Commit fc5602be authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
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[media] v4l2-fh: implement v4l2_priority support 



Signed-off-by: default avatarHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 0f62fd6a

drivers/media/video/v4l2-fh.c

+4 −0
Original line number Diff line number Diff line
@@ -33,6 +33,8 @@ int v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev) 
	fh->vdev = vdev;

	INIT_LIST_HEAD(&fh->list);

	set_bit(V4L2_FL_USES_V4L2_FH, &fh->vdev->flags);

	fh->prio = V4L2_PRIORITY_UNSET;

	BUG_ON(vdev->prio == NULL);



	/*

	 * fh->events only needs to be initialized if the driver
@@ -51,6 +53,7 @@ void v4l2_fh_add(struct v4l2_fh *fh) 
{

	unsigned long flags;



	v4l2_prio_open(fh->vdev->prio, &fh->prio);

	spin_lock_irqsave(&fh->vdev->fh_lock, flags);

	list_add(&fh->list, &fh->vdev->fh_list);

	spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);
@@ -64,6 +67,7 @@ void v4l2_fh_del(struct v4l2_fh *fh) 
	spin_lock_irqsave(&fh->vdev->fh_lock, flags);

	list_del_init(&fh->list);

	spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);

	v4l2_prio_close(fh->vdev->prio, fh->prio);

}

EXPORT_SYMBOL_GPL(v4l2_fh_del);

include/media/v4l2-fh.h

+1 −0
Original line number Diff line number Diff line
@@ -35,6 +35,7 @@ struct v4l2_fh { 
	struct list_head	list;

	struct video_device	*vdev;

	struct v4l2_events      *events; /* events, pending and subscribed */

	enum v4l2_priority	prio;

};



/*