From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933270Ab2AFSqC (ORCPT ); Fri, 6 Jan 2012 13:46:02 -0500 Received: from smtprelay-b21.telenor.se ([195.54.99.212]:57394 "EHLO smtprelay-b21.telenor.se" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933241Ab2AFSp7 (ORCPT ); Fri, 6 Jan 2012 13:45:59 -0500 X-SENDER-IP: [85.230.170.239] X-LISTENER: [smtp.bredband.net] X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Aj9fAM5AB09V5qrvPGdsb2JhbABDiVaiahkBAQEBNzKBcgEBBAE6HCMFCwgDRhQlChqIDQK2NBOLG2MEjTKHVIVfjFg X-IronPort-AV: E=Sophos;i="4.71,469,1320620400"; d="scan'208";a="1787861077" From: "Henrik Rydberg" Date: Fri, 6 Jan 2012 19:45:53 +0100 To: Benjamin Tissoires Cc: Dmitry Torokhov , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Chase Douglas Subject: Re: [PATCH v2] Input: evdev - Add EVIOC mechanism to extract the MT slot state Message-ID: <20120106184553.GA2795@polaris.bitmath.org> References: <1325863019-2242-1-git-send-email-rydberg@euromail.se> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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 > However, back in January 2011, Dmitry raised the problem that this > code was not thread safe. I had forgotten about that respin, thanks for the reminder. > What happens if 2 applications ask for > different slots values (let say X.org and utouch-frame)? As already pointed out, nothing bad. [...] > Asking for the current active slot (of the device) is allowed and > should be done by every application that starts to talk to evdev. Right you are. The hunk can be removed at the cost of loss of symmetry, but then it starts to look really ugly. ;-) Cheers, Henrik