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Commit b201fe49 authored by José Expósito's avatar José Expósito Committed by Greg Kroah-Hartman
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HID: multitouch: fix Asus ExpertBook P2 P2451FA trackpoint 

[ Upstream commit 4eab1c2fe06c98a4dff258dd64800b6986c101e9 ]

The HID descriptor of this device contains two mouse collections, one
for mouse emulation and the other for the trackpoint.

Both collections get merged and, because the first one defines X and Y,
the movemenent events reported by the trackpoint collection are
ignored.

Set the MT_CLS_WIN_8_FORCE_MULTI_INPUT class for this device to be able
to receive its reports.

This fix is similar to/based on commit 40d5bb87377a ("HID: multitouch:
enable multi-input as a quirk for some devices").

Link: https://gitlab.freedesktop.org/libinput/libinput/-/issues/825


Reported-by: default avatarAkito <the@akito.ooo>
Tested-by: default avatarAkito <the@akito.ooo>
Signed-off-by: default avatarJosé Expósito <jose.exposito89@gmail.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 515959eb

drivers/hid/hid-multitouch.c

+4 −0
Original line number Diff line number Diff line
@@ -1953,6 +1953,10 @@ static const struct hid_device_id mt_devices[] = { 
		HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,

			USB_VENDOR_ID_ELAN, 0x313a) },



	{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,

		HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,

			USB_VENDOR_ID_ELAN, 0x3148) },



	/* Elitegroup panel */

	{ .driver_data = MT_CLS_SERIAL,

		MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,