diff --git a/drivers/net/wireless/ath9k/hw.c b/drivers/net/wireless/ath9k/hw.c
index 55ed0830588bcae7aa00b9456c421da965f8afb3..ed731b9cac85f2486c9da394d319b4bc2e5fde89 100644
--- a/drivers/net/wireless/ath9k/hw.c
+++ b/drivers/net/wireless/ath9k/hw.c
@@ -1011,7 +1011,7 @@ static void ath9k_hw_init_pll(struct ath_hal *ah,
 				pll |= SM(0xb, AR_RTC_PLL_DIV);
 		}
 	}
-	REG_WRITE(ah, (u16) (AR_RTC_PLL_CONTROL), pll);
+	REG_WRITE(ah, AR_RTC_PLL_CONTROL, pll);
 
 	udelay(RTC_PLL_SETTLE_DELAY);
 
@@ -1550,11 +1550,11 @@ static bool ath9k_hw_set_reset(struct ath_hal *ah, int type)
 			rst_flags |= AR_RTC_RC_MAC_COLD;
 	}
 
-	REG_WRITE(ah, (u16) (AR_RTC_RC), rst_flags);
+	REG_WRITE(ah, AR_RTC_RC, rst_flags);
 	udelay(50);
 
-	REG_WRITE(ah, (u16) (AR_RTC_RC), 0);
-	if (!ath9k_hw_wait(ah, (u16) (AR_RTC_RC), AR_RTC_RC_M, 0)) {
+	REG_WRITE(ah, AR_RTC_RC, 0);
+	if (!ath9k_hw_wait(ah, AR_RTC_RC, AR_RTC_RC_M, 0)) {
 		DPRINTF(ah->ah_sc, ATH_DBG_RESET,
 			"RTC stuck in MAC reset\n");
 		return false;
@@ -1576,8 +1576,8 @@ static bool ath9k_hw_set_reset_power_on(struct ath_hal *ah)
 	REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
 		  AR_RTC_FORCE_WAKE_ON_INT);
 
-	REG_WRITE(ah, (u16) (AR_RTC_RESET), 0);
-	REG_WRITE(ah, (u16) (AR_RTC_RESET), 1);
+	REG_WRITE(ah, AR_RTC_RESET, 0);
+	REG_WRITE(ah, AR_RTC_RESET, 1);
 
 	if (!ath9k_hw_wait(ah,
 			   AR_RTC_STATUS,
@@ -2619,7 +2619,7 @@ static void ath9k_set_power_sleep(struct ath_hal *ah, int setChip)
 		if (!AR_SREV_9100(ah))
 			REG_WRITE(ah, AR_RC, AR_RC_AHB | AR_RC_HOSTIF);
 
-		REG_CLR_BIT(ah, (u16) (AR_RTC_RESET),
+		REG_CLR_BIT(ah, (AR_RTC_RESET),
 			    AR_RTC_RESET_EN);
 	}
 }
diff --git a/drivers/net/wireless/ath9k/reg.h b/drivers/net/wireless/ath9k/reg.h
index 2dffe371ffe418f0e119045ec30e0c0897b6ba36..150eda56055a6273309d512d376f24eea569fb2d 100644
--- a/drivers/net/wireless/ath9k/reg.h
+++ b/drivers/net/wireless/ath9k/reg.h
@@ -953,7 +953,7 @@ enum {
 
 #define AR_RTC_BASE             0x00020000
 #define AR_RTC_RC \
-	(AR_SREV_9100(ah)) ? (AR_RTC_BASE + 0x0000) : 0x7000
+	((AR_SREV_9100(ah)) ? (AR_RTC_BASE + 0x0000) : 0x7000)
 #define AR_RTC_RC_M		0x00000003
 #define AR_RTC_RC_MAC_WARM      0x00000001
 #define AR_RTC_RC_MAC_COLD      0x00000002
@@ -961,7 +961,7 @@ enum {
 #define AR_RTC_RC_WARM_RESET    0x00000008
 
 #define AR_RTC_PLL_CONTROL \
-	(AR_SREV_9100(ah)) ? (AR_RTC_BASE + 0x0014) : 0x7014
+	((AR_SREV_9100(ah)) ? (AR_RTC_BASE + 0x0014) : 0x7014)
 
 #define AR_RTC_PLL_DIV          0x0000001f
 #define AR_RTC_PLL_DIV_S        0