Received: by 2002:ac0:a582:0:0:0:0:0 with SMTP id m2-v6csp1072240imm; Wed, 17 Oct 2018 12:53:23 -0700 (PDT) X-Google-Smtp-Source: ACcGV60jgGQWyBxqRZPbLDAiGRHqXGU1lYJUhYbRRb0FbPHsF0xBTTvydJZkKO5DZGu0WWZ+wgkU X-Received: by 2002:a17:902:369:: with SMTP id 96-v6mr26875945pld.36.1539806003167; Wed, 17 Oct 2018 12:53:23 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1539806003; cv=none; d=google.com; s=arc-20160816; b=KrI/yHF1dN8fXsIrBFmVjlyH+vNpd5en876u5uUl3F8KLZJTZZBv0YQ3MNHJ53BkB3 MWNKbBZ1JHZEZQOXD1W1cPe+ax71UuknnrA05PxtAPIK4XRZp+Ju/DNCTeLbnpLrpMhk 9uYeuw+Av+VgfDWoO1LJms1tLb8g6v4N3CIhTxZVidrJq+bkIf/5B0kAtw7iAyUUqVwe yuDwept39GE6ESanjx4fHm4UU9znNHnNGdKxJ8SZzlodu0pOF6doWUV24ad8oROGEhDB +I2SPHwAWIurRdUO0cdr3TbJBUtA7beEtzIf22atwlQL0GM0d+931fSxke6zIU912RBx Dn4w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=58jq0VyTqLdiFUDgDjziPAOKGzoxJjUMYRSsvVc30jY=; b=NuD7Uq3iNdOhjjU6npfIQavAFNVzg+/Q8DIdffEZWnLL3AIIHdpLC1lpS/kRDrwdrk y2e+MVNOepJU+qBQVvMXmG/u8kBlfKrzMZHDq7A3ore7pXUxtJznmx7nutjFs6LLPMIB 2EcRQmPuVA2RK1AejXDvX3SZsPJhFVrYkY/UQOiYbwi55Fq/qgC3oxFzzi2X4EdyRG6s AqqTBM5dFleU9laCqCJgsA3B69hw1McP0lPlCMv/Q3gPKzO0pG68x9r2QbCbXX0rnNky WazuC6AUWaZfyhx/vKkadYc2ITX2zh/QnIYHV+issFyYJBDsfAxw3VQ9zgnufcbOloCL mOgg== ARC-Authentication-Results: i=1; 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; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=iki.fi Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id t11-v6si17545804plq.280.2018.10.17.12.53.07; Wed, 17 Oct 2018 12:53:23 -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; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=iki.fi Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728094AbeJRDsI (ORCPT + 99 others); Wed, 17 Oct 2018 23:48:08 -0400 Received: from emh06.mail.saunalahti.fi ([62.142.5.116]:52698 "EHLO emh06.mail.saunalahti.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727186AbeJRDsH (ORCPT ); Wed, 17 Oct 2018 23:48:07 -0400 Received: from darkstar.musicnaut.iki.fi (85-76-99-103-nat.elisa-mobile.fi [85.76.99.103]) by emh06.mail.saunalahti.fi (Postfix) with ESMTP id A64A53000C; Wed, 17 Oct 2018 22:50:51 +0300 (EEST) Date: Wed, 17 Oct 2018 22:50:50 +0300 From: Aaro Koskinen To: Mathieu Malaterre Cc: Linux-MIPS , linux-mmc@vger.kernel.org, LKML , Ulf Hansson , Ezequiel Garcia Subject: Re: Bug report: MIPS CI20/jz4740-mmc DMA and PREEMPT_NONE Message-ID: <20181017195050.GA20347@darkstar.musicnaut.iki.fi> References: <20181014170431.GK3461@darkstar.musicnaut.iki.fi> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Wed, Oct 17, 2018 at 03:38:07PM +0200, Mathieu Malaterre wrote: > Since CONFIG_PREEMPT has been 'y' since at least commit 0752f92934292 > could you confirm that the original mmc driver (kernel from imgtech > people) did work ok with PREEMPT_NONE (sorry I did not do my homework) > ? Sorry, cannot confirm or test that. I have only used the mainline kernel on this board, since v4.5 or so with my own custom config which has been PREEMPT_NONE until now. A.