linux-kernel - [PATCH 4.19 23/90] Input: synaptics - enable SMBus on ThinkPad E480 and E580

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Date:   Mon, 24 Jun 2019 17:56:13 +0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Alexander Mikhaylenko <exalm7659@...il.com>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>
Subject: [PATCH 4.19 23/90] Input: synaptics - enable SMBus on ThinkPad E480 and E580

From: Alexander Mikhaylenko <exalm7659@...il.com>

commit 9843f3e08e2144724be7148e08d77a195dea257a upstream.

They are capable of using intertouch and it works well with
psmouse.synaptics_intertouch=1, so add them to the list.

Without it, scrolling and gestures are jumpy, three-finger pinch gesture
doesn't work and three- or four-finger swipes sometimes get stuck.

Signed-off-by: Alexander Mikhaylenko <exalm7659@...il.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc: stable@...r.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/input/mouse/synaptics.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -179,6 +179,8 @@ static const char * const smbus_pnp_ids[
 	"LEN0096", /* X280 */
 	"LEN0097", /* X280 -> ALPS trackpoint */
 	"LEN200f", /* T450s */
+	"LEN2054", /* E480 */
+	"LEN2055", /* E580 */
 	"SYN3052", /* HP EliteBook 840 G4 */
 	"SYN3221", /* HP 15-ay000 */
 	NULL