From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oliver Neukum Subject: Re: [RESEND] [PATCH] Input: add appleir USB driver Date: Tue, 5 Oct 2010 18:07:36 +0200 Message-ID: <201010051807.36551.oliver@neukum.org> References: <1285844276.26405.26.camel@cookie.hadess.net> <201010050818.35118.oliver@neukum.org> <20101005155552.GB19730@core.coreip.homeip.net> Mime-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from smtp-out003.kontent.com ([81.88.40.217]:40817 "EHLO smtp-out003.kontent.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755068Ab0JEQGi (ORCPT ); Tue, 5 Oct 2010 12:06:38 -0400 In-Reply-To: <20101005155552.GB19730@core.coreip.homeip.net> Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Dmitry Torokhov Cc: Bastien Nocera , linux-input , Jiri Kosina , linux-kernel Am Dienstag, 5. Oktober 2010, 17:55:52 schrieb Dmitry Torokhov: > > Yes, but based on sane timing. From the time stamps user space > > would conclude that the key had been pressed at an unknown time > > before open and released at the time the event indicates. Possibly > > it would compute that the key had been held for at least hours. > > > > I do not understand. If a client never seen the "press" event and only > saw "release" event it can't make any assumptions about timing. Press > could be a millisecond ago or an hour ago, it just does not know. And > such scenario can easily happen if the client is second to open the > device. As soon as you open a device you see key presses. If you see a release without a press, the press must have happened before you opened. So if you know when you opened and when a key is released, you'll have a lower limit on how long the key must have been held down. Regards Oliver