From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933788Ab2LGMQh (ORCPT ); Fri, 7 Dec 2012 07:16:37 -0500 Received: from antcom.de ([188.40.178.216]:51902 "EHLO chuck.antcom.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933774Ab2LGMQf (ORCPT ); Fri, 7 Dec 2012 07:16:35 -0500 Message-ID: <50C1DE21.8050709@antcom.de> Date: Fri, 07 Dec 2012 13:16:33 +0100 From: Roland Stigge Organization: ANTCOM IT Research & Development User-Agent: Mozilla/5.0 (X11; Linux i686; rv:10.0.11) Gecko/20121123 Icedove/10.0.11 MIME-Version: 1.0 To: Alan Cox CC: gregkh@linuxfoundation.org, grant.likely@secretlab.ca, linus.walleij@linaro.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, w.sang@pengutronix.de, jbe@pengutronix.de, plagnioj@jcrosoft.com, highguy@gmail.com, broonie@opensource.wolfsonmicro.com, daniel-gl@gmx.net, rmallon@gmail.com, tru@work-microwave.de, sr@denx.de, wg@grandegger.com Subject: Re: [PATCH 0/6 v10] gpio: Add block GPIO References: <1354830456-17590-1-git-send-email-stigge@antcom.de> <20121207103643.34ca6dc5@pyramind.ukuu.org.uk> <50C1DBD4.1040007@antcom.de> In-Reply-To: <50C1DBD4.1040007@antcom.de> X-Enigmail-Version: 1.4 OpenPGP: url=subkeys.pgp.net Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/07/2012 01:06 PM, Roland Stigge wrote: > On 12/07/2012 11:36 AM, Alan Cox wrote: >>> * Device interface for userland access (alternative to sysfs) >> >> Currently we can set different permissions on different GPIO lines. Your >> driver change drives a truck through this facility. What I maybe misread in your concern: The dev interface is actually an "alternative to sysfs for block GPIO", not considered as a replacement for the current sysfs interface for _single_ GPIOs. The fate of the latter one can be discussed separately. Also, the sysfs interface for block GPIO can be left out of my patch series, if necessary. Roland