Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758389AbZLGW0o (ORCPT ); Mon, 7 Dec 2009 17:26:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758173AbZLGW0m (ORCPT ); Mon, 7 Dec 2009 17:26:42 -0500 Received: from smtp1.linux-foundation.org ([140.211.169.13]:47447 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757744AbZLGW0m (ORCPT ); Mon, 7 Dec 2009 17:26:42 -0500 Date: Mon, 7 Dec 2009 14:26:43 -0800 (PST) From: Linus Torvalds X-X-Sender: torvalds@localhost.localdomain To: Alan Stern cc: Zhang Rui , "Rafael J. Wysocki" , LKML , ACPI Devel Maling List , pm list Subject: Re: [GIT PULL] PM updates for 2.6.33 In-Reply-To: Message-ID: References: User-Agent: Alpine 2.00 (LFD 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 660 Lines: 18 On Mon, 7 Dec 2009, Alan Stern wrote: > > There's no need to suspend the individual devices when the whole system > is going down. They will automatically suspend when the controller > stops sending out SOF packets, which occurs when the root hub is > suspended. The USB spec describes this, grandiosely, as a "global > suspend". Ahh, but the sync vs async would then still matter on resume. No? Linus -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/