Re: UNS: Re: [PATCH] PCI: do not delay when changing power states on Geode

[Andres Salomon <dilinger@queued.net>]

On Fri, 6 Jul 2007 11:05:18 +0100
Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:

> On Thu, 5 Jul 2007 22:13:51 -0400
> Andres Salomon <dilinger@queued.net> wrote:
> 
> > Geode hardware requires no delay when doing power transition for PCI;
> > the board doesn't even have a real PCI bus.  Thanks to Tom Sylla for
> > pointing this out.  We can save precious milliseconds when changing power
> > states to D3hot by getting rid of this delay.
> > 
> > We do this as a PCI quirk.
> 
> NAK
> 
> These systems may have other components on them which require the proper
> transition times and the CS5530 supports external real PCI devices.
> 
> Alan

You're right; I munged the description.  Turns out the patch is wrong
anyways, though (whether the delay is necessary or not turns out to be
firmware dependent).


-- 
Andres Salomon <dilinger@queued.net>
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