33 void v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev)  in v4l2_fh_init()  argument
35 	fh->vdev = vdev;  in v4l2_fh_init()
37 	fh->ctrl_handler = vdev->ctrl_handler;  in v4l2_fh_init()
39 	set_bit(V4L2_FL_USES_V4L2_FH, &fh->vdev->flags);  in v4l2_fh_init()
52 	if (test_bit(V4L2_FL_USE_FH_PRIO, &fh->vdev->flags))  in v4l2_fh_add()
53 		v4l2_prio_open(fh->vdev->prio, &fh->prio);  in v4l2_fh_add()
54 	spin_lock_irqsave(&fh->vdev->fh_lock, flags);  in v4l2_fh_add()
55 	list_add(&fh->list, &fh->vdev->fh_list);  in v4l2_fh_add()
56 	spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);  in v4l2_fh_add()
62 	struct video_device *vdev = video_devdata(filp);  in v4l2_fh_open()  local
68 	v4l2_fh_init(fh, vdev);  in v4l2_fh_open()
78 	spin_lock_irqsave(&fh->vdev->fh_lock, flags);  in v4l2_fh_del()
80 	spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);  in v4l2_fh_del()
81 	if (test_bit(V4L2_FL_USE_FH_PRIO, &fh->vdev->flags))  in v4l2_fh_del()
82 		v4l2_prio_close(fh->vdev->prio, fh->prio);  in v4l2_fh_del()
88 	if (fh->vdev == NULL)  in v4l2_fh_exit()
91 	fh->vdev = NULL;  in v4l2_fh_exit()
113 	if (fh == NULL || fh->vdev == NULL)  in v4l2_fh_is_singular()
115 	spin_lock_irqsave(&fh->vdev->fh_lock, flags);  in v4l2_fh_is_singular()
117 	spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);  in v4l2_fh_is_singular()