diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
index 50c984ac107d63b1d4e76c23f7acfc71c4910a6d..a50d1d7e9e06d740fe34dafd2b9512c84091f9ad 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.c
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
@@ -516,13 +516,6 @@ static void inno_hdmi_encoder_disable(struct drm_encoder *encoder)
 	inno_hdmi_set_pwr_mode(hdmi, LOWER_PWR);
 }
 
-static bool inno_hdmi_encoder_mode_fixup(struct drm_encoder *encoder,
-					 const struct drm_display_mode *mode,
-					 struct drm_display_mode *adj_mode)
-{
-	return true;
-}
-
 static int
 inno_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
 			       struct drm_crtc_state *crtc_state,
@@ -539,7 +532,6 @@ inno_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
 static struct drm_encoder_helper_funcs inno_hdmi_encoder_helper_funcs = {
 	.enable     = inno_hdmi_encoder_enable,
 	.disable    = inno_hdmi_encoder_disable,
-	.mode_fixup = inno_hdmi_encoder_mode_fixup,
 	.mode_set   = inno_hdmi_encoder_mode_set,
 	.atomic_check = inno_hdmi_encoder_atomic_check,
 };