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authorVladimir Zapolskiy <vz@mleia.com>2016-03-06 03:21:52 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2016-03-11 21:19:19 +0800
commit9b52d55f4f0e2bb9a34abbcf99e05e17f1b3b281 (patch)
tree405dc4efa814dc0e2e32d43558d155e9446d0de4 /drivers/crypto/atmel-sha.c
parent84a0ced0b6b47755bf26931ad5ed0ad267139964 (diff)
downloadlinux-9b52d55f4f0e2bb9a34abbcf99e05e17f1b3b281.tar.bz2
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: b0e8b3417a62 ("crypto: atmel - use devm_xxx() managed function") Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/atmel-sha.c')
-rw-r--r--drivers/crypto/atmel-sha.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c
index 7b93586154a7..4b2dd95782bf 100644
--- a/drivers/crypto/atmel-sha.c
+++ b/drivers/crypto/atmel-sha.c
@@ -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;
}