ACPICA: Add global pointer for FACS table to simplify FACS access
Use a global pointer instead of using AcpiGetTableByIndex for
each FACS access. This simplifies the code for the Global Lock
and the Firmware Waking Vector(s).
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>
diff --git a/drivers/acpi/events/evmisc.c b/drivers/acpi/events/evmisc.c
index 1d5670b..82c457f 100644
--- a/drivers/acpi/events/evmisc.c
+++ b/drivers/acpi/events/evmisc.c
@@ -49,11 +49,7 @@
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME("evmisc")
-/* Pointer to FACS needed for the Global Lock */
-static struct acpi_table_facs *facs = NULL;
-
/* Local prototypes */
-
static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context);
static u32 acpi_ev_global_lock_handler(void *context);
@@ -299,7 +295,7 @@
* If we don't get it now, it will be marked pending and we will
* take another interrupt when it becomes free.
*/
- ACPI_ACQUIRE_GLOBAL_LOCK(facs, acquired);
+ ACPI_ACQUIRE_GLOBAL_LOCK(acpi_gbl_FACS, acquired);
if (acquired) {
/* Got the lock, now wake all threads waiting for it */
@@ -336,15 +332,8 @@
ACPI_FUNCTION_TRACE(ev_init_global_lock_handler);
- status = acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS,
- ACPI_CAST_INDIRECT_PTR(struct
- acpi_table_header,
- &facs));
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
+ /* Attempt installation of the global lock handler */
- acpi_gbl_global_lock_present = TRUE;
status = acpi_install_fixed_event_handler(ACPI_EVENT_GLOBAL,
acpi_ev_global_lock_handler,
NULL);
@@ -361,9 +350,10 @@
"No response from Global Lock hardware, disabling lock"));
acpi_gbl_global_lock_present = FALSE;
- status = AE_OK;
+ return_ACPI_STATUS(AE_OK);
}
+ acpi_gbl_global_lock_present = TRUE;
return_ACPI_STATUS(status);
}
@@ -472,7 +462,7 @@
/* Attempt to acquire the actual hardware lock */
- ACPI_ACQUIRE_GLOBAL_LOCK(facs, acquired);
+ ACPI_ACQUIRE_GLOBAL_LOCK(acpi_gbl_FACS, acquired);
if (acquired) {
/* We got the lock */
@@ -536,7 +526,7 @@
/* Allow any thread to release the lock */
- ACPI_RELEASE_GLOBAL_LOCK(facs, pending);
+ ACPI_RELEASE_GLOBAL_LOCK(acpi_gbl_FACS, pending);
/*
* If the pending bit was set, we must write GBL_RLS to the control