rt2x00: Rename queue->lock to queue->index_lock

The queue->lock is only used to protect the index
numbers. Rename the lock accordingly.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2x00debug.c b/drivers/net/wireless/rt2x00/rt2x00debug.c
index 8296a9d..64dfb1f 100644
--- a/drivers/net/wireless/rt2x00/rt2x00debug.c
+++ b/drivers/net/wireless/rt2x00/rt2x00debug.c
@@ -342,7 +342,7 @@
 	    sprintf(data, "qid\tcount\tlimit\tlength\tindex\tdma done\tdone\n");
 
 	queue_for_each(intf->rt2x00dev, queue) {
-		spin_lock_irqsave(&queue->lock, irqflags);
+		spin_lock_irqsave(&queue->index_lock, irqflags);
 
 		temp += sprintf(temp, "%d\t%d\t%d\t%d\t%d\t%d\t%d\n", queue->qid,
 				queue->count, queue->limit, queue->length,
@@ -350,7 +350,7 @@
 				queue->index[Q_INDEX_DMA_DONE],
 				queue->index[Q_INDEX_DONE]);
 
-		spin_unlock_irqrestore(&queue->lock, irqflags);
+		spin_unlock_irqrestore(&queue->index_lock, irqflags);
 	}
 
 	size = strlen(data);