From fc9f490a2c87e6f87b0f483cd6bf5f526dddbb8d Mon Sep 17 00:00:00 2001 From: Peter Hutterer Date: Tue, 24 Mar 2015 15:41:39 +1000 Subject: eventcomm: ignore fake and broken MT devices An MT device without X/Y is not a touchpad. And neither are fake MT devices. Signed-off-by: Peter Hutterer Reviewed-by: Hans de Goede --- src/eventcomm.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/src/eventcomm.c b/src/eventcomm.c index cddf7fc..3a9d45d 100644 --- a/src/eventcomm.c +++ b/src/eventcomm.c @@ -325,6 +325,15 @@ event_query_is_touchpad(struct libevdev *evdev) libevdev_has_event_code(evdev, EV_ABS, BTN_TOOL_PEN)) /* Don't match wacom tablets */ return FALSE; + if (libevdev_has_event_code(evdev, EV_ABS, ABS_MT_SLOT)) { + if (libevdev_get_num_slots(evdev) == -1) + return FALSE; /* 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)) + return FALSE; + } + return TRUE; } -- cgit v1.2.3