From mboxrd@z Thu Jan 1 00:00:00 1970 From: Theodore Tso Subject: Re: [PATCH] ata: ahci: power off unused ports Date: Mon, 26 May 2008 23:08:54 -0400 Message-ID: <20080527030854.GC7515@mit.edu> References: <20080508161008.59361de5@appleyard> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from www.church-of-our-saviour.org ([69.25.196.31]:35456 "EHLO thunker.thunk.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756178AbYE0Kf0 (ORCPT ); Tue, 27 May 2008 06:35:26 -0400 Content-Disposition: inline In-Reply-To: <20080508161008.59361de5@appleyard> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Kristen Carlson Accardi Cc: jeff@garzik.org, linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org On Thu, May 08, 2008 at 04:10:08PM -0700, Kristen Carlson Accardi wrote: > power off unused ports > > If the port isn't either a drive bay or an external SATA port, do not > keep the phy powered on if the port is unoccupied. This saves .75 watts > on most laptops. A module parameter can be used to override this > behavior and allow the phy's to be powered up regardless of whether it > has externally accessible SATA ports. > > Signed-off-by: Kristen Carlson Accardi Hi, I'm wondering what's the status of this patch? if this has hit a subsystem tree yet? 0.75 watts power savings sounds really cool, but it doesn't seem to be in Linus's mainline yet. Has it hit a subsystem tree yet, or is there some issue that still needs to be resolved before it can go it? Thanks, regards, - Ted