diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/apei/apei-base.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/acpi/apei/apei-base.c b/drivers/acpi/apei/apei-base.c index 6686b1eaf13e..00a783661d0b 100644 --- a/drivers/acpi/apei/apei-base.c +++ b/drivers/acpi/apei/apei-base.c @@ -586,6 +586,11 @@ static int apei_check_gar(struct acpi_generic_address *reg, u64 *paddr, } *access_bit_width = 1UL << (access_size_code + 2); + /* Fixup common BIOS bug */ + if (bit_width == 32 && bit_offset == 0 && (*paddr & 0x03) == 0 && + *access_bit_width < 32) + *access_bit_width = 32; + if ((bit_width + bit_offset) > *access_bit_width) { pr_warning(FW_BUG APEI_PFX "Invalid bit width + offset in GAR [0x%llx/%u/%u/%u/%u]\n", |