rt2x00: Reduce tx status reading timeout

When no TX status was available, the default timeout
of 20ms is a bit high. The frame is highly likely already
send out, so the TX status should be available within
only a few milliseconds.
Signed-off-by: NIvo van Doorn <IvDoorn@gmail.com>
Acked-by: NGertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2800usb.c

@@ -134,7 +134,7 @@ static void rt2800usb_tx_sta_fifo_read_completed(struct rt2x00_dev *rt2x00dev,
 	} else if (!kfifo_is_empty(&rt2x00dev->txstatus_fifo)) {
 		queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work);
 	} else if (rt2800usb_txstatus_pending(rt2x00dev)) {
-		mod_timer(&rt2x00dev->txstatus_timer, jiffies + msecs_to_jiffies(20));
+		mod_timer(&rt2x00dev->txstatus_timer, jiffies + msecs_to_jiffies(2));
 	}
 }
 
@@ -493,7 +493,7 @@ static void rt2800usb_work_txdone(struct work_struct *work)
 	 * also delayed -> use a timer to retrieve it.
 	 */
 	if (rt2800usb_txstatus_pending(rt2x00dev))
-		mod_timer(&rt2x00dev->txstatus_timer, jiffies + msecs_to_jiffies(20));
+		mod_timer(&rt2x00dev->txstatus_timer, jiffies + msecs_to_jiffies(2));
 }
 
 /*