linux-kernel - [PATCH 10/10] drm/exynos: checked for null pointer

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Message-id: <1320408599-7475-11-git-send-email-sw0312.kim@samsung.com>
Date:	Fri, 04 Nov 2011 21:09:59 +0900
From:	Seung-Woo Kim <sw0312.kim@...sung.com>
To:	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	airlied@...hat.com
Cc:	sw0312.kim@...sung.com, kyungmin.park@...sung.com,
	jy0922.shim@...sung.com, inki.dae@...sung.com
Subject: [PATCH 10/10] drm/exynos: checked for null pointer

Signed-off-by: Seung-Woo Kim <sw0312.kim@...sung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@...sung.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 4092f41..2d7a03c 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_encoder.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
@@ -290,7 +290,8 @@ 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)
@@ -301,7 +302,8 @@ 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);
 }
 
 MODULE_AUTHOR("Inki Dae <inki.dae@...sung.com>");
-- 
1.7.4.1

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