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From: Oliver Neukum <oliver@neukum.org>
Organization: Novell
To: Arjan van de Ven <arjan@infradead.org>
Subject: Re: [RFD] Automatic suspend
Date: Tue, 17 Feb 2009 00:20:12 +0100
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Am Monday 16 February 2009 18:31:08 schrieb Arjan van de Ven:
> On Mon, 16 Feb 2009 17:48:06 +0100
> Oliver Neukum <oliver@neukum.org> wrote:
> 
> > > Userspace should just be the part that says "I'm interested in link
> > > notifications". The driver then just goes to the lowest power state
> > > for its device that still gives those notifications.
> > 
> > Should there be a channel through which drivers can tell user space
> > what the consequences in terms of reaching a sleep state are if a
> > service is requested?
> 
> Personally, I don't think so.
> Think about it: what would userspace do?
> Not ask for the functionality if it means no sleep state?
> Maybe it should just never ask for it then as a required functionality!

1. You may have a human being using the information to make the tradeoff.
2. User space may be able to select among several devices the one cheapest
to use

	Regards
		Oliver