On 30/09/25 8:17 pm, Greg Kroah-Hartman wrote:
6.12-stable review patch. If anyone has any objections, please let me know.
From: Kerem Karabay kekrby@gmail.com
[ Upstream commit e0976a61a543b5e03bc0d08030a0ea036ee3751d ]
In Apple Touch Bar, the tip state is contained in fields with the HID_DG_TOUCH usage. This feature is gated by a quirk in order to prevent breaking other devices, see commit c2ef8f21ea8f ("HID: multitouch: add support for trackpads").
Acked-by: Benjamin Tissoires bentiss@kernel.org Signed-off-by: Kerem Karabay kekrby@gmail.com Co-developed-by: Aditya Garg gargaditya08@live.com Signed-off-by: Aditya Garg gargaditya08@live.com Signed-off-by: Jiri Kosina jkosina@suse.com Signed-off-by: Sasha Levin sashal@kernel.org
drivers/hid/hid-multitouch.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index be2bbce25b3df..39a8c6619876b 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -819,6 +819,17 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, MT_STORE_FIELD(confidence_state); return 1;
case HID_DG_TOUCH:/** Legacy devices use TIPSWITCH and not TOUCH.* One special case here is of the Apple Touch Bars.* In these devices, the tip state is contained in* fields with the HID_DG_TOUCH usage.* Let's just ignore this field for other devices.*/if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR))return -1;fallthrough;@@ -889,10 +900,6 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, case HID_DG_CONTACTMAX: /* contact max are global to the report */ return -1;
case HID_DG_TOUCH:/* Legacy devices use TIPSWITCH and not TOUCH.* Let's just ignore this field. */return -1;
Same here: https://lore.kernel.org/stable/MAUPR01MB11546CD5BF3C073E67FEE70BCB81AA@MAUPR...