ .lrng_drng_name = lrng_kcapi_drng_name,
++ .lrng_hash_name = lrng_kcapi_pool_hash,
++ .lrng_drng_alloc = lrng_kcapi_drng_alloc,
++ .lrng_drng_dealloc = lrng_kcapi_drng_dealloc,
++ .lrng_drng_seed_helper = lrng_kcapi_drng_seed_helper,
++ .lrng_drng_generate_helper = lrng_kcapi_drng_generate_helper,
++ .lrng_hash_alloc = lrng_kcapi_drng_hash_alloc,
++ .lrng_hash_dealloc = lrng_kcapi_hash_dealloc,
++ .lrng_hash_digestsize = lrng_kcapi_hash_digestsize,
++ .lrng_hash_init = lrng_kcapi_hash_init,
++ .lrng_hash_update = lrng_kcapi_hash_update,
++ .lrng_hash_final = lrng_kcapi_hash_final,
++ .lrng_hash_desc_zero = lrng_kcapi_hash_zero,
++};
++
++static int __init lrng_kcapi_init(void)
++{
++ return lrng_set_drng_cb(&lrng_kcapi_crypto_cb);
++}
++static void __exit lrng_kcapi_exit(void)
++{
++ lrng_set_drng_cb(NULL);
++}
++
++late_initcall(lrng_kcapi_init);
++module_exit(lrng_kcapi_exit);
++MODULE_LICENSE("Dual BSD/GPL");
++MODULE_AUTHOR("Stephan Mueller <smueller@chronox.de>");
++MODULE_DESCRIPTION("Linux Random Number Generator - kernel crypto API DRNG backend");
+diff -urN linux-5.15/drivers/char/lrng/lrng_kcapi_hash.c linux-5.15-lrng/drivers/char/lrng/lrng_kcapi_hash.c
+--- linux-5.15/drivers/char/lrng/lrng_kcapi_hash.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_kcapi_hash.c 2021-11-29 12:37:24.863279049 +1100
+@@ -0,0 +1,103 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * Backend for providing the hash primitive using the kernel crypto API.
++ *
++ * Copyright (C) 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <crypto/hash.h>
++
++#include "lrng_kcapi_hash.h"
++
++struct lrng_hash_info {
++ struct crypto_shash *tfm;
++};
++
++static inline void _lrng_kcapi_hash_free(struct lrng_hash_info *lrng_hash)
++{
++ struct crypto_shash *tfm = lrng_hash->tfm;
++
++ crypto_free_shash(tfm);
++ kfree(lrng_hash);
++}
++
++void *lrng_kcapi_hash_alloc(const char *name)
++{
++ struct lrng_hash_info *lrng_hash;
++ struct crypto_shash *tfm;
++ int ret;
++
++ if (!name) {
++ pr_err("Hash name missing\n");
++ return ERR_PTR(-EINVAL);
++ }
++
++ tfm = crypto_alloc_shash(name, 0, 0);
++ if (IS_ERR(tfm)) {
++ pr_err("could not allocate hash %s\n", name);
++ return ERR_CAST(tfm);
++ }
++
++ ret = sizeof(struct lrng_hash_info);
++ lrng_hash = kmalloc(ret, GFP_KERNEL);
++ if (!lrng_hash) {
++ crypto_free_shash(tfm);
++ return ERR_PTR(-ENOMEM);
++ }
++
++ lrng_hash->tfm = tfm;
++
++ pr_info("Hash %s allocated\n", name);
++
++ return lrng_hash;
++}
++EXPORT_SYMBOL(lrng_kcapi_hash_alloc);
++
++u32 lrng_kcapi_hash_digestsize(void *hash)
++{
++ struct lrng_hash_info *lrng_hash = (struct lrng_hash_info *)hash;
++ struct crypto_shash *tfm = lrng_hash->tfm;
++
++ return crypto_shash_digestsize(tfm);
++}
++EXPORT_SYMBOL(lrng_kcapi_hash_digestsize);
++
++void lrng_kcapi_hash_dealloc(void *hash)
++{
++ struct lrng_hash_info *lrng_hash = (struct lrng_hash_info *)hash;
++
++ _lrng_kcapi_hash_free(lrng_hash);
++ pr_info("Hash deallocated\n");
++}
++EXPORT_SYMBOL(lrng_kcapi_hash_dealloc);
++
++int lrng_kcapi_hash_init(struct shash_desc *shash, void *hash)
++{
++ struct lrng_hash_info *lrng_hash = (struct lrng_hash_info *)hash;
++ struct crypto_shash *tfm = lrng_hash->tfm;
++
++ shash->tfm = tfm;
++ return crypto_shash_init(shash);
++}
++EXPORT_SYMBOL(lrng_kcapi_hash_init);
++
++int lrng_kcapi_hash_update(struct shash_desc *shash, const u8 *inbuf,
++ u32 inbuflen)
++{
++ return crypto_shash_update(shash, inbuf, inbuflen);
++}
++EXPORT_SYMBOL(lrng_kcapi_hash_update);
++
++int lrng_kcapi_hash_final(struct shash_desc *shash, u8 *digest)
++{
++ return crypto_shash_final(shash, digest);
++}
++EXPORT_SYMBOL(lrng_kcapi_hash_final);
++
++void lrng_kcapi_hash_zero(struct shash_desc *shash)
++{
++ shash_desc_zero(shash);
++}
++EXPORT_SYMBOL(lrng_kcapi_hash_zero);
+diff -urN linux-5.15/drivers/char/lrng/lrng_kcapi_hash.h linux-5.15-lrng/drivers/char/lrng/lrng_kcapi_hash.h
+--- linux-5.15/drivers/char/lrng/lrng_kcapi_hash.h 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_kcapi_hash.h 2021-11-29 12:37:24.863279049 +1100
+@@ -0,0 +1,20 @@
++/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
++/*
++ * Copyright (C) 2020 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#ifndef _LRNG_KCAPI_HASH_H
++#define _LRNG_KCAPI_HASH_H
++
++#include <linux/module.h>
++
++void *lrng_kcapi_hash_alloc(const char *name);
++u32 lrng_kcapi_hash_digestsize(void *hash);
++void lrng_kcapi_hash_dealloc(void *hash);
++int lrng_kcapi_hash_init(struct shash_desc *shash, void *hash);
++int lrng_kcapi_hash_update(struct shash_desc *shash, const u8 *inbuf,
++ u32 inbuflen);
++int lrng_kcapi_hash_final(struct shash_desc *shash, u8 *digest);
++void lrng_kcapi_hash_zero(struct shash_desc *shash);
++
++#endif /* _LRNG_KCAPI_HASH_H */
+diff -urN linux-5.15/drivers/char/lrng/lrng_numa.c linux-5.15-lrng/drivers/char/lrng/lrng_numa.c
+--- linux-5.15/drivers/char/lrng/lrng_numa.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_numa.c 2021-11-29 12:37:08.753279110 +1100
+@@ -0,0 +1,122 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * LRNG NUMA support
++ *
++ * Copyright (C) 2016 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <linux/lrng.h>
++#include <linux/slab.h>
++
++#include "lrng_internal.h"
++
++static struct lrng_drng **lrng_drng __read_mostly = NULL;
++
++struct lrng_drng **lrng_drng_instances(void)
++{
++ return smp_load_acquire(&lrng_drng);
++}
++
++/* Allocate the data structures for the per-NUMA node DRNGs */
++static void _lrng_drngs_numa_alloc(struct work_struct *work)
++{
++ struct lrng_drng **drngs;
++ struct lrng_drng *lrng_drng_init = lrng_drng_init_instance();
++ u32 node;
++ bool init_drng_used = false;
++
++ mutex_lock(&lrng_crypto_cb_update);
++
++ /* per-NUMA-node DRNGs are already present */
++ if (lrng_drng)
++ goto unlock;
++
++ drngs = kcalloc(nr_node_ids, sizeof(void *), GFP_KERNEL|__GFP_NOFAIL);
++ for_each_online_node(node) {
++ struct lrng_drng *drng;
++
++ if (!init_drng_used) {
++ drngs[node] = lrng_drng_init;
++ init_drng_used = true;
++ continue;
++ }
++
++ drng = kmalloc_node(sizeof(struct lrng_drng),
++ GFP_KERNEL|__GFP_NOFAIL, node);
++ memset(drng, 0, sizeof(lrng_drng));
++
++ drng->crypto_cb = lrng_drng_init->crypto_cb;
++ drng->drng = drng->crypto_cb->lrng_drng_alloc(
++ LRNG_DRNG_SECURITY_STRENGTH_BYTES);
++ if (IS_ERR(drng->drng)) {
++ kfree(drng);
++ goto err;
++ }
++
++ drng->hash = drng->crypto_cb->lrng_hash_alloc();
++ if (IS_ERR(drng->hash)) {
++ drng->crypto_cb->lrng_drng_dealloc(drng->drng);
++ kfree(drng);
++ goto err;
++ }
++
++ mutex_init(&drng->lock);
++ spin_lock_init(&drng->spin_lock);
++ rwlock_init(&drng->hash_lock);
++
++ /*
++ * Switch the hash used by the per-CPU pool.
++ * We do not need to lock the new hash as it is not usable yet
++ * due to **drngs not yet being initialized.
++ */
++ if (lrng_pcpu_switch_hash(node, drng->crypto_cb, drng->hash,
++ &lrng_cc20_crypto_cb))
++ goto err;
++
++ /*
++ * No reseeding of NUMA DRNGs from previous DRNGs as this
++ * would complicate the code. Let it simply reseed.
++ */
++ lrng_drng_reset(drng);
++ drngs[node] = drng;
++
++ lrng_pool_inc_numa_node();
++ pr_info("DRNG and entropy pool read hash for NUMA node %d allocated\n",
++ node);
++ }
++
++ /* counterpart to smp_load_acquire in lrng_drng_instances */
++ if (!cmpxchg_release(&lrng_drng, NULL, drngs)) {
++ lrng_pool_all_numa_nodes_seeded(false);
++ goto unlock;
++ }
++
++err:
++ for_each_online_node(node) {
++ struct lrng_drng *drng = drngs[node];
++
++ if (drng == lrng_drng_init)
++ continue;
++
++ if (drng) {
++ lrng_pcpu_switch_hash(node, &lrng_cc20_crypto_cb, NULL,
++ drng->crypto_cb);
++ drng->crypto_cb->lrng_hash_dealloc(drng->hash);
++ drng->crypto_cb->lrng_drng_dealloc(drng->drng);
++ kfree(drng);
++ }
++ }
++ kfree(drngs);
++
++unlock:
++ mutex_unlock(&lrng_crypto_cb_update);
++}
++
++static DECLARE_WORK(lrng_drngs_numa_alloc_work, _lrng_drngs_numa_alloc);
++
++void lrng_drngs_numa_alloc(void)
++{
++ schedule_work(&lrng_drngs_numa_alloc_work);
++}
+diff -urN linux-5.15/drivers/char/lrng/lrng_proc.c linux-5.15-lrng/drivers/char/lrng/lrng_proc.c
+--- linux-5.15/drivers/char/lrng/lrng_proc.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_proc.c 2021-11-29 12:37:03.083279132 +1100
+@@ -0,0 +1,199 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * LRNG proc and sysctl interfaces
++ *
++ * Copyright (C) 2016 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#include <linux/lrng.h>
++#include <linux/proc_fs.h>
++#include <linux/seq_file.h>
++#include <linux/sysctl.h>
++#include <linux/uuid.h>
++
++#include "lrng_internal.h"
++
++/*
++ * This function is used to return both the bootid UUID, and random
++ * UUID. The difference is in whether table->data is NULL; if it is,
++ * then a new UUID is generated and returned to the user.
++ *
++ * If the user accesses this via the proc interface, the UUID will be
++ * returned as an ASCII string in the standard UUID format; if via the
++ * sysctl system call, as 16 bytes of binary data.
++ */
++static int lrng_proc_do_uuid(struct ctl_table *table, int write,
++ void *buffer, size_t *lenp, loff_t *ppos)
++{
++ struct ctl_table fake_table;
++ unsigned char buf[64], tmp_uuid[16], *uuid;
++
++ uuid = table->data;
++ if (!uuid) {
++ uuid = tmp_uuid;
++ generate_random_uuid(uuid);
++ } else {
++ static DEFINE_SPINLOCK(bootid_spinlock);
++
++ spin_lock(&bootid_spinlock);
++ if (!uuid[8])
++ generate_random_uuid(uuid);
++ spin_unlock(&bootid_spinlock);
++ }
++
++ sprintf(buf, "%pU", uuid);
++
++ fake_table.data = buf;
++ fake_table.maxlen = sizeof(buf);
++
++ return proc_dostring(&fake_table, write, buffer, lenp, ppos);
++}
++
++static int lrng_proc_do_entropy(struct ctl_table *table, int write,
++ void *buffer, size_t *lenp, loff_t *ppos)
++{
++ struct ctl_table fake_table;
++ int entropy_count;
++
++ entropy_count = lrng_avail_entropy();
++
++ fake_table.data = &entropy_count;
++ fake_table.maxlen = sizeof(entropy_count);
++
++ return proc_dointvec(&fake_table, write, buffer, lenp, ppos);
++}
++
++static int lrng_proc_do_poolsize(struct ctl_table *table, int write,
++ void *buffer, size_t *lenp, loff_t *ppos)
++{
++ struct ctl_table fake_table;
++ int entropy_count;
++
++ /* LRNG can at most retain entropy in per-CPU pools and aux pool */
++ entropy_count = lrng_get_digestsize() + lrng_pcpu_avail_pool_size();
++
++ fake_table.data = &entropy_count;
++ fake_table.maxlen = sizeof(entropy_count);
++
++ return proc_dointvec(&fake_table, write, buffer, lenp, ppos);
++}
++
++static int lrng_min_write_thresh;
++static int lrng_max_write_thresh = (LRNG_WRITE_WAKEUP_ENTROPY << 3);
++static char lrng_sysctl_bootid[16];
++static int lrng_drng_reseed_max_min;
++
++void lrng_proc_update_max_write_thresh(u32 new_digestsize)
++{
++ lrng_max_write_thresh = (int)new_digestsize;
++ mb();
++}
++
++struct ctl_table random_table[] = {
++ {
++ .procname = "poolsize",
++ .maxlen = sizeof(int),
++ .mode = 0444,
++ .proc_handler = lrng_proc_do_poolsize,
++ },
++ {
++ .procname = "entropy_avail",
++ .maxlen = sizeof(int),
++ .mode = 0444,
++ .proc_handler = lrng_proc_do_entropy,
++ },
++ {
++ .procname = "write_wakeup_threshold",
++ .data = &lrng_write_wakeup_bits,
++ .maxlen = sizeof(int),
++ .mode = 0644,
++ .proc_handler = proc_dointvec_minmax,
++ .extra1 = &lrng_min_write_thresh,
++ .extra2 = &lrng_max_write_thresh,
++ },
++ {
++ .procname = "boot_id",
++ .data = &lrng_sysctl_bootid,
++ .maxlen = 16,
++ .mode = 0444,
++ .proc_handler = lrng_proc_do_uuid,
++ },
++ {
++ .procname = "uuid",
++ .maxlen = 16,
++ .mode = 0444,
++ .proc_handler = lrng_proc_do_uuid,
++ },
++ {
++ .procname = "urandom_min_reseed_secs",
++ .data = &lrng_drng_reseed_max_time,
++ .maxlen = sizeof(int),
++ .mode = 0644,
++ .proc_handler = proc_dointvec,
++ .extra1 = &lrng_drng_reseed_max_min,
++ },
++ { }
++};
++
++/* Number of online DRNGs */
++static u32 numa_drngs = 1;
++
++void lrng_pool_inc_numa_node(void)
++{
++ numa_drngs++;
++}
++
++static int lrng_proc_type_show(struct seq_file *m, void *v)
++{
++ struct lrng_drng *lrng_drng_init = lrng_drng_init_instance();
++ unsigned long flags = 0;
++ unsigned char buf[250], irq[200], aux[100], cpu[90], jent[45];
++
++ lrng_drng_lock(lrng_drng_init, &flags);
++ snprintf(buf, sizeof(buf),
++ "DRNG name: %s\n"
++ "LRNG security strength in bits: %d\n"
++ "number of DRNG instances: %u\n"
++ "Standards compliance: %s\n"
++ "Entropy Sources: %s%s%sAuxiliary\n"
++ "LRNG minimally seeded: %s\n"
++ "LRNG fully seeded: %s\n",
++ lrng_drng_init->crypto_cb->lrng_drng_name(),
++ lrng_security_strength(),
++ numa_drngs,
++ lrng_sp80090c_compliant() ? "SP800-90C " : "",
++ IS_ENABLED(CONFIG_LRNG_IRQ) ? "IRQ " : "",
++ IS_ENABLED(CONFIG_LRNG_JENT) ? "JitterRNG " : "",
++ IS_ENABLED(CONFIG_LRNG_CPU) ? "CPU " : "",
++ lrng_state_min_seeded() ? "true" : "false",
++ lrng_state_fully_seeded() ? "true" : "false");
++
++ lrng_aux_es_state(aux, sizeof(aux));
++
++ irq[0] = '\0';
++ lrng_irq_es_state(irq, sizeof(irq));
++
++ jent[0] = '\0';
++ lrng_jent_es_state(jent, sizeof(jent));
++
++ cpu[0] = '\0';
++ lrng_arch_es_state(cpu, sizeof(cpu));
++
++ lrng_drng_unlock(lrng_drng_init, &flags);
++
++ seq_write(m, buf, strlen(buf));
++ seq_write(m, aux, strlen(aux));
++ seq_write(m, irq, strlen(irq));
++ seq_write(m, jent, strlen(jent));
++ seq_write(m, cpu, strlen(cpu));
++
++ return 0;
++}
++
++static int __init lrng_proc_type_init(void)
++{
++ proc_create_single("lrng_type", 0444, NULL, &lrng_proc_type_show);
++ return 0;
++}
++
++module_init(lrng_proc_type_init);
+diff -urN linux-5.15/drivers/char/lrng/lrng_selftest.c linux-5.15-lrng/drivers/char/lrng/lrng_selftest.c
+--- linux-5.15/drivers/char/lrng/lrng_selftest.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_selftest.c 2021-11-29 12:38:26.603278813 +1100
+@@ -0,0 +1,386 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * LRNG power-on and on-demand self-test
++ *
++ * Copyright (C) 2016 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++/*
++ * In addition to the self-tests below, the following LRNG components
++ * are covered with self-tests during regular operation:
++ *
++ * * power-on self-test: SP800-90A DRBG provided by the Linux kernel crypto API
++ * * power-on self-test: PRNG provided by the Linux kernel crypto API
++ * * runtime test: Raw noise source data testing including SP800-90B compliant
++ * tests when enabling CONFIG_LRNG_HEALTH_TESTS
++ *
++ * Additional developer tests present with LRNG code:
++ * * SP800-90B APT and RCT test enforcement validation when enabling
++ * CONFIG_LRNG_APT_BROKEN or CONFIG_LRNG_RCT_BROKEN.
++ * * Collection of raw entropy from the interrupt noise source when enabling
++ * CONFIG_LRNG_TESTING and pulling the data from the kernel with the provided
++ * interface.
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <linux/module.h>
++#include <linux/lrng.h>
++#include <linux/slab.h>
++
++#include "lrng_chacha20.h"
++#include "lrng_internal.h"
++
++#define LRNG_SELFTEST_PASSED 0
++#define LRNG_SEFLTEST_ERROR_TIME (1 << 0)
++#define LRNG_SEFLTEST_ERROR_CHACHA20 (1 << 1)
++#define LRNG_SEFLTEST_ERROR_HASH (1 << 2)
++#define LRNG_SEFLTEST_ERROR_GCD (1 << 3)
++#define LRNG_SELFTEST_NOT_EXECUTED 0xffffffff
++
++#ifdef CONFIG_LRNG_IRQ
++
++#include "lrng_es_irq.h"
++
++static u32 lrng_data_selftest_ptr = 0;
++static u32 lrng_data_selftest[LRNG_DATA_ARRAY_SIZE];
++
++static inline void lrng_data_process_selftest_insert(u32 time)
++{
++ u32 ptr = lrng_data_selftest_ptr++ & LRNG_DATA_WORD_MASK;
++ unsigned int array = lrng_data_idx2array(ptr);
++ unsigned int slot = lrng_data_idx2slot(ptr);
++
++ /* zeroization of slot to ensure the following OR adds the data */
++ lrng_data_selftest[array] &=
++ ~(lrng_data_slot_val(0xffffffff & LRNG_DATA_SLOTSIZE_MASK,
++ slot));
++ lrng_data_selftest[array] |=
++ lrng_data_slot_val(time & LRNG_DATA_SLOTSIZE_MASK, slot);
++}
++
++static inline void lrng_data_process_selftest_u32(u32 data)
++{
++ u32 pre_ptr, ptr, mask;
++ unsigned int pre_array;
++
++ /* Increment pointer by number of slots taken for input value */
++ lrng_data_selftest_ptr += LRNG_DATA_SLOTS_PER_UINT;
++
++ /* ptr to current unit */
++ ptr = lrng_data_selftest_ptr;
++
++ lrng_pcpu_split_u32(&ptr, &pre_ptr, &mask);
++
++ /* MSB of data go into previous unit */
++ pre_array = lrng_data_idx2array(pre_ptr);
++ /* zeroization of slot to ensure the following OR adds the data */
++ lrng_data_selftest[pre_array] &= ~(0xffffffff & ~mask);
++ lrng_data_selftest[pre_array] |= data & ~mask;
++
++ /* LSB of data go into current unit */
++ lrng_data_selftest[lrng_data_idx2array(ptr)] = data & mask;
++}
++
++static unsigned int lrng_data_process_selftest(void)
++{
++ u32 time;
++ u32 idx_zero_compare = (0 << 0) | (1 << 8) | (2 << 16) | (3 << 24);
++ u32 idx_one_compare = (4 << 0) | (5 << 8) | (6 << 16) | (7 << 24);
++ u32 idx_last_compare =
++ (((LRNG_DATA_NUM_VALUES - 4) & LRNG_DATA_SLOTSIZE_MASK) << 0) |
++ (((LRNG_DATA_NUM_VALUES - 3) & LRNG_DATA_SLOTSIZE_MASK) << 8) |
++ (((LRNG_DATA_NUM_VALUES - 2) & LRNG_DATA_SLOTSIZE_MASK) << 16) |
++ (((LRNG_DATA_NUM_VALUES - 1) & LRNG_DATA_SLOTSIZE_MASK) << 24);
++
++ (void)idx_one_compare;
++
++ /* "poison" the array to verify the operation of the zeroization */
++ lrng_data_selftest[0] = 0xffffffff;
++ lrng_data_selftest[1] = 0xffffffff;
++
++ lrng_data_process_selftest_insert(0);
++ /*
++ * Note, when using lrng_data_process_u32() on unaligned ptr,
++ * the first slots will go into next word, and the last slots go
++ * into the previous word.
++ */
++ lrng_data_process_selftest_u32((4 << 0) | (1 << 8) | (2 << 16) |
++ (3 << 24));
++ lrng_data_process_selftest_insert(5);
++ lrng_data_process_selftest_insert(6);
++ lrng_data_process_selftest_insert(7);
++
++ if ((lrng_data_selftest[0] != idx_zero_compare) ||
++ (lrng_data_selftest[1] != idx_one_compare))
++ goto err;
++
++ /* Reset for next test */
++ lrng_data_selftest[0] = 0;
++ lrng_data_selftest[1] = 0;
++ lrng_data_selftest_ptr = 0;
++
++ for (time = 0; time < LRNG_DATA_NUM_VALUES; time++)
++ lrng_data_process_selftest_insert(time);
++
++ if ((lrng_data_selftest[0] != idx_zero_compare) ||
++ (lrng_data_selftest[1] != idx_one_compare) ||
++ (lrng_data_selftest[LRNG_DATA_ARRAY_SIZE - 1] != idx_last_compare))
++ goto err;
++
++ return LRNG_SELFTEST_PASSED;
++
++err:
++ pr_err("LRNG data array self-test FAILED\n");
++ return LRNG_SEFLTEST_ERROR_TIME;
++}
++
++static unsigned int lrng_gcd_selftest(void)
++{
++ u32 history[10];
++ unsigned int i;
++
++#define LRNG_GCD_SELFTEST 3
++ for (i = 0; i < ARRAY_SIZE(history); i++)
++ history[i] = i * LRNG_GCD_SELFTEST;
++
++ if (lrng_gcd_analyze(history, ARRAY_SIZE(history)) == LRNG_GCD_SELFTEST)
++ return LRNG_SELFTEST_PASSED;
++
++ pr_err("LRNG GCD self-test FAILED\n");
++ return LRNG_SEFLTEST_ERROR_GCD;
++}
++
++#else /* CONFIG_LRNG_IRQ */
++
++static unsigned int lrng_data_process_selftest(void)
++{
++ return LRNG_SELFTEST_PASSED;
++}
++
++static unsigned int lrng_gcd_selftest(void)
++{
++ return LRNG_SELFTEST_PASSED;
++}
++
++#endif /* CONFIG_LRNG_IRQ */
++
++static inline void lrng_selftest_bswap32(u32 *ptr, u32 words)
++{
++ u32 i;
++
++ /* Byte-swap data which is an LE representation */
++ for (i = 0; i < words; i++) {
++ __le32 *p = (__le32 *)ptr;
++
++ *p = cpu_to_le32(*ptr);
++ ptr++;
++ }
++}
++
++/* The test vectors are taken from crypto/testmgr.h */
++static unsigned int lrng_hash_selftest(void)
++{
++ SHASH_DESC_ON_STACK(shash, NULL);
++ const struct lrng_crypto_cb *crypto_cb = &lrng_cc20_crypto_cb;
++ static const u8 lrng_hash_selftest_result[] =
++#ifdef CONFIG_CRYPTO_LIB_SHA256
++ { 0xba, 0x78, 0x16, 0xbf, 0x8f, 0x01, 0xcf, 0xea,
++ 0x41, 0x41, 0x40, 0xde, 0x5d, 0xae, 0x22, 0x23,
++ 0xb0, 0x03, 0x61, 0xa3, 0x96, 0x17, 0x7a, 0x9c,
++ 0xb4, 0x10, 0xff, 0x61, 0xf2, 0x00, 0x15, 0xad };
++#else /* CONFIG_CRYPTO_LIB_SHA256 */
++ { 0xa9, 0x99, 0x3e, 0x36, 0x47, 0x06, 0x81, 0x6a, 0xba, 0x3e,
++ 0x25, 0x71, 0x78, 0x50, 0xc2, 0x6c, 0x9c, 0xd0, 0xd8, 0x9d };
++#endif /* CONFIG_CRYPTO_LIB_SHA256 */
++ static const u8 hash_input[] = { 0x61, 0x62, 0x63 }; /* "abc" */
++ u8 digest[sizeof(lrng_hash_selftest_result)] __aligned(sizeof(u32));
++
++ BUG_ON(sizeof(digest) != crypto_cb->lrng_hash_digestsize(NULL));
++
++ if (!crypto_cb->lrng_hash_init(shash, NULL) &&
++ !crypto_cb->lrng_hash_update(shash, hash_input,
++ sizeof(hash_input)) &&
++ !crypto_cb->lrng_hash_final(shash, digest) &&
++ !memcmp(digest, lrng_hash_selftest_result, sizeof(digest)))
++ return 0;
++
++ pr_err("LRNG %s Hash self-test FAILED\n", crypto_cb->lrng_hash_name());
++ return LRNG_SEFLTEST_ERROR_HASH;
++}
++
++/*
++ * The test vectors were generated using the ChaCha20 DRNG from
++ * https://www.chronox.de/chacha20.html
++ */
++static unsigned int lrng_chacha20_drng_selftest(void)
++{
++ const struct lrng_crypto_cb *crypto_cb = &lrng_cc20_crypto_cb;
++ u8 seed[CHACHA_KEY_SIZE * 2] = {
++ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
++ 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
++ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
++ 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
++ 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
++ 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
++ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
++ 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
++ };
++ struct chacha20_block chacha20;
++ int ret;
++ u8 outbuf[CHACHA_KEY_SIZE * 2] __aligned(sizeof(u32));
++
++ /*
++ * Expected result when ChaCha20 DRNG state is zero:
++ * * constants are set to "expand 32-byte k"
++ * * remaining state is 0
++ * and pulling one half ChaCha20 DRNG block.
++ */
++ static const u8 expected_halfblock[CHACHA_KEY_SIZE] = {
++ 0x76, 0xb8, 0xe0, 0xad, 0xa0, 0xf1, 0x3d, 0x90,
++ 0x40, 0x5d, 0x6a, 0xe5, 0x53, 0x86, 0xbd, 0x28,
++ 0xbd, 0xd2, 0x19, 0xb8, 0xa0, 0x8d, 0xed, 0x1a,
++ 0xa8, 0x36, 0xef, 0xcc, 0x8b, 0x77, 0x0d, 0xc7 };
++
++ /*
++ * Expected result when ChaCha20 DRNG state is zero:
++ * * constants are set to "expand 32-byte k"
++ * * remaining state is 0
++ * followed by a reseed with two keyblocks
++ * 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
++ * 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
++ * 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
++ * 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
++ * 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
++ * 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
++ * 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
++ * 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f
++ * and pulling one ChaCha20 DRNG block.
++ */
++ static const u8 expected_oneblock[CHACHA_KEY_SIZE * 2] = {
++ 0xe3, 0xb0, 0x8a, 0xcc, 0x34, 0xc3, 0x17, 0x0e,
++ 0xc3, 0xd8, 0xc3, 0x40, 0xe7, 0x73, 0xe9, 0x0d,
++ 0xd1, 0x62, 0xa3, 0x5d, 0x7d, 0xf2, 0xf1, 0x4a,
++ 0x24, 0x42, 0xb7, 0x1e, 0xb0, 0x05, 0x17, 0x07,
++ 0xb9, 0x35, 0x10, 0x69, 0x8b, 0x46, 0xfb, 0x51,
++ 0xe9, 0x91, 0x3f, 0x46, 0xf2, 0x4d, 0xea, 0xd0,
++ 0x81, 0xc1, 0x1b, 0xa9, 0x5d, 0x52, 0x91, 0x5f,
++ 0xcd, 0xdc, 0xc6, 0xd6, 0xc3, 0x7c, 0x50, 0x23 };
++
++ /*
++ * Expected result when ChaCha20 DRNG state is zero:
++ * * constants are set to "expand 32-byte k"
++ * * remaining state is 0
++ * followed by a reseed with one key block plus one byte
++ * 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
++ * 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
++ * 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
++ * 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
++ * 0x20
++ * and pulling less than one ChaCha20 DRNG block.
++ */
++ static const u8 expected_block_nonalinged[CHACHA_KEY_SIZE + 4] = {
++ 0x9c, 0xfc, 0x5e, 0x31, 0x21, 0x62, 0x11, 0x85,
++ 0xd3, 0x77, 0xd3, 0x69, 0x0f, 0xa8, 0x16, 0x55,
++ 0xb4, 0x4c, 0xf6, 0x52, 0xf3, 0xa8, 0x37, 0x99,
++ 0x38, 0x76, 0xa0, 0x66, 0xec, 0xbb, 0xce, 0xa9,
++ 0x9c, 0x95, 0xa1, 0xfd };
++
++ BUILD_BUG_ON(sizeof(seed) % sizeof(u32));
++
++ memset(&chacha20, 0, sizeof(chacha20));
++ lrng_cc20_init_rfc7539(&chacha20);
++ lrng_selftest_bswap32((u32 *)seed, sizeof(seed) / sizeof(u32));
++
++ /* Generate with zero state */
++ ret = crypto_cb->lrng_drng_generate_helper(&chacha20, outbuf,
++ sizeof(expected_halfblock));
++ if (ret != sizeof(expected_halfblock))
++ goto err;
++ if (memcmp(outbuf, expected_halfblock, sizeof(expected_halfblock)))
++ goto err;
++
++ /* Clear state of DRNG */
++ memset(&chacha20.key.u[0], 0, 48);
++
++ /* Reseed with 2 key blocks */
++ ret = crypto_cb->lrng_drng_seed_helper(&chacha20, seed,
++ sizeof(expected_oneblock));
++ if (ret < 0)
++ goto err;
++ ret = crypto_cb->lrng_drng_generate_helper(&chacha20, outbuf,
++ sizeof(expected_oneblock));
++ if (ret != sizeof(expected_oneblock))
++ goto err;
++ if (memcmp(outbuf, expected_oneblock, sizeof(expected_oneblock)))
++ goto err;
++
++ /* Clear state of DRNG */
++ memset(&chacha20.key.u[0], 0, 48);
++
++ /* Reseed with 1 key block and one byte */
++ ret = crypto_cb->lrng_drng_seed_helper(&chacha20, seed,
++ sizeof(expected_block_nonalinged));
++ if (ret < 0)
++ goto err;
++ ret = crypto_cb->lrng_drng_generate_helper(&chacha20, outbuf,
++ sizeof(expected_block_nonalinged));
++ if (ret != sizeof(expected_block_nonalinged))
++ goto err;
++ if (memcmp(outbuf, expected_block_nonalinged,
++ sizeof(expected_block_nonalinged)))
++ goto err;
++
++ return LRNG_SELFTEST_PASSED;
++
++err:
++ pr_err("LRNG ChaCha20 DRNG self-test FAILED\n");
++ return LRNG_SEFLTEST_ERROR_CHACHA20;
++}
++
++static unsigned int lrng_selftest_status = LRNG_SELFTEST_NOT_EXECUTED;
++
++static int lrng_selftest(void)
++{
++ unsigned int ret = lrng_data_process_selftest();
++
++ ret |= lrng_chacha20_drng_selftest();
++ ret |= lrng_hash_selftest();
++ ret |= lrng_gcd_selftest();
++
++ if (ret) {
++ if (IS_ENABLED(CONFIG_LRNG_SELFTEST_PANIC))
++ panic("LRNG self-tests failed: %u\n", ret);
++ } else {
++ pr_info("LRNG self-tests passed\n");
++ }
++
++ lrng_selftest_status = ret;
++
++ if (lrng_selftest_status)
++ return -EFAULT;
++ return 0;
++}
++
++#ifdef CONFIG_SYSFS
++/* Re-perform self-test when any value is written to the sysfs file. */
++static int lrng_selftest_sysfs_set(const char *val,
++ const struct kernel_param *kp)
++{
++ return lrng_selftest();
++}
++
++static const struct kernel_param_ops lrng_selftest_sysfs = {
++ .set = lrng_selftest_sysfs_set,
++ .get = param_get_uint,
++};
++module_param_cb(selftest_status, &lrng_selftest_sysfs, &lrng_selftest_status,
++ 0644);
++#endif /* CONFIG_SYSFS */
++
++static int __init lrng_selftest_init(void)
++{
++ return lrng_selftest();
++}
++
++module_init(lrng_selftest_init);
+diff -urN linux-5.15/drivers/char/lrng/lrng_switch.c linux-5.15-lrng/drivers/char/lrng/lrng_switch.c
+--- linux-5.15/drivers/char/lrng/lrng_switch.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_switch.c 2021-11-29 12:37:19.323279070 +1100
+@@ -0,0 +1,226 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * LRNG DRNG switching support
++ *
++ * Copyright (C) 2016 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <linux/lrng.h>
++
++#include "lrng_internal.h"
++
++static int lrng_drng_switch(struct lrng_drng *drng_store,
++ const struct lrng_crypto_cb *cb, int node)
++{
++ const struct lrng_crypto_cb *old_cb;
++ unsigned long flags = 0, flags2 = 0;
++ int ret;
++ u8 seed[LRNG_DRNG_SECURITY_STRENGTH_BYTES];
++ void *new_drng = cb->lrng_drng_alloc(LRNG_DRNG_SECURITY_STRENGTH_BYTES);
++ void *old_drng, *new_hash, *old_hash;
++ u32 current_security_strength;
++ bool sl = false, reset_drng = !lrng_get_available();
++
++ if (IS_ERR(new_drng)) {
++ pr_warn("could not allocate new DRNG for NUMA node %d (%ld)\n",
++ node, PTR_ERR(new_drng));
++ return PTR_ERR(new_drng);
++ }
++
++ new_hash = cb->lrng_hash_alloc();
++ if (IS_ERR(new_hash)) {
++ pr_warn("could not allocate new LRNG pool hash (%ld)\n",
++ PTR_ERR(new_hash));
++ cb->lrng_drng_dealloc(new_drng);
++ return PTR_ERR(new_hash);
++ }
++
++ if (cb->lrng_hash_digestsize(new_hash) > LRNG_MAX_DIGESTSIZE) {
++ pr_warn("digest size of newly requested hash too large\n");
++ cb->lrng_hash_dealloc(new_hash);
++ cb->lrng_drng_dealloc(new_drng);
++ return -EINVAL;
++ }
++
++ current_security_strength = lrng_security_strength();
++ lrng_drng_lock(drng_store, &flags);
++
++ /*
++ * Pull from existing DRNG to seed new DRNG regardless of seed status
++ * of old DRNG -- the entropy state for the DRNG is left unchanged which
++ * implies that als the new DRNG is reseeded when deemed necessary. This
++ * seeding of the new DRNG shall only ensure that the new DRNG has the
++ * same entropy as the old DRNG.
++ */
++ ret = drng_store->crypto_cb->lrng_drng_generate_helper(
++ drng_store->drng, seed, sizeof(seed));
++ lrng_drng_unlock(drng_store, &flags);
++
++ if (ret < 0) {
++ reset_drng = true;
++ pr_warn("getting random data from DRNG failed for NUMA node %d (%d)\n",
++ node, ret);
++ } else {
++ /* seed new DRNG with data */
++ ret = cb->lrng_drng_seed_helper(new_drng, seed, ret);
++ memzero_explicit(seed, sizeof(seed));
++ if (ret < 0) {
++ reset_drng = true;
++ pr_warn("seeding of new DRNG failed for NUMA node %d (%d)\n",
++ node, ret);
++ } else {
++ pr_debug("seeded new DRNG of NUMA node %d instance from old DRNG instance\n",
++ node);
++ }
++ }
++
++ mutex_lock(&drng_store->lock);
++ write_lock_irqsave(&drng_store->hash_lock, flags2);
++ /*
++ * If we switch the DRNG from the initial ChaCha20 DRNG to something
++ * else, there is a lock transition from spin lock to mutex (see
++ * lrng_drng_is_atomic and how the lock is taken in lrng_drng_lock).
++ * Thus, we need to take both locks during the transition phase.
++ */
++ if (lrng_drng_is_atomic(drng_store)) {
++ spin_lock_irqsave(&drng_store->spin_lock, flags);
++ sl = true;
++ } else {
++ __acquire(&drng_store->spin_lock);
++ }
++
++ /* Trigger the switch of the aux entropy pool for current node. */
++ if (drng_store == lrng_drng_init_instance()) {
++ ret = lrng_aux_switch_hash(cb, new_hash, drng_store->crypto_cb);
++ if (ret)
++ goto err;
++ }
++
++ /* Trigger the switch of the per-CPU entropy pools for current node. */
++ ret = lrng_pcpu_switch_hash(node, cb, new_hash, drng_store->crypto_cb);
++ if (ret) {
++ /* Switch the crypto operation back to be consistent */
++ WARN_ON(lrng_aux_switch_hash(drng_store->crypto_cb,
++ drng_store->hash, cb));
++ } else {
++ if (reset_drng)
++ lrng_drng_reset(drng_store);
++
++ old_drng = drng_store->drng;
++ old_cb = drng_store->crypto_cb;
++ drng_store->drng = new_drng;
++ drng_store->crypto_cb = cb;
++
++ old_hash = drng_store->hash;
++ drng_store->hash = new_hash;
++ pr_info("Entropy pool read-hash allocated for DRNG for NUMA node %d\n",
++ node);
++
++ /* Reseed if previous LRNG security strength was insufficient */
++ if (current_security_strength < lrng_security_strength())
++ drng_store->force_reseed = true;
++
++ /* Force oversampling seeding as we initialize DRNG */
++ if (IS_ENABLED(CONFIG_LRNG_OVERSAMPLE_ENTROPY_SOURCES))
++ lrng_unset_fully_seeded(drng_store);
++
++ if (lrng_state_min_seeded())
++ lrng_set_entropy_thresh(lrng_get_seed_entropy_osr(
++ drng_store->fully_seeded));
++
++ /* ChaCha20 serves as atomic instance left untouched. */
++ if (old_drng != &chacha20) {
++ old_cb->lrng_drng_dealloc(old_drng);
++ old_cb->lrng_hash_dealloc(old_hash);
++ }
++
++ pr_info("DRNG of NUMA node %d switched\n", node);
++ }
++
++err:
++ if (sl)
++ spin_unlock_irqrestore(&drng_store->spin_lock, flags);
++ else
++ __release(&drng_store->spin_lock);
++ write_unlock_irqrestore(&drng_store->hash_lock, flags2);
++ mutex_unlock(&drng_store->lock);
++
++ return ret;
++}
++
++/*
++ * Switch the existing DRNG instances with new using the new crypto callbacks.
++ * The caller must hold the lrng_crypto_cb_update lock.
++ */
++static int lrng_drngs_switch(const struct lrng_crypto_cb *cb)
++{
++ struct lrng_drng **lrng_drng = lrng_drng_instances();
++ struct lrng_drng *lrng_drng_init = lrng_drng_init_instance();
++ int ret = 0;
++
++ /* Update DRNG */
++ if (lrng_drng) {
++ u32 node;
++
++ for_each_online_node(node) {
++ if (lrng_drng[node])
++ ret = lrng_drng_switch(lrng_drng[node], cb,
++ node);
++ }
++ } else {
++ ret = lrng_drng_switch(lrng_drng_init, cb, 0);
++ }
++
++ if (!ret)
++ lrng_set_available();
++
++ return 0;
++}
++
++/*
++ * lrng_set_drng_cb - Register new cryptographic callback functions for DRNG
++ * The registering implies that all old DRNG states are replaced with new
++ * DRNG states.
++ *
++ * @cb: Callback functions to be registered -- if NULL, use the default
++ * callbacks pointing to the ChaCha20 DRNG.
++ *
++ * Return:
++ * * 0 on success
++ * * < 0 on error
++ */
++int lrng_set_drng_cb(const struct lrng_crypto_cb *cb)
++{
++ struct lrng_drng *lrng_drng_init = lrng_drng_init_instance();
++ int ret;
++
++ if (!cb)
++ cb = &lrng_cc20_crypto_cb;
++
++ mutex_lock(&lrng_crypto_cb_update);
++
++ /*
++ * If a callback other than the default is set, allow it only to be
++ * set back to the default callback. This ensures that multiple
++ * different callbacks can be registered at the same time. If a
++ * callback different from the current callback and the default
++ * callback shall be set, the current callback must be deregistered
++ * (e.g. the kernel module providing it must be unloaded) and the new
++ * implementation can be registered.
++ */
++ if ((cb != &lrng_cc20_crypto_cb) &&
++ (lrng_drng_init->crypto_cb != &lrng_cc20_crypto_cb)) {
++ pr_warn("disallow setting new cipher callbacks, unload the old callbacks first!\n");
++ ret = -EINVAL;
++ goto out;
++ }
++
++ ret = lrng_drngs_switch(cb);
++
++out:
++ mutex_unlock(&lrng_crypto_cb_update);
++ return ret;
++}
++EXPORT_SYMBOL(lrng_set_drng_cb);
+diff -urN linux-5.15/drivers/char/lrng/lrng_testing.c linux-5.15-lrng/drivers/char/lrng/lrng_testing.c
+--- linux-5.15/drivers/char/lrng/lrng_testing.c 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/drivers/char/lrng/lrng_testing.c 2021-11-29 12:38:19.263278841 +1100
+@@ -0,0 +1,689 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
++/*
++ * Linux Random Number Generator (LRNG) testing interfaces
++ *
++ * Copyright (C) 2019 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <linux/atomic.h>
++#include <linux/bug.h>
++#include <linux/debugfs.h>
++#include <linux/lrng.h>
++#include <linux/module.h>
++#include <linux/sched.h>
++#include <linux/sched/signal.h>
++#include <linux/slab.h>
++#include <linux/string.h>
++#include <linux/types.h>
++#include <linux/uaccess.h>
++#include <linux/workqueue.h>
++#include <asm/errno.h>
++
++#include "lrng_internal.h"
++
++#define LRNG_TESTING_RINGBUFFER_SIZE 1024
++#define LRNG_TESTING_RINGBUFFER_MASK (LRNG_TESTING_RINGBUFFER_SIZE - 1)
++
++struct lrng_testing {
++ u32 lrng_testing_rb[LRNG_TESTING_RINGBUFFER_SIZE];
++ u32 rb_reader;
++ u32 rb_writer;
++ atomic_t lrng_testing_enabled;
++ spinlock_t lock;
++ wait_queue_head_t read_wait;
++};
++
++/*************************** Generic Data Handling ****************************/
++
++/*
++ * boot variable:
++ * 0 ==> No boot test, gathering of runtime data allowed
++ * 1 ==> Boot test enabled and ready for collecting data, gathering runtime
++ * data is disabled
++ * 2 ==> Boot test completed and disabled, gathering of runtime data is
++ * disabled
++ */
++
++static inline void lrng_testing_reset(struct lrng_testing *data)
++{
++ unsigned long flags;
++
++ spin_lock_irqsave(&data->lock, flags);
++ data->rb_reader = 0;
++ data->rb_writer = 0;
++ spin_unlock_irqrestore(&data->lock, flags);
++}
++
++static inline void lrng_testing_init(struct lrng_testing *data, u32 boot)
++{
++ /*
++ * The boot time testing implies we have a running test. If the
++ * caller wants to clear it, he has to unset the boot_test flag
++ * at runtime via sysfs to enable regular runtime testing
++ */
++ if (boot)
++ return;
++
++ lrng_testing_reset(data);
++ atomic_set(&data->lrng_testing_enabled, 1);
++ pr_warn("Enabling data collection\n");
++}
++
++static inline void lrng_testing_fini(struct lrng_testing *data, u32 boot)
++{
++ /* If we have boot data, we do not reset yet to allow data to be read */
++ if (boot)
++ return;
++
++ atomic_set(&data->lrng_testing_enabled, 0);
++ lrng_testing_reset(data);
++ pr_warn("Disabling data collection\n");
++}
++
++static inline bool lrng_testing_store(struct lrng_testing *data, u32 value,
++ u32 *boot)
++{
++ unsigned long flags;
++
++ if (!atomic_read(&data->lrng_testing_enabled) && (*boot != 1))
++ return false;
++
++ spin_lock_irqsave(&data->lock, flags);
++
++ /*
++ * Disable entropy testing for boot time testing after ring buffer
++ * is filled.
++ */
++ if (*boot) {
++ if (data->rb_writer > LRNG_TESTING_RINGBUFFER_SIZE) {
++ *boot = 2;
++ pr_warn_once("One time data collection test disabled\n");
++ spin_unlock_irqrestore(&data->lock, flags);
++ return false;
++ }
++
++ if (data->rb_writer == 1)
++ pr_warn("One time data collection test enabled\n");
++ }
++
++ data->lrng_testing_rb[data->rb_writer & LRNG_TESTING_RINGBUFFER_MASK] =
++ value;
++ data->rb_writer++;
++
++ spin_unlock_irqrestore(&data->lock, flags);
++
++ if (wq_has_sleeper(&data->read_wait))
++ wake_up_interruptible(&data->read_wait);
++
++ return true;
++}
++
++static inline bool lrng_testing_have_data(struct lrng_testing *data)
++{
++ return ((data->rb_writer & LRNG_TESTING_RINGBUFFER_MASK) !=
++ (data->rb_reader & LRNG_TESTING_RINGBUFFER_MASK));
++}
++
++static inline int lrng_testing_reader(struct lrng_testing *data, u32 *boot,
++ u8 *outbuf, u32 outbuflen)
++{
++ unsigned long flags;
++ int collected_data = 0;
++
++ lrng_testing_init(data, *boot);
++
++ while (outbuflen) {
++ spin_lock_irqsave(&data->lock, flags);
++
++ /* We have no data or reached the writer. */
++ if (!data->rb_writer ||
++ (data->rb_writer == data->rb_reader)) {
++
++ spin_unlock_irqrestore(&data->lock, flags);
++
++ /*
++ * Now we gathered all boot data, enable regular data
++ * collection.
++ */
++ if (*boot) {
++ *boot = 0;
++ goto out;
++ }
++
++ wait_event_interruptible(data->read_wait,
++ lrng_testing_have_data(data));
++ if (signal_pending(current)) {
++ collected_data = -ERESTARTSYS;
++ goto out;
++ }
++
++ continue;
++ }
++
++ /* We copy out word-wise */
++ if (outbuflen < sizeof(u32)) {
++ spin_unlock_irqrestore(&data->lock, flags);
++ goto out;
++ }
++
++ memcpy(outbuf, &data->lrng_testing_rb[data->rb_reader],
++ sizeof(u32));
++ data->rb_reader++;
++
++ spin_unlock_irqrestore(&data->lock, flags);
++
++ outbuf += sizeof(u32);
++ outbuflen -= sizeof(u32);
++ collected_data += sizeof(u32);
++ }
++
++out:
++ lrng_testing_fini(data, *boot);
++ return collected_data;
++}
++
++static int lrng_testing_extract_user(struct file *file, char __user *buf,
++ size_t nbytes, loff_t *ppos,
++ int (*reader)(u8 *outbuf, u32 outbuflen))
++{
++ u8 *tmp, *tmp_aligned;
++ int ret = 0, large_request = (nbytes > 256);
++
++ if (!nbytes)
++ return 0;
++
++ /*
++ * The intention of this interface is for collecting at least
++ * 1000 samples due to the SP800-90B requirements. So, we make no
++ * effort in avoiding allocating more memory that actually needed
++ * by the user. Hence, we allocate sufficient memory to always hold
++ * that amount of data.
++ */
++ tmp = kmalloc(LRNG_TESTING_RINGBUFFER_SIZE + sizeof(u32), GFP_KERNEL);
++ if (!tmp)
++ return -ENOMEM;
++
++ tmp_aligned = PTR_ALIGN(tmp, sizeof(u32));
++
++ while (nbytes) {
++ int i;
++
++ if (large_request && need_resched()) {
++ if (signal_pending(current)) {
++ if (ret == 0)
++ ret = -ERESTARTSYS;
++ break;
++ }
++ schedule();
++ }
++
++ i = min_t(int, nbytes, LRNG_TESTING_RINGBUFFER_SIZE);
++ i = reader(tmp_aligned, i);
++ if (i <= 0) {
++ if (i < 0)
++ ret = i;
++ break;
++ }
++ if (copy_to_user(buf, tmp_aligned, i)) {
++ ret = -EFAULT;
++ break;
++ }
++
++ nbytes -= i;
++ buf += i;
++ ret += i;
++ }
++
++ kfree_sensitive(tmp);
++
++ if (ret > 0)
++ *ppos += ret;
++
++ return ret;
++}
++
++/************** Raw High-Resolution Timer Entropy Data Handling ***************/
++
++#ifdef CONFIG_LRNG_RAW_HIRES_ENTROPY
++
++static u32 boot_raw_hires_test = 0;
++module_param(boot_raw_hires_test, uint, 0644);
++MODULE_PARM_DESC(boot_raw_hires_test, "Enable gathering boot time high resolution timer entropy of the first entropy events");
++
++static struct lrng_testing lrng_raw_hires = {
++ .rb_reader = 0,
++ .rb_writer = 0,
++ .lock = __SPIN_LOCK_UNLOCKED(lrng_raw_hires.lock),
++ .read_wait = __WAIT_QUEUE_HEAD_INITIALIZER(lrng_raw_hires.read_wait)
++};
++
++bool lrng_raw_hires_entropy_store(u32 value)
++{
++ return lrng_testing_store(&lrng_raw_hires, value, &boot_raw_hires_test);
++}
++
++static int lrng_raw_hires_entropy_reader(u8 *outbuf, u32 outbuflen)
++{
++ return lrng_testing_reader(&lrng_raw_hires, &boot_raw_hires_test,
++ outbuf, outbuflen);
++}
++
++static ssize_t lrng_raw_hires_read(struct file *file, char __user *to,
++ size_t count, loff_t *ppos)
++{
++ return lrng_testing_extract_user(file, to, count, ppos,
++ lrng_raw_hires_entropy_reader);
++}
++
++static const struct file_operations lrng_raw_hires_fops = {
++ .owner = THIS_MODULE,
++ .read = lrng_raw_hires_read,
++};
++
++#endif /* CONFIG_LRNG_RAW_HIRES_ENTROPY */
++
++/********************* Raw Jiffies Entropy Data Handling **********************/
++
++#ifdef CONFIG_LRNG_RAW_JIFFIES_ENTROPY
++
++static u32 boot_raw_jiffies_test = 0;
++module_param(boot_raw_jiffies_test, uint, 0644);
++MODULE_PARM_DESC(boot_raw_jiffies_test, "Enable gathering boot time high resolution timer entropy of the first entropy events");
++
++static struct lrng_testing lrng_raw_jiffies = {
++ .rb_reader = 0,
++ .rb_writer = 0,
++ .lock = __SPIN_LOCK_UNLOCKED(lrng_raw_jiffies.lock),
++ .read_wait = __WAIT_QUEUE_HEAD_INITIALIZER(lrng_raw_jiffies.read_wait)
++};
++
++bool lrng_raw_jiffies_entropy_store(u32 value)
++{
++ return lrng_testing_store(&lrng_raw_jiffies, value,
++ &boot_raw_jiffies_test);
++}
++
++static int lrng_raw_jiffies_entropy_reader(u8 *outbuf, u32 outbuflen)
++{
++ return lrng_testing_reader(&lrng_raw_jiffies, &boot_raw_jiffies_test,
++ outbuf, outbuflen);
++}
++
++static ssize_t lrng_raw_jiffies_read(struct file *file, char __user *to,
++ size_t count, loff_t *ppos)
++{
++ return lrng_testing_extract_user(file, to, count, ppos,
++ lrng_raw_jiffies_entropy_reader);
++}
++
++static const struct file_operations lrng_raw_jiffies_fops = {
++ .owner = THIS_MODULE,
++ .read = lrng_raw_jiffies_read,
++};
++
++#endif /* CONFIG_LRNG_RAW_JIFFIES_ENTROPY */
++
++/************************** Raw IRQ Data Handling ****************************/
++
++#ifdef CONFIG_LRNG_RAW_IRQ_ENTROPY
++
++static u32 boot_raw_irq_test = 0;
++module_param(boot_raw_irq_test, uint, 0644);
++MODULE_PARM_DESC(boot_raw_irq_test, "Enable gathering boot time entropy of the first IRQ entropy events");
++
++static struct lrng_testing lrng_raw_irq = {
++ .rb_reader = 0,
++ .rb_writer = 0,
++ .lock = __SPIN_LOCK_UNLOCKED(lrng_raw_irq.lock),
++ .read_wait = __WAIT_QUEUE_HEAD_INITIALIZER(lrng_raw_irq.read_wait)
++};
++
++bool lrng_raw_irq_entropy_store(u32 value)
++{
++ return lrng_testing_store(&lrng_raw_irq, value, &boot_raw_irq_test);
++}
++
++static int lrng_raw_irq_entropy_reader(u8 *outbuf, u32 outbuflen)
++{
++ return lrng_testing_reader(&lrng_raw_irq, &boot_raw_irq_test, outbuf,
++ outbuflen);
++}
++
++static ssize_t lrng_raw_irq_read(struct file *file, char __user *to,
++ size_t count, loff_t *ppos)
++{
++ return lrng_testing_extract_user(file, to, count, ppos,
++ lrng_raw_irq_entropy_reader);
++}
++
++static const struct file_operations lrng_raw_irq_fops = {
++ .owner = THIS_MODULE,
++ .read = lrng_raw_irq_read,
++};
++
++#endif /* CONFIG_LRNG_RAW_IRQ_ENTROPY */
++
++/************************ Raw IRQFLAGS Data Handling **************************/
++
++#ifdef CONFIG_LRNG_RAW_IRQFLAGS_ENTROPY
++
++static u32 boot_raw_irqflags_test = 0;
++module_param(boot_raw_irqflags_test, uint, 0644);
++MODULE_PARM_DESC(boot_raw_irqflags_test, "Enable gathering boot time entropy of the first IRQ flags entropy events");
++
++static struct lrng_testing lrng_raw_irqflags = {
++ .rb_reader = 0,
++ .rb_writer = 0,
++ .lock = __SPIN_LOCK_UNLOCKED(lrng_raw_irqflags.lock),
++ .read_wait = __WAIT_QUEUE_HEAD_INITIALIZER(lrng_raw_irqflags.read_wait)
++};
++
++bool lrng_raw_irqflags_entropy_store(u32 value)
++{
++ return lrng_testing_store(&lrng_raw_irqflags, value,
++ &boot_raw_irqflags_test);
++}
++
++static int lrng_raw_irqflags_entropy_reader(u8 *outbuf, u32 outbuflen)
++{
++ return lrng_testing_reader(&lrng_raw_irqflags, &boot_raw_irqflags_test,
++ outbuf, outbuflen);
++}
++
++static ssize_t lrng_raw_irqflags_read(struct file *file, char __user *to,
++ size_t count, loff_t *ppos)
++{
++ return lrng_testing_extract_user(file, to, count, ppos,
++ lrng_raw_irqflags_entropy_reader);
++}
++
++static const struct file_operations lrng_raw_irqflags_fops = {
++ .owner = THIS_MODULE,
++ .read = lrng_raw_irqflags_read,
++};
++
++#endif /* CONFIG_LRNG_RAW_IRQFLAGS_ENTROPY */
++
++/************************ Raw _RET_IP_ Data Handling **************************/
++
++#ifdef CONFIG_LRNG_RAW_RETIP_ENTROPY
++
++static u32 boot_raw_retip_test = 0;
++module_param(boot_raw_retip_test, uint, 0644);
++MODULE_PARM_DESC(boot_raw_retip_test, "Enable gathering boot time entropy of the first return instruction pointer entropy events");
++
++static struct lrng_testing lrng_raw_retip = {
++ .rb_reader = 0,
++ .rb_writer = 0,
++ .lock = __SPIN_LOCK_UNLOCKED(lrng_raw_retip.lock),
++ .read_wait = __WAIT_QUEUE_HEAD_INITIALIZER(lrng_raw_retip.read_wait)
++};
++
++bool lrng_raw_retip_entropy_store(u32 value)
++{
++ return lrng_testing_store(&lrng_raw_retip, value, &boot_raw_retip_test);
++}
++
++static int lrng_raw_retip_entropy_reader(u8 *outbuf, u32 outbuflen)
++{
++ return lrng_testing_reader(&lrng_raw_retip, &boot_raw_retip_test,
++ outbuf, outbuflen);
++}
++
++static ssize_t lrng_raw_retip_read(struct file *file, char __user *to,
++ size_t count, loff_t *ppos)
++{
++ return lrng_testing_extract_user(file, to, count, ppos,
++ lrng_raw_retip_entropy_reader);
++}
++
++static const struct file_operations lrng_raw_retip_fops = {
++ .owner = THIS_MODULE,
++ .read = lrng_raw_retip_read,
++};
++
++#endif /* CONFIG_LRNG_RAW_RETIP_ENTROPY */
++
++/********************** Raw IRQ register Data Handling ************************/
++
++#ifdef CONFIG_LRNG_RAW_REGS_ENTROPY
++
++static u32 boot_raw_regs_test = 0;
++module_param(boot_raw_regs_test, uint, 0644);
++MODULE_PARM_DESC(boot_raw_regs_test, "Enable gathering boot time entropy of the first interrupt register entropy events");
++
++static struct lrng_testing lrng_raw_regs = {
++ .rb_reader = 0,
++ .rb_writer = 0,
++ .lock = __SPIN_LOCK_UNLOCKED(lrng_raw_regs.lock),
++ .read_wait = __WAIT_QUEUE_HEAD_INITIALIZER(lrng_raw_regs.read_wait)
++};
++
++bool lrng_raw_regs_entropy_store(u32 value)
++{
++ return lrng_testing_store(&lrng_raw_regs, value, &boot_raw_regs_test);
++}
++
++static int lrng_raw_regs_entropy_reader(u8 *outbuf, u32 outbuflen)
++{
++ return lrng_testing_reader(&lrng_raw_regs, &boot_raw_regs_test,
++ outbuf, outbuflen);
++}
++
++static ssize_t lrng_raw_regs_read(struct file *file, char __user *to,
++ size_t count, loff_t *ppos)
++{
++ return lrng_testing_extract_user(file, to, count, ppos,
++ lrng_raw_regs_entropy_reader);
++}
++
++static const struct file_operations lrng_raw_regs_fops = {
++ .owner = THIS_MODULE,
++ .read = lrng_raw_regs_read,
++};
++
++#endif /* CONFIG_LRNG_RAW_REGS_ENTROPY */
++
++/********************** Raw Entropy Array Data Handling ***********************/
++
++#ifdef CONFIG_LRNG_RAW_ARRAY
++
++static u32 boot_raw_array = 0;
++module_param(boot_raw_array, uint, 0644);
++MODULE_PARM_DESC(boot_raw_array, "Enable gathering boot time raw noise array data of the first entropy events");
++
++static struct lrng_testing lrng_raw_array = {
++ .rb_reader = 0,
++ .rb_writer = 0,
++ .lock = __SPIN_LOCK_UNLOCKED(lrng_raw_array.lock),
++ .read_wait = __WAIT_QUEUE_HEAD_INITIALIZER(lrng_raw_array.read_wait)
++};
++
++bool lrng_raw_array_entropy_store(u32 value)
++{
++ return lrng_testing_store(&lrng_raw_array, value, &boot_raw_array);
++}
++
++static int lrng_raw_array_entropy_reader(u8 *outbuf, u32 outbuflen)
++{
++ return lrng_testing_reader(&lrng_raw_array, &boot_raw_array, outbuf,
++ outbuflen);
++}
++
++static ssize_t lrng_raw_array_read(struct file *file, char __user *to,
++ size_t count, loff_t *ppos)
++{
++ return lrng_testing_extract_user(file, to, count, ppos,
++ lrng_raw_array_entropy_reader);
++}
++
++static const struct file_operations lrng_raw_array_fops = {
++ .owner = THIS_MODULE,
++ .read = lrng_raw_array_read,
++};
++
++#endif /* CONFIG_LRNG_RAW_ARRAY */
++
++/******************** Interrupt Performance Data Handling *********************/
++
++#ifdef CONFIG_LRNG_IRQ_PERF
++
++static u32 boot_irq_perf = 0;
++module_param(boot_irq_perf, uint, 0644);
++MODULE_PARM_DESC(boot_irq_perf, "Enable gathering boot time interrupt performance data of the first entropy events");
++
++static struct lrng_testing lrng_irq_perf = {
++ .rb_reader = 0,
++ .rb_writer = 0,
++ .lock = __SPIN_LOCK_UNLOCKED(lrng_irq_perf.lock),
++ .read_wait = __WAIT_QUEUE_HEAD_INITIALIZER(lrng_irq_perf.read_wait)
++};
++
++bool lrng_perf_time(u32 start)
++{
++ return lrng_testing_store(&lrng_irq_perf, random_get_entropy() - start,
++ &boot_irq_perf);
++}
++
++static int lrng_irq_perf_reader(u8 *outbuf, u32 outbuflen)
++{
++ return lrng_testing_reader(&lrng_irq_perf, &boot_irq_perf, outbuf,
++ outbuflen);
++}
++
++static ssize_t lrng_irq_perf_read(struct file *file, char __user *to,
++ size_t count, loff_t *ppos)
++{
++ return lrng_testing_extract_user(file, to, count, ppos,
++ lrng_irq_perf_reader);
++}
++
++static const struct file_operations lrng_irq_perf_fops = {
++ .owner = THIS_MODULE,
++ .read = lrng_irq_perf_read,
++};
++
++#endif /* CONFIG_LRNG_IRQ_PERF */
++
++/*********************************** ACVT ************************************/
++
++#ifdef CONFIG_LRNG_ACVT_HASH
++
++/* maximum amount of data to be hashed as defined by ACVP */
++#define LRNG_ACVT_MAX_SHA_MSG (65536 >> 3)
++
++/*
++ * As we use static variables to store the data, it is clear that the
++ * test interface is only able to handle single threaded testing. This is
++ * considered to be sufficient for testing. If multi-threaded use of the
++ * ACVT test interface would be performed, the caller would get garbage
++ * but the kernel operation is unaffected by this.
++ */
++static u8 lrng_acvt_hash_data[LRNG_ACVT_MAX_SHA_MSG]
++ __aligned(LRNG_KCAPI_ALIGN);
++static atomic_t lrng_acvt_hash_data_size = ATOMIC_INIT(0);
++static u8 lrng_acvt_hash_digest[LRNG_ATOMIC_DIGEST_SIZE];
++
++static ssize_t lrng_acvt_hash_write(struct file *file, const char __user *buf,
++ size_t nbytes, loff_t *ppos)
++{
++ if (nbytes > LRNG_ACVT_MAX_SHA_MSG)
++ return -EINVAL;
++
++ atomic_set(&lrng_acvt_hash_data_size, (int)nbytes);
++
++ return simple_write_to_buffer(lrng_acvt_hash_data,
++ LRNG_ACVT_MAX_SHA_MSG, ppos, buf, nbytes);
++}
++
++static ssize_t lrng_acvt_hash_read(struct file *file, char __user *to,
++ size_t count, loff_t *ppos)
++{
++ SHASH_DESC_ON_STACK(shash, NULL);
++ const struct lrng_crypto_cb *crypto_cb = &lrng_cc20_crypto_cb;
++ ssize_t ret;
++
++ if (count > LRNG_ATOMIC_DIGEST_SIZE)
++ return -EINVAL;
++
++ ret = crypto_cb->lrng_hash_init(shash, NULL) ?:
++ crypto_cb->lrng_hash_update(shash, lrng_acvt_hash_data,
++ atomic_read_u32(&lrng_acvt_hash_data_size)) ?:
++ crypto_cb->lrng_hash_final(shash, lrng_acvt_hash_digest);
++ if (ret)
++ return ret;
++
++ return simple_read_from_buffer(to, count, ppos, lrng_acvt_hash_digest,
++ sizeof(lrng_acvt_hash_digest));
++}
++
++static const struct file_operations lrng_acvt_hash_fops = {
++ .owner = THIS_MODULE,
++ .open = simple_open,
++ .llseek = default_llseek,
++ .read = lrng_acvt_hash_read,
++ .write = lrng_acvt_hash_write,
++};
++
++#endif /* CONFIG_LRNG_ACVT_DRNG */
++
++/**************************************************************************
++ * Debugfs interface
++ **************************************************************************/
++
++static int __init lrng_raw_init(void)
++{
++ struct dentry *lrng_raw_debugfs_root;
++
++ lrng_raw_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
++
++#ifdef CONFIG_LRNG_RAW_HIRES_ENTROPY
++ debugfs_create_file_unsafe("lrng_raw_hires", 0400,
++ lrng_raw_debugfs_root, NULL,
++ &lrng_raw_hires_fops);
++#endif
++#ifdef CONFIG_LRNG_RAW_JIFFIES_ENTROPY
++ debugfs_create_file_unsafe("lrng_raw_jiffies", 0400,
++ lrng_raw_debugfs_root, NULL,
++ &lrng_raw_jiffies_fops);
++#endif
++#ifdef CONFIG_LRNG_RAW_IRQ_ENTROPY
++ debugfs_create_file_unsafe("lrng_raw_irq", 0400, lrng_raw_debugfs_root,
++ NULL, &lrng_raw_irq_fops);
++#endif
++#ifdef CONFIG_LRNG_RAW_IRQFLAGS_ENTROPY
++ debugfs_create_file_unsafe("lrng_raw_irqflags", 0400,
++ lrng_raw_debugfs_root, NULL,
++ &lrng_raw_irqflags_fops);
++#endif
++#ifdef CONFIG_LRNG_RAW_RETIP_ENTROPY
++ debugfs_create_file_unsafe("lrng_raw_retip", 0400,
++ lrng_raw_debugfs_root, NULL,
++ &lrng_raw_retip_fops);
++#endif
++#ifdef CONFIG_LRNG_RAW_REGS_ENTROPY
++ debugfs_create_file_unsafe("lrng_raw_regs", 0400,
++ lrng_raw_debugfs_root, NULL,
++ &lrng_raw_regs_fops);
++#endif
++#ifdef CONFIG_LRNG_RAW_ARRAY
++ debugfs_create_file_unsafe("lrng_raw_array", 0400,
++ lrng_raw_debugfs_root, NULL,
++ &lrng_raw_array_fops);
++#endif
++#ifdef CONFIG_LRNG_IRQ_PERF
++ debugfs_create_file_unsafe("lrng_irq_perf", 0400, lrng_raw_debugfs_root,
++ NULL, &lrng_irq_perf_fops);
++#endif
++#ifdef CONFIG_LRNG_ACVT_HASH
++ debugfs_create_file_unsafe("lrng_acvt_hash", 0600,
++ lrng_raw_debugfs_root, NULL,
++ &lrng_acvt_hash_fops);
++#endif
++
++ return 0;
++}
++
++module_init(lrng_raw_init);
+diff -urN linux-5.15/include/crypto/drbg.h linux-5.15-lrng/include/crypto/drbg.h
+--- linux-5.15/include/crypto/drbg.h 2021-11-01 07:53:10.000000000 +1100
++++ linux-5.15-lrng/include/crypto/drbg.h 2021-11-29 12:37:31.183279025 +1100
+@@ -278,4 +278,11 @@
+ DRBG_PREFIX3
+ };
+
++extern int drbg_alloc_state(struct drbg_state *drbg);
++extern void drbg_dealloc_state(struct drbg_state *drbg);
++extern void drbg_convert_tfm_core(const char *cra_driver_name, int *coreref,
++ bool *pr);
++extern const struct drbg_core drbg_cores[];
++extern unsigned short drbg_sec_strength(drbg_flag_t flags);
++
+ #endif /* _DRBG_H */
+diff -urN linux-5.15/include/crypto/internal/jitterentropy.h linux-5.15-lrng/include/crypto/internal/jitterentropy.h
+--- linux-5.15/include/crypto/internal/jitterentropy.h 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/include/crypto/internal/jitterentropy.h 2021-11-29 12:37:52.903278942 +1100
+@@ -0,0 +1,17 @@
++// SPDX-License-Identifier: GPL-2.0-or-later
++
++extern void *jent_zalloc(unsigned int len);
++extern void jent_zfree(void *ptr);
++extern int jent_fips_enabled(void);
++extern void jent_panic(char *s);
++extern void jent_memcpy(void *dest, const void *src, unsigned int n);
++extern void jent_get_nstime(__u64 *out);
++
++struct rand_data;
++extern int jent_entropy_init(void);
++extern int jent_read_entropy(struct rand_data *ec, unsigned char *data,
++ unsigned int len);
++
++extern struct rand_data *jent_entropy_collector_alloc(unsigned int osr,
++ unsigned int flags);
++extern void jent_entropy_collector_free(struct rand_data *entropy_collector);
+diff -urN linux-5.15/include/linux/lrng.h linux-5.15-lrng/include/linux/lrng.h
+--- linux-5.15/include/linux/lrng.h 1970-01-01 10:00:00.000000000 +1000
++++ linux-5.15-lrng/include/linux/lrng.h 2021-11-29 12:36:52.113279174 +1100
+@@ -0,0 +1,81 @@
++/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
++/*
++ * Copyright (C) 2018 - 2021, Stephan Mueller <smueller@chronox.de>
++ */
++
++#ifndef _LRNG_H
++#define _LRNG_H
++
++#include <crypto/hash.h>
++#include <linux/errno.h>
++#include <linux/types.h>
++
++/*
++ * struct lrng_crypto_cb - cryptographic callback functions
++ * @lrng_drng_name Name of DRNG
++ * @lrng_hash_name Name of Hash used for reading entropy pool
++ * @lrng_drng_alloc: Allocate DRNG -- the provided integer should be
++ * used for sanity checks.
++ * return: allocated data structure or PTR_ERR on
++ * error
++ * @lrng_drng_dealloc: Deallocate DRNG
++ * @lrng_drng_seed_helper: Seed the DRNG with data of arbitrary length
++ * drng: is pointer to data structure allocated
++ * with lrng_drng_alloc
++ * return: >= 0 on success, < 0 on error
++ * @lrng_drng_generate_helper: Generate random numbers from the DRNG with
++ * arbitrary length
++ * @lrng_hash_alloc: Allocate the hash for reading the entropy pool
++ * return: allocated data structure (NULL is
++ * success too) or ERR_PTR on error
++ * @lrng_hash_dealloc: Deallocate Hash
++ * @lrng_hash_digestsize: Return the digestsize for the used hash to read
++ * out entropy pool
++ * hash: is pointer to data structure allocated
++ * with lrng_hash_alloc
++ * return: size of digest of hash in bytes
++ * @lrng_hash_init: Initialize hash
++ * hash: is pointer to data structure allocated
++ * with lrng_hash_alloc
++ * return: 0 on success, < 0 on error
++ * @lrng_hash_update: Update hash operation
++ * hash: is pointer to data structure allocated
++ * with lrng_hash_alloc
++ * return: 0 on success, < 0 on error
++ * @lrng_hash_final Final hash operation
++ * hash: is pointer to data structure allocated
++ * with lrng_hash_alloc
++ * return: 0 on success, < 0 on error
++ * @lrng_hash_desc_zero Zeroization of hash state buffer
++ *
++ * Assumptions:
++ *
++ * 1. Hash operation will not sleep
++ * 2. The hash' volatile state information is provided with *shash by caller.
++ */
++struct lrng_crypto_cb {
++ const char *(*lrng_drng_name)(void);
++ const char *(*lrng_hash_name)(void);
++ void *(*lrng_drng_alloc)(u32 sec_strength);
++ void (*lrng_drng_dealloc)(void *drng);
++ int (*lrng_drng_seed_helper)(void *drng, const u8 *inbuf, u32 inbuflen);
++ int (*lrng_drng_generate_helper)(void *drng, u8 *outbuf, u32 outbuflen);
++ void *(*lrng_hash_alloc)(void);
++ void (*lrng_hash_dealloc)(void *hash);
++ u32 (*lrng_hash_digestsize)(void *hash);
++ int (*lrng_hash_init)(struct shash_desc *shash, void *hash);
++ int (*lrng_hash_update)(struct shash_desc *shash, const u8 *inbuf,
++ u32 inbuflen);
++ int (*lrng_hash_final)(struct shash_desc *shash, u8 *digest);
++ void (*lrng_hash_desc_zero)(struct shash_desc *shash);
++};
++
++/* Register cryptographic backend */
++#ifdef CONFIG_LRNG_DRNG_SWITCH
++int lrng_set_drng_cb(const struct lrng_crypto_cb *cb);
++#else /* CONFIG_LRNG_DRNG_SWITCH */
++static inline int
++lrng_set_drng_cb(const struct lrng_crypto_cb *cb) { return -EOPNOTSUPP; }
++#endif /* CONFIG_LRNG_DRNG_SWITCH */
++
++#endif /* _LRNG_H */