VIDIOC_S_FBUF
v4l2_disable_ioctl(&dev->vid_out_dev, VIDIOC_S_FBUF);
return VIDIOC_S_FBUF;
SET_VALID_IOCTL(ops, VIDIOC_S_FBUF, vidioc_s_fbuf);
IOCTL_INFO(VIDIOC_S_FBUF, v4l_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),