From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752009AbZHOV16 (ORCPT ); Sat, 15 Aug 2009 17:27:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751121AbZHOV16 (ORCPT ); Sat, 15 Aug 2009 17:27:58 -0400 Received: from cavan.codon.org.uk ([93.93.128.6]:55843 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751056AbZHOV15 (ORCPT ); Sat, 15 Aug 2009 17:27:57 -0400 Date: Sat, 15 Aug 2009 22:27:56 +0100 From: Matthew Garrett To: "Rafael J. Wysocki" Cc: Alan Stern , linux-usb@vger.kernel.org, linux-pci@vger.kernel.org, Greg KH , LKML , Linux-pm mailing list Subject: Re: [linux-pm] [RFC] PCI: Runtime power management Message-ID: <20090815212756.GA31784@srcf.ucam.org> References: <200908152254.23227.rjw@sisk.pl> <20090815205817.GA30254@srcf.ucam.org> <200908152321.53283.rjw@sisk.pl> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200908152321.53283.rjw@sisk.pl> User-Agent: Mutt/1.5.18 (2008-05-17) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@cavan.codon.org.uk X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Aug 15, 2009 at 11:21:53PM +0200, Rafael J. Wysocki wrote: > I can even imagine a scenario where this setting might be useful, like when > we don't want a network adapter to be woken up from the outside. I think in that case we'd probably just want the interface to be downed? Some of this is going to require device-specific policy, I think - for the network case we probably want something in between IF_RUNNING and IF_DOWN (IF_CARRIER, perhaps) that indicates that we want the PHY to be powered. Pushing this out to sysfs would mean we'd have a consistent interface but varying semantics, and I'm not convinced that's an especially helpful interface. -- Matthew Garrett | mjg59@srcf.ucam.org