linux-kernel - [PATCH AUTOSEL 6.6 04/19] Revert "HID: multitouch: Add support for lenovo Y9000P Touchpad"

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Message-Id: <20250126150315.956795-4-sashal@kernel.org>
Date: Sun, 26 Jan 2025 10:02:59 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Jiri Kosina <jkosina@...e.com>,
	Ulrich Müller <ulm@...too.org>,
	WangYuli <wangyuli@...ontech.com>,
	Sasha Levin <sashal@...nel.org>,
	jikos@...nel.org,
	bentiss@...nel.org,
	linux-input@...r.kernel.org
Subject: [PATCH AUTOSEL 6.6 04/19] Revert "HID: multitouch: Add support for lenovo Y9000P Touchpad"

From: Jiri Kosina <jkosina@...e.com>

[ Upstream commit 3d88ba86ba6f35a0467f25a88c38aa5639190d04 ]

This reverts commit 251efae73bd46b097deec4f9986d926813aed744.

Quoting Wang Yuli:

	"The 27C6:01E0 touchpad doesn't require the workaround and applying it
	would actually break functionality.

	The initial report came from a BBS forum, but we suspect the
	information provided by the forum user may be incorrect which could
	happen sometimes. [1]

	Further investigation showed that the Lenovo Y9000P 2024 doesn't even
	use a Goodix touchpad. [2]

	For the broader issue of 27c6:01e0 being unusable on some devices, it
	just need to address it with a libinput quirk.

	In conclusion, we should revert this commit, which is the best
	solution."

Reported-by: Ulrich Müller <ulm@...too.org>
Reported-by: WangYuli <wangyuli@...ontech.com>
Link: https://lore.kernel.org/all/uikt4wwpw@gentoo.org/
Signed-off-by: Jiri Kosina <jkosina@...e.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/hid/hid-ids.h        | 1 -
 drivers/hid/hid-multitouch.c | 8 ++------
 2 files changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index f16940f3d93d4..1174626904cb0 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -506,7 +506,6 @@
 #define USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100 0xe100
 
 #define I2C_VENDOR_ID_GOODIX		0x27c6
-#define I2C_DEVICE_ID_GOODIX_01E0	0x01e0
 #define I2C_DEVICE_ID_GOODIX_01E8	0x01e8
 #define I2C_DEVICE_ID_GOODIX_01E9	0x01e9
 #define I2C_DEVICE_ID_GOODIX_01F0	0x01f0
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index bf9cad7112592..e62104e1a6038 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1447,8 +1447,7 @@ static __u8 *mt_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 {
 	if (hdev->vendor == I2C_VENDOR_ID_GOODIX &&
 	    (hdev->product == I2C_DEVICE_ID_GOODIX_01E8 ||
-	     hdev->product == I2C_DEVICE_ID_GOODIX_01E9 ||
-		 hdev->product == I2C_DEVICE_ID_GOODIX_01E0)) {
+	     hdev->product == I2C_DEVICE_ID_GOODIX_01E9)) {
 		if (rdesc[607] == 0x15) {
 			rdesc[607] = 0x25;
 			dev_info(
@@ -2073,10 +2072,7 @@ static const struct hid_device_id mt_devices[] = {
 		     I2C_DEVICE_ID_GOODIX_01E8) },
 	{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
 	  HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX,
-		     I2C_DEVICE_ID_GOODIX_01E9) },
-	{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
-	  HID_DEVICE(BUS_I2C, HID_GROUP_ANY, I2C_VENDOR_ID_GOODIX,
-		     I2C_DEVICE_ID_GOODIX_01E0) },
+		     I2C_DEVICE_ID_GOODIX_01E8) },
 
 	/* GoodTouch panels */
 	{ .driver_data = MT_CLS_NSMU,
-- 
2.39.5