This is a note to let you know that I've just added the patch titled

HID: elo: clear BTN_LEFT mapping

to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: hid-elo-clear-btn_left-mapping.patch and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Fri Mar 16 15:11:07 CET 2018

From: Jiri Kosina jkosina@suse.cz Date: Wed, 22 Nov 2017 11:19:51 +0100 Subject: HID: elo: clear BTN_LEFT mapping

From: Jiri Kosina jkosina@suse.cz

[ Upstream commit 9abd04af951e5734c9d5cfee9b49790844b734cf ]

ELO devices have one Button usage in GenDesk field, which makes hid-input map it to BTN_LEFT; that confuses userspace, which then considers the device to be a mouse/touchpad instead of touchscreen.

Fix that by unmapping BTN_LEFT and keeping only BTN_TOUCH in place.

Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/hid/hid-elo.c | 6 ++++++ 1 file changed, 6 insertions(+)

--- a/drivers/hid/hid-elo.c +++ b/drivers/hid/hid-elo.c @@ -42,6 +42,12 @@ static int elo_input_configured(struct h { struct input_dev *input = hidinput->input;

+ /* + * ELO devices have one Button usage in GenDesk field, which makes + * hid-input map it to BTN_LEFT; that confuses userspace, which then + * considers the device to be a mouse/touchpad instead of touchscreen. + */ + clear_bit(BTN_LEFT, input->keybit); set_bit(BTN_TOUCH, input->keybit); set_bit(ABS_PRESSURE, input->absbit); input_set_abs_params(input, ABS_PRESSURE, 0, 256, 0, 0);

Patches currently in stable-queue which might be from jkosina@suse.cz are

queue-4.15/hid-elo-clear-btn_left-mapping.patch queue-4.15/hid-multitouch-only-look-at-non-touch-fields-in-first-packet-of-a-frame.patch