linux-kernel - Re: resume regression in 2.6.37

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Date:	Mon, 17 Jan 2011 11:36:20 +0100
From:	Sven Neumann <s.neumann@...mfeld.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Daniel Mack <daniel@...aq.de>, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: resume regression in 2.6.37

On Thu, 2011-01-13 at 18:33 +0100, Thomas Gleixner wrote:

> > Without the revert there is absolutely no sign of resume. With the
> > change reverted I can see that the PXA powers up again, there's an LED
> > showing that the USB controller has power again. Unfortunately there's
> > seems to be another problem and the resume doesn't complete. I've tried
> > to get console output by using no_console_suspend, but there's just
> > gibberish on the console after resume :(
> > 
> > Any idea on how to proceed from here? I could perhaps ask our hardware
> > engineer to try find out where exactly we are stuck in the resume. But
> > I'd like to avoid that if possible.
> 
> Can you stick a printk into the set_wake() function of that irq chip
> and print the irq and on arguments and the return value . Run that
> with both stock 2.6.37 and the patch reverted.

pxa3xx_set_wake(31, 1) returns 0

Same result with stock 2.6.37 and the patch reverted. Except that
without the patch reverted, the device doesn't power up again.


Sven


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