linux-kernel - Re: [RFD] Automatic suspend

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Message-Id: <1234754621.26036.120.camel@pasglop>
Date:	Mon, 16 Feb 2009 14:23:41 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Arve Hjønnevåg <arve@...roid.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Pavel Machek <pavel@....cz>,
	Nigel Cunningham <nigel@...el.suspend2.net>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	mark gross <mgross@...ux.intel.com>,
	"Woodruff, Richard" <r-woodruff2@...com>,
	Uli Luckas <u.luckas@...d.de>,
	Igor Stoppa <igor.stoppa@...ia.com>,
	Brian Swetland <swetland@...gle.com>,
	Len Brown <lenb@...nel.org>
Subject: Re: [RFD] Automatic suspend

On Sun, 2009-02-15 at 18:20 -0800, Arjan van de Ven wrote:
> what this needs is a separation between "interface down, all off" and
> "interface down enough so that link detection works".
> Some NICs can go all the way down and still do link detection, others
> cannot. This is obviously something the driver will know, nothing else
> in the system should know.

Sure, my point was just that the driver cannot make the decision to go
all-off (and thus not detect link) without some kind of user setting
allowing it to do so.

Cheers,
Ben.


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