VIDIOC_G_DV_TIMINGS
v4l2_disable_ioctl(&dev->vid_cap_dev, VIDIOC_G_DV_TIMINGS);
v4l2_disable_ioctl(&dev->vid_out_dev, VIDIOC_G_DV_TIMINGS);
SET_VALID_IOCTL(ops, VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings);
IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0),