From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755436Ab3KTXlg (ORCPT ); Wed, 20 Nov 2013 18:41:36 -0500 Received: from cavan.codon.org.uk ([93.93.128.6]:50909 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755336Ab3KTXld (ORCPT ); Wed, 20 Nov 2013 18:41:33 -0500 Message-ID: <1384990859.20536.4.camel@x230> Subject: Re: [PATCH] video: backlight: Remove backlight sysfs uevent From: Matthew Garrett To: Henrique de Moraes Holschuh Cc: Jingoo Han , "'Kyungmin Park'" , "'Henrique de Moraes Holschuh'" , linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, kay@vrfy.org, "'Richard Purdie'" , ibm-acpi-devel@lists.sourceforge.net, platform-driver-x86@vger.kernel.org Date: Wed, 20 Nov 2013 18:40:59 -0500 In-Reply-To: <20131112005628.GA2914@khazad-dum.debian.net> References: <20131111235700.GA29987@july> <002901cedf3c$a7e77a00$f7b66e00$%han@samsung.com> <20131112005628.GA2914@khazad-dum.debian.net> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.10.2 (3.10.2-1.fc20) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-SA-Do-Not-Run: Yes X-SA-Exim-Connect-IP: 2001:470:1f07:1371:6267:20ff:fec3:2318 X-SA-Exim-Mail-From: mjg59@srcf.ucam.org 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 Mon, 2013-11-11 at 22:56 -0200, Henrique de Moraes Holschuh wrote: > On Tue, 12 Nov 2013, Jingoo Han wrote: > > 'thinkpad_acpi.c' uses the 'BACKLIGHT_UPDATE_SYSFS'. > > Henrique, can we remove it? > > Can't you fix this by rate-limiting, or otherwise adding an attribute that > backlight devices should set when they need to supress change events? It looks like this is just to force synchronisation to sysfs when using the /proc interface? In which case we should probably just kill the /proc interface. -- Matthew Garrett