Input: when disconnecting PS/2 mouse give protocol's disconnect

       handler chance to run before starting ignoring mouse data.
       Otherwise interrupt handler will discard all ACKs and the
       very first command in cleanup sequence will fail (Synaptics
       was failing to return to relative mode on module unload).

drivers/input/mouse/psmouse-base.c

@@ -552,7 +552,7 @@ static void psmouse_disconnect(struct serio *serio)
 {
 	struct psmouse *psmouse = serio->private;
 
-	psmouse->state = PSMOUSE_IGNORE;
+	psmouse->state = PSMOUSE_CMD_MODE;
 
 	if (psmouse->ptport) {
 		if (psmouse->ptport->deactivate)
@@ -565,6 +565,8 @@ static void psmouse_disconnect(struct serio *serio)
 	if (psmouse->disconnect)
 		psmouse->disconnect(psmouse);
 
+	psmouse->state = PSMOUSE_IGNORE;
+
 	input_unregister_device(&psmouse->dev);
 	serio_close(serio);
 	kfree(psmouse);
@@ -592,7 +594,7 @@ static void psmouse_connect(struct serio *serio, struct serio_dev *dev)
 	psmouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
 	psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
 
-	psmouse->state = PSMOUSE_NEW_DEVICE;
+	psmouse->state = PSMOUSE_CMD_MODE;
 	psmouse->serio = serio;
 	psmouse->dev.private = psmouse;
 
@@ -650,7 +652,7 @@ static int psmouse_reconnect(struct serio *serio)
 		return -1;
 	}
 
-	psmouse->state = PSMOUSE_NEW_DEVICE;
+	psmouse->state = PSMOUSE_CMD_MODE;
 	psmouse->type = psmouse->acking = psmouse->cmdcnt = psmouse->pktcnt = 0;
 	if (psmouse->reconnect) {
 	       if (psmouse->reconnect(psmouse))

drivers/input/mouse/psmouse.h

@@ -18,7 +18,7 @@
 #define PSMOUSE_RET_NAK		0xfe
 
 /* psmouse states */
-#define PSMOUSE_NEW_DEVICE	0
+#define PSMOUSE_CMD_MODE	0
 #define PSMOUSE_ACTIVATED	1
 #define PSMOUSE_IGNORE		2