From ae7d292324b4be60b6d39d2e06bf2a63752f3fcd Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Tue, 19 May 2020 09:18:57 +0000 Subject: iommu/sun50i: Fix return value check in sun50i_iommu_probe() In case of error, the function devm_platform_ioremap_resource() returns ERR_PTR() not NULL. The NULL test in the return value check must be replaced with IS_ERR(). Fixes: 4100b8c229b3 ("iommu: Add Allwinner H6 IOMMU driver") Reported-by: Hulk Robot Signed-off-by: Wei Yongjun Acked-by: Maxime Ripard Link: https://lore.kernel.org/r/20200519091857.134170-1-weiyongjun1@huawei.com Signed-off-by: Joerg Roedel --- drivers/iommu/sun50i-iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/iommu') diff --git a/drivers/iommu/sun50i-iommu.c b/drivers/iommu/sun50i-iommu.c index 9c763d4a8e2a..1fa09ddcebd4 100644 --- a/drivers/iommu/sun50i-iommu.c +++ b/drivers/iommu/sun50i-iommu.c @@ -941,7 +941,7 @@ static int sun50i_iommu_probe(struct platform_device *pdev) } iommu->base = devm_platform_ioremap_resource(pdev, 0); - if (!iommu->base) { + if (IS_ERR(iommu->base)) { ret = PTR_ERR(iommu->base); goto err_free_group; } -- cgit v1.2.3