linux-kernel - Re: clockevents: fix resume logic

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Date:	Tue, 11 Sep 2007 08:37:16 +0200
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	john stultz <johnstul@...ibm.com>, Ingo Molnar <mingo@...e.hu>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: clockevents: fix resume logic

On Mon, 2007-09-10 at 14:47 -0700, Andrew Morton wrote:
> > 
> >     clockevents: fix resume logic
> >     
> >     We need to make sure, that the clockevent devices are resumed, before
> >     the tick is resumed. The current resume logic does not guarantee this.
> >     
> >     Add CLOCK_EVT_MODE_RESUME and call the set mode functions of the clock
> >     event devices before resuming the tick / oneshot functionality.
> >     
> >     Fixup the existing users.
> >     
> >     Thanks to Nigel Cunningham for tracking down a long standing thinko,
> >     which affected the jinxed VAIO.
> >     
> 
> This patch broke the jinxed vaio.
> 
> Which is a bit odd, considering that I must have tested it at the time. 
> But I bisected it right down to this commit, and the below revert patch
> fixed it up.

I just looked up, that you confirmed earlier that the patch does _not_
break the VAIO. 

I think, that some other suspend/resume/ACPI or whatever change went in
before this patch got merged into Linus tree. Sigh. That's pretty hard
to find out.

	tglx


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