linux-kernel - Re: zaurus suspend saga: 2.6.32-rc3

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Message-ID: <20091012071424.GE1765@elf.ucw.cz>
Date:	Mon, 12 Oct 2009 09:14:24 +0200
From:	Pavel Machek <pavel@....cz>
To:	Robert Jarzmik <robert.jarzmik@...e.fr>
Cc:	rpurdie@...ys.net, lenz@...wisc.edu,
	kernel list <linux-kernel@...r.kernel.org>,
	Dirk@...er-Online.de, arminlitzel@....de,
	Cyril Hrubis <metan@....cz>, thommycheck@...il.com,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	dbaryshkov@...il.com, omegamoon@...il.com, eric.y.miao@...il.com,
	utx@...guin.cz
Subject: Re: zaurus suspend saga: 2.6.32-rc3

On Sun 2009-10-11 17:59:45, Robert Jarzmik wrote:
> Pavel Machek <pavel@....cz> writes:
> 
> > Hi!
> >
> > I'm using patch similar to this for debugging:
> >
> > ...and good news is that it blinks after pressing of power button.
> >
> > ...core > pm_test also works.
> >
> > I also verified that end of pxa_pm_enter() is reached (with similar
> > blinking patch). End of corgi_pxa_pm_enter() seems to be reached, too.
> >
> > Any ideas what to try next?
> 
> For the Mitac MIO A701 board, with a similar problem, I had :
>  - removed almost all drivers (except screen and USB for control)
>  - realized that the culprit was amongst drivers (which resumed in a loop in
>  that time, should be the same now)

Seems like it is not that simple here;

suspend_enter():

	if (!error) {
		if (!suspend_test(TEST_CORE))
			error = suspend_ops->enter(state);
		sysdev_resume();
	}

[it reaches this point]
	arch_suspend_enable_irqs();
[but not this one]
	BUG_ON(irqs_disabled());

 Enable_cpus:
	enable_nonboot_cpus();

Do I have screaming irq or something?
									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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