netdev - Re: [PATCH] e1000: the power down when running ifdown command

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Date:	Sat, 31 Oct 2009 10:58:38 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Naohiro Ooiwa <nooiwa@...aclelinux.com>
Cc:	jeffrey.t.kirsher@...el.com, jesse.brandeburg@...el.com,
	peter.p.waskiewicz.jr@...el.com, john.ronciak@...el.com,
	davem@...emloft.net, Andrew Morton <akpm@...ux-foundation.org>,
	netdev@...r.kernel.org, svaidy@...ux.vnet.ibm.com,
	e1000-devel@...ts.sourceforge.net
Subject: Re: [PATCH] e1000: the power down when running ifdown command

On Sat, 31 Oct 2009 18:39:52 +0900
Naohiro Ooiwa <nooiwa@...aclelinux.com> wrote:

> Hi All
> 
> I resend my patch.
> Sorry, my previous mail lacked an explanation.
> 
> 
> The e1000 driver doesn't let the power down when running ifdown command.
> So, I set to the D3hot state of a PCI device at the end of e1000_close().
> 
> With this modification, e1000 driver reduces power by ifdown.
> It's about 6 watts when I measured a total power of one server machine
> in my environment.
> 
> I tested this patch. The result is good enough to me.
> 
> Could you please check my patch ?
> If I should have other considerations, please tell me.
> 


Does this work with Wake On Lan? 
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