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

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Message-Id: <200905260136.33724.rjw@sisk.pl>
Date:	Tue, 26 May 2009 01:36:32 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Richard Atterer <richard@...9.atterer.net>
Cc:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	linux-kernel@...r.kernel.org,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Thadeu Lima de Souza Cascardo <cascardo@...oscopio.com>,
	Auke Kok <auke-jan.h.kok@...el.com>
Subject: Re: [Bug #13371] s2disk hangs with kernel 2.6.29 and later, SATA, Gigabyte EG45M-DS2H - culprit found

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.

Best,
Rafael
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