[PATCH] USB: update for mtouchusb

The attached patch for the 3M Touch Systems Capacitive controller. (again)

Quick list of changes:

   * decrease mtouch->open counter in the event of a urb submission
     failure

The changes are due to comments Oliver Neukum's comments on the
touchkit.c driver.  Good catch!  Sorry I missed it.

http://marc.theaimsgroup.com/?l=linux-usb-devel&m=108343028201159&w=2

drivers/usb/input/mtouchusb.c

@@ -142,8 +142,10 @@ static int mtouchusb_open (struct input_dev *input)
 
         mtouch->irq->dev = mtouch->udev;
 
-        if (usb_submit_urb (mtouch->irq, GFP_ATOMIC))
+        if (usb_submit_urb (mtouch->irq, GFP_ATOMIC)) {
+                mtouch->open--;
                 return -EIO;
+        }
 
         return 0;
 }