From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Lord Subject: Re: libata fails to recover from HSM violation involving DRQ status Date: Sun, 29 Apr 2007 15:07:57 -0400 Message-ID: <4634ED0D.1090709@rtr.ca> References: <4633AB75.7070107@rtr.ca> <4633B0A6.6090705@garzik.org> <20070428222502.26fc9bbc@the-village.bc.nu> <4633BEE7.8020005@garzik.org> <4633BF6D.40902@rtr.ca> <46340E63.5070209@gmail.com> <4634163D.1040408@gmail.com> <463487F0.4040701@rtr.ca> <46349695.7080706@rtr.ca> <46349A03.9090300@rtr.ca> <4634CAEC.4010700@gmail.com> <4634CC18.4080208@rtr.ca> <4634E8B3.4050301@rtr.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from rtr.ca ([64.26.128.89]:1423 "EHLO mail.rtr.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754458AbXD2TIA (ORCPT ); Sun, 29 Apr 2007 15:08:00 -0400 In-Reply-To: <4634E8B3.4050301@rtr.ca> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Tejun Heo Cc: Jeff Garzik , Alan Cox , Alan Cox , IDE/ATA development list Mark Lord wrote: > > ###### Test stuck DRQ on VIA-sata (disk): > > ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen > ata1.00: cmd ec/00:00:00:00:00/00:00:00:00:00/00 tag 0 cdb 0x0 data 0 > res 58/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x2 (HSM violation) Why do we not always put a '\n' in front of that last line above ?? Sometimes it seems to have it, and lots of times it does not have a '\n'. Weird. > ###### Test stuck DRQ on VIA-pata (ATAPI DVD/RW): > ###### Notice how the first "ata4.00: cmd ..." line is *missing*: > > res 58/00:02:00:00:02/00:00:00:00:00/40 Emask 0x2 (HSM violation) > ata4: soft resetting port > ata4.00: configured for UDMA/66 > ata4: EH complete And in this case, the first line of diagnostics (the "cmd" line) is always missing. Why? -ml