[PATCH v2 4/4] crypto: sun8i-ss - use kfree_sensitive()

[Denis Efremov]

Use kfree_sensitive() instead of open-coding it.

Signed-off-by: Denis Efremov <efre...@linux.com>
---
 .../crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c   | 15 +++------------
 1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c 
b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
index 7b39b4495571..deb8b39a86db 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
@@ -368,10 +368,7 @@ void sun8i_ss_cipher_exit(struct crypto_tfm *tfm)
 {
        struct sun8i_cipher_tfm_ctx *op = crypto_tfm_ctx(tfm);
 
-       if (op->key) {
-               memzero_explicit(op->key, op->keylen);
-               kfree(op->key);
-       }
+       kfree_sensitive(op->key);
        crypto_free_skcipher(op->fallback_tfm);
        pm_runtime_put_sync(op->ss->dev);
 }
@@ -393,10 +390,7 @@ int sun8i_ss_aes_setkey(struct crypto_skcipher *tfm, const 
u8 *key,
                dev_dbg(ss->dev, "ERROR: Invalid keylen %u\n", keylen);
                return -EINVAL;
        }
-       if (op->key) {
-               memzero_explicit(op->key, op->keylen);
-               kfree(op->key);
-       }
+       kfree_sensitive(op->key);
        op->keylen = keylen;
        op->key = kmemdup(key, keylen, GFP_KERNEL | GFP_DMA);
        if (!op->key)
@@ -419,10 +413,7 @@ int sun8i_ss_des3_setkey(struct crypto_skcipher *tfm, 
const u8 *key,
                return -EINVAL;
        }
 
-       if (op->key) {
-               memzero_explicit(op->key, op->keylen);
-               kfree(op->key);
-       }
+       kfree_sensitive(op->key);
        op->keylen = keylen;
        op->key = kmemdup(key, keylen, GFP_KERNEL | GFP_DMA);
        if (!op->key)
-- 
2.26.2