Input: synaptics - enable SMBus on ThinkPad E480 and E580

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@gmail.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index b6da0c1267e36e96cdc3b808e1fae122bec7add4..8e6077d8e434a30cf76598164aa95cffcf2439fb 100644 (file)
--- 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