From: Thorsten Blum <thorsten.blum@linux.dev>
Date: Sat, 16 May 2026 23:42:12 +0000 (+0200)
Subject: crypto: atmel-sha - use memcpy_and_pad to simplify hmac_setup
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=08b0f3a77561550d2358c73ceba59e1c5fa5721a;p=thirdparty%2Fkernel%2Flinux.git

crypto: atmel-sha - use memcpy_and_pad to simplify hmac_setup

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

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c
index 7e7c83a3d8cda..8e3b8efa8109a 100644
--- a/drivers/crypto/atmel-sha.c
+++ b/drivers/crypto/atmel-sha.c
@@ -1724,8 +1724,7 @@ 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);
 }