From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753196Ab3EUMbG (ORCPT ); Tue, 21 May 2013 08:31:06 -0400 Received: from mga11.intel.com ([192.55.52.93]:3793 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750886Ab3EUMbF convert rfc822-to-8bit (ORCPT ); Tue, 21 May 2013 08:31:05 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.87,714,1363158000"; d="scan'208";a="337584210" Message-ID: <1369139460.29283.147.camel@smile> Subject: Re: dmatest regression in 3.10-rc1 From: Andy Shevchenko To: Will Deacon Cc: Vinod Koul , "djbw@fb.com" , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "andriy.shevchenko@linux.intel.com" , "viresh.kumar@linaro.org" Date: Tue, 21 May 2013 15:31:00 +0300 In-Reply-To: <20130520095857.GI31359@mudshark.cambridge.arm.com> References: <20130515152803.GL23869@mudshark.cambridge.arm.com> <20130516153553.GI11706@mudshark.cambridge.arm.com> <20130517123423.GR14863@intel.com> <20130517141857.GM23112@mudshark.cambridge.arm.com> <1369036354.29283.115.camel@smile> <20130520095857.GI31359@mudshark.cambridge.arm.com> Organization: Intel Finland Oy Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT X-Mailer: Evolution 3.4.4-3 Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2013-05-20 at 10:58 +0100, Will Deacon wrote: > Sure. They way I trigger it is to unload the module whilst the DMA is > ongoing (I'm using a software model, so I can make the DMA nice and slow -- > I guess you could try using some large buffers). Thank you for the script. It looks like I managed to reproduce it with help of your script. I'm about to send the patch. I will appreciate to collect a Tested-by tags in case it solves the issue. -- Andy Shevchenko Intel Finland Oy