From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Henrik Rydberg" <rydberg@euromail.se>
Subject: Re: [PATCH v2] Input: evdev - Add EVIOC mechanism to extract the MT
 slot state
Date: Fri, 6 Jan 2012 20:48:15 +0100
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To: Chase Douglas <chase.douglas@canonical.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>, Benjamin Tissoires <benjamin.tissoires@gmail.com>, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org

> > Ok, maybe not to so easy after all, which probably answers my own
> > question. Looks like a EVIOCGMTSLOT, taking both slot and event code
> > as argument, would be the cleaner route to take. Another ioctl, how do we
> > feel about that?
> 
> What's the problem with userspace locking?

The idea was to get by without it.

Regarding ioctls, it does not seem realizable due to ioctl number
exhaustion. A sysfs interface for all EV_ABS and per-slot MT values
could be a more future-proof alternative.

Henrik