linux-kernel - [PATCH] Input: i8042 - Add ByteSpeed touchpad to noloop table

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Message-Id: <20201201054723.5939-1-po-hsu.lin@canonical.com>
Date:   Tue,  1 Dec 2020 13:47:23 +0800
From:   Po-Hsu Lin <po-hsu.lin@...onical.com>
To:     dmitry.torokhov@...il.com, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     kevin@...inlocke.name, hdegoede@...hat.com, limero1337@...il.com,
        jkosina@...e.cz, rajatja@...gle.com, po-hsu.lin@...onical.com
Subject: [PATCH] Input: i8042 - Add ByteSpeed touchpad to noloop table

It looks like the C15B laptop got another vendor: ByteSpeed LLC.

Avoid AUX loopback on this touchpad as well, thus input subsystem will
be able to recognize a Synaptics touchpad in the AUX port.

BugLink: https://bugs.launchpad.net/bugs/1906128
Signed-off-by: Po-Hsu Lin <po-hsu.lin@...onical.com>
---
 drivers/input/serio/i8042-x86ia64io.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
index a4c9b96..7ecb651 100644
--- a/drivers/input/serio/i8042-x86ia64io.h
+++ b/drivers/input/serio/i8042-x86ia64io.h
@@ -219,6 +219,10 @@ static const struct dmi_system_id __initconst i8042_dmi_noloop_table[] = {
 			DMI_MATCH(DMI_SYS_VENDOR, "PEGATRON CORPORATION"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "C15B"),
 		},
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ByteSpeed LLC"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "ByteSpeed Laptop C15B"),
+		},
 	},
 	{ }
 };
-- 
2.7.4