From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kristen Carlson Accardi Subject: Re: [patch 1/2] allow user to power off unused ports via sysfs Date: Mon, 29 Sep 2008 16:49:13 -0700 Message-ID: <20080929164913.6489445c@appleyard> References: <1222639114.12062.10.camel@hannibal> Reply-To: kristen.c.accardi@intel.com Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from mga09.intel.com ([134.134.136.24]:12559 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751896AbYI2Xtt (ORCPT ); Mon, 29 Sep 2008 19:49:49 -0400 In-Reply-To: <1222639114.12062.10.camel@hannibal> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: "Jeffrey W. Baker" Cc: linux-ide@vger.kernel.org On Sun, 28 Sep 2008 14:58:34 -0700 "Jeffrey W. Baker" wrote: > > The problem is I didn't save any power this way :( ThinkPad X61t was > using minimum 7.6W on a one-minute average before power_off, and same > power after power_off. I'd been led to believe that disabling these > ports would have a substantial power saving effect. > > -jwb > Hi Jeffrey - the reason you are not seeing any power savings is that this patch isn't actually powering off the ports. I swear this used to work... but I confirmed today it is not doing what it is supposed to do. I'll send out a reworked patch as soon as I figure out what the problem is. Kristen