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Date:	Wed, 31 Jan 2007 13:53:20 +0200
From:	Amit Kucheria <amit.kucheria@...ia.com>
To:	ext Andi Kleen <ak@...e.de>
Cc:	Matthew Garrett <mjg59@...f.ucam.org>,
	ipw2100-devel@...ts.sourceforge.net, linux-pm@...ts.osdl.org,
	netdev@...r.kernel.org
Subject: Re: [linux-pm] [RFC] Runtime power management on	ipw2100

On Wed, 2007-01-31 at 11:48 +0100, ext Andi Kleen wrote:
> On Wednesday 31 January 2007 11:27, Matthew Garrett wrote:
> > On Wed, Jan 31, 2007 at 12:13:04PM +0100, Andi Kleen wrote:
> > > Matthew Garrett <mjg59@...f.ucam.org> writes:
> > > > 
> > > > PCI seems to require a delay of 10ms when sequencing from D3 to D0, 
> > > > which probably isn't acceptable latency for an "up" state.
> > > 
> > > It might be if the interface has been idle for some time
> > > (and the delay is not busy looping of course)
> > 
> > Hm. How would this interact with receiving packets?
> 
> The hardware will hopefully have support to wake itself up when that 
> happens.

Yes. Low power states without ability to respond to wakeup interrupts
would be broken behaviour generally.

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