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ACPI: Allow setting SCI_EN bit in PM1_CONTROL register 

This is needed by at least the Mac Mini's, which (incorrectly) come back
from suspend with SCI_EN clear.

Thanks to Frdric Riss for hunting this down.

Acked-by: Frdric Riss <frederic.riss@gmail.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <len.brown@intel.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Linus Torvalds 2006-10-10 17:14:44 -07:00
parent 0968cf51b6
commit 53a5fbdc2d
2 changed files with 1 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/acpi/hardware/hwregs.c
View File

@ -665,8 +665,6 @@ acpi_status acpi_hw_register_write(u8 use_lock, u32 register_id, u32 value)
/* /*
* Perform a read first to preserve certain bits (per ACPI spec) * Perform a read first to preserve certain bits (per ACPI spec)
*
* Note: This includes SCI_EN, we never want to change this bit
*/ */
status = acpi_hw_register_read(ACPI_MTX_DO_NOT_LOCK, status = acpi_hw_register_read(ACPI_MTX_DO_NOT_LOCK,
ACPI_REGISTER_PM1_CONTROL, ACPI_REGISTER_PM1_CONTROL,

2
include/acpi/aclocal.h
View File

@ -708,7 +708,7 @@ struct acpi_bit_register_info {
* must be preserved. * must be preserved.
*/ */
#define ACPI_PM1_STATUS_PRESERVED_BITS 0x0800 /* Bit 11 */ #define ACPI_PM1_STATUS_PRESERVED_BITS 0x0800 /* Bit 11 */
#define ACPI_PM1_CONTROL_PRESERVED_BITS 0x0201 /* Bit 9, Bit 0 (SCI_EN) */ #define ACPI_PM1_CONTROL_PRESERVED_BITS 0x0200 /* Bit 9 (whatever) */
/* /*
* Register IDs * Register IDs