V4L/DVB (11046): bttv: convert to v4l2_device.

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

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/media/video/bt8xx/bttvp.h b/drivers/media/video/bt8xx/bttvp.h
index 2c0a2cc61d03..5755b407c0a2 100644
--- a/drivers/media/video/bt8xx/bttvp.h
+++ b/drivers/media/video/bt8xx/bttvp.h
@@ -458,6 +458,11 @@ struct bttv {
         __s32                   crop_start;
 };
 
+static inline struct bttv *to_bttv(struct v4l2_device *v4l2_dev)
+{
+        return container_of(v4l2_dev, struct bttv, c.v4l2_dev);
+}
+
 /* our devices */
 #define BTTV_MAX 32
 extern unsigned int bttv_num;