rt2x00: Initialize txop during conf_tx() callback

The txop parameter is supported by rt61pci and rt73usb,
and thus should be written to the register instead
of using the fixed value set during initialization.

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/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
index 2822684..a5e9650 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
@@ -736,6 +736,7 @@
 
 	queue->rt2x00dev = rt2x00dev;
 	queue->qid = qid;
+	queue->txop = 0;
 	queue->aifs = 2;
 	queue->cw_min = 5;
 	queue->cw_max = 10;