Commit 806e5b7c authored Dec 19, 2008 by Hans Verkuil Committed by Mauro Carvalho Chehab Dec 30, 2008

V4L/DVB (9942): v4l2-dev: check for parent device in get_index.



get_index requires a valid parent device in order to discover which
indices are in use. Some drivers (e.g. pvrusb2) do not set the parent
device. In that case just return 0.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

parent cfbd3072

drivers/media/video/v4l2-dev.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -162,6 +162,10 @@ static int get_index(struct video_device *vdev, int num)
		return -EINVAL;
		}

		/* Some drivers do not set the parent. In that case always return 0. */
		if (vdev->parent == NULL)
		return 0;

		for (i = 0; i < VIDEO_NUM_DEVICES; i++) {
		if (video_device[i] != NULL &&
		video_device[i] != vdev &&