The crypto_alloc_shash() function never returns NULL. It returns error pointers. Fixes: 801b7d572c0a ("crypto: sun8i-ss - add hmac(sha1)") Signed-off-by: Peng Wu <wupeng58@xxxxxxxxxx> Reported-by: Hulk Robot <hulkci@xxxxxxxxxx> --- drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c index ac417a6b39e5..90334e435673 100644 --- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c +++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c @@ -30,8 +30,8 @@ static int sun8i_ss_hashkey(struct sun8i_ss_hash_tfm_ctx *tfmctx, const u8 *key, int ret = 0; xtfm = crypto_alloc_shash("sha1", 0, CRYPTO_ALG_NEED_FALLBACK); - if (!xtfm) - return -ENOMEM; + if (IS_ERR(xtfm)) + return PTR_ERR(xtfm); len = sizeof(*sdesc) + crypto_shash_descsize(xtfm); sdesc = kmalloc(len, GFP_KERNEL); -- 2.17.1