diff options
Diffstat (limited to 'drivers/acpi/executer/exmutex.c')
| -rw-r--r-- | drivers/acpi/executer/exmutex.c | 45 |
1 files changed, 29 insertions, 16 deletions
diff --git a/drivers/acpi/executer/exmutex.c b/drivers/acpi/executer/exmutex.c index 68c4bb1970a..c3cb714d2cb 100644 --- a/drivers/acpi/executer/exmutex.c +++ b/drivers/acpi/executer/exmutex.c @@ -49,6 +49,13 @@ #define _COMPONENT ACPI_EXECUTER ACPI_MODULE_NAME ("exmutex") +/* Local prototypes */ + +static void +acpi_ex_link_mutex ( + union acpi_operand_object *obj_desc, + struct acpi_thread_state *thread); + /******************************************************************************* * @@ -56,7 +63,7 @@ * * PARAMETERS: obj_desc - The mutex to be unlinked * - * RETURN: Status + * RETURN: None * * DESCRIPTION: Remove a mutex from the "acquired_mutex" list * @@ -92,16 +99,16 @@ acpi_ex_unlink_mutex ( * * FUNCTION: acpi_ex_link_mutex * - * PARAMETERS: obj_desc - The mutex to be linked - * list_head - head of the "acquired_mutex" list + * PARAMETERS: obj_desc - The mutex to be linked + * Thread - Current executing thread object * - * RETURN: Status + * RETURN: None * * DESCRIPTION: Add a mutex to the "acquired_mutex" list for this walk * ******************************************************************************/ -void +static void acpi_ex_link_mutex ( union acpi_operand_object *obj_desc, struct acpi_thread_state *thread) @@ -132,8 +139,9 @@ acpi_ex_link_mutex ( * * FUNCTION: acpi_ex_acquire_mutex * - * PARAMETERS: time_desc - The 'time to delay' object descriptor - * obj_desc - The object descriptor for this op + * PARAMETERS: time_desc - Timeout integer + * obj_desc - Mutex object + * walk_state - Current method execution state * * RETURN: Status * @@ -161,7 +169,7 @@ acpi_ex_acquire_mutex ( if (!walk_state->thread) { ACPI_REPORT_ERROR (("Cannot acquire Mutex [%4.4s], null thread info\n", - acpi_ut_get_node_name (obj_desc->mutex.node))); + acpi_ut_get_node_name (obj_desc->mutex.node))); return_ACPI_STATUS (AE_AML_INTERNAL); } @@ -170,8 +178,9 @@ acpi_ex_acquire_mutex ( * mutex. This mechanism provides some deadlock prevention */ if (walk_state->thread->current_sync_level > obj_desc->mutex.sync_level) { - ACPI_REPORT_ERROR (("Cannot acquire Mutex [%4.4s], incorrect sync_level\n", - acpi_ut_get_node_name (obj_desc->mutex.node))); + ACPI_REPORT_ERROR (( + "Cannot acquire Mutex [%4.4s], incorrect sync_level\n", + acpi_ut_get_node_name (obj_desc->mutex.node))); return_ACPI_STATUS (AE_AML_MUTEX_ORDER); } @@ -180,8 +189,10 @@ acpi_ex_acquire_mutex ( if (obj_desc->mutex.owner_thread) { /* Special case for Global Lock, allow all threads */ - if ((obj_desc->mutex.owner_thread->thread_id == walk_state->thread->thread_id) || - (obj_desc->mutex.semaphore == acpi_gbl_global_lock_semaphore)) { + if ((obj_desc->mutex.owner_thread->thread_id == + walk_state->thread->thread_id) || + (obj_desc->mutex.semaphore == + acpi_gbl_global_lock_semaphore)) { /* * The mutex is already owned by this thread, * just increment the acquisition depth @@ -221,6 +232,7 @@ acpi_ex_acquire_mutex ( * FUNCTION: acpi_ex_release_mutex * * PARAMETERS: obj_desc - The object descriptor for this op + * walk_state - Current method execution state * * RETURN: Status * @@ -278,8 +290,9 @@ acpi_ex_release_mutex ( * equal to the current sync level */ if (obj_desc->mutex.sync_level > walk_state->thread->current_sync_level) { - ACPI_REPORT_ERROR (("Cannot release Mutex [%4.4s], incorrect sync_level\n", - acpi_ut_get_node_name (obj_desc->mutex.node))); + ACPI_REPORT_ERROR (( + "Cannot release Mutex [%4.4s], incorrect sync_level\n", + acpi_ut_get_node_name (obj_desc->mutex.node))); return_ACPI_STATUS (AE_AML_MUTEX_ORDER); } @@ -313,11 +326,11 @@ acpi_ex_release_mutex ( * * FUNCTION: acpi_ex_release_all_mutexes * - * PARAMETERS: mutex_list - Head of the mutex list + * PARAMETERS: Thread - Current executing thread object * * RETURN: Status * - * DESCRIPTION: Release all mutexes in the list + * DESCRIPTION: Release all mutexes held by this thread * ******************************************************************************/ |