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ACPICA: Optimize ACPI register locking

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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 <[email protected]>
Signed-off-by: Lin Ming <[email protected]>
Signed-off-by: Len Brown <[email protected]>
This commit is contained in:
Bob Moore 2009-02-18 15:10:07 +08:00 • committed by Len Brown
commit 9892dd23cb
4 changed files with 29 additions and 42 deletions
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2
include/acpi/acpixf.h
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@ -347,8 +347,6 @@ acpi_status acpi_reset(void);
acpi_status acpi_get_register(u32 register_id, u32 * return_value);
acpi_status acpi_get_register_unlocked(u32 register_id, u32 *return_value);
acpi_status acpi_set_register(u32 register_id, u32 value);
acpi_status acpi_set_firmware_waking_vector(u32 physical_address);