static void check_timers(struct v4l2_loopback_device *dev)
{
	if (!dev->ready_for_capture)
		return;

	if (dev->timeout_jiffies > 0 && !timer_pending(&dev->timeout_timer))
		mod_timer(&dev->timeout_timer, jiffies + dev->timeout_jiffies);
	if (dev->sustain_framerate && !timer_pending(&dev->sustain_timer))
		mod_timer(&dev->sustain_timer,
			  jiffies + dev->frame_jiffies * 3 / 2);
}