diff options
| -rw-r--r-- | drivers/media/media-entity.c | 34 | ||||
| -rw-r--r-- | include/media/media-entity.h | 19 |
2 files changed, 43 insertions, 10 deletions
diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index bab592c6e785..bcd7464ab765 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -366,8 +366,8 @@ EXPORT_SYMBOL_GPL(media_entity_graph_walk_next); * Pipeline management */ -__must_check int media_entity_pipeline_start(struct media_entity *entity, - struct media_pipeline *pipe) +__must_check int __media_entity_pipeline_start(struct media_entity *entity, + struct media_pipeline *pipe) { struct media_device *mdev = entity->graph_obj.mdev; struct media_entity_graph *graph = &pipe->graph; @@ -375,8 +375,6 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, struct media_link *link; int ret; - mutex_lock(&mdev->graph_mutex); - if (!pipe->streaming_count++) { ret = media_entity_graph_walk_init(&pipe->graph, mdev); if (ret) @@ -457,8 +455,6 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, } } - mutex_unlock(&mdev->graph_mutex); - return 0; error: @@ -488,19 +484,28 @@ error_graph_walk_start: if (!--pipe->streaming_count) media_entity_graph_walk_cleanup(graph); - mutex_unlock(&mdev->graph_mutex); + return ret; +} +EXPORT_SYMBOL_GPL(__media_entity_pipeline_start); +__must_check int media_entity_pipeline_start(struct media_entity *entity, + struct media_pipeline *pipe) +{ + struct media_device *mdev = entity->graph_obj.mdev; + int ret; + + mutex_lock(&mdev->graph_mutex); + ret = __media_entity_pipeline_start(entity, pipe); + mutex_unlock(&mdev->graph_mutex); return ret; } EXPORT_SYMBOL_GPL(media_entity_pipeline_start); -void media_entity_pipeline_stop(struct media_entity *entity) +void __media_entity_pipeline_stop(struct media_entity *entity) { - struct media_device *mdev = entity->graph_obj.mdev; struct media_entity_graph *graph = &entity->pipe->graph; struct media_pipeline *pipe = entity->pipe; - mutex_lock(&mdev->graph_mutex); WARN_ON(!pipe->streaming_count); media_entity_graph_walk_start(graph, entity); @@ -517,6 +522,15 @@ void media_entity_pipeline_stop(struct media_entity *entity) if (!--pipe->streaming_count) media_entity_graph_walk_cleanup(graph); +} +EXPORT_SYMBOL_GPL(__media_entity_pipeline_stop); + +void media_entity_pipeline_stop(struct media_entity *entity) +{ + struct media_device *mdev = entity->graph_obj.mdev; + + mutex_lock(&mdev->graph_mutex); + __media_entity_pipeline_stop(entity); mutex_unlock(&mdev->graph_mutex); } EXPORT_SYMBOL_GPL(media_entity_pipeline_stop); diff --git a/include/media/media-entity.h b/include/media/media-entity.h index fe485d367985..d58e29d3f239 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -832,6 +832,16 @@ media_entity_graph_walk_next(struct media_entity_graph *graph); */ __must_check int media_entity_pipeline_start(struct media_entity *entity, struct media_pipeline *pipe); +/** + * __media_entity_pipeline_start - Mark a pipeline as streaming + * + * @entity: Starting entity + * @pipe: Media pipeline to be assigned to all entities in the pipeline. + * + * Note: This is the non-locking version of media_entity_pipeline_start() + */ +__must_check int __media_entity_pipeline_start(struct media_entity *entity, + struct media_pipeline *pipe); /** * media_entity_pipeline_stop - Mark a pipeline as not streaming @@ -848,6 +858,15 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, void media_entity_pipeline_stop(struct media_entity *entity); /** + * __media_entity_pipeline_stop - Mark a pipeline as not streaming + * + * @entity: Starting entity + * + * Note: This is the non-locking version of media_entity_pipeline_stop() + */ +void __media_entity_pipeline_stop(struct media_entity *entity); + +/** * media_devnode_create() - creates and initializes a device node interface * * @mdev: pointer to struct &media_device |