• Peter Hutterer's avatar
    touchpad: never reduce the slot count to 0 · 1e1b9c0e
    Peter Hutterer authored
    Where a user releases all touches during a SYN_DROPPED and then puts more than
    one finger back down before we sync, we end up with nonzero fake touches but
    a zero slot count. This is caused by a wrong event sequences provided by
    libevdev in that case.
    
    This really needs to be fixed in libevdev, see
    libevdev/libevdev!19
    
    In the meantime, put a check in to ignore that case and never reduce the slot
    count to 0. It still leaves us open for some issues where 3fg gestures may
    stop working if the right sequences are triggered during SYN_DROPPED but
    updating libevdev will eventually make that go away too.
    
    Fixes #422Signed-off-by: Peter Hutterer's avatarPeter Hutterer <peter.hutterer@who-t.net>
    1e1b9c0e
test-touchpad.c 204 KB