rt2x00: Disable RX when switching antenna

Antenna switching will be ignored when RX is enabled
during the switch. Make sure we disable the RX during
the switch and don't forget to reenable it later.
Signed-off-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/wireless/rt2x00/rt2x00config.c

@@ -102,6 +102,13 @@ void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
 	libconf.ant.rx = rx;
 	libconf.ant.tx = tx;
 
+	/*
+	 * Antenna setup changes require the RX to be disabled,
+	 * else the changes will be ignored by the device.
+	 */
+	if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+		rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
+
 	/*
 	 * Write new antenna setup to device and reset the link tuner.
 	 * The latter is required since we need to recalibrate the
@@ -112,6 +119,9 @@ void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
 
 	rt2x00dev->link.ant.active.rx = libconf.ant.rx;
 	rt2x00dev->link.ant.active.tx = libconf.ant.tx;
+
+	if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+		rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
 }
 
 void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,