From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E8269C2D0DA for ; Thu, 26 Dec 2019 11:04:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B4F97206CB for ; Thu, 26 Dec 2019 11:04:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=cogentembedded-com.20150623.gappssmtp.com header.i=@cogentembedded-com.20150623.gappssmtp.com header.b="Mfvwn7FJ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726475AbfLZLEH (ORCPT ); Thu, 26 Dec 2019 06:04:07 -0500 Received: from mail-lf1-f66.google.com ([209.85.167.66]:34054 "EHLO mail-lf1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726074AbfLZLEH (ORCPT ); Thu, 26 Dec 2019 06:04:07 -0500 Received: by mail-lf1-f66.google.com with SMTP id l18so10121247lfc.1 for ; Thu, 26 Dec 2019 03:04:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cogentembedded-com.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=dMuzKwiDG9erY21rvfOIFhgZeA3agNAcCiJiS61PwtU=; b=Mfvwn7FJa6uuSnyUZWdsYRK1BPLGVGTda71DdZ00VryPu2xgB1/ctUYu/DTy7RZEBi 7WN5JGj/upLjqTsuPs4V2T5acL2Zq1Bq/vuEPKVQbbgH1aMu830hXCyMWfgHiq9oauTF I715D1xkH6jylQT3zBZwRcthpgW4qDU2EyRBgX/PCTxGjqPupcuIkgI2RXIphW6imggK El2LjR1GV1WNIkf8sTYlEXQo5vADwL3h4p2TKvk386Sqh4hdQTUVzLSL6bsopQgqA1C/ gMd5LoepahntJyZCkTAktCFj5X1/ob6G5iwqU+NSTXF2RErppyu1h+6fHPSqflHPXHNL r/LQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=dMuzKwiDG9erY21rvfOIFhgZeA3agNAcCiJiS61PwtU=; b=Ujlbr7KfKjAWpc72WCwYTT2wG8FfYycznfiIku7yDk8sgFFTEdx9iF03dkgECucCOa xlcpIqoSDa4Z0C8wxqIKyjTPaL9REbnup0BBKbOUYP3rER3XbG3D59AIKKiZRbgmXSrZ KTvOg/Xvp4jBIZpnE075ETUMC2TU7ItL62G9Vb9oDk85zfdZjQY0DfU9zfd3P43YPlyb QD942nxSFj17hfP8O8fRPeG2uFh4jCrQUOwNXZI+p4q01A39LqA/e9A0R2jgVfm0FCvV uY+rX4tg7MFg3nkKscvO5PmiRQDwnkmHWvbiiADBKJyZ31/hQ1/Rbqfc/Kt6uZKCND3+ tRiA== X-Gm-Message-State: APjAAAVWpTpAfNFkmCIWKEgGQm64gfPkUlog3lssJmYMCzFL2h1SqIuo 1Y5/O7YjJQZY0tt4JaiAbZiG9g== X-Google-Smtp-Source: APXvYqxyty1Ur5C7kdZ8TaFQIOjjXKTBfsFDaeaWxLUho5PXnAcZgwjh39AF42C5Amhhl1+IARuWYQ== X-Received: by 2002:ac2:5605:: with SMTP id v5mr26169631lfd.136.1577358245281; Thu, 26 Dec 2019 03:04:05 -0800 (PST) Received: from ?IPv6:2a00:1fa0:867:b21c:a50d:bd68:cd46:4921? ([2a00:1fa0:867:b21c:a50d:bd68:cd46:4921]) by smtp.gmail.com with ESMTPSA id d24sm12128249lja.82.2019.12.26.03.04.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 26 Dec 2019 03:04:04 -0800 (PST) Subject: Re: [PATCH] scsi: don't memset to zero after dma_alloc_coherent To: yu kuai , ysato@users.sourceforge.jp, dalias@libc.org, aacraid@microsemi.com, jejb@linux.ibm.com, martin.petersen@oracle.com, sathya.prakash@broadcom.com, chaitra.basappa@broadcom.com, suganath-prabu.subramani@broadcom.com Cc: linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, MPT-FusionLinux.pdl@broadcom.com, zhengbin13@huawei.com, yi.zhang@huawei.com References: <20191225132327.7121-1-yukuai3@huawei.com> From: Sergei Shtylyov Message-ID: Date: Thu, 26 Dec 2019 14:03:55 +0300 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.3.1 MIME-Version: 1.0 In-Reply-To: <20191225132327.7121-1-yukuai3@huawei.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! On 25.12.2019 16:23, yu kuai wrote: > dma_alloc_coherent already zeros out memory, so memset to zero is not > needed. > > Signed-off-by: yu kuai > --- > arch/sh/mm/consistent.c | 2 -- How this one is related to SCSI? > drivers/scsi/dpt_i2o.c | 4 ---- > drivers/scsi/mpt3sas/mpt3sas_base.c | 1 - > drivers/scsi/mvsas/mv_init.c | 4 ---- > drivers/scsi/pmcraid.c | 1 - > 5 files changed, 12 deletions(-) [...] MBR, Sergei