From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754588AbbCXUAR (ORCPT ); Tue, 24 Mar 2015 16:00:17 -0400 Received: from cavan.codon.org.uk ([93.93.128.6]:40549 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753239AbbCXUAM (ORCPT ); Tue, 24 Mar 2015 16:00:12 -0400 Date: Tue, 24 Mar 2015 20:00:05 +0000 From: Matthew Garrett To: Mario Limonciello Cc: Matt Fleming , Jason Ekstrand , LKML , Bard Liao , Liam Girdwood , "linux-acpi@vger.kernel.org" , "lenb@kernel.org" , "Rafael J. Wysocki" Subject: Re: [PATCH] ACPI: Adjust the return value of _REV on x86 Message-ID: <20150324200005.GA17499@srcf.ucam.org> References: <1426150247-18309-1-git-send-email-matthew.garrett@nebula.com> <1426363131-14530-1-git-send-email-jason.ekstrand@intel.com> <20150323120331.GA3007@codeblueprint.co.uk> <5510FB37.6030808@dell.com> <20150324152412.GA4706@codeblueprint.co.uk> <55119D4A.5050809@dell.com> <20150324180156.GA14658@srcf.ucam.org> <5511C0B4.1000304@dell.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5511C0B4.1000304@dell.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@cavan.codon.org.uk X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Mar 24, 2015 at 02:53:24PM -0500, Mario Limonciello wrote: > On 03/24/2015 01:01 PM, Matthew Garrett wrote: > >Will it? You haven't shipped the firmware that changes this behaviour > >yet. > > > This was posted a few days ago. BIOS A02, it resolves the broken behavior introduced in A01 and Linux. > > It can be flashed in the BIOS F12 boot menu, no Windows or DOS necessary. > > http://www.dell.com/support/home/us/en/04/Drivers/DriversDetails?driverId=F2PRR&fileId=3442501672&osCode=WB64A&productCode=xps-13-9343-laptop&languageCode=EN&categoryId=BI > > Anything bought from now forward will have that BIOS version (or something newer). Sigh. Then yeah, backporting it to stable is probably out - which means you've made it impossible to fix any other systems that have broken _REV behaviour and which would work fine with stable kernels otherwise. -- Matthew Garrett | mjg59@srcf.ucam.org