mac802154: llsec: fix return value check in llsec_key_alloc()

In case of error, the functions crypto_alloc_aead() and crypto_alloc_blkcipher()
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 <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/mac802154/llsec.c b/net/mac802154/llsec.c
index dcf73958133a..5b2be12832e6 100644
--- a/net/mac802154/llsec.c
+++ b/net/mac802154/llsec.c
@@ -134,7 +134,7 @@ llsec_key_alloc(const struct ieee802154_llsec_key *template)
         for (i = 0; i < ARRAY_SIZE(key->tfm); i++) {
                 key->tfm[i] = crypto_alloc_aead("ccm(aes)", 0,
                                                 CRYPTO_ALG_ASYNC);
-                if (!key->tfm[i])
+                if (IS_ERR(key->tfm[i]))
                         goto err_tfm;
                 if (crypto_aead_setkey(key->tfm[i], template->key,
                                        IEEE802154_LLSEC_KEY_SIZE))
@@ -144,7 +144,7 @@ llsec_key_alloc(const struct ieee802154_llsec_key *template)
         }
 
         key->tfm0 = crypto_alloc_blkcipher("ctr(aes)", 0, CRYPTO_ALG_ASYNC);
-        if (!key->tfm0)
+        if (IS_ERR(key->tfm0))
                 goto err_tfm;
 
         if (crypto_blkcipher_setkey(key->tfm0, template->key,