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| author | Linn Crosetto <linn@hp.com> | 2013-04-12 00:25:17 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-04-12 13:29:47 +0200 |
| commit | 6d1490e248190646773083df60b25ffe14f74a4b (patch) | |
| tree | 33b5a3c1892f62ce11cbc1db66518b88e2c64ec5 | |
| parent | b07a383f46bafaf8a0607096aa75590ec962541f (diff) | |
| download | linux-6d1490e248190646773083df60b25ffe14f74a4b.tar.gz linux-6d1490e248190646773083df60b25ffe14f74a4b.tar.bz2 linux-6d1490e248190646773083df60b25ffe14f74a4b.zip | |
ACPICA: FADT: Remove extraneous warning for very large GPE registers
This change removes a size mismatch warning if the legacy
length field for a GPE register set is larger than the 64-bit
GAS structure can accomodate. GPE register sets can be larger
than the 255 bit limitation of the GAS structure. Linn Crosetto
(linn@hp.com).
Signed-off-by: Linn Crosetto <linn@hp.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/acpi/acpica/tbfadt.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c index 74181bf181ec..33b00d22300a 100644 --- a/drivers/acpi/acpica/tbfadt.c +++ b/drivers/acpi/acpica/tbfadt.c @@ -559,8 +559,12 @@ static void acpi_tb_validate_fadt(void) /* * For each extended field, check for length mismatch between the * legacy length field and the corresponding 64-bit X length field. + * Note: If the legacy length field is > 0xFF bits, ignore this + * check. (GPE registers can be larger than the 64-bit GAS structure + * can accomodate, 0xFF bits). */ if (address64->address && + (ACPI_MUL_8(length) <= ACPI_UINT8_MAX) && (address64->bit_width != ACPI_MUL_8(length))) { ACPI_BIOS_WARNING((AE_INFO, "32/64X length mismatch in FADT/%s: %u/%u", |