--- zzzz-none-000/linux-3.10.107/drivers/net/wireless/ath/ath9k/ar9003_rtt.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/net/wireless/ath/ath9k/ar9003_rtt.h	2021-02-04 17:41:59.000000000 +0000
@@ -17,6 +17,7 @@
 #ifndef AR9003_RTT_H
 #define AR9003_RTT_H
 
+#ifdef CONFIG_ATH9K_PCOEM
 void ar9003_hw_rtt_enable(struct ath_hw *ah);
 void ar9003_hw_rtt_disable(struct ath_hw *ah);
 void ar9003_hw_rtt_set_mask(struct ath_hw *ah, u32 rtt_mask);
@@ -25,5 +26,40 @@
 void ar9003_hw_rtt_fill_hist(struct ath_hw *ah);
 void ar9003_hw_rtt_clear_hist(struct ath_hw *ah);
 bool ar9003_hw_rtt_restore(struct ath_hw *ah, struct ath9k_channel *chan);
+#else
+static inline void ar9003_hw_rtt_enable(struct ath_hw *ah)
+{
+}
+
+static inline void ar9003_hw_rtt_disable(struct ath_hw *ah)
+{
+}
+
+static inline void ar9003_hw_rtt_set_mask(struct ath_hw *ah, u32 rtt_mask)
+{
+}
+
+static inline bool ar9003_hw_rtt_force_restore(struct ath_hw *ah)
+{
+	return false;
+}
+
+static inline void ar9003_hw_rtt_load_hist(struct ath_hw *ah)
+{
+}
+
+static inline void ar9003_hw_rtt_fill_hist(struct ath_hw *ah)
+{
+}
+
+static inline void ar9003_hw_rtt_clear_hist(struct ath_hw *ah)
+{
+}
+
+static inline bool ar9003_hw_rtt_restore(struct ath_hw *ah, struct ath9k_channel *chan)
+{
+	return false;
+}
+#endif
 
 #endif