diff options
Diffstat (limited to 'user/grub/0003-spcr-revision.patch')
| -rw-r--r-- | user/grub/0003-spcr-revision.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/user/grub/0003-spcr-revision.patch b/user/grub/0003-spcr-revision.patch new file mode 100644 index 000000000..48b5e2f48 --- /dev/null +++ b/user/grub/0003-spcr-revision.patch @@ -0,0 +1,42 @@ +From b0890d371ca1e49877c45d696deb9102f1b605c3 Mon Sep 17 00:00:00 2001 +From: Glenn Washburn <development@efficientek.com> +Date: Wed, 26 Jul 2023 16:02:36 -0500 +Subject: term/ns8250-spcr: Continue processing SPCR table even if revision is + < 2 + +According to commit 0231d00082 (ACPI: SPCR: Make SPCR available to x86) +to the Linux kernel, "On x86, many systems have a valid SPCR table but the +table version is not 2 so the table version check must be a warning." + +Signed-off-by: Glenn Washburn <development@efficientek.com> +Reviewed-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> +Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com> +--- + grub-core/term/ns8250-spcr.c | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +diff --git a/grub-core/term/ns8250-spcr.c b/grub-core/term/ns8250-spcr.c +index d101bff..d52b52c 100644 +--- a/grub-core/term/ns8250-spcr.c ++++ b/grub-core/term/ns8250-spcr.c +@@ -18,6 +18,7 @@ + + #if !defined(GRUB_MACHINE_IEEE1275) && !defined(GRUB_MACHINE_QEMU) + ++#include <grub/misc.h> + #include <grub/serial.h> + #include <grub/ns8250.h> + #include <grub/types.h> +@@ -34,7 +35,8 @@ grub_ns8250_spcr_init (void) + if (spcr == NULL) + return NULL; + if (spcr->hdr.revision < 2) +- return NULL; ++ grub_dprintf ("serial", "SPCR table revision %d < 2, continuing anyway\n", ++ (int) spcr->hdr.revision); + if (spcr->intf_type != GRUB_ACPI_SPCR_INTF_TYPE_16550 && + spcr->intf_type != GRUB_ACPI_SPCR_INTF_TYPE_16550X) + return NULL; +-- +cgit v1.1 + |