ath9k: Clarify Interrupt mitigation

ath9k currently supports only RX interrupt
mitigation.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/hw.c

@@ -368,7 +368,7 @@ static void ath9k_hw_init_config(struct ath_hw *ah)
 		ah->config.spurchans[i][1] = AR_NO_SPUR;
 	}
 
-	ah->config.intr_mitigation = true;
+	ah->config.rx_intr_mitigation = true;
 
 	/*
 	 * We need this for PCI devices only (Cardbus, PCI, miniPCI)
@@ -1160,7 +1160,7 @@ static void ath9k_hw_init_interrupt_masks(struct ath_hw *ah,
 		AR_IMR_RXORN |
 		AR_IMR_BCNMISC;
 
-	if (ah->config.intr_mitigation)
+	if (ah->config.rx_intr_mitigation)
 		ah->mask_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
 	else
 		ah->mask_reg |= AR_IMR_RXOK;
@@ -2091,7 +2091,7 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
 
 	REG_WRITE(ah, AR_OBS, 8);
 
-	if (ah->config.intr_mitigation) {
+	if (ah->config.rx_intr_mitigation) {
 		REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_LAST, 500);
 		REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_FIRST, 2000);
 	}
@@ -2751,7 +2751,7 @@ bool ath9k_hw_getisr(struct ath_hw *ah, enum ath9k_int *masked)
 
 		*masked = isr & ATH9K_INT_COMMON;
 
-		if (ah->config.intr_mitigation) {
+		if (ah->config.rx_intr_mitigation) {
 			if (isr & (AR_ISR_RXMINTR | AR_ISR_RXINTM))
 				*masked |= ATH9K_INT_RX;
 		}
@@ -2884,7 +2884,7 @@ enum ath9k_int ath9k_hw_set_interrupts(struct ath_hw *ah, enum ath9k_int ints)
 	}
 	if (ints & ATH9K_INT_RX) {
 		mask |= AR_IMR_RXERR;
-		if (ah->config.intr_mitigation)
+		if (ah->config.rx_intr_mitigation)
 			mask |= AR_IMR_RXMINTR | AR_IMR_RXINTM;
 		else
 			mask |= AR_IMR_RXOK | AR_IMR_RXDESC;

drivers/net/wireless/ath/ath9k/hw.h

@@ -212,7 +212,7 @@ struct ath9k_ops_config {
 	u32 cck_trig_low;
 	u32 enable_ani;
 	int serialize_regmode;
-	bool intr_mitigation;
+	bool rx_intr_mitigation;
 #define SPUR_DISABLE        	0
 #define SPUR_ENABLE_IOCTL   	1
 #define SPUR_ENABLE_EEPROM  	2