VIDIOC_G_CROP
v4l2_disable_ioctl(vfd, VIDIOC_G_CROP);
__set_bit(_IOC_NR(VIDIOC_G_CROP), valid_ioctls);
IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),