From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161022AbWBTQwF (ORCPT ); Mon, 20 Feb 2006 11:52:05 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161029AbWBTQwF (ORCPT ); Mon, 20 Feb 2006 11:52:05 -0500 Received: from dspnet.fr.eu.org ([213.186.44.138]:57868 "EHLO dspnet.fr.eu.org") by vger.kernel.org with ESMTP id S1161028AbWBTQwE (ORCPT ); Mon, 20 Feb 2006 11:52:04 -0500 Date: Mon, 20 Feb 2006 17:51:53 +0100 From: Olivier Galibert To: linux-kernel@vger.kernel.org Subject: Re: Flames over -- Re: Which is simpler? Message-ID: <20060220165153.GA33155@dspnet.fr.eu.org> Mail-Followup-To: Olivier Galibert , linux-kernel@vger.kernel.org References: <200602131116.41964.david-b@pacbell.net> <200602181251.09865.david-b@pacbell.net> <43F80ACC.20704@cfl.rr.com> <200602192150.05567.david-b@pacbell.net> <43F9E95A.6080103@cfl.rr.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <43F9E95A.6080103@cfl.rr.com> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 20, 2006 at 11:07:54AM -0500, Phillip Susi wrote: > Again, the hardware is perfectly free to power off the usb bus during > suspend to ram. Most systems choose not to because they allow wake from > usb, but not all do. USB has this additional problem that devices lose their addresses when the power is removed (it's very agressively hotplug). So you can have the devices moving around under your feet between poweroff and poweron just because the devices happened to have enumerated in a different order at boot time. OG.