[PATCH v2 3/4] crypto: sun8i-ce - use kfree_sensitive()

[Denis Efremov <efremov@xxxxxxxxx>]

Use kfree_sensitive() instead of open-coding it.

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

diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
index b4d5fea27d20..f996dc3d7dcc 100644
--- 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)
-- 
2.26.2