linux-kernel - appletouch quirk doesn't run at resume

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Message-ID: <20070318004240.GO752@stusta.de>
Date:	Sun, 18 Mar 2007 01:42:40 +0100
From:	Adrian Bunk <bunk@...sta.de>
To:	Thomas Meyer <thomas@...3r.de>
Cc:	tglx@...utronix.de, "Rafael J. Wysocki" <rjw@...k.pl>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Soeren Sonnenburg <kernel@....de>,
	Sergey Vlasov <vsu@...linux.ru>, Jiri Kosina <jkosina@...e.cz>,
	linux-input@...ey.karlin.mff.cuni.cz
Subject: appletouch quirk doesn't run at resume

On Sat, Mar 17, 2007 at 11:07:38AM +0100, Thomas Meyer wrote:
> Thomas Gleixner schrieb:
> > I finally found a dual core box, which survives suspend/resume without
> > crashing in the middle of nowhere. Sigh, I never figured out from the
> > code and the bug reports what's going on.
> >
> > The observed hangs are caused by a stale state transition of the clock
> > event devices, which keeps the RCU synchronization away from completion,
> > when the non boot CPU is brought back up.
> >
> > The suspend/resume in oneshot mode needs the similar care as the
> > periodic mode during suspend to RAM. My assumption that the state
> > transitions during the different shutdown/bringups of s2disk would go
> > through the periodic boot phase and then switch over to highres resp.
> > nohz mode were simply wrong.
> >
> > Add the appropriate suspend / resume handling for the non periodic
> > modes.
> >
> > Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> >   
> 
> Excellent work. Now suspend to disk is working again. But:
> 
> 1.) The quirk added in commit a417a21e10831bca695b4ba9c74f4ddf5a95ac06
> for the appletouch driver doesn't seem to work after resume.
>...

Not a regression, but still a bug.
Appropriate people added to the Cc.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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