2012/12/7 Wei Yongjun <weiyj.lk@gmail.com>

From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

In case of error, function arm_iommu_create_mapping() returns
ERR_PTR() and never returns NULL. The NULL test in the return
value check should be replaced with IS_ERR().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
---
drivers/gpu/drm/exynos/exynos_drm_iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_iommu.c b/drivers/gpu/drm/exynos/exynos_drm_iommu.c
index 09db198..3b3d3a6 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_iommu.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_iommu.c
@@ -56,7 +56,7 @@ int drm_create_iommu_mapping(struct drm_device *drm_dev)
mapping = arm_iommu_create_mapping(&platform_bus_type, priv->da_start,
priv->da_space_size,
priv->da_space_order);
- if (!mapping)
+ if (IS_ERR(mapping))
return -ENOMEM;

dev->dma_parms = devm_kzalloc(dev, sizeof(*dev->dma_parms),

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