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HID: multitouch: add MT_QUIRK_STICKY_FINGERS to MT_CLS_VTL

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Some VTL-class touchpads (e.g. TOPS0102:00 35CC:0104) intermittently
fail to release a finger contact. A previous slot remains logically
active, accompanied by stale BTN_TOOL_DOUBLETAP state, causing
gestures to stay latched and resulting in stuck two-finger
scrolling and false right-clicks.

Apply MT_QUIRK_STICKY_FINGERS to handle the unreleased contact correctly.

Link: https://gitlab.freedesktop.org/libinput/libinput/-/issues/1225
Suggested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: DaytonCL <artem749507@gmail.com>
Signed-off-by: DaytonCL <artem749507@gmail.com>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
This commit is contained in:
DaytonCL 2025-12-14 14:34:36 +01:00 committed by Benjamin Tissoires
parent 56e230723e
commit ff3f234ff1
1 changed files with 1 additions and 0 deletions
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drivers/hid/hid-multitouch.c
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@ -393,6 +393,7 @@ static const struct mt_class mt_classes[] = {
{ .name = MT_CLS_VTL,
.quirks = MT_QUIRK_ALWAYS_VALID |
MT_QUIRK_CONTACT_CNT_ACCURATE |
MT_QUIRK_STICKY_FINGERS |
MT_QUIRK_FORCE_GET_FEATURE,
},
{ .name = MT_CLS_GOOGLE,