diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index e73cbdaa18df..5ef03c216a27 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -1077,7 +1077,7 @@ void drm_wait_one_vblank(struct drm_device *dev, int crtc)
 	u32 last;
 
 	ret = drm_vblank_get(dev, crtc);
-	if (WARN_ON(ret))
+	if (WARN(ret, "vblank not available on crtc %i, ret=%i\n", crtc, ret))
 		return;
 
 	last = drm_vblank_count(dev, crtc);
@@ -1086,7 +1086,7 @@ void drm_wait_one_vblank(struct drm_device *dev, int crtc)
 				 last != drm_vblank_count(dev, crtc),
 				 msecs_to_jiffies(100));
 
-	WARN_ON(ret == 0);
+	WARN(ret == 0, "vblank wait timed out on crtc %i\n", crtc);
 
 	drm_vblank_put(dev, crtc);
 }