drm/exynos: checked for null pointer

Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_encoder.c b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
index f15da95..866f419 100644 (file)
--- 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