diff -up compat-wireless-2011-12-01/drivers/net/wireless/ath/ath9k/rc.c.orig compat-wireless-2011-12-01/drivers/net/wireless/ath/ath9k/rc.c
--- compat-wireless-2011-12-01/drivers/net/wireless/ath/ath9k/rc.c.orig	2011-12-09 10:08:18.951768673 -0500
+++ compat-wireless-2011-12-01/drivers/net/wireless/ath/ath9k/rc.c	2011-12-09 10:08:38.224527731 -0500
@@ -1615,6 +1615,7 @@ static struct rate_control_ops ath_rate_
 #endif
 };
 
+#ifdef CONFIG_ATH9K_RATE_CONTROL
 int ath_rate_control_register(void)
 {
 	return ieee80211_rate_control_register(&ath_rate_ops);
@@ -1624,3 +1625,4 @@ void ath_rate_control_unregister(void)
 {
 	ieee80211_rate_control_unregister(&ath_rate_ops);
 }
+#endif