Input: if Synaptics' absolute mode is disabled make sure that

       touchpad is reset back to relative mode and gestures
       (taps) are enabled

drivers/input/mouse/psmouse-base.c

@@ -389,6 +389,10 @@ static int psmouse_extensions(struct psmouse *psmouse)
  */
 			psmouse_max_proto = PSMOUSE_IMEX;
 		}
+/*
+ * Make sure that touchpad is in relative mode, gestures (taps) are enabled
+ */
+		synaptics_reset(psmouse);
 	}
 
 	if (psmouse_max_proto > PSMOUSE_IMEX && genius_detect(psmouse)) {

drivers/input/mouse/synaptics.c

@@ -357,9 +357,15 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
 	clear_bit(REL_Y, dev->relbit);
 }
 
-static void synaptics_disconnect(struct psmouse *psmouse)
+void synaptics_reset(struct psmouse *psmouse)
 {
+	/* reset touchpad back to relative mode, gestures enabled */
 	synaptics_mode_cmd(psmouse, 0);
+}
+
+static void synaptics_disconnect(struct psmouse *psmouse)
+{
+	synaptics_reset(psmouse);
 	kfree(psmouse->private);
 }
 

drivers/input/mouse/synaptics.h

@@ -12,6 +12,7 @@
 extern void synaptics_process_byte(struct psmouse *psmouse, struct pt_regs *regs);
 extern int synaptics_detect(struct psmouse *psmouse);
 extern int synaptics_init(struct psmouse *psmouse);
+extern void synaptics_reset(struct psmouse *psmouse);
 
 /* synaptics queries */
 #define SYN_QUE_IDENTIFY		0x00