From: Wei Yongjun <weiyongjun1@huawei.com>
To: Joerg Roedel <joro@8bytes.org>,
Maxime Ripard <mripard@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
Philipp Zabel <p.zabel@pengutronix.de>,
"Maxime Ripard" <maxime@cerno.tech>
Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org,
Hulk Robot <hulkci@huawei.com>,
iommu@lists.linux-foundation.org,
Wei Yongjun <weiyongjun1@huawei.com>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH -next] iommu/sun50i: Fix return value check in sun50i_iommu_probe()
Date: Tue, 19 May 2020 09:18:57 +0000 [thread overview]
Message-ID: <20200519091857.134170-1-weiyongjun1@huawei.com> (raw)
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 <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
---
drivers/iommu/sun50i-iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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;
}
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next reply other threads:[~2020-05-19 9:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-19 9:18 Wei Yongjun [this message]
2020-05-19 9:19 ` [PATCH -next] iommu/sun50i: Fix return value check in sun50i_iommu_probe() Maxime Ripard
2020-05-19 12:06 ` Joerg Roedel
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