Comment 7 for bug 1767832

I think this commit fixes your issue?

commit ec6adef5fbc3f140c70e7499fdad818acb3a46c6
Author: Benjamin Tissoires <email address hidden>
Date: Tue Sep 4 15:31:12 2018 +0200

    HID: multitouch: fix Elan panels with 2 input modes declaration

    When implementing commit 7f81c8db5489 ("HID: multitouch: simplify
    the settings of the various features"), I wrongly removed a test
    that made sure we never try to set the second InputMode feature
    to something else than 0.

    This broke badly some recent Elan panels that now forget to send the
    click button in some area of the touchpad.

    Link: https://bugzilla.kernel.org/show_bug.cgi?id=200899
    Fixes: 7f81c8db5489 ("HID: multitouch: simplify the settings of the various features")
    Cc: <email address hidden> # v4.18+
    Signed-off-by: Benjamin Tissoires <email address hidden>
    Signed-off-by: Jiri Kosina <email address hidden>