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touchpad: disable cursor jump detection for Wacom tablets

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We haven't seen jumps on Wacom tablets yet and they cause error messages in
most of the tests. litest uses a scaling approach for most events, so a finger
move that moves from 30% to 80% of the touchpad with can easily trigger a jump
on a Wacom tablet due to its physical size.

Rather than having to fix up all tests for the larger size (and potentially
cover some other bugs) simply disable this test for Wacom tablets.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Peter Hutterer 2016-05-18 12:19:30 +10:00
parent 2f5231cc88
commit 58f4058cf7
1 changed files with 6 additions and 0 deletions
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6
src/evdev-mt-touchpad.c
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@ -913,6 +913,12 @@ tp_detect_jumps(const struct tp_dispatch *tp, struct tp_touch *t)
double dx, dy;
const int JUMP_THRESHOLD_MM = 20;
/* We haven't seen pointer jumps on Wacom tablets yet, so exclude
* those.
*/
if (tp->device->model_flags & EVDEV_MODEL_WACOM_TOUCHPAD)
return false;
if (t->history.count == 0)
return false;