[media] em28xx: disable ioctl VIDIOC_S_PARM for VBI devices

VIDIOC_S_PARM doesn't make sense for VBI device nodes, because we don't support
selecting the number of read buffers to use.

Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/usb/em28xx/em28xx-video.c

@@ -1920,6 +1920,7 @@ int em28xx_register_analog_devices(struct em28xx *dev)
 		dev->vbi_dev->queue->lock = &dev->vb_vbi_queue_lock;
 
 		/* disable inapplicable ioctls */
+		v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM);
 		if (dev->tuner_type == TUNER_ABSENT) {
 			v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_TUNER);
 			v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_TUNER);