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eventcomm: ignore fake and broken MT devices

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An MT device without X/Y is not a touchpad. And neither are fake MT devices.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
(cherry picked from commit fc9f490a2c)
This commit is contained in:
Peter Hutterer
2015-03-24 15:41:39 +10:00
parent ef8daaf696
commit 15caf2b534
1 changed files with 9 additions and 0 deletions
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9
src/eventcomm.c
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@@ -320,6 +320,15 @@ event_query_is_touchpad(struct libevdev *evdev, BOOL test_grab)
libevdev_has_event_code(evdev, EV_ABS, BTN_TOOL_PEN)) /* Don't match wacom tablets */
goto unwind;
if (libevdev_has_event_code(evdev, EV_ABS, ABS_MT_SLOT)) {
if (libevdev_get_num_slots(evdev) == -1)
goto unwind; /* Ignore fake MT devices */
if (!libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_X) ||
!libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_Y))
goto unwind;
}
ret = TRUE;
unwind: