Thread (5 messages) flat view 5 messages, 2 authors, 2021-01-26

Re: [PATCH] HID: multitouch: Apply MT_QUIRK_CONFIDENCE quirk for multi-input devices

From: Benjamin Tissoires <hidden>
Date: 2021-01-18 14:43:56
Also in: lkml

Hi,

On Mon, Jan 18, 2021 at 2:45 PM Kai-Heng Feng
[off-list ref] wrote:
Palm ejection stops working on some Elan and Synaptics touchpad after
commit 40d5bb87377a ("HID: multitouch: enable multi-input as a quirk for
some devices").

The commit changes the mt_class from MT_CLS_WIN_8 to
MT_CLS_WIN_8_FORCE_MULTI_INPUT, so MT_QUIRK_CONFIDENCE isn't applied
anymore.

So also apply the quirk since MT_CLS_WIN_8_FORCE_MULTI_INPUT is
essentially MT_CLS_WIN_8.

Fixes: 40d5bb87377a ("HID: multitouch: enable multi-input as a quirk for some devices")
Signed-off-by: Kai-Heng Feng <redacted>
Thanks for the patch.

IIt seems I was too lazy to write a regression test for it, and this
strikes back.
Can you also work on a regression test for this at
https://gitlab.freedesktop.org/libevdev/hid-tools ?

Cheers,
Benjamin



quoted hunk ↗ jump to hunk
---
 drivers/hid/hid-multitouch.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 0743ef51d3b2..8429ebe7097e 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -758,7 +758,8 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
                        MT_STORE_FIELD(inrange_state);
                        return 1;
                case HID_DG_CONFIDENCE:
-                       if (cls->name == MT_CLS_WIN_8 &&
+                       if ((cls->name == MT_CLS_WIN_8 ||
+                            cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT) &&
                                (field->application == HID_DG_TOUCHPAD ||
                                 field->application == HID_DG_TOUCHSCREEN))
                                app->quirks |= MT_QUIRK_CONFIDENCE;
--
2.29.2
  
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