linux-kernel - [PATCH] Fix strange behavior of touchpad on Clevo NS70PU

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 20 Feb 2023 19:30:14 +0100
From:   Werner Sembach <wse@...edocomputers.com>
To:     dmitry.torokhov@...il.com, hdegoede@...hat.com,
        wse@...edocomputers.com, mkorpershoek@...libre.com,
        chenhuacai@...nel.org, tiwai@...e.de,
        wsa+renesas@...g-engineering.com, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] Fix strange behavior of touchpad on Clevo NS70PU

When closing the laptop lid with an external screen connected, the mouse
pointer has a constant movement to the lower right corner. Opening the
lid again stops this movement, but after that the touchpad does no longer
register clicks.

The touchpad is connected both via i2c-hid and PS/2, the predecessor of
this device (NS70MU) has the same layout in this regard and also strange
behaviour caused by the psmouse and the i2c-hid driver fighting over
touchpad control. This fix is reusing the same workaround by just
disabling the PS/2 aux port, that is only used by the touchpad, to give the
i2c-hid driver the lone control over the touchpad.

Signed-off-by: Werner Sembach <wse@...edocomputers.com>
Cc: stable@...r.kernel.org
---
 drivers/input/serio/i8042-acpipnpio.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/input/serio/i8042-acpipnpio.h b/drivers/input/serio/i8042-acpipnpio.h
index efc61736099b9..3a6640a11dd99 100644
--- a/drivers/input/serio/i8042-acpipnpio.h
+++ b/drivers/input/serio/i8042-acpipnpio.h
@@ -1156,6 +1156,12 @@ static const struct dmi_system_id i8042_dmi_quirk_table[] __initconst = {
 					SERIO_QUIRK_RESET_ALWAYS | SERIO_QUIRK_NOLOOP |
 					SERIO_QUIRK_NOPNP)
 	},
+	{
+		.matches = {
+			DMI_MATCH(DMI_BOARD_NAME, "NS5x_7xPU"),
+		},
+		.driver_data = (void *)(SERIO_QUIRK_NOAUX)
+	},
 	{
 		.matches = {
 			DMI_MATCH(DMI_BOARD_NAME, "NJ50_70CU"),
-- 
2.34.1