From: Linn Crosetto Date: Fri, 12 Apr 2013 00:25:17 +0000 (+0000) Subject: ACPICA: FADT: Remove extraneous warning for very large GPE registers X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=6d1490e248190646773083df60b25ffe14f74a4b;p=deliverable%2Flinux.git 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 Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- 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",