linux-kernel - Re: [Bug #13371] s2disk hangs with kernel 2.6.29 and later, SATA, Gigabyte EG45M-DS2H

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Date:	Tue, 26 May 2009 10:36:21 -0700
From:	"Kok, Auke" <auke-jan.h.kok@...el.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	Richard Atterer <richard@...9.atterer.net>,
	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Thadeu Lima de Souza Cascardo <cascardo@...oscopio.com>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>
Subject: Re: [Bug #13371] s2disk hangs with kernel 2.6.29 and later, SATA,
 Gigabyte EG45M-DS2H - culprit found

Rafael J. Wysocki wrote:
> On Tuesday 26 May 2009, Richard Atterer wrote:
>> Hello,
>>
>> "Jerry" contacted me off-list with information about the root of the 
>> problem - many thanks indeed!!!
>>
>> It turns out that the e100 driver is responsible. (The motherboard actually 
>> has a r8169 chip, but I added an old Intel PCI ethernet card I own.)
>>
>> By rmmoding e100 before s2disk, the problem goes away. Jerry mentions that 
>> he once saw a message about e100 failing to load its microcode - I never 
>> saw such a message.
>>
>> The most recent e100 commit ac7c992 by Thadeu Lima de Souza Cascardo (Apr 
>> 28) made some changes to the behaviour in the case of shutdown vs. suspend, 
>> maybe the problem is there? (But note that during bisecting, I tested 
>> kernels older than that commit, and not all of them worked.) Before that, 
>> f902283 (Mar 3 2008) mentions suspend in the log message.
> 
> OK, thanks for the information.  I'll have a look at the e100 suspend-resume
> code, but I really don't think commit ac7c992 is at fault here.

adding Jeff Kirsher to the Cc, who currently maintains the e100 driver.

Auke
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