VIDIOC_S_CROP
v4l2_disable_ioctl(vfd, VIDIOC_S_CROP);
__set_bit(_IOC_NR(VIDIOC_S_CROP), valid_ioctls);
IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),