[PATCH] crypto: atmel-sha - use memcpy_and_pad to simplify hmac_setup

[Thorsten Blum]

Use memcpy_and_pad() instead of memcpy() followed by memset() to
simplify atmel_sha_hmac_setup().

Signed-off-by: Thorsten Blum <thorsten.blum at linux.dev>
---
 drivers/crypto/atmel-sha.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c
index 1f1341a16c42..f60c7c8cf912 100644
--- a/drivers/crypto/atmel-sha.c
+++ b/drivers/crypto/atmel-sha.c
@@ -1731,8 +1731,7 @@ static int atmel_sha_hmac_setup(struct atmel_sha_dev *dd,
 		return atmel_sha_hmac_prehash_key(dd, key, keylen);
 
 	/* Prepare ipad. */
-	memcpy((u8 *)hmac->ipad, key, keylen);
-	memset((u8 *)hmac->ipad + keylen, 0, bs - keylen);
+	memcpy_and_pad(hmac->ipad, bs, key, keylen, 0);
 	return atmel_sha_hmac_compute_ipad_hash(dd);
 }