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),