Messages in this thread Patch in this message | | | From | Luis Henriques <> | Subject | [PATCH 3.11 01/46] Input: cypress_ps2 - don't report as a button pads | Date | Wed, 16 Apr 2014 11:31:17 +0100 |
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3.11.10.8 -stable review patch. If anyone has any objections, please let me know.
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From: Hans de Goede <hdegoede@redhat.com>
commit 6797b39e6f6f34c74177736e146406e894b9482b upstream.
The cypress PS/2 trackpad models supported by the cypress_ps2 driver emulate BTN_RIGHT events in firmware based on the finger position, as part of this no motion events are sent when the finger is in the button area.
The INPUT_PROP_BUTTONPAD property is there to indicate to userspace that BTN_RIGHT events should be emulated in userspace, which is not necessary in this case.
When INPUT_PROP_BUTTONPAD is advertised userspace will wait for a motion event before propagating the button event higher up the stack, as it needs current abs x + y data for its BTN_RIGHT emulation. Since in the cypress_ps2 pads don't report motion events in the button area, this means that clicks in the button area end up being ignored, so INPUT_PROP_BUTTONPAD actually causes problems for these touchpads, and removing it fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=76341
Reported-by: Adam Williamson <awilliam@redhat.com> Tested-by: Adam Williamson <awilliam@redhat.com> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- drivers/input/mouse/cypress_ps2.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/drivers/input/mouse/cypress_ps2.c b/drivers/input/mouse/cypress_ps2.c index 888a81a..0aaea7a 100644 --- a/drivers/input/mouse/cypress_ps2.c +++ b/drivers/input/mouse/cypress_ps2.c @@ -410,7 +410,6 @@ static int cypress_set_input_params(struct input_dev *input, __clear_bit(REL_X, input->relbit); __clear_bit(REL_Y, input->relbit); - __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); __set_bit(EV_KEY, input->evbit); __set_bit(BTN_LEFT, input->keybit); __set_bit(BTN_RIGHT, input->keybit); -- 1.9.1
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