diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
index 673164b331c8..9fd12c621270 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -1155,13 +1155,6 @@ static int exynos_dp_create_connector(struct drm_encoder *encoder)
 	return 0;
 }
 
-static bool exynos_dp_mode_fixup(struct drm_encoder *encoder,
-				 const struct drm_display_mode *mode,
-				 struct drm_display_mode *adjusted_mode)
-{
-	return true;
-}
-
 static void exynos_dp_mode_set(struct drm_encoder *encoder,
 			       struct drm_display_mode *mode,
 			       struct drm_display_mode *adjusted_mode)
@@ -1177,7 +1170,6 @@ static void exynos_dp_disable(struct drm_encoder *encoder)
 }
 
 static const struct drm_encoder_helper_funcs exynos_dp_encoder_helper_funcs = {
-	.mode_fixup = exynos_dp_mode_fixup,
 	.mode_set = exynos_dp_mode_set,
 	.enable = exynos_dp_enable,
 	.disable = exynos_dp_disable,
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dpi.c b/drivers/gpu/drm/exynos/exynos_drm_dpi.c
index 05350ae0785b..75e570f45259 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dpi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dpi.c
@@ -128,13 +128,6 @@ static int exynos_dpi_create_connector(struct drm_encoder *encoder)
 	return 0;
 }
 
-static bool exynos_dpi_mode_fixup(struct drm_encoder *encoder,
-				  const struct drm_display_mode *mode,
-				  struct drm_display_mode *adjusted_mode)
-{
-	return true;
-}
-
 static void exynos_dpi_mode_set(struct drm_encoder *encoder,
 				struct drm_display_mode *mode,
 				struct drm_display_mode *adjusted_mode)
@@ -162,7 +155,6 @@ static void exynos_dpi_disable(struct drm_encoder *encoder)
 }
 
 static const struct drm_encoder_helper_funcs exynos_dpi_encoder_helper_funcs = {
-	.mode_fixup = exynos_dpi_mode_fixup,
 	.mode_set = exynos_dpi_mode_set,
 	.enable = exynos_dpi_enable,
 	.disable = exynos_dpi_disable,
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index e977a81af2e6..736115c580fc 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -1597,13 +1597,6 @@ static int exynos_dsi_create_connector(struct drm_encoder *encoder)
 	return 0;
 }
 
-static bool exynos_dsi_mode_fixup(struct drm_encoder *encoder,
-				  const struct drm_display_mode *mode,
-				  struct drm_display_mode *adjusted_mode)
-{
-	return true;
-}
-
 static void exynos_dsi_mode_set(struct drm_encoder *encoder,
 				struct drm_display_mode *mode,
 				struct drm_display_mode *adjusted_mode)
@@ -1623,7 +1616,6 @@ static void exynos_dsi_mode_set(struct drm_encoder *encoder,
 }
 
 static const struct drm_encoder_helper_funcs exynos_dsi_encoder_helper_funcs = {
-	.mode_fixup = exynos_dsi_mode_fixup,
 	.mode_set = exynos_dsi_mode_set,
 	.enable = exynos_dsi_enable,
 	.disable = exynos_dsi_disable,
diff --git a/drivers/gpu/drm/exynos/exynos_drm_vidi.c b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
index 62ac4e5fa51d..65108cbd79d4 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_vidi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
@@ -410,13 +410,6 @@ static int vidi_create_connector(struct drm_encoder *encoder)
 	return 0;
 }
 
-static bool exynos_vidi_mode_fixup(struct drm_encoder *encoder,
-				 const struct drm_display_mode *mode,
-				 struct drm_display_mode *adjusted_mode)
-{
-	return true;
-}
-
 static void exynos_vidi_mode_set(struct drm_encoder *encoder,
 			       struct drm_display_mode *mode,
 			       struct drm_display_mode *adjusted_mode)
@@ -432,7 +425,6 @@ static void exynos_vidi_disable(struct drm_encoder *encoder)
 }
 
 static const struct drm_encoder_helper_funcs exynos_vidi_encoder_helper_funcs = {
-	.mode_fixup = exynos_vidi_mode_fixup,
 	.mode_set = exynos_vidi_mode_set,
 	.enable = exynos_vidi_enable,
 	.disable = exynos_vidi_disable,