crypto: sun8i-ss - fix a NULL vs IS_ERR() check in sun8i_ss_hashkey

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@huawei.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
index 845019b..36a82b2 100644 (file)
--- 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);