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crypto: atmel - fix checks of error code returned by devm_ioremap_resource() 

The change fixes potential oops while accessing iomem on invalid
address, if devm_ioremap_resource() fails due to some reason.

The devm_ioremap_resource() function returns ERR_PTR() and never
returns NULL, which makes useless a following check for NULL.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Fixes: b0e8b3417a ("crypto: atmel - use devm_xxx() managed function")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Vladimir Zapolskiy 2016-03-06 03:21:52 +02:00 committed by Herbert Xu
parent 84a0ced0b6
commit 9b52d55f4f
3 changed files with 6 additions and 6 deletions
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4
drivers/crypto/atmel-aes.c
View File

@ -2079,9 +2079,9 @@ static int atmel_aes_probe(struct platform_device *pdev)
}
aes_dd->io_base = devm_ioremap_resource(&pdev->dev, aes_res);
if (!aes_dd->io_base) {
if (IS_ERR(aes_dd->io_base)) {
dev_err(dev, "can't ioremap\n");
err = -ENOMEM;
err = PTR_ERR(aes_dd->io_base);
goto res_err;
}

4
drivers/crypto/atmel-sha.c
View File

@ -1486,9 +1486,9 @@ static int atmel_sha_probe(struct platform_device *pdev)
}
sha_dd->io_base = devm_ioremap_resource(&pdev->dev, sha_res);
if (!sha_dd->io_base) {
if (IS_ERR(sha_dd->io_base)) {
dev_err(dev, "can't ioremap\n");
err = -ENOMEM;
err = PTR_ERR(sha_dd->io_base);
goto res_err;
}

4
drivers/crypto/atmel-tdes.c
View File

@ -1417,9 +1417,9 @@ static int atmel_tdes_probe(struct platform_device *pdev)
}
tdes_dd->io_base = devm_ioremap_resource(&pdev->dev, tdes_res);
if (!tdes_dd->io_base) {
if (IS_ERR(tdes_dd->io_base)) {
dev_err(dev, "can't ioremap\n");
err = -ENOMEM;
err = PTR_ERR(tdes_dd->io_base);
goto res_err;
}