linux-kernel - [PATCH AUTOSEL for 4.4 013/101] Input: i8042 - add TUXEDO BU1406 (N24

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Message-ID: <20171207155005.5852-13-alexander.levin@verizon.com>
Date:   Thu, 7 Dec 2017 15:50:15 +0000
From:   alexander.levin@...izon.com
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        alexander.levin@...izon.com
Subject: [PATCH AUTOSEL for 4.4 013/101] Input: i8042 - add TUXEDO BU1406
 (N24_25BU) to the nomux list

From: Dmitry Torokhov <dmitry.torokhov@...il.com>

[ Upstream commit a4c2a13129f7c5bcf81704c06851601593303fd5 ]

TUXEDO BU1406 does not implement active multiplexing mode properly,
and takes around 550 ms in i8042_set_mux_mode(). Given that the
device does not have external AUX port, there is no downside in
disabling the MUX mode.

Reported-by: Paul Menzel <pmenzel@...gen.mpg.de>
Suggested-by: Vojtech Pavlik <vojtech@...e.cz>
Reviewed-by: Marcos Paulo de Souza <marcos.souza.org@...il.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
---
 drivers/input/serio/i8042-x86ia64io.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
index dbf09836ff30..d1051e3ce819 100644
--- a/drivers/input/serio/i8042-x86ia64io.h
+++ b/drivers/input/serio/i8042-x86ia64io.h
@@ -520,6 +520,13 @@ static const struct dmi_system_id __initconst i8042_dmi_nomux_table[] = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "IC4I"),
 		},
 	},
+	{
+		/* TUXEDO BU1406 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Notebook"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "N24_25BU"),
+		},
+	},
 	{ }
 };
 
-- 
2.11.0