From patchwork Tue Nov 5 14:01:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tero Kristo X-Patchwork-Id: 11227949 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 778DF14E5 for ; Tue, 5 Nov 2019 14:02:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 52F6A21882 for ; Tue, 5 Nov 2019 14:02:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="rJmfgkun" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389441AbfKEOCH (ORCPT ); Tue, 5 Nov 2019 09:02:07 -0500 Received: from lelv0142.ext.ti.com ([198.47.23.249]:45360 "EHLO lelv0142.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389342AbfKEOCH (ORCPT ); Tue, 5 Nov 2019 09:02:07 -0500 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id xA5E22bO101246; Tue, 5 Nov 2019 08:02:02 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1572962522; bh=qiitmBl9jjvBguTATL7zDt4nRfxz/HTB3erTJxZqwpQ=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=rJmfgkunIDUrTE/pNxAn6HWIkA5GvQ/1RvZnrG44UdHYwA7RJxujmPO9QoQczxoMZ NWDm2kBWDBDJs79V6JudfkcT2nVI20xe+R3PMLHUF85usQ9hEYfPIeBCSvLV1L17hE D+BxKKw7LNAnnkJS3O7grZ6VCvBN4BGf6rJSyfDc= Received: from DLEE102.ent.ti.com (dlee102.ent.ti.com [157.170.170.32]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id xA5E21FI088066 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 5 Nov 2019 08:02:01 -0600 Received: from DLEE100.ent.ti.com (157.170.170.30) by DLEE102.ent.ti.com (157.170.170.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Tue, 5 Nov 2019 08:01:46 -0600 Received: from fllv0040.itg.ti.com (10.64.41.20) by DLEE100.ent.ti.com (157.170.170.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3 via Frontend Transport; Tue, 5 Nov 2019 08:01:46 -0600 Received: from sokoban.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id xA5E1FG0068289; Tue, 5 Nov 2019 08:02:00 -0600 From: Tero Kristo To: , , CC: , Subject: [PATCHv2 21/22] crypto: omap-des: handle NULL cipher request Date: Tue, 5 Nov 2019 16:01:10 +0200 Message-ID: <20191105140111.20285-22-t-kristo@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191105140111.20285-1-t-kristo@ti.com> References: <20191105140111.20285-1-t-kristo@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org If no data is provided for DES request, just return immediately. No processing is needed in this case. Signed-off-by: Tero Kristo --- drivers/crypto/omap-des.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c index 31fc9300b990..8eda43319204 100644 --- a/drivers/crypto/omap-des.c +++ b/drivers/crypto/omap-des.c @@ -637,6 +637,9 @@ static int omap_des_crypt(struct skcipher_request *req, unsigned long mode) !!(mode & FLAGS_ENCRYPT), !!(mode & FLAGS_CBC)); + if (!req->cryptlen) + return 0; + if (!IS_ALIGNED(req->cryptlen, DES_BLOCK_SIZE)) return -EINVAL;