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From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Stefan Richter <stefanr@s5r6.in-berlin.de>, Pavel Machek <pavel@ucw.cz>
Subject: Re: regression: fireware causes oops during system
Date: Sun, 16 Sep 2007 22:16:01 +0200
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Cc: Ben Collins <ben.collins@ubuntu.com>,
       kernel list <linux-kernel@vger.kernel.org>,
       linux1394-devel@lists.sourceforge.net, Ingo Molnar <mingo@elte.hu>
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On Sunday, 16 September 2007 21:58, Stefan Richter wrote:
> Rafael J. Wysocki wrote:
> >> Pavel Machek wrote:
> >>> commit 831441862956fffa17b9801db37e6ea1650b0f69
> >>> tree b0334921341f8f1734bdd3243de76d676329d21c
> >>> parent 787d2214c19bcc9b6ac48af0ce098277a801eded
> >>> author Rafael J. Wysocki <rjw@sisk.pl> Tue, 17 Jul 2007 04:03:35 -0700
> >>> committer Linus Torvalds <torvalds@woody.linux-foundation.org> Tue, 17
> >>> Jul 2007 10:23:02 -0700
> >>>
> >>>     Freezer: make kernel threads nonfreezable by default
> > 
> > Well, I don't think so.
> > 
> > nodemgr_host_thread() calls set_freezable() as it should.
> 
> This commit is certainly OK, as it should merely preserve status quo.
> Also note that Pavel wrote in his initial post that the problem became
> apparent way after -rc1.  Full quote:
> 
> | I noticed empty suspend stopped working around 2.6.23-rc4, and it is
> | still present in 2.6.23-rc6. To reproduce
> |
> | swapoff -a
> | echo disk > /sys/power/state
> | echo disk > /sys/power/state
> |
> | Unsetting
> |
> | CONFIG_IEEE1394=y
> |
> | solves the problem.

Yes.

I thought that there might be a later change that exposed a bug in it.

Hm.  Pavel, can you do

# echo test > /sys/power/disk
# echo disk > /sys/power/state

and see what happens?

Greetings,
Rafael