diff --git a/drivers/acpi/dispatcher/dsmethod.c b/drivers/acpi/dispatcher/dsmethod.c
index 1683e5c..1cbe619 100644
--- a/drivers/acpi/dispatcher/dsmethod.c
+++ b/drivers/acpi/dispatcher/dsmethod.c
@@ -231,8 +231,10 @@
 		 * 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 @@
 			}
 
 			/* 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_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 1a73c14..68d283f 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_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 4eb883b..5101bad 100644
--- a/drivers/acpi/executer/exmutex.c
+++ b/drivers/acpi/executer/exmutex.c
@@ -66,9 +66,10 @@
  *
  ******************************************************************************/
 
-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 @@
 
 	/* 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 @@
 
 	/* 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 @@
 
 	/* 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 @@
 	 * 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 @@
 
 	/* 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 @@
 
 	/* 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 @@
 
 		/* 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 673a0ca..f777ceb 100644
--- a/drivers/acpi/utilities/utdelete.c
+++ b/drivers/acpi/utilities/utdelete.c
@@ -170,6 +170,7 @@
 			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 73967c8..ce7c9d6 100644
--- a/include/acpi/acinterp.h
+++ b/include/acpi/acinterp.h
@@ -253,8 +253,7 @@
 
 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 5206d61..04e9735 100644
--- a/include/acpi/acobject.h
+++ b/include/acpi/acobject.h
@@ -155,7 +155,7 @@
 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 */