linux-kernel - Re: [RFC][PATCH 0/3] PM: Asynchronous suspend and resume

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Message-Id: <200908142112.38557.rjw@sisk.pl>
Date:	Fri, 14 Aug 2009 21:12:38 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	"linux-pm" <linux-pm@...ts.linux-foundation.org>,
	"linux-acpi" <linux-acpi@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Zhang Rui <rui.zhang@...el.com>, Len Brown <lenb@...nel.org>,
	Arjan van de Ven <arjan@...ux.intel.com>
Subject: Re: [RFC][PATCH 0/3] PM: Asynchronous suspend and resume

On Friday 14 August 2009, Alan Stern wrote:
> On Thu, 13 Aug 2009, Rafael J. Wysocki wrote:
> 
> > > No, I've only tested it with a few selected drivers.  I'm going to try the
> > > "async everyone" scenario, though.
> > 
> > On HP nx6325 booted with init=/bin/bash it doesn't pass the
> > 'echo devices > /sys/power/pm_test && echo mem > /sys/power/state' test.
> > 
> > The suspend part actually seems to work, but the resume part crashes
> > miserably.
> 
> Any details?  Can you tell where it crashes?

Unfortunately it ends up in a continuous flood of backtraces, so I can't
say much.

However, if I set async_suspend for all PCI devices, as well as for ACPI battery
and i8042, everything apparently works, even with real suspend-resume.

Thanks,
Rafael
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