Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Pull input fixes from Dmitry Torokhov:

 - a fix for use-after-free in Synaptics RMI4 driver

 - correction to multitouch contact tracking on certain ALPS touchpads
   (which got broken when we tried to fix the 2-finger scrolling)

 - touchpad on Lenovo T640p is switched over to SMbus/RMI

 - a few device node refcount fixes

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: synaptics-rmi4 - prevent UAF reported by KASAN
  Input: ALPS - fix multi-touch decoding on SS4 plus touchpads
  Input: synaptics - Lenovo Thinkpad T460p devices should use RMI
  Input: of_touchscreen - add MODULE_LICENSE
  Input: 88pm860x-ts - fix child-node lookup
  Input: twl6040-vibra - fix child-node lookup
  Input: twl4030-vibra - fix sibling-node lookup

3 files changed, 20 insertions, 14 deletions

diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 579b899add26..dbe57da8c1a1 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -1250,29 +1250,32 @@ static int alps_decode_ss4_v2(struct alps_fields *f,
 	case SS4_PACKET_ID_MULTI:
 		if (priv->flags & ALPS_BUTTONPAD) {
 			if (IS_SS4PLUS_DEV(priv->dev_id)) {
-				f->mt[0].x = SS4_PLUS_BTL_MF_X_V2(p, 0);
-				f->mt[1].x = SS4_PLUS_BTL_MF_X_V2(p, 1);
+				f->mt[2].x = SS4_PLUS_BTL_MF_X_V2(p, 0);
+				f->mt[3].x = SS4_PLUS_BTL_MF_X_V2(p, 1);
+				no_data_x = SS4_PLUS_MFPACKET_NO_AX_BL;
 			} else {
 				f->mt[2].x = SS4_BTL_MF_X_V2(p, 0);
 				f->mt[3].x = SS4_BTL_MF_X_V2(p, 1);
+				no_data_x = SS4_MFPACKET_NO_AX_BL;
 			}
+			no_data_y = SS4_MFPACKET_NO_AY_BL;
 
 			f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0);
 			f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1);
-			no_data_x = SS4_MFPACKET_NO_AX_BL;
-			no_data_y = SS4_MFPACKET_NO_AY_BL;
 		} else {
 			if (IS_SS4PLUS_DEV(priv->dev_id)) {
-				f->mt[0].x = SS4_PLUS_STD_MF_X_V2(p, 0);
-				f->mt[1].x = SS4_PLUS_STD_MF_X_V2(p, 1);
+				f->mt[2].x = SS4_PLUS_STD_MF_X_V2(p, 0);
+				f->mt[3].x = SS4_PLUS_STD_MF_X_V2(p, 1);
+				no_data_x = SS4_PLUS_MFPACKET_NO_AX;
 			} else {
-				f->mt[0].x = SS4_STD_MF_X_V2(p, 0);
-				f->mt[1].x = SS4_STD_MF_X_V2(p, 1);
+				f->mt[2].x = SS4_STD_MF_X_V2(p, 0);
+				f->mt[3].x = SS4_STD_MF_X_V2(p, 1);
+				no_data_x = SS4_MFPACKET_NO_AX;
 			}
+			no_data_y = SS4_MFPACKET_NO_AY;
+
 			f->mt[2].y = SS4_STD_MF_Y_V2(p, 0);
 			f->mt[3].y = SS4_STD_MF_Y_V2(p, 1);
-			no_data_x = SS4_MFPACKET_NO_AX;
-			no_data_y = SS4_MFPACKET_NO_AY;
 		}
 
 		f->first_mp = 0;
diff --git a/drivers/input/mouse/alps.h b/drivers/input/mouse/alps.h
index c80a7c76cb76..79b6d69d1486 100644
--- a/drivers/input/mouse/alps.h
+++ b/drivers/input/mouse/alps.h
@@ -141,10 +141,12 @@ enum SS4_PACKET_ID {
 #define SS4_TS_Z_V2(_b)		(s8)(_b[4] & 0x7F)
 
 
-#define SS4_MFPACKET_NO_AX	8160	/* X-Coordinate value */
-#define SS4_MFPACKET_NO_AY	4080	/* Y-Coordinate value */
-#define SS4_MFPACKET_NO_AX_BL	8176	/* Buttonless X-Coordinate value */
-#define SS4_MFPACKET_NO_AY_BL	4088	/* Buttonless Y-Coordinate value */
+#define SS4_MFPACKET_NO_AX		8160	/* X-Coordinate value */
+#define SS4_MFPACKET_NO_AY		4080	/* Y-Coordinate value */
+#define SS4_MFPACKET_NO_AX_BL		8176	/* Buttonless X-Coord value */
+#define SS4_MFPACKET_NO_AY_BL		4088	/* Buttonless Y-Coord value */
+#define SS4_PLUS_MFPACKET_NO_AX		4080	/* SS4 PLUS, X */
+#define SS4_PLUS_MFPACKET_NO_AX_BL	4088	/* Buttonless SS4 PLUS, X */
 
 /*
  * enum V7_PACKET_ID - defines the packet type for V7
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index ee5466a374bf..cd9f61cb3fc6 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -173,6 +173,7 @@ static const char * const smbus_pnp_ids[] = {
 	"LEN0046", /* X250 */
 	"LEN004a", /* W541 */
 	"LEN200f", /* T450s */
+	"LEN2018", /* T460p */
 	NULL
 };