crypto: sun8i-ce - Fix memdup.cocci warnings

Use kmemdup rather than duplicating its implementation

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-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 f0e7c1e..b6e7c34 100644 (file)
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
@@ -396,10 +396,9 @@ int sun8i_ce_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
                kfree(op->key);
        }
        op->keylen = keylen;
-       op->key = kmalloc(keylen, GFP_KERNEL | GFP_DMA);
+       op->key = kmemdup(key, keylen, GFP_KERNEL | GFP_DMA);
        if (!op->key)
                return -ENOMEM;
-       memcpy(op->key, key, keylen);
 
        crypto_sync_skcipher_clear_flags(op->fallback_tfm, CRYPTO_TFM_REQ_MASK);
        crypto_sync_skcipher_set_flags(op->fallback_tfm, tfm->base.crt_flags & CRYPTO_TFM_REQ_MASK);
@@ -422,10 +421,9 @@ int sun8i_ce_des3_setkey(struct crypto_skcipher *tfm, const u8 *key,
                kfree(op->key);
        }
        op->keylen = keylen;
-       op->key = kmalloc(keylen, GFP_KERNEL | GFP_DMA);
+       op->key = kmemdup(key, keylen, GFP_KERNEL | GFP_DMA);
        if (!op->key)
                return -ENOMEM;
-       memcpy(op->key, key, keylen);
 
        crypto_sync_skcipher_clear_flags(op->fallback_tfm, CRYPTO_TFM_REQ_MASK);
        crypto_sync_skcipher_set_flags(op->fallback_tfm, tfm->base.crt_flags & CRYPTO_TFM_REQ_MASK);