From: Seung-Woo Kim <sw0312....@samsung.com>

Signed-off-by: Seung-Woo Kim <sw0312.kim at samsung.com>
Signed-off-by: Inki Dae <inki.dae at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_encoder.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_encoder.c 
b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
index f15da95..866f419 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_encoder.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
@@ -283,7 +283,8 @@ void exynos_drm_encoder_crtc_mode_set(struct drm_encoder 
*encoder, void *data)
        struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops;
        struct exynos_drm_overlay *overlay = data;

-       overlay_ops->mode_set(manager->dev, overlay);
+       if (overlay_ops && overlay_ops->mode_set)
+               overlay_ops->mode_set(manager->dev, overlay);
 }

 void exynos_drm_encoder_crtc_disable(struct drm_encoder *encoder, void *data)
@@ -294,7 +295,8 @@ void exynos_drm_encoder_crtc_disable(struct drm_encoder 
*encoder, void *data)

        DRM_DEBUG_KMS("\n");

-       overlay_ops->disable(manager->dev);
+       if (overlay_ops && overlay_ops->disable)
+               overlay_ops->disable(manager->dev);

        /*
         * crtc is already detached from encoder and last
-- 
1.7.4.1

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