linux-kernel - Re: [PATCH] Make appletouch shut up when it has nothing to say

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Message-Id: <1179101995.25125.5.camel@localhost>
Date:	Mon, 14 May 2007 02:19:55 +0200
From:	Soeren Sonnenburg <kernel@....de>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	Pete Zaitcev <zaitcev@...hat.com>,
	linux-input@...ey.karlin.mff.cuni.cz, nicolas@...chat.ch,
	linux-usb-devel@...ts.sourceforge.net,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Make appletouch shut up when it has nothing to say

On Sun, 2007-05-13 at 20:57 +0100, Matthew Garrett wrote:
> Ok, I've tidied this up a little. I've separated the actual mode init 
> code into a separate function in order to avoid code duplication, and no 
> longer creating a new workqueue. The only other change is something that 
> I /think/ is actually a bug in the driver to begin with, but I'd like 
> some more feedback on that first - the first packet sent after the mode 
> change has 0x20 in the final byte. This seems to be interpreted as a 
> left mouse button press. As a result, moving the touchpad sends a false 
> press after every reinitialisation, or (approximately) every time the 
> pointer is moved. As far as I can tell this also happens with the 
> existing code, but is probably not noticable there because it won't 
> appear again after the first touch on the pad. Just skipping that case 
> seems to work fine.

This patch indeed fixes the problem and I have yet to observe problems
with it... However I don't know whether a re-init is the intended way of
dealing with it...

Soeren
-- 
Sometimes, there's a moment as you're waking, when you become aware of
the real world around you, but you're still dreaming.
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