linux-kernel - [PATCH v2] Input: i8042 - add nomux quirk for Acer P459-G2-M

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Message-ID: <20231130195615.v2.1.Ibe78a9df97ecd18dc227a5cff67d3029631d9c11@changeid>
Date:   Thu, 30 Nov 2023 19:56:19 +0000
From:   Esther Shimanovich <eshimanovich@...omium.org>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     linux-input@...r.kernel.org,
        Esther Shimanovich <eshimanovich@...omium.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Jonathan Denose <jdenose@...omium.org>,
        Mattijs Korpershoek <mkorpershoek@...libre.com>,
        Werner Sembach <wse@...edocomputers.com>
Subject: [PATCH v2] Input: i8042 - add nomux quirk for Acer P459-G2-M

After the laptop lid is opened, and the device resumes from S3 deep
sleep, if the user presses a keyboard key while the screen is still black,
the mouse and keyboard become unusable.

Enabling this quirk prevents this behavior from occurring.

Signed-off-by: Esther Shimanovich <eshimanovich@...omium.org>
---
Hello! Thanks for the prompt response. I had previously tried the
i8042.nomux=1 quirk which didn't seem to work. But I was trying it
together with other quirks, which may have changed the behavior.
When I applied the nomux quirk to the driver, that did fix the bug
on my device. Submitting the new patch!

Changes in v2:
- change noloop to nomux

 drivers/input/serio/i8042-acpipnpio.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/input/serio/i8042-acpipnpio.h b/drivers/input/serio/i8042-acpipnpio.h
index 028e45bd050bf..612c4e3427cef 100644
--- a/drivers/input/serio/i8042-acpipnpio.h
+++ b/drivers/input/serio/i8042-acpipnpio.h
@@ -360,6 +360,14 @@ static const struct dmi_system_id i8042_dmi_quirk_table[] __initconst = {
 		},
 		.driver_data = (void *)(SERIO_QUIRK_DRITEK)
 	},
+	{
+		/* Acer TravelMate P459-G2-M */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate P459-G2-M"),
+		},
+		.driver_data = (void *)(SERIO_QUIRK_NOMUX)
+	},
 	{
 		/* Amoi M636/A737 */
 		.matches = {
-- 
2.43.0.rc2.451.g8631bc7472-goog