From 975b3c474c13d29337eaf7da8f5f5c0299e4943f Mon Sep 17 00:00:00 2001 From: Lin Ming Date: Fri, 15 May 2009 22:27:49 -0400 Subject: [PATCH] ACPI: resume: re-enable SCI-enable workaround X-Patchwork-Hint: ignore The BIOS bug workaround mistakenly got disabled when we followed the ACPI specification more closely by ignoring OS updates to that bit. (The BIOS is supposed to update SCI_EN, not the OS) http://bugzilla.kernel.org/show_bug.cgi?id=13289 Signed-off-by: Lin Ming Signed-off-by: Len Brown --- drivers/acpi/acpica/aclocal.h | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h index 772ee5c..2ec394a 100644 --- a/drivers/acpi/acpica/aclocal.h +++ b/drivers/acpi/acpica/aclocal.h @@ -787,7 +787,12 @@ struct acpi_bit_register_info { /* For control registers, both ignored and reserved bits must be preserved */ -#define ACPI_PM1_CONTROL_IGNORED_BITS 0x0201 /* Bits 9, 0(SCI_EN) */ +/* + * The ACPI spec says to ignore PM1_CTL.SCI_EN (bit 0) + * but we need to be able to write ACPI_BITREG_SCI_ENABLE directly + * as a BIOS workaround on some machines. + */ +#define ACPI_PM1_CONTROL_IGNORED_BITS 0x0200 /* Bits 9 */ #define ACPI_PM1_CONTROL_RESERVED_BITS 0xC1F8 /* Bits 14-15, 3-8 */ #define ACPI_PM1_CONTROL_PRESERVED_BITS \ (ACPI_PM1_CONTROL_IGNORED_BITS | ACPI_PM1_CONTROL_RESERVED_BITS) -- 1.6.3.1.9.g95405b