Messages in this thread Patch in this message | | | Date | Mon, 10 Dec 2012 02:11:13 -0500 | Subject | [PATCH -next v2] drm/exynos/iommu: fix return value check in drm_create_iommu_mapping() | From | Wei Yongjun <> |
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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 | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_iommu.c b/drivers/gpu/drm/exynos/exynos_drm_iommu.c index 09db198..2482b7f 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_iommu.c +++ b/drivers/gpu/drm/exynos/exynos_drm_iommu.c @@ -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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