linux-kernel - [PATCH] Input: elantech - add LEN2146 to SMBus blacklist for ThinkPad L13 Gen2

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Date:   Mon,  8 Feb 2021 10:52:03 +0300
From:   Nikolai Kostrigin <nickel@...linux.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     nickel@...linux.org, benjamin.tissoires@...hat.com,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Colin Ian King <colin.king@...onical.com>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] Input: elantech - add LEN2146 to SMBus blacklist for ThinkPad L13 Gen2

ThinkPad L13 Gen2 has both touchpad and trackpoint.
PNP: LEN2146 PNP0f13
With the default protocol (elantech-smbus) trackpoint is not operating,
while touchpad does. Changing to elantech renders both operational.

Signed-off-by: Nikolai Kostrigin <nickel@...linux.org>
---
 drivers/input/mouse/elantech.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 90f8765f9efc..c4c3fa5828d8 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -1776,6 +1776,7 @@ static const char * const i2c_blacklist_pnp_ids[] = {
 	 * These are known to not be working properly as bits are missing
 	 * in elan_i2c.
 	 */
+	"LEN2146", /* ThinkPad L13 Gen2 */
 	NULL
 };
 
-- 
2.29.2