From f0ab595c2de0fd8fec27177fa80d001f22fb1b6c Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Wed, 22 Nov 2017 11:19:51 +0100 Subject: [PATCH] HID: elo: clear BTN_LEFT mapping [ 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 Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/hid/hid-elo.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/hid/hid-elo.c b/drivers/hid/hid-elo.c index 0cd4f7216239..5eea6fe0d7bd 100644 --- a/drivers/hid/hid-elo.c +++ b/drivers/hid/hid-elo.c @@ -42,6 +42,12 @@ static int elo_input_configured(struct hid_device *hdev, { 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);