crypto: sun8i-ce - use kfree_sensitive()

Use kfree_sensitive() instead of open-coding it.

Signed-off-by: Denis Efremov <efremov@linux.com>
Acked-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
index b4d5fea..f996dc3 100644 (file)
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
@@ -366,10 +366,7 @@ void sun8i_ce_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_suspend(op->ce->dev);
 }
@@ -391,10 +388,7 @@ int sun8i_ce_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
                dev_dbg(ce->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)
@@ -416,10 +410,7 @@ int sun8i_ce_des3_setkey(struct crypto_skcipher *tfm, const u8 *key,
        if (err)
                return err;
 
-       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)