Received: by 2002:a05:6a10:6d10:0:0:0:0 with SMTP id gq16csp721200pxb; Thu, 21 Apr 2022 08:57:22 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzAdFSphF3qNBRE805fqaFRTRSwqXpiW0cR55jHsCSlITiaMzh2pKBx75R267mosAIaZbr6 X-Received: by 2002:a17:902:f115:b0:158:7d42:e2ff with SMTP id e21-20020a170902f11500b001587d42e2ffmr203327plb.106.1650556642375; Thu, 21 Apr 2022 08:57:22 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1650556642; cv=none; d=google.com; s=arc-20160816; b=njWZaaf1wFnaDGdBnGmy1/mDxWgnDqrEaY5f9pfwgFwIUPSaeaZdDMeQcTqmY8YCiv ZYOIy5pkgran/bd/ORWFuhcwcrhXcvgdOHYlmVmQs+36VfO++R3lEQCRB2sT4yL/F/Qt KNrj+2FcJ2Ft8run+xtvO0I/ebi7yR/4Xs3/hg0laIrvFRiHJNkptUzd3EKPzPIOWNdN yQK5m9S+82+0Ns2CK1MsdoyZ/G12GTbAk29xYn6CiwaVJU0zaYbW4yG8kJdZzzUWUqjX i1kD4HxBPh79uDatJ6ZU7ko7BpL/goP7a3nEIX66MQR5ZAatL1stvcbcFlTJuQmz3cI1 58kA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date; bh=LQ72ATBVnArl/Gr2jaPZQsoNEiqbGEyUMgQpWS5U3zU=; b=INSFGpMrhVwVtzBju4bhY3ggPbp5fiYv0Uqer0yuqQS7WdyUcuzlyeOlZKzIsqZrrX jl/n2GGG+WhLtUSx0ARwZjIGDQfol5H2VHSy1MQqtbS2G6wdIwVwU//8jVy1TSReg7je lfJfUeqiHvvWHHc4RVqUdIu4Wf5MAckCoR5TW4MLR1y2xyXHjv/+eeLOGW/I1mI7QNhv KBkI8RM7GjNJEYnjGCu2rNbC2gRmgMM27v8ZBHMmnnyLCQuohRnQ5la9aihM3YBZxPt6 IPifipXPBPZ9HqxLnIxFKrugBkp4fyBx7GtGkBEWUFqOINXeqVkroELBKvZG6eVE+EJh xAmw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id i136-20020a636d8e000000b003aa7849bc69si4233396pgc.134.2022.04.21.08.57.07; Thu, 21 Apr 2022 08:57:22 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1387897AbiDUJyJ (ORCPT + 99 others); Thu, 21 Apr 2022 05:54:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56114 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239338AbiDUJyG (ORCPT ); Thu, 21 Apr 2022 05:54:06 -0400 Received: from fornost.hmeau.com (helcar.hmeau.com [216.24.177.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BE7C21261B; Thu, 21 Apr 2022 02:51:15 -0700 (PDT) Received: from gwarestrin.arnor.me.apana.org.au ([192.168.103.7]) by fornost.hmeau.com with smtp (Exim 4.94.2 #2 (Debian)) id 1nhTSj-005CrB-4r; Thu, 21 Apr 2022 19:50:58 +1000 Received: by gwarestrin.arnor.me.apana.org.au (sSMTP sendmail emulation); Thu, 21 Apr 2022 17:50:57 +0800 Date: Thu, 21 Apr 2022 17:50:57 +0800 From: Herbert Xu To: Corentin Labbe Cc: arno@natisbad.org, bbrezillon@kernel.org, schalla@marvell.com, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/2] crypto: marvell: cesa: Add fallback for handling empty length case Message-ID: References: <20220413191155.1429137-1-clabbe@baylibre.com> <20220413191155.1429137-2-clabbe@baylibre.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220413191155.1429137-2-clabbe@baylibre.com> X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 13, 2022 at 07:11:55PM +0000, Corentin Labbe wrote: > The driver does not handle case where cryptlen is zero and fail crypto selftests. > So let's add a fallback for this case. Wouldn't it be easier to just handle this in the software? After all, a zero encryption/decryption is just a no-op, right? Thanks, -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt