From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Torokhov Subject: Re: [PATCH v2] input: qt602240 - Add ATMEL QT602240 touchscreen driver Date: Mon, 28 Jun 2010 01:42:12 -0700 Message-ID: <20100628084212.GE25287@core.coreip.homeip.net> References: <1277430882-3685-1-git-send-email-jy0922.shim@samsung.com> <4C24B86E.1030407@euromail.se> <4C283048.1090601@samsung.com> <4C285124.1050201@euromail.se> <4C285AB1.7030301@samsung.com> <4C285E85.6080008@euromail.se> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-pw0-f46.google.com ([209.85.160.46]:34187 "EHLO mail-pw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753184Ab0F1ImS (ORCPT ); Mon, 28 Jun 2010 04:42:18 -0400 Received: by pwj8 with SMTP id 8so3292326pwj.19 for ; Mon, 28 Jun 2010 01:42:18 -0700 (PDT) Content-Disposition: inline In-Reply-To: <4C285E85.6080008@euromail.se> Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Henrik Rydberg Cc: Joonyoung Shim , linux-input@vger.kernel.org, kyungmin.park@samsung.com On Mon, Jun 28, 2010 at 10:34:13AM +0200, Henrik Rydberg wrote: > > It is a bit confusing I agree, but the document is correct. The empty > input_mt_sync() is used when there is no data to report, no lifted fingers, > nothing. Just imagine a device which gets polled periodically. If there is no new data to report why we need to call input_mt_sync() at all? You can send input_sync() but input core will filter it out... -- Dmitry