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

[Subash Patel]

From: Subash Patel <subash.rp at 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 at linaro.org>
CC: dri-devel at lists.freedesktop.org
CC: linux-samsung-soc at vger.kernel.org
CC: linaro-mm-sig at lists.linaro.org
CC: inki.dae at samsung.com
CC: airlied at redhat.com
CC: olofj at chromium.org
---
 drivers/gpu/drm/exynos/exynos_drm_dmabuf.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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;
 	}
-- 
1.7.9.5