Commit a0e41b56 authored by Wei Yongjun's avatar Wei Yongjun Committed by Inki Dae

drm/exynos/iommu: fix return value check in drm_create_iommu_mapping()

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: default avatarWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
parent ddd8e959
......@@ -56,8 +56,8 @@ 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)
return -ENOMEM;
if (IS_ERR(mapping))
return PTR_ERR(mapping);
dev->dma_parms = devm_kzalloc(dev, sizeof(*dev->dma_parms),
GFP_KERNEL);
......
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