ath9k: merge an interrupt processing fix for AR5008-AR9002

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 39053

package/kernel/mac80211/patches/300-pending_work.patch

@@ -11455,3 +11455,81 @@
 +};
 +
 +#endif /* INITVALS_9003_BUFFALO_H */
+--- a/drivers/net/wireless/ath/ath9k/ar9002_mac.c
++++ b/drivers/net/wireless/ath/ath9k/ar9002_mac.c
+@@ -76,9 +76,16 @@ static bool ar9002_hw_get_isr(struct ath
+ 				mask2 |= ATH9K_INT_CST;
+ 			if (isr2 & AR_ISR_S2_TSFOOR)
+ 				mask2 |= ATH9K_INT_TSFOOR;
++
++			if (!(pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)) {
++				REG_WRITE(ah, AR_ISR_S2, isr2);
++				isr &= ~AR_ISR_BCNMISC;
++			}
+ 		}
+ 
+-		isr = REG_READ(ah, AR_ISR_RAC);
++		if (pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)
++			isr = REG_READ(ah, AR_ISR_RAC);
++
+ 		if (isr == 0xffffffff) {
+ 			*masked = 0;
+ 			return false;
+@@ -97,11 +104,23 @@ static bool ar9002_hw_get_isr(struct ath
+ 
+ 			*masked |= ATH9K_INT_TX;
+ 
+-			s0_s = REG_READ(ah, AR_ISR_S0_S);
++			if (pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED) {
++				s0_s = REG_READ(ah, AR_ISR_S0_S);
++				s1_s = REG_READ(ah, AR_ISR_S1_S);
++			} else {
++				s0_s = REG_READ(ah, AR_ISR_S0);
++				REG_WRITE(ah, AR_ISR_S0, s0_s);
++				s1_s = REG_READ(ah, AR_ISR_S1);
++				REG_WRITE(ah, AR_ISR_S1, s1_s);
++
++				isr &= ~(AR_ISR_TXOK |
++					 AR_ISR_TXDESC |
++					 AR_ISR_TXERR |
++					 AR_ISR_TXEOL);
++			}
++
+ 			ah->intr_txqs |= MS(s0_s, AR_ISR_S0_QCU_TXOK);
+ 			ah->intr_txqs |= MS(s0_s, AR_ISR_S0_QCU_TXDESC);
+-
+-			s1_s = REG_READ(ah, AR_ISR_S1_S);
+ 			ah->intr_txqs |= MS(s1_s, AR_ISR_S1_QCU_TXERR);
+ 			ah->intr_txqs |= MS(s1_s, AR_ISR_S1_QCU_TXEOL);
+ 		}
+@@ -120,7 +139,12 @@ static bool ar9002_hw_get_isr(struct ath
+ 	if (isr & AR_ISR_GENTMR) {
+ 		u32 s5_s;
+ 
+-		s5_s = REG_READ(ah, AR_ISR_S5_S);
++		if (pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED) {
++			s5_s = REG_READ(ah, AR_ISR_S5_S);
++		} else {
++			s5_s = REG_READ(ah, AR_ISR_S5);
++		}
++
+ 		ah->intr_gen_timer_trigger =
+ 				MS(s5_s, AR_ISR_S5_GENTIMER_TRIG);
+ 
+@@ -133,6 +157,16 @@ static bool ar9002_hw_get_isr(struct ath
+ 		if ((s5_s & AR_ISR_S5_TIM_TIMER) &&
+ 		    !(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
+ 			*masked |= ATH9K_INT_TIM_TIMER;
++
++		if (!(pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)) {
++			REG_WRITE(ah, AR_ISR_S5, s5_s);
++			isr &= ~AR_ISR_GENTMR;
++		}
++	}
++
++	if (!(pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)) {
++		REG_WRITE(ah, AR_ISR, isr);
++		REG_READ(ah, AR_ISR);
+ 	}
+ 
+ 	if (sync_cause) {