From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759018Ab2AFUCt (ORCPT ); Fri, 6 Jan 2012 15:02:49 -0500 Received: from mail-iy0-f174.google.com ([209.85.210.174]:36318 "EHLO mail-iy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756920Ab2AFUCr (ORCPT ); Fri, 6 Jan 2012 15:02:47 -0500 Date: Fri, 6 Jan 2012 12:02:40 -0800 From: Dmitry Torokhov To: Henrik Rydberg Cc: Chase Douglas , Benjamin Tissoires , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] Input: evdev - Add EVIOC mechanism to extract the MT slot state Message-ID: <20120106200239.GB23619@core.coreip.homeip.net> References: <1325863019-2242-1-git-send-email-rydberg@euromail.se> <20120106181845.GA22653@core.coreip.homeip.net> <20120106185544.GB2795@polaris.bitmath.org> <20120106191835.GA2998@polaris.bitmath.org> <4F074CAE.7010205@canonical.com> <20120106194815.GA3116@polaris.bitmath.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120106194815.GA3116@polaris.bitmath.org> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 06, 2012 at 08:48:15PM +0100, Henrik Rydberg wrote: > > > Ok, maybe not to so easy after all, which probably answers my own > > > question. Looks like a EVIOCGMTSLOT, taking both slot and event code > > > as argument, would be the cleaner route to take. Another ioctl, how do we > > > feel about that? > > > > What's the problem with userspace locking? > > The idea was to get by without it. > > Regarding ioctls, it does not seem realizable due to ioctl number > exhaustion. I am prettu sure we cabn spare 1 ioctl number. We just need to pass slot number not as part of ioctl number but in data instead. Like EVIOCGKEYCODE works. -- Dmitry