rt2x00: configure_filter() callback is allowed to sleep

The configure_filter() callback function no longer needs
to be atomic. Remove the scheduled work structure and
call into the driver configure_filter() directly.
Signed-off-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2x00.h

@@ -826,7 +826,6 @@ struct rt2x00_dev {
 	 * due to RTNL locking requirements.
 	 */
 	struct work_struct intf_work;
-	struct work_struct filter_work;
 
 	/*
 	 * Data queue arrays for RX, TX and Beacon.

drivers/net/wireless/rt2x00/rt2x00dev.c

@@ -118,14 +118,6 @@ void rt2x00lib_toggle_rx(struct rt2x00_dev *rt2x00dev, enum dev_state state)
 		rt2x00link_start_tuner(rt2x00dev);
 }
 
-static void rt2x00lib_packetfilter_scheduled(struct work_struct *work)
-{
-	struct rt2x00_dev *rt2x00dev =
-	    container_of(work, struct rt2x00_dev, filter_work);
-
-	rt2x00dev->ops->lib->config_filter(rt2x00dev, rt2x00dev->packet_filter);
-}
-
 static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac,
 					  struct ieee80211_vif *vif)
 {
@@ -859,7 +851,6 @@ int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
 	 * Initialize configuration work.
 	 */
 	INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled);
-	INIT_WORK(&rt2x00dev->filter_work, rt2x00lib_packetfilter_scheduled);
 
 	/*
 	 * Allocate queue array.
@@ -907,7 +898,6 @@ void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev)
 	/*
 	 * Stop all work.
 	 */
-	cancel_work_sync(&rt2x00dev->filter_work);
 	cancel_work_sync(&rt2x00dev->intf_work);
 
 	/*

drivers/net/wireless/rt2x00/rt2x00mac.c

@@ -430,10 +430,7 @@ void rt2x00mac_configure_filter(struct ieee80211_hw *hw,
 		return;
 	rt2x00dev->packet_filter = *total_flags;
 
-	if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags))
-		rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags);
-	else
-		ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->filter_work);
+	rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags);
 }
 EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter);