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authorLinus Torvalds <torvalds@g5.osdl.org>2006-10-10 17:14:44 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-10 17:14:44 -0700
commit53a5fbdc2dff55161a206ed1a1385a8fa8055c34 (patch)
tree9a90f7160d7a44a8ddb3a51fdaec866e01f1a359
parent0968cf51b6f2ca8a951de4b976370189cf43bbdd (diff)
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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 Frédéric Riss for hunting this down. Acked-by: Frédéric 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>
-rw-r--r--drivers/acpi/hardware/hwregs.c2
-rw-r--r--include/acpi/aclocal.h2
2 files changed, 1 insertions, 3 deletions
diff --git a/drivers/acpi/hardware/hwregs.c b/drivers/acpi/hardware/hwregs.c
index 3143f36fcec..fa58c1edce1 100644
--- a/drivers/acpi/hardware/hwregs.c
+++ b/drivers/acpi/hardware/hwregs.c
@@ -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)
- *
- * Note: This includes SCI_EN, we never want to change this bit
*/
status = acpi_hw_register_read(ACPI_MTX_DO_NOT_LOCK,
ACPI_REGISTER_PM1_CONTROL,
diff --git a/include/acpi/aclocal.h b/include/acpi/aclocal.h
index a4d0e73d5ac..063c4b54290 100644
--- a/include/acpi/aclocal.h
+++ b/include/acpi/aclocal.h
@@ -708,7 +708,7 @@ struct acpi_bit_register_info {
* must be preserved.
*/
#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