[PATCH] zd1211rw: disable TX queue during stop

This avoids some potential races.
Signed-off-by: NDaniel Drake <dsd@gentoo.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/zd1211rw/zd_mac.c

@@ -197,6 +197,8 @@ int zd_mac_stop(struct net_device *netdev)
 	struct zd_mac *mac = zd_netdev_mac(netdev);
 	struct zd_chip *chip = &mac->chip;
 
+	netif_stop_queue(netdev);
+
 	/*
 	 * The order here deliberately is a little different from the open()
 	 * method, since we need to make sure there is no opportunity for RX