netdev - Re: [linux-pm] [RFC] Runtime power management on ipw2100

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Message-Id: <200701311148.20777.ak@suse.de>
Date:	Wed, 31 Jan 2007 11:48:20 +0100
From:	Andi Kleen <ak@...e.de>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	Amit Kucheria <amit.kucheria@...ia.com>,
	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 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.

-Andi
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