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ACPICA: FADT: Remove extraneous warning for very large GPE registers

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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>
This commit is contained in:
Linn Crosetto 2013-04-12 00:25:17 +00:00 committed by Rafael J. Wysocki
parent b07a383f46
commit 6d1490e248
1 changed files with 4 additions and 0 deletions
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4
drivers/acpi/acpica/tbfadt.c
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@ -559,8 +559,12 @@ static void acpi_tb_validate_fadt(void)
/* /*
* For each extended field, check for length mismatch between the * For each extended field, check for length mismatch between the
* legacy length field and the corresponding 64-bit X length field. * 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 && if (address64->address &&
(ACPI_MUL_8(length) <= ACPI_UINT8_MAX) &&
(address64->bit_width != ACPI_MUL_8(length))) { (address64->bit_width != ACPI_MUL_8(length))) {
ACPI_BIOS_WARNING((AE_INFO, ACPI_BIOS_WARNING((AE_INFO,
"32/64X length mismatch in FADT/%s: %u/%u", "32/64X length mismatch in FADT/%s: %u/%u",