From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753896Ab1KXAMv (ORCPT ); Wed, 23 Nov 2011 19:12:51 -0500 Received: from ogre.sisk.pl ([217.79.144.158]:54997 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753469Ab1KXAMu (ORCPT ); Wed, 23 Nov 2011 19:12:50 -0500 From: "Rafael J. Wysocki" To: Patrik Kullman Subject: Re: EHCI powersave causes shutdown to freeze Date: Thu, 24 Nov 2011 01:15:38 +0100 User-Agent: KMail/1.13.6 (Linux/3.1.0-rc10+; KDE/4.6.0; x86_64; ; ) Cc: linux-kernel@vger.kernel.org References: In-Reply-To: MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201111240115.39048.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thursday, November 24, 2011, Patrik Kullman wrote: > Hi, > > After creating a powersave script based on PowerTOP Tunables, this > particular line prevented the system from being able to shutdown (Asus > Zenbook UX31E, kernels 3.0 - 3.1.2): > > ### Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced > Host Controller #1 > echo auto > /sys/bus/pci/devices/0000:00:1d.0/power/control > > > Kernel prints the "Power Down." message but machine doesn't power down. > > Is this a known bug? > Could this be fixed in the driver instead of: > > echo on > /sys/bus/pci/devices/0000:00:1d.0/power/control > > on system shutdown? This commit should address that issue: commit af8db1508f2c9f3b6e633e2d2d906c6557c617f9 Author: Peter Chen Date: Tue Nov 15 21:52:29 2011 +0100 PM / driver core: disable device's runtime PM during shutdown Thanks, Rafael