linux-kernel - [PATCH v2 2/4] crypto: amlogic

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Message-Id: <20200827064402.7130-3-efremov@linux.com>
Date:   Thu, 27 Aug 2020 09:44:00 +0300
From:   Denis Efremov <efremov@...ux.com>
To:     linux-crypto@...r.kernel.org
Cc:     Denis Efremov <efremov@...ux.com>,
        Corentin Labbe <clabbe.montjoie@...il.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/4] crypto: amlogic - use kfree_sensitive()

Use kfree_sensitive() instead of open-coding it.

Signed-off-by: Denis Efremov <efremov@...ux.com>
---
 drivers/crypto/amlogic/amlogic-gxl-cipher.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/crypto/amlogic/amlogic-gxl-cipher.c b/drivers/crypto/amlogic/amlogic-gxl-cipher.c
index d93210726697..ee5998af2fe8 100644
--- a/drivers/crypto/amlogic/amlogic-gxl-cipher.c
+++ b/drivers/crypto/amlogic/amlogic-gxl-cipher.c
@@ -340,10 +340,7 @@ void meson_cipher_exit(struct crypto_tfm *tfm)
 {
 	struct meson_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);
 }
 
@@ -367,10 +364,7 @@ int meson_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
 		dev_dbg(mc->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)
-- 
2.26.2