This is a note to let you know that I've just added the patch titled
HID: elo: clear BTN_LEFT mapping
to the 4.4-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-4.4 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 Mon Mar 19 09:58:12 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-4.4/hid-elo-clear-btn_left-mapping.patch queue-4.4/hid-clamp-input-to-logical-range-if-no-null-state.patch queue-4.4/hid-reject-input-outside-logical-range-only-if-null-state-is-set.patch