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[2/2] DRM: Exynos: check for null in return value of dma_buf_map_attachment()

Message ID 1340648182-28329-3-git-send-email-subash.ramaswamy@linaro.org
State Superseded
Headers show

Commit Message

Subash Patel June 25, 2012, 6:16 p.m. UTC 
From: Subash Patel <subash.rp@samsung.com>

dma_buf_map_attachment() can return NULL and valid sg as return
value. Hence the check for the returned scatter-gather must be using
the inline function IS_ERR_OR_NULL() in place of IS_ERR()

Change-Id: I33218480e220f6a26a1e726b336bf533a95363de
Signed-off-by: Subash Patel <subash.ramaswamy@linaro.org>
CC: dri-devel@lists.freedesktop.org
CC: linux-samsung-soc@vger.kernel.org
CC: linaro-mm-sig@lists.linaro.org
CC: inki.dae@samsung.com
CC: airlied@redhat.com
CC: olofj@chromium.org
---
 drivers/gpu/drm/exynos/exynos_drm_dmabuf.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox

Patch

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
index 52cf761..c908a29 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
@@ -245,7 +245,7 @@  struct drm_gem_object *exynos_dmabuf_prime_import(struct drm_device *drm_dev,
 
 
 	sgt = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL);
-	if (IS_ERR(sgt)) {
+	if (IS_ERR_OR_NULL(sgt)) {
 		ret = PTR_ERR(sgt);
 		goto err_buf_detach;
 	}