linux-kernel - Re: Changes to sysfs PM layer break userspace

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Date:	Tue, 19 Dec 2006 21:03:21 +0100
From:	Arjan van de Ven <arjan@...radead.org>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	linux-kernel@...r.kernel.org, david-b@...bell.net, gregkh@...e.de
Subject: Re: Changes to sysfs PM layer break userspace

On Tue, 2006-12-19 at 19:44 +0000, Matthew Garrett wrote:
> On Tue, Dec 19, 2006 at 08:34:48PM +0100, Arjan van de Ven wrote:
> 
> > which userspace is using this btw?
> 
> Ubuntu uses it to disable wireless hardware under certain circumstances. 
> I believe that Suse's powernowd uses it to power down wired ethernet 
> hardware when it's not in use.

humm shouldn't the driver do this when the interface is brought down?
sounds like you're playing with fire to do this behind the drivers'
back....

-- 
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