return v->index ? -EINVAL : 0;
}
-static int tef6862_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
+static int tef6862_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *f)
{
struct tef6862_state *state = to_state(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);