From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261442AbVGGRwV (ORCPT ); Thu, 7 Jul 2005 13:52:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261321AbVGGRtm (ORCPT ); Thu, 7 Jul 2005 13:49:42 -0400 Received: from chiark.greenend.org.uk ([193.201.200.170]:60830 "EHLO chiark.greenend.org.uk") by vger.kernel.org with ESMTP id S261402AbVGGRt0 (ORCPT ); Thu, 7 Jul 2005 13:49:26 -0400 To: Jens Axboe Cc: "'Clemens Koller'" , "'Lenz Grimmer'" , "'Arjan van de Ven'" , "'Jesper Juhl'" , "'Dave Hansen'" , hdaps-devel@lists.sourceforge.net, "'LKML List'" Subject: Re: IBM HDAPS things are looking up (was: Re: [Hdaps-devel] Re: [ltp] IBM HDAPS Someone interested? (Accelerometer)) In-Reply-To: <20050707173412.GL24401@suse.de> References: <42CD600C.2000105@anagramm.de> <002401c58317$865ee6a0$600cc60a@amer.sykes.com> <002401c58317$865ee6a0$600cc60a@amer.sykes.com> <20050707173412.GL24401@suse.de> Date: Thu, 7 Jul 2005 18:49:07 +0100 Message-Id: From: Matthew Garrett Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Jens Axboe wrote: > What is needed is to flesh out what the kernel interface should looke > like. I suggested a sysfs file for suspending and resuming access to the > device, if people have other ideas they should voice them. That sounds quite reasonable. Does it need to do anything other than park the head and suspend the command queue for that device? (On an only slightly related note, for full ACPI support of PATA, we're supposed to use the _GTF interface. This returns a set of taskfile commands that are then supposed to be executed by the host. However, at the point where we want to do this, the IDE queues haven't been restarted. Is the best solution here just to add a trivial and stupid IDE driver for managing the disks when we don't want userspace doing anything with them?) -- Matthew Garrett | mjg59-chiark.mail.linux-rutgers.kernel@srcf.ucam.org