diff options
| author | Bob Moore <robert.moore@intel.com> | 2008-11-12 15:34:52 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-12-29 22:38:37 -0500 |
| commit | 009c4cbe99bea2da53f29ad685975a36f38c001c (patch) | |
| tree | 170887ee9986ae84792200abd3f3022df01630ce /drivers/acpi/events | |
| parent | c87609f31a8641009641fc1d19dac75e6de06fd4 (diff) | |
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>
Diffstat (limited to 'drivers/acpi/events')
| -rw-r--r-- | drivers/acpi/events/evmisc.c | 22 |
1 files changed, 6 insertions, 16 deletions
diff --git a/drivers/acpi/events/evmisc.c b/drivers/acpi/events/evmisc.c index 1d5670be729..82c457fa5a1 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 @@ static u32 acpi_ev_global_lock_handler(void *context) * 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_status acpi_ev_init_global_lock_handler(void) 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 @@ acpi_status acpi_ev_init_global_lock_handler(void) "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 @@ acpi_status acpi_ev_acquire_global_lock(u16 timeout) /* 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 @@ acpi_status acpi_ev_release_global_lock(void) /* 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 |