diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index c41a0b9..a75f54d 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -198,6 +198,9 @@ int rt2x00mac_add_interface(struct ieee80211_hw *hw,
 	struct queue_entry *entry = NULL;
 	unsigned int i;
 
+	ERROR(rt2x00dev, "===>\n");
+	dump_stack();
+
 	/*
 	 * Don't allow interfaces to be added
 	 * the device has disappeared.
@@ -293,6 +296,8 @@ int rt2x00mac_add_interface(struct ieee80211_hw *hw,
 	 */
 	rt2x00dev->packet_filter = 0;
 
+	ERROR(rt2x00dev, "<===\n");
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(rt2x00mac_add_interface);
@@ -303,6 +308,9 @@ void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
 	struct rt2x00_dev *rt2x00dev = hw->priv;
 	struct rt2x00_intf *intf = vif_to_intf(conf->vif);
 
+	ERROR(rt2x00dev, "===>\n");
+	dump_stack();
+
 	/*
 	 * Don't allow interfaces to be remove while
 	 * either the device has disappeared or when
@@ -330,6 +338,8 @@ void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
 	 */
 	rt2x00lib_config_intf(rt2x00dev, intf,
 			      NL80211_IFTYPE_UNSPECIFIED, NULL, NULL);
+
+	ERROR(rt2x00dev, "<===\n");
 }
 EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface);
 
@@ -339,6 +349,9 @@ int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed)
 	struct ieee80211_conf *conf = &hw->conf;
 	int status;
 
+	ERROR(rt2x00dev, "===>\n");
+	dump_stack();
+
 	/*
 	 * Mac80211 might be calling this function while we are trying
 	 * to remove the device or perhaps suspending it.
@@ -386,6 +399,8 @@ int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed)
 		rt2x00lib_disable_radio(rt2x00dev);
 	}
 
+	ERROR(rt2x00dev, "<===\n");
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(rt2x00mac_config);
@@ -399,6 +414,9 @@ int rt2x00mac_config_interface(struct ieee80211_hw *hw,
 	int update_bssid = 0;
 	int status = 0;
 
+	ERROR(rt2x00dev, "===>\n");
+	dump_stack();
+
 	/*
 	 * Mac80211 might be calling this function while we are trying
 	 * to remove the device or perhaps suspending it.
@@ -436,6 +454,9 @@ int rt2x00mac_config_interface(struct ieee80211_hw *hw,
 		status = rt2x00queue_update_beacon(rt2x00dev, vif,
 						   conf->enable_beacon);
 
+	ERROR(rt2x00dev, "<===\n");
+	dump_stack();
+
 	return status;
 }
 EXPORT_SYMBOL_GPL(rt2x00mac_config_interface);