From b751bc77be809ca49d8f2607972f2eb361eaa642 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Fri, 20 Dec 2013 11:41:11 +0800 Subject: [PATCH] staging: lustre: fix return value check in capa_hmac() In case of error, the function crypto_alloc_hash() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun Signed-off-by: Greg Kroah-Hartman --- drivers/staging/lustre/lustre/obdclass/capa.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/lustre/lustre/obdclass/capa.c b/drivers/staging/lustre/lustre/obdclass/capa.c index 86deee5e70d1..be1c613383a6 100644 --- a/drivers/staging/lustre/lustre/obdclass/capa.c +++ b/drivers/staging/lustre/lustre/obdclass/capa.c @@ -272,10 +272,10 @@ int capa_hmac(__u8 *hmac, struct lustre_capa *capa, __u8 *key) alg = &capa_hmac_algs[capa_alg(capa)]; tfm = crypto_alloc_hash(alg->ha_name, 0, 0); - if (!tfm) { + if (IS_ERR(tfm)) { CERROR("crypto_alloc_tfm failed, check whether your kernel" "has crypto support!\n"); - return -ENOMEM; + return PTR_ERR(tfm); } keylen = alg->ha_keylen;