ath9k: Cleanup function return types

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/mac.h b/drivers/net/wireless/ath/ath9k/mac.h
index 1176bce..7b39822 100644
--- a/drivers/net/wireless/ath/ath9k/mac.h
+++ b/drivers/net/wireless/ath/ath9k/mac.h
@@ -628,12 +628,12 @@
 struct ath_rate_table;
 
 u32 ath9k_hw_gettxbuf(struct ath_hw *ah, u32 q);
-bool ath9k_hw_puttxbuf(struct ath_hw *ah, u32 q, u32 txdp);
-bool ath9k_hw_txstart(struct ath_hw *ah, u32 q);
+void ath9k_hw_puttxbuf(struct ath_hw *ah, u32 q, u32 txdp);
+void ath9k_hw_txstart(struct ath_hw *ah, u32 q);
 u32 ath9k_hw_numtxpending(struct ath_hw *ah, u32 q);
 bool ath9k_hw_updatetxtriglevel(struct ath_hw *ah, bool bIncTrigLevel);
 bool ath9k_hw_stoptxdma(struct ath_hw *ah, u32 q);
-bool ath9k_hw_filltxdesc(struct ath_hw *ah, struct ath_desc *ds,
+void ath9k_hw_filltxdesc(struct ath_hw *ah, struct ath_desc *ds,
 			 u32 segLen, bool firstSeg,
 			 bool lastSeg, const struct ath_desc *ds0);
 void ath9k_hw_cleartxdesc(struct ath_hw *ah, struct ath_desc *ds);
@@ -668,7 +668,7 @@
 bool ath9k_hw_resettxqueue(struct ath_hw *ah, u32 q);
 int ath9k_hw_rxprocdesc(struct ath_hw *ah, struct ath_desc *ds,
 			u32 pa, struct ath_desc *nds, u64 tsf);
-bool ath9k_hw_setuprxdesc(struct ath_hw *ah, struct ath_desc *ds,
+void ath9k_hw_setuprxdesc(struct ath_hw *ah, struct ath_desc *ds,
 			  u32 size, u32 flags);
 bool ath9k_hw_setrxabort(struct ath_hw *ah, bool set);
 void ath9k_hw_putrxbuf(struct ath_hw *ah, u32 rxdp);