linux-kernel - Re: resume regression in 2.6.37

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Date:	Thu, 13 Jan 2011 17:28:27 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Sven Neumann <s.neumann@...mfeld.com>
cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Daniel Mack <daniel@...aq.de>
Subject: Re: resume regression in 2.6.37

On Thu, 13 Jan 2011, Sven Neumann wrote:
> Now I've tried to update the kernel to 2.6.37. After fixing the already
> reported NULL pointer dereference on bootup in pxa3xx_nand_probe(), the
> device seems to work fine until I suspend it and then try to wake it up
> from suspend. Suspend seems to work fine, no warnings whatsoever.
> However there is absolutely no sign of resume.
> 
> I've used git bisect to track this down to the following commit:
> 
> 
> commit 2f7e99bb9be6a2d8d7b808dc86037710cc8b7bf1
> Author: Thomas Gleixner <tglx@...utronix.de>
> Date:   Mon Sep 27 12:45:50 2010 +0000
> 
>     genirq: Provide compat handling for chip->set_wake()
>     
>     Wrap the old chip function set_wake() until the migration is
>     complete and the old chip functions are removed.
>     
>     Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
>     Cc: Peter Zijlstra <peterz@...radead.org>
>     LKML-Reference: <20100927121842.927527393@...utronix.de>
>     Reviewed-by: H. Peter Anvin <hpa@...or.com>
>     Reviewed-by: Ingo Molnar <mingo@...e.hu>
> 
> 
> Any idea on how to proceed from here? I don't think I can just revert
> this commit and expect things to work, right?

Well, I somehow doubt, that this is the real culprit. The patch does
not change anything of the set_wake() functionality. It's a functional
equivivalent wrapper, nothing else.

Can you revert it on top of 2.6.37 and verify that it helps ?

Thanks,

	tglx
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