From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: Problems with Elantech touchpad in 3.18-rc2 Date: Fri, 31 Oct 2014 18:30:40 +0100 Message-ID: <20141031173040.GA24184@amd> References: <545271E1.30306@gmail.com> <20141030180331.GF36444@dtor-ws> <20141030192506.GH36444@dtor-ws> <20141031162436.GA36996@dtor-ws> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:34991 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753693AbaJaRan (ORCPT ); Fri, 31 Oct 2014 13:30:43 -0400 Content-Disposition: inline In-Reply-To: <20141031162436.GA36996@dtor-ws> Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Dmitry Torokhov Cc: Linus Torvalds , Roel Aaij , "linux-input@vger.kernel.org" , Jiri Kosina , Hans de Goede On Fri 2014-10-31 09:24:36, Dmitry Torokhov wrote: > On Thu, Oct 30, 2014 at 12:25:06PM -0700, Dmitry Torokhov wrote: > > On Thu, Oct 30, 2014 at 12:06:03PM -0700, Linus Torvalds wrote: > > > On Thu, Oct 30, 2014 at 11:03 AM, Dmitry Torokhov > > > wrote: > > > > > > > > Linus, any guidance here? Can we live with such regression? > > > > > > No. If people are already finding machines with problems, that means > > > that there will be a lot of them once distributions move to that > > > kernel. > > > > My only argument here is that failure is much less severe than with MUX > > case: when in legacy mode the worst that is happening is that advanced > > features (multi-touch, two-finger scroilling, etc) do not work so the > > experience is similar to Windows box with no venrod drivers installed. > > Whereas when active MUX does not work but we are tying to use it your > > device is completely hosed. > > So I slept on it and I decided that we should indeed revert the patch, > since it causes more grief to people with good hardware than I > expected. We should not punish owners of good hardware because some > vendors can't write their firmware. You can still add "for anything manufactured in 2015+, assume it does not need MUX" and add a whitelist entry for any machine with external ps/2 ports that still needs it... I guess there would be very little of them made in 2015+. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html