From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: sata_via bus errors fixed? Date: Tue, 25 Jan 2011 11:50:49 +0100 Message-ID: <20110125105049.GQ27510@htj.dyndns.org> References: <4D3DA387.8080301@mrc-lmb.cam.ac.uk> <20110124170432.GH27510@htj.dyndns.org> <4D3EA771.3070206@mrc-lmb.cam.ac.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-fx0-f46.google.com ([209.85.161.46]:46810 "EHLO mail-fx0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751492Ab1AYKu4 (ORCPT ); Tue, 25 Jan 2011 05:50:56 -0500 Received: by fxm20 with SMTP id 20so5080009fxm.19 for ; Tue, 25 Jan 2011 02:50:54 -0800 (PST) Content-Disposition: inline In-Reply-To: <4D3EA771.3070206@mrc-lmb.cam.ac.uk> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Dave Howorth Cc: linux-ide@vger.kernel.org Hello, (please always reply-to-all) On Tue, Jan 25, 2011 at 10:35:29AM +0000, Dave Howorth wrote: > dmesg http://pastebin.com/FF3ZtcXy > lspci http://pastebin.com/u5y8XrWm > smartctl-a-dev-sda http://pastebin.com/m5YNRw2t > var-log-messages http://pastebin.com/mVrkyTF2 Hmmm.... > Yes, a hardware glitch does seem the strongest candidate. But the newish > kernel does seem to make it completely solid AFAICT. Cash-wise my > alternative is a new mobo, cpu, ram & psu so there's a bit of an > incentive to persevere. But mostly I guess it's just a perverse desire > to understand what's going on that is driving me. Oh, I love bug reporters with such desire. I love you. :-) > I suppose I could try various kernel versions to see if it's possible to > isolate one change that causes the improved behaviour. That would be a > bit of a learning curve and I'm not sure how much time it would need. Yes, that definitely would be a good idea. The first thing I would try is disabling the VIA FIFO workaround completely and see whether that makes any difference. ie. Comment out the last section of svia_configure() in the latest kernel and see if the problems occur again. If that's the case, it could be that you were seeing two separate problems on via and sil. Digging down what sil was complaining about would be interesting in that case. If that's not the case, it could be something which seems unrelated - some ACPI or cpufreq change or whatnot. The best way to find out would be bisection. Thanks. -- tejun