/* v4l2 ioctl call backs. we are just a wrapper for v4l2_sub_devs.  */
static struct v4l2_device* get_v4l2_dev(struct file *file)
/* v4l2 ioctl call backs. we are just a wrapper for v4l2_sub_devs.  */
static struct v4l2_device* get_v4l2_dev(struct file *file)
{
	return &((struct radio_si4713_device *)video_drvdata(file))->v4l2_dev;
}