diff --git a/drivers/acpi/dispatcher/dsmethod.c b/drivers/acpi/dispatcher/dsmethod.c
index 1683e5c5b94c5febc942d191489f0f30634cbe04..1cbe6190582494ed9f3557c58a17b659644f4979 100644
--- a/drivers/acpi/dispatcher/dsmethod.c
+++ b/drivers/acpi/dispatcher/dsmethod.c
@@ -231,8 +231,10 @@ acpi_ds_begin_method_execution(struct acpi_namespace_node *method_node,
* Obtain the method mutex if necessary. Do not acquire mutex for a
* recursive call.
*/
- if (acpi_os_get_thread_id() !=
- obj_desc->method.mutex->mutex.owner_thread_id) {
+ if (!walk_state ||
+ !obj_desc->method.mutex->mutex.owner_thread ||
+ (walk_state->thread !=
+ obj_desc->method.mutex->mutex.owner_thread)) {
/*
* Acquire the method mutex. This releases the interpreter if we
* block (and reacquires it before it returns)
@@ -246,14 +248,14 @@ acpi_ds_begin_method_execution(struct acpi_namespace_node *method_node,
}
/* Update the mutex and walk info and save the original sync_level */
- obj_desc->method.mutex->mutex.owner_thread_id =
- acpi_os_get_thread_id();
if (walk_state) {
obj_desc->method.mutex->mutex.
original_sync_level =
walk_state->thread->current_sync_level;
+ obj_desc->method.mutex->mutex.owner_thread =
+ walk_state->thread;
walk_state->thread->current_sync_level =
obj_desc->method.sync_level;
} else {
@@ -567,7 +569,7 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
acpi_os_release_mutex(method_desc->method.mutex->mutex.
os_mutex);
- method_desc->method.mutex->mutex.owner_thread_id = ACPI_MUTEX_NOT_ACQUIRED;
+ method_desc->method.mutex->mutex.owner_thread = NULL;
}
}
diff --git a/drivers/acpi/executer/exdump.c b/drivers/acpi/executer/exdump.c
index 1a73c14df2c5aa7d7f7cdd1c195bb1e202747139..68d283fd60e7d254d936b0850a63950a948dbad3 100644
--- a/drivers/acpi/executer/exdump.c
+++ b/drivers/acpi/executer/exdump.c
@@ -134,7 +134,7 @@ static struct acpi_exdump_info acpi_ex_dump_method[8] = {
static struct acpi_exdump_info acpi_ex_dump_mutex[5] = {
{ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_mutex), NULL},
{ACPI_EXD_UINT8, ACPI_EXD_OFFSET(mutex.sync_level), "Sync Level"},
- {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(mutex.owner_thread_id), "Owner Thread"},
+ {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(mutex.owner_thread), "Owner Thread"},
{ACPI_EXD_UINT16, ACPI_EXD_OFFSET(mutex.acquisition_depth),
"Acquire Depth"},
{ACPI_EXD_POINTER, ACPI_EXD_OFFSET(mutex.os_mutex), "OsMutex"}
diff --git a/drivers/acpi/executer/exmutex.c b/drivers/acpi/executer/exmutex.c
index 4eb883bda6ae7f23800decda4a549042c64c8a94..5101bad5baf8b3074d29156b8a47444b286e90f8 100644
--- a/drivers/acpi/executer/exmutex.c
+++ b/drivers/acpi/executer/exmutex.c
@@ -66,9 +66,10 @@ acpi_ex_link_mutex(union acpi_operand_object *obj_desc,
*
******************************************************************************/
-void acpi_ex_unlink_mutex(union acpi_operand_object *obj_desc,
- struct acpi_thread_state *thread)
+void acpi_ex_unlink_mutex(union acpi_operand_object *obj_desc)
{
+ struct acpi_thread_state *thread = obj_desc->mutex.owner_thread;
+
if (!thread) {
return;
}
@@ -173,13 +174,16 @@ acpi_ex_acquire_mutex(union acpi_operand_object *time_desc,
/* Support for multiple acquires by the owning thread */
- if (obj_desc->mutex.owner_thread_id == acpi_os_get_thread_id()) {
- /*
- * The mutex is already owned by this thread, just increment the
- * acquisition depth
- */
- obj_desc->mutex.acquisition_depth++;
- return_ACPI_STATUS(AE_OK);
+ if (obj_desc->mutex.owner_thread) {
+ if (obj_desc->mutex.owner_thread->thread_id ==
+ walk_state->thread->thread_id) {
+ /*
+ * The mutex is already owned by this thread, just increment the
+ * acquisition depth
+ */
+ obj_desc->mutex.acquisition_depth++;
+ return_ACPI_STATUS(AE_OK);
+ }
}
/* Acquire the mutex, wait if necessary. Special case for Global Lock */
@@ -202,7 +206,7 @@ acpi_ex_acquire_mutex(union acpi_operand_object *time_desc,
/* Have the mutex: update mutex and walk info and save the sync_level */
- obj_desc->mutex.owner_thread_id = acpi_os_get_thread_id();
+ obj_desc->mutex.owner_thread = walk_state->thread;
obj_desc->mutex.acquisition_depth = 1;
obj_desc->mutex.original_sync_level =
walk_state->thread->current_sync_level;
@@ -242,7 +246,7 @@ acpi_ex_release_mutex(union acpi_operand_object *obj_desc,
/* The mutex must have been previously acquired in order to release it */
- if (!obj_desc->mutex.owner_thread_id) {
+ if (!obj_desc->mutex.owner_thread) {
ACPI_ERROR((AE_INFO,
"Cannot release Mutex [%4.4s], not acquired",
acpi_ut_get_node_name(obj_desc->mutex.node)));
@@ -262,14 +266,14 @@ acpi_ex_release_mutex(union acpi_operand_object *obj_desc,
* The Mutex is owned, but this thread must be the owner.
* Special case for Global Lock, any thread can release
*/
- if ((obj_desc->mutex.owner_thread_id !=
+ if ((obj_desc->mutex.owner_thread->thread_id !=
walk_state->thread->thread_id)
&& (obj_desc->mutex.os_mutex != acpi_gbl_global_lock_mutex)) {
ACPI_ERROR((AE_INFO,
"Thread %lX cannot release Mutex [%4.4s] acquired by thread %lX",
(unsigned long)walk_state->thread->thread_id,
acpi_ut_get_node_name(obj_desc->mutex.node),
- (unsigned long)obj_desc->mutex.owner_thread_id));
+ (unsigned long)obj_desc->mutex.owner_thread->thread_id));
return_ACPI_STATUS(AE_AML_NOT_OWNER);
}
@@ -296,7 +300,7 @@ acpi_ex_release_mutex(union acpi_operand_object *obj_desc,
/* Unlink the mutex from the owner's list */
- acpi_ex_unlink_mutex(obj_desc, walk_state->thread);
+ acpi_ex_unlink_mutex(obj_desc);
/* Release the mutex, special case for Global Lock */
@@ -308,7 +312,7 @@ acpi_ex_release_mutex(union acpi_operand_object *obj_desc,
/* Update the mutex and restore sync_level */
- obj_desc->mutex.owner_thread_id = ACPI_MUTEX_NOT_ACQUIRED;
+ obj_desc->mutex.owner_thread = NULL;
walk_state->thread->current_sync_level =
obj_desc->mutex.original_sync_level;
@@ -363,7 +367,7 @@ void acpi_ex_release_all_mutexes(struct acpi_thread_state *thread)
/* Mark mutex unowned */
- obj_desc->mutex.owner_thread_id = ACPI_MUTEX_NOT_ACQUIRED;
+ obj_desc->mutex.owner_thread = NULL;
/* Update Thread sync_level (Last mutex is the important one) */
diff --git a/drivers/acpi/utilities/utdelete.c b/drivers/acpi/utilities/utdelete.c
index 673a0caa4073438f3f22af2dcad6a6e9f4bdc029..f777cebdc46dd85f8ec66b491096f9d2f20af1a3 100644
--- a/drivers/acpi/utilities/utdelete.c
+++ b/drivers/acpi/utilities/utdelete.c
@@ -170,6 +170,7 @@ static void acpi_ut_delete_internal_obj(union acpi_operand_object *object)
acpi_os_delete_mutex(object->mutex.os_mutex);
acpi_gbl_global_lock_mutex = NULL;
} else {
+ acpi_ex_unlink_mutex(object);
acpi_os_delete_mutex(object->mutex.os_mutex);
}
break;
diff --git a/include/acpi/acinterp.h b/include/acpi/acinterp.h
index 73967c8152d325012db1f690f9cd6744caec2f76..ce7c9d653910598c29cce2baa2dcbb28b8cbb83b 100644
--- a/include/acpi/acinterp.h
+++ b/include/acpi/acinterp.h
@@ -253,8 +253,7 @@ acpi_ex_release_mutex(union acpi_operand_object *obj_desc,
void acpi_ex_release_all_mutexes(struct acpi_thread_state *thread);
-void acpi_ex_unlink_mutex(union acpi_operand_object *obj_desc,
- struct acpi_thread_state *thread);
+void acpi_ex_unlink_mutex(union acpi_operand_object *obj_desc);
/*
* exprep - ACPI AML execution - prep utilities
diff --git a/include/acpi/acobject.h b/include/acpi/acobject.h
index 5206d61d74a6039eac0852145eb956b842554d6a..04e9735a674214fb49aab10f3b75d273e3f44e0d 100644
--- a/include/acpi/acobject.h
+++ b/include/acpi/acobject.h
@@ -155,7 +155,7 @@ struct acpi_object_event {
struct acpi_object_mutex {
ACPI_OBJECT_COMMON_HEADER u8 sync_level; /* 0-15, specified in Mutex() call */
u16 acquisition_depth; /* Allow multiple Acquires, same thread */
- acpi_thread_id owner_thread_id; /* Current owner of the mutex */
+ struct acpi_thread_state *owner_thread; /* Current owner of the mutex */
acpi_mutex os_mutex; /* Actual OS synchronization object */
union acpi_operand_object *prev; /* Link for list of acquired mutexes */
union acpi_operand_object *next; /* Link for list of acquired mutexes */