diff options
Diffstat (limited to 'drivers/acpi/dispatcher/dsmethod.c')
| -rw-r--r-- | drivers/acpi/dispatcher/dsmethod.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/acpi/dispatcher/dsmethod.c b/drivers/acpi/dispatcher/dsmethod.c index 1683e5c5b94c..1cbe61905824 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; } } |