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

[Denis Efremov]

Use kfree_sensitive() instead of open-coding it.

Signed-off-by: Denis Efremov <efre...@linux.com>
---
 drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c | 9 +++------
 1 file changed, 3 insertions(+), 6 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..49d89b31eb6b 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
@@ -369,8 +369,7 @@ 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);
@@ -394,8 +393,7 @@ int sun8i_ss_aes_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);
@@ -420,8 +418,7 @@ int sun8i_ss_des3_setkey(struct crypto_skcipher *tfm, const 
u8 *key,
        }
 
        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);
-- 
2.26.2