From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bartlomiej Zolnierkiewicz Subject: Re: ATA device reset, shoud I be concerned? Date: Tue, 22 Jan 2008 02:31:22 +0100 Message-ID: <200801220231.22609.bzolnier@gmail.com> References: <200801140019.20668.g.chulkov@jacobs-university.de> <20080121164744.2f7d0ed1@lxorguk.ukuu.org.uk> <4794D020.4060204@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from ug-out-1314.google.com ([66.249.92.169]:9709 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753520AbYAVBSa (ORCPT ); Mon, 21 Jan 2008 20:18:30 -0500 Received: by ug-out-1314.google.com with SMTP id z38so987996ugc.16 for ; Mon, 21 Jan 2008 17:18:29 -0800 (PST) In-Reply-To: <4794D020.4060204@gmail.com> Content-Disposition: inline Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Tejun Heo Cc: Alan Cox , Andrew Morton , Georgi Chulkov , linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, Mark Lord 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. > gathering more info but benefit vs. risk equation just doesn't look good > here. Why take risk for a rare device which forgets to raise IRQ on > media error? If such behavior is wide spread among PATA drives && we > can verify that TF register access after timeout is safe for PATA > controllers, sure, but currently we aren't sure about either. Thanks, Bart