[PATCH 3/5] crypto: ixp4xx - use memcpy_and_pad() in register_chain_var()

[Thorsten Blum <blum@kernel.org>]

Use memcpy_and_pad() instead of separate memcpy() and memset() calls to
simplify register_chain_var().

Signed-off-by: Thorsten Blum <blum@kernel.org>
---
 drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c b/drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c
index fdda04672454..33e8e887a415 100644
--- a/drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c
+++ b/drivers/crypto/intel/ixp4xx/ixp4xx_crypto.c
@@ -707,8 +707,7 @@ static int register_chain_var(struct crypto_tfm *tfm, u8 xpad, u32 target,
 		return -EAGAIN;
 	}
 
-	memcpy(pad, key, key_len);
-	memset(pad + key_len, 0, HMAC_PAD_BLOCKLEN - key_len);
+	memcpy_and_pad(pad, HMAC_PAD_BLOCKLEN, key, key_len, 0);
 	for (i = 0; i < HMAC_PAD_BLOCKLEN; i++)
 		pad[i] ^= xpad;