diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index f782d1f6f796d51be499c702937da9c43fb9e331..dd1ee7f383cdda312271017210e49d91baa567aa 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -50,11 +50,6 @@ static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
 		drm_crtc_vblank_on(crtc);
 }
 
-static void exynos_drm_crtc_prepare(struct drm_crtc *crtc)
-{
-	/* drm framework doesn't check NULL. */
-}
-
 static void exynos_drm_crtc_commit(struct drm_crtc *crtc)
 {
 	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
@@ -108,12 +103,9 @@ static void exynos_drm_crtc_disable(struct drm_crtc *crtc)
 
 static struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
 	.dpms		= exynos_drm_crtc_dpms,
-	.prepare	= exynos_drm_crtc_prepare,
 	.commit		= exynos_drm_crtc_commit,
 	.mode_fixup	= exynos_drm_crtc_mode_fixup,
-	.mode_set	= drm_helper_crtc_mode_set,
 	.mode_set_nofb	= exynos_drm_crtc_mode_set_nofb,
-	.mode_set_base	= drm_helper_crtc_mode_set_base,
 	.disable	= exynos_drm_crtc_disable,
 };
 
@@ -190,7 +182,7 @@ static void exynos_drm_crtc_destroy(struct drm_crtc *crtc)
 }
 
 static struct drm_crtc_funcs exynos_crtc_funcs = {
-	.set_config	= drm_crtc_helper_set_config,
+	.set_config	= drm_atomic_helper_set_config,
 	.page_flip	= exynos_drm_crtc_page_flip,
 	.destroy	= exynos_drm_crtc_destroy,
 	.reset = drm_atomic_helper_crtc_reset,
diff --git a/drivers/gpu/drm/exynos/exynos_drm_encoder.c b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
index 57de0bdc5a3b4e72c42d7cc7c05dbc255c9a10a8..915de13842c0008827b0a5dbfbc71592f655dc6d 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_encoder.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
@@ -76,11 +76,6 @@ static void exynos_drm_encoder_mode_set(struct drm_encoder *encoder,
 		display->ops->mode_set(display, adjusted_mode);
 }
 
-static void exynos_drm_encoder_prepare(struct drm_encoder *encoder)
-{
-	/* drm framework doesn't check NULL. */
-}
-
 static void exynos_drm_encoder_commit(struct drm_encoder *encoder)
 {
 	struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
@@ -111,7 +106,6 @@ static struct drm_encoder_helper_funcs exynos_encoder_helper_funcs = {
 	.dpms		= exynos_drm_encoder_dpms,
 	.mode_fixup	= exynos_drm_encoder_mode_fixup,
 	.mode_set	= exynos_drm_encoder_mode_set,
-	.prepare	= exynos_drm_encoder_prepare,
 	.commit		= exynos_drm_encoder_commit,
 	.disable	= exynos_drm_encoder_disable,
 };