From 1d958c83c8d77ad4977ae963017e87cec8cca9b5 Mon Sep 17 00:00:00 2001
From: Henrik Rydberg <rydberg@euromail.se>
Date: Tue, 21 Sep 2010 23:22:39 +0200
Subject: [PATCH] HID: 3m: Correct touchscreen emulation
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The current code sometimes misses to report the last BTN_TOUCH event
when multiple fingers are lifted simultaneously.  With the
introduction of MT slots, the tracking id is available to determine
the oldest active contact. Use this information to simplify and
correct the touchscreen emulation logic.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Acked-by: Stéphane Chatty <chatty@enac.fr>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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