From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Garrett Subject: Re: [PATCH] toshiba_acpi: fingers off backlight if video.ko is serving this functionality Date: Thu, 13 Nov 2008 11:11:57 +0000 Message-ID: <20081113111157.GA30587@srcf.ucam.org> References: <200811081637.45099.arvidjaar@mail.ru> <200811121741.36296.trenn@suse.de> <20081113013259.GA24790@srcf.ucam.org> <200811130758.13420.arvidjaar@mail.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from cavan.codon.org.uk ([93.93.128.6]:58655 "EHLO vavatch.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752095AbYKMLMD (ORCPT ); Thu, 13 Nov 2008 06:12:03 -0500 Content-Disposition: inline In-Reply-To: <200811130758.13420.arvidjaar@mail.ru> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Andrey Borzenkov Cc: Thomas Renninger , Len Brown , linux-acpi@vger.kernel.org On Thu, Nov 13, 2008 at 07:58:09AM +0300, Andrey Borzenkov wrote: > - exposing two knobs for the *same* thing confuses user level tools; you never > know which one is used and they compete behind your back How do they compete? As I said, the implementations appear to be implemented on top of the same underlying functionality. The problem with providing both vendor and ACPI functionality comes when both use different mechanisms for changing the backlight and so can get out of sync with each other. Are there any machines supported by toshiba_acpi where this is the case? -- Matthew Garrett | mjg59@srcf.ucam.org