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Subject: [media] media: Improve documentation for link_setup/link_modify Author: Mauro Carvalho Chehab <[email protected]> Date: Wed Apr 6 10:55:25 2016 -0300 Those callbacks are called with the media_device.graph_mutex held. Add a note about that, as the code called by those notifiers should not be touching in the mutex. Acked-by: Sakari Ailus <[email protected]> Acked-by: Hans Verkuil <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> include/media/media-device.h | 3 ++- include/media/media-entity.h | 3 +++ 2 files changed, 5 insertions(+), 1 deletion(-) --- diff --git a/include/media/media-device.h b/include/media/media-device.h index b21ef244ad3e..a9b33c47310d 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -311,7 +311,8 @@ struct media_entity_notify { * @enable_source: Enable Source Handler function pointer * @disable_source: Disable Source Handler function pointer * - * @link_notify: Link state change notification callback + * @link_notify: Link state change notification callback. This callback is + * called with the graph_mutex held. * * This structure represents an abstract high-level media device. It allows easy * access to entities and provides basic media device-level support. The diff --git a/include/media/media-entity.h b/include/media/media-entity.h index e0295eefd702..cbb266f7f2b5 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -179,6 +179,9 @@ struct media_pad { * @link_validate: Return whether a link is valid from the entity point of * view. The media_entity_pipeline_start() function * validates all links by calling this operation. Optional. + * + * Note: Those these callbacks are called with struct media_device.@graph_mutex + * mutex held. */ struct media_entity_operations { int (*link_setup)(struct media_entity *entity, _______________________________________________ linuxtv-commits mailing list [email protected] http://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
