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path: root/drivers/acpi/executer/exmutex.c
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Diffstat (limited to 'drivers/acpi/executer/exmutex.c')
-rw-r--r--drivers/acpi/executer/exmutex.c45
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
*
******************************************************************************/