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Message-ID: <20101217213838.76db3710@stein>
Date:	Fri, 17 Dec 2010 21:38:38 +0100
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	"Linux-pm mailing list" <linux-pm@...ts.linux-foundation.org>,
	Maxim Levitsky <maximlevitsky@...il.com>
Subject: Re: [Regression] firewire_ohci causes system resume to fail

On Dec 17 Rafael J. Wysocki wrote:
> On Sunday, December 05, 2010, Stefan Richter wrote:
> > On Dec 05 Stefan Richter wrote:
> > > On Dec 05 Rafael J. Wysocki wrote:
> > > > There is a regression I can reproduce 100% of the time on a AMD-based desktop
> > > > box that resume from hibernation (or suspend) fails because of the firewire_ohci
> > > > module.  The box just hangs when firewire_ohci resume runs, apparently, and it
> > > > is sufficient to do:
> > > > 
> > > > # echo devices > /sys/power/pm_test
> > > > # echo disk > /sys/power/state
> > > > 
> > > > to reproduce the issue.
> > > 
> > > Do you have anything attached to the FireWire bus?  What controller do
> > > you have?
> > 
> > I just now tested the above on an Intel Mac mini, running
> > unmodified 2.6.37-rc4 x86-32, without and with a camera on the FireWire
> > port, and could not reproduce the problem.  I also got an AMD based PC
> > here with an array of different FireWire controllers which I shall make
> > available to the same test...
> 
> I'm unable to reproduce the problem with 2.6.37-rc6, so presumably this was
> a temporary glitch with the particular kernel build.

Good.

I finally got around to test this on my AMD RS780 based PC with several
FireWire controllers in it.  It performs above PM test without any
apparent problem.
-- 
Stefan Richter
-=====-==-=- ==-- =---=
http://arcgraph.de/sr/
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