> I remarked a small regression in this patch: the detection of the
> serial protocol is not handled anymore. I was indeed relying on the
> fact that the parameter "id" in mt_probe was null to know that the
> device was not already in the list of known devices.
I see. Will this suffice?
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 125c1e7..507981e 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -673,8 +673,8 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
if (ret)
goto fail;
- if (!id && td->touches_by_report == 1) {
- /* the device has been sent by hid-generic */
+ /* unknown serial devices need special quirks */
+ if ((!id || id->product == HID_ANY_ID) && td->touches_by_report == 1) {
mtclass = &td->mtclass;
mtclass->quirks |= MT_QUIRK_ALWAYS_VALID;
mtclass->quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
Cheers,
Henrik
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