Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932338AbXAONpG (ORCPT ); Mon, 15 Jan 2007 08:45:06 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932317AbXAONpG (ORCPT ); Mon, 15 Jan 2007 08:45:06 -0500 Received: from srv5.dvmed.net ([207.36.208.214]:47500 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932338AbXAONpE (ORCPT ); Mon, 15 Jan 2007 08:45:04 -0500 Message-ID: <45AB8553.10301@garzik.org> Date: Mon, 15 Jan 2007 08:44:51 -0500 From: Jeff Garzik User-Agent: Thunderbird 1.5.0.9 (X11/20061219) MIME-Version: 1.0 To: Tejun Heo CC: Arjan van de Ven , Faik Uygur , Robert Hancock , linux-kernel Subject: Re: ahci_softreset prevents acpi_power_off References: <45A9860D.5080506@shaw.ca> <200701141959.40673.faik@pardus.org.tr> <1168797978.3123.997.camel@laptopd505.fenrus.org> <45AAFCC6.9000700@gmail.com> In-Reply-To: <45AAFCC6.9000700@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -4.3 (----) X-Spam-Report: SpamAssassin version 3.1.7 on srv5.dvmed.net summary: Content analysis details: (-4.3 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1053 Lines: 26 Tejun Heo wrote: > Arjan van de Ven wrote: >> I'd be interested in finding out how to best test this; if the bios is >> really broken I'd love to add a test to the Linux-ready Firmware >> Developer Kit for this, so that BIOS developers can make sure future >> bioses do not suffer from this bug... > > As reported, this is almost a butterfly effect. ->softreset method is > only used during initialization and error recovery of ATA devices which > has almost nothing to do with the rest of the system. This is almost > like 'changing my mixer input to line-in makes power off fail'. (it's > more related due to ATA ACPI stuff and maybe that's why this happens but > I'm trying to make a point here.) It's quite possible that the BIOS in question wants AHCI in some specific state at poweroff. Jeff - 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/