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authorBob Moore <robert.moore@intel.com>2009-02-18 15:10:07 +0800
committerLen Brown <len.brown@intel.com>2009-03-26 16:38:30 -0400
commit9892dd23cbbfab1f7d4818622296e415979a9c77 (patch)
treeae729299168fa2403c7a180da33b8091da51936b /drivers/acpi/acpica/hwsleep.c
parentec41f193eadb6301f3c052b5e0dbc0b5636982e8 (diff)
ACPICA: Optimize ACPI register locking
Removed locking for reads from the ACPI bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is not required when reading the single-bit registers. The acpi_get_register_unlocked function is no longer needed and has been removed. This will improve performance for reads on these registers. ACPICA BZ 760. http://www.acpica.org/bugzilla/show_bug.cgi?id=760 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/hwsleep.c')
-rw-r--r--drivers/acpi/acpica/hwsleep.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
index 26e249e69ead..677ccb6bceea 100644
--- a/drivers/acpi/acpica/hwsleep.c
+++ b/drivers/acpi/acpica/hwsleep.c
@@ -365,7 +365,7 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state)
/* Wait until we enter sleep state */
do {
- status = acpi_get_register_unlocked(ACPI_BITREG_WAKE_STATUS,
+ status = acpi_get_register(ACPI_BITREG_WAKE_STATUS,
&in_value);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);