Input: elantech - fix semi-mt protocol for v3 HW

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commit 3c0213d17a upstream.

When the v3 hardware sees more than one finger, it uses the semi-mt
protocol to report the touches. However, it currently works when
num_fingers is 0, 1 or 2, but when it is 3 and above, it sends only 1
finger as if num_fingers was 1.

This confuses userspace which knows how to deal with extra fingers
when all the slots are used, but not when some are missing.

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=90101

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

...

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Benjamin Tissoires 2015-04-23 09:08:43 -07:00 • committed by Luis Henriques

parent 00b0a6a554

commit bf830fd4f3

1 changed files with 1 additions and 1 deletions

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drivers/input/mouse/elantech.c

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