diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index 710516815de754ebd1f98391a8e7b561fb2d924f..b04cf5332599a2d019f5da08e17050ffadde2903 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -346,8 +346,8 @@ drm_crtc_prepare_encoders(struct drm_device *dev)
  * drm_crtc_set_mode - set a mode
  * @crtc: CRTC to program
  * @mode: mode to use
- * @x: width of mode
- * @y: height of mode
+ * @x: horizontal offset into the surface
+ * @y: vertical offset into the surface
  *
  * LOCKING:
  * Caller must hold mode config lock.