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Subject: Re: [PATCH v2] Add suspend/resume for HPET
From: Thomas Gleixner <tglx@linutronix.de>
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To: Linus Torvalds <torvalds@linux-foundation.org>
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Date: Sat, 31 Mar 2007 18:33:20 +0200
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On Sat, 2007-03-31 at 09:09 -0700, Linus Torvalds wrote:
> 
> On Sat, 31 Mar 2007, Thomas Gleixner wrote:
> > 
> > While I agree in principle with the patch, I'm a bit uncomfortable. The
> > sys device suspend / resume ordering is not guaranteed and relies on the
> > registering order.
> 
> Well, this is why we probably should try to get away from the "system 
> device" issue, exactly because system devices are totally outside the 
> normal ordering and only have a random linear order.
> 
> If the clocksources were actually in the device tree, you'd get all the 
> normal guarantees about hierarchical ordering..

Right, but clock - sources/events need to be extremly late suspended and
early resumed. How can we ensure this ?

	tglx