gpu/drm/drm_vblank.c

135  * &drm_driver.max_vblank_count. In that case the vblank core only disables the
202 	return vblank->max_vblank_count ?: dev->max_vblank_count;
295 	u32 max_vblank_count = drm_max_vblank_count(dev, pipe);
300 	 * NOTE!  It's possible we lost a full dev->max_vblank_count + 1 events
314 	if (max_vblank_count) {
316 		diff = (cur_vblank - vblank->last) & max_vblank_count;
1441  * @max_vblank_count: max hardware vblank counter value
1456 				   u32 max_vblank_count)
1461 	drm_WARN_ON(dev, dev->max_vblank_count);
1464 	vblank->max_vblank_count = max_vblank_count;
1517 	u32 max_vblank_count = drm_max_vblank_count(dev, pipe);
1544 	vblank->last = (cur_vblank - diff) & max_vblank_count;