[media] media: Always keep a graph walk large enough around
Re-create the graph walk object as needed in order to have one large enough
available for all entities in the graph.
This enumeration is used for pipeline power management in the future.
[mchehab@osg.samsung.com: fix documentation bug:
" warning: bad line: graph_mutex"]
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/include/media/media-device.h b/include/media/media-device.h
index 32bbba7..df74cfa 100644
--- a/include/media/media-device.h
+++ b/include/media/media-device.h
@@ -306,6 +306,8 @@
* @entity_notify: List of registered entity_notify callbacks
* @lock: Entities list lock
* @graph_mutex: Entities graph operation lock
+ * @pm_count_walk: Graph walk for power state walk. Access serialised using
+ * graph_mutex.
*
* @source_priv: Driver Private data for enable/disable source handlers
* @enable_source: Enable Source Handler function pointer
@@ -373,6 +375,7 @@
spinlock_t lock;
/* Serializes graph operations. */
struct mutex graph_mutex;
+ struct media_entity_graph pm_count_walk;
void *source_priv;
int (*enable_source)(struct media_entity *entity,