rt2x00: Protect queue control with mutex

Add wrapper functions in rt2x00queue.c to
start & stop queues. This control must be protected
using a mutex.

Queues can also be paused which will halt the flow
of packets between the driver and mac80211. This doesn't
require a mutex protection.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2x00config.c b/drivers/net/wireless/rt2x00/rt2x00config.c
index d2f1f0a..70ca937 100644
--- a/drivers/net/wireless/rt2x00/rt2x00config.c
+++ b/drivers/net/wireless/rt2x00/rt2x00config.c
@@ -146,7 +146,7 @@
 	 * else the changes will be ignored by the device.
 	 */
 	if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
-		rt2x00dev->ops->lib->stop_queue(rt2x00dev->rx);
+		rt2x00queue_stop_queue(rt2x00dev->rx);
 
 	/*
 	 * Write new antenna setup to device and reset the link tuner.
@@ -160,7 +160,7 @@
 	memcpy(active, &config, sizeof(config));
 
 	if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
-		rt2x00dev->ops->lib->start_queue(rt2x00dev->rx);
+		rt2x00queue_start_queue(rt2x00dev->rx);
 }
 
 void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,