From nobody Thu Apr 9 09:25:49 2026 Received: from out-172.mta0.migadu.com (out-172.mta0.migadu.com [91.218.175.172]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4F5F533FE09 for ; Mon, 9 Mar 2026 21:12:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773090756; cv=none; b=eVJvXhL1B+9XZMG8k21fJeJXApucWaXCDekpugY/z5qD+STq+IDirr0wQNv+6VQOC20l3kHtMf/OmFvODrg5yJSYQFVeG/ficxWwL8mi0/Z4wakioUsfVIz2+JQVsJl/RrCZ8aQD2kr9Q+W1WM2VD7KeLKC9ecyPWLLpw6KCUGI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773090756; c=relaxed/simple; bh=XPpul2ao42q/7bFDJdqitqHKcml0oQtqR27LghI2aa8=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Bq/7dU8czbkODFPIrrHydvHZ2xFQ06P1nNJ4RFIwXdSFLiwnkp6eYp7lPEccQySFEuXxuSYbEplBorqiSTmOLcBlbrZm9oGL9yYCqDcA3rFLoQg8l4JGU1kGl01rMW8AKfT9l0rWaYERx2VVtG1pfqLb/EizSMGUjhlCNXj9qZY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=cRB9lqBc; arc=none smtp.client-ip=91.218.175.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="cRB9lqBc" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1773090743; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=cpTYeJh42cZvPRFS5bBe1Vg0lrjXL5sYMb3s1PdTh+o=; b=cRB9lqBcVUYh0qSQGWv6pDNjd5DIsGv9093zkCr3Zl/xRlo5fDDsZtRCAwyeJcxh7+ArUl TROeagEaoqOlbOktayaKscMaN1njvD6qXaGAocKpS5rfMxJxWARwjMQnbgwla2hGvDqrAz HVSjr9e5rpLCFEEs9hWvhLJAC3qxFEc= From: Thorsten Blum To: Jesper Nilsson , Lars Persson , Herbert Xu , "David S. Miller" Cc: Thorsten Blum , linux-arm-kernel@axis.com, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] crypto: artpec6 - use memcpy_and_pad to simplify prepare_hash Date: Mon, 9 Mar 2026 22:11:21 +0100 Message-ID: <20260309211119.81778-3-thorsten.blum@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1501; i=thorsten.blum@linux.dev; h=from:subject; bh=XPpul2ao42q/7bFDJdqitqHKcml0oQtqR27LghI2aa8=; b=owGbwMvMwCUWt7pQ4caZUj3G02pJDJnrzctdV9ZJeJlL1m/Wn7s+RfSWdeGsv3E2OUv3iB2Zo ZrY/z2to5SFQYyLQVZMkeXBrB8zfEtrKjeZROyEmcPKBDKEgYtTACZyqIrhf+bB3XvyX+2YqNmc cUUmcYF+SY9G9Kv0DY4OU754z44+fonhn6V/l3Nz2yYbBs+6DD+2uAuNz52z7sTGmzVwrL+6uvc 4AwA= X-Developer-Key: i=thorsten.blum@linux.dev; a=openpgp; fpr=1D60735E8AEF3BE473B69D84733678FD8DFEEAD4 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" Use memcpy_and_pad() instead of memcpy() followed by memset() to simplify artpec6_crypto_prepare_hash(). Also fix a duplicate word in a comment and remove a now-redundant one. Signed-off-by: Thorsten Blum --- drivers/crypto/axis/artpec6_crypto.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/crypto/axis/artpec6_crypto.c b/drivers/crypto/axis/art= pec6_crypto.c index b04d6379244a..a4793b76300c 100644 --- a/drivers/crypto/axis/artpec6_crypto.c +++ b/drivers/crypto/axis/artpec6_crypto.c @@ -1323,7 +1323,7 @@ static int artpec6_crypto_prepare_hash(struct ahash_r= equest *areq) =20 artpec6_crypto_init_dma_operation(common); =20 - /* Upload HMAC key, must be first the first packet */ + /* Upload HMAC key, it must be the first packet */ if (req_ctx->hash_flags & HASH_FLAG_HMAC) { if (variant =3D=3D ARTPEC6_CRYPTO) { req_ctx->key_md =3D FIELD_PREP(A6_CRY_MD_OPER, @@ -1333,11 +1333,8 @@ static int artpec6_crypto_prepare_hash(struct ahash_= request *areq) a7_regk_crypto_dlkey); } =20 - /* Copy and pad up the key */ - memcpy(req_ctx->key_buffer, ctx->hmac_key, - ctx->hmac_key_length); - memset(req_ctx->key_buffer + ctx->hmac_key_length, 0, - blocksize - ctx->hmac_key_length); + memcpy_and_pad(req_ctx->key_buffer, blocksize, ctx->hmac_key, + ctx->hmac_key_length, 0); =20 error =3D artpec6_crypto_setup_out_descr(common, (void *)&req_ctx->key_md,