From: Bob Moore <robert.moore@xxxxxxxxx> Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@xxxxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> --- drivers/acpi/executer/exmutex.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-) diff --git a/drivers/acpi/executer/exmutex.c b/drivers/acpi/executer/exmutex.c index f1dd1b0..b0be2f4 100644 --- a/drivers/acpi/executer/exmutex.c +++ b/drivers/acpi/executer/exmutex.c @@ -329,6 +329,12 @@ acpi_ex_release_mutex(union acpi_operand_object *obj_desc, * * DESCRIPTION: Release all mutexes held by this thread * + * NOTE: This function is called as the thread is exiting the interpreter. + * Mutexes are not released when an individual control method is exited, but + * only when the parent thread actually exits the interpreter. This allows one + * method to acquire a mutex, and a different method to release it, as long as + * this is performed underneath a single parent control method. + * ******************************************************************************/ void acpi_ex_release_all_mutexes(struct acpi_thread_state *thread) @@ -346,7 +352,7 @@ void acpi_ex_release_all_mutexes(struct acpi_thread_state *thread) obj_desc->mutex.prev = NULL; obj_desc->mutex.next = NULL; - obj_desc->mutex.acquisition_depth = 1; + obj_desc->mutex.acquisition_depth = 0; /* Release the mutex, special case for Global Lock */ -- 1.5.0.rc3.39.gec804 - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
