From 104a32e85f250742bc37e14d19a5dec706bed76e Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Fri, 16 Sep 2016 01:50:01 +0000 Subject: [PATCH] hwrng: geode - fix return value check in mod_init() In case of error, the function devm_ioremap() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Fixes: 6e9b5e76882c ("hwrng: geode - Migrate to managed API") Signed-off-by: Wei Yongjun Signed-off-by: Herbert Xu --- drivers/char/hw_random/geode-rng.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/char/hw_random/geode-rng.c b/drivers/char/hw_random/geode-rng.c index 0cae21086c05..e7a245942029 100644 --- a/drivers/char/hw_random/geode-rng.c +++ b/drivers/char/hw_random/geode-rng.c @@ -95,8 +95,8 @@ static int __init mod_init(void) return -ENODEV; mem = devm_ioremap(&pdev->dev, rng_base, 0x58); - if (IS_ERR(mem)) - return PTR_ERR(mem); + if (!mem) + return -ENOMEM; geode_rng.priv = (unsigned long)mem; pr_info("AMD Geode RNG detected\n");