Hi Hans, On Wed, Mar 28, 2018 at 03:50:04PM +0200, Hans Verkuil wrote: ... > @@ -88,6 +96,8 @@ struct media_device_ops { > * @disable_source: Disable Source Handler function pointer > * > * @ops: Operation handler callbacks > + * @req_lock: Serialise access to requests > + * @req_queue_mutex: Serialise validating and queueing requests s/validating and// As there's no more a separate validation step. Then, Acked-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx> -- Sakari Ailus sakari.ailus@xxxxxxxxxxxxxxx