diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index 5eca3184a74786dd3e747ffa0a6fc26fbe698a49..bc71aa2b78728d1c241682ce9eee852faafade13 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -872,7 +872,7 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 	ret = drm_modeset_lock(&crtc->mutex, &ctx);
 	if (ret)
 		goto out;
-	ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx);
+	ret = drm_modeset_lock(&crtc->primary->mutex, &ctx);
 	if (ret)
 		goto out;