diff options
| author | Bob Moore <robert.moore@intel.com> | 2009-02-18 15:10:07 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-03-26 16:38:30 -0400 |
| commit | 9892dd23cbbfab1f7d4818622296e415979a9c77 (patch) | |
| tree | ae729299168fa2403c7a180da33b8091da51936b /drivers/acpi/acpica/hwsleep.c | |
| parent | ec41f193eadb6301f3c052b5e0dbc0b5636982e8 (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.c | 2 |
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); |