From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robert Hancock Subject: Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23 Date: Sun, 09 Dec 2007 21:20:09 -0600 Message-ID: <475CB069.3050001@shaw.ca> References: <475AE150.9050306@shaw.ca> <20071209213642.GA27096@rhlx01.hs-esslingen.de> <20071210000429.GA3916@rhlx01.hs-esslingen.de> <20071210004959.GA23280@rhlx01.hs-esslingen.de> <475C9643.2000202@shaw.ca> <475CA388.9050805@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from idcmail-mo1so.shaw.ca ([24.71.223.10]:63005 "EHLO pd3mo2so.prod.shaw.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751442AbXLJDUM (ORCPT ); Sun, 9 Dec 2007 22:20:12 -0500 In-reply-to: <475CA388.9050805@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Tejun Heo Cc: Andreas Mohr , Matthew Garrett , Andrew Morton , "Rafael J. Wysocki" , LKML , Linus Torvalds , Ingo Molnar , linux-ide@vger.kernel.org, Len Brown , linux-acpi@vger.kernel.org Tejun Heo wrote: > Robert Hancock wrote: >> And you're quite right in your comment that we are often too quick to >> blacklist hardware instead of looking into why it really is failing. >> ACPI is one of those areas where we often just need to figure out how to >> be bug-to-bug compatibile with what Windows is doing.. > > In the spirit of not blacklisting without looking deep into ACPI code, > can somebody familiar with ASL take a look at comment 11 of bug 9320? > > http://bugzilla.kernel.org/show_bug.cgi?id=9320#c11 > > This is libata calling _GTM to find out how the BIOS configured the > device to determine cable type. > > Thanks. I suspect it's somewhat similar (though perhaps a different cause), the code is trying to lookup a value (presumably register contents) in a table using Match, gets a value that's not in the table (which makes Match return the ONES value FFFFFFFF meaning not found) and so the lookup of the corresponding output value with that index fails. We'd need the full ASL dump to know exactly what's going on there. -- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/