From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: ATA device reset, shoud I be concerned? Date: Tue, 22 Jan 2008 11:08:24 +0900 Message-ID: <47955018.7000901@gmail.com> References: <200801140019.20668.g.chulkov@jacobs-university.de> <20080121164744.2f7d0ed1@lxorguk.ukuu.org.uk> <4794D020.4060204@gmail.com> <200801220231.22609.bzolnier@gmail.com> <4795488E.30706@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from wa-out-1112.google.com ([209.85.146.178]:7898 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754385AbYAVCIe (ORCPT ); Mon, 21 Jan 2008 21:08:34 -0500 Received: by wa-out-1112.google.com with SMTP id v27so4077535wah.23 for ; Mon, 21 Jan 2008 18:08:31 -0800 (PST) In-Reply-To: <4795488E.30706@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Bartlomiej Zolnierkiewicz Cc: Alan Cox , Andrew Morton , Georgi Chulkov , linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, Mark Lord Tejun Heo wrote: > Bartlomiej Zolnierkiewicz wrote: >> On Monday 21 January 2008, Tejun Heo wrote: >> >> [...] >> >>>> Old IDE says it works for PATA. For SATA I can see it might need more >>>> care and you might simply not be able to get the info. >>> Old IDE often locks up the machine hard after timeouts. I'm all for >> Could you point me to some bugreports? >> >> I would like to know more about hosts/conditions for which it happens. > > It's jmicron and all on-board jmicrons I have show the same problem. > Connect harddrrive to the controller and drive it via jmicron, hot plug > unplug SATA drives continuously, after a while, jmicron says it lost > interrupt and the machine locks up hard. BTW, those hot plug/unplugs don't have any direct relationship with the JMB controller. It's some interference or power issue, I guess. Hot plugging unrelated drives somehow locks up the jmicron driver. :-( -- tejun