crypto: sun8i-ss - fix memdup.cocci warnings

Use kmemdup rather than duplicating its implementation

Generated by: scripts/coccinelle/api/memdup.cocci

Fixes: f08fcced6d00 ("crypto: allwinner - Add sun8i-ss cryptographic offloader")
CC: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
index 349cce3..f222979 100644 (file)
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
@@ -398,10 +398,9 @@ int sun8i_ss_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);
@@ -426,10 +425,9 @@ int sun8i_ss_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);