1 files changed, 1 insertions, 1 deletions

diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h
index 3febb4b9fce9..e22ab29d2d00 100644
--- a/include/drm/drm_crtc_helper.h
+++ b/include/drm/drm_crtc_helper.h
@@ -197,7 +197,7 @@ extern int drm_helper_connector_dpms(struct drm_connector *connector, int mode);
 extern void drm_helper_move_panel_connectors_to_head(struct drm_device *);
 
 extern void drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb,
-                                           struct drm_mode_fb_cmd2 *mode_cmd);
+                                           const struct drm_mode_fb_cmd2 *mode_cmd);
 
 static inline void drm_crtc_helper_add(struct drm_crtc *crtc,
                                        const struct drm_crtc_helper_funcs *funcs)