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[209.132.180.67]) by mx.google.com with ESMTP id e1si4851105pgt.423.2018.04.13.16.53.44; Fri, 13 Apr 2018 16:54:00 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751108AbeDMXw0 (ORCPT + 99 others); Fri, 13 Apr 2018 19:52:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:45520 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750783AbeDMXwY (ORCPT ); Fri, 13 Apr 2018 19:52:24 -0400 Received: from saruman (jahogan.plus.com [212.159.75.221]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 20F3521777; Fri, 13 Apr 2018 23:52:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 20F3521777 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=jhogan@kernel.org Date: Sat, 14 Apr 2018 00:52:18 +0100 From: James Hogan To: Sinan Kaya Cc: linux-mips@linux-mips.org, arnd@arndb.de, timur@codeaurora.org, sulrich@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Ralf Baechle , Paul Burton , linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 2/2] MIPS: io: add a barrier after register read in readX() Message-ID: <20180413235217.GA19138@saruman> References: <1523586646-19630-1-git-send-email-okaya@codeaurora.org> <1523586646-19630-2-git-send-email-okaya@codeaurora.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="UugvWAfsgieZRqgk" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.7.2 (2016-11-26) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --UugvWAfsgieZRqgk Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Apr 12, 2018 at 10:33:42PM -0400, Sinan Kaya wrote: > On 4/12/2018 10:30 PM, Sinan Kaya wrote: > > + /* prevent prefetching of coherent DMA dma prematurely */ \ >=20 > I tried to write DMA data but my keyboard is not cooperating. I'll hold o= nto > posting another version until I hear back from you for wmb(). No problem, I've applied both for 4.17 and tweaked the comment. 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