ath9k_hw: take care of enabling MCI interrupts

enable MCI interrupt when ath9k_hw_enable_interrupts is called,
like during the completion of chip_reset before which the interrupts
are disabled

Cc: Wilson Tsao <wtsao@qca.qualcomm.com>
Cc: Senthil Balasubramanian <senthilb@qca.qualcomm.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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

@@ -798,6 +798,7 @@ void ath9k_hw_enable_interrupts(struct ath_hw *ah)
 {
 	struct ath_common *common = ath9k_hw_common(ah);
 	u32 sync_default = AR_INTR_SYNC_DEFAULT;
+	u32 async_mask;
 
 	if (!(ah->imask & ATH9K_INT_GLOBAL))
 		return;
@@ -812,13 +813,16 @@ void ath9k_hw_enable_interrupts(struct ath_hw *ah)
 	if (AR_SREV_9340(ah))
 		sync_default &= ~AR_INTR_SYNC_HOST1_FATAL;
 
+	async_mask = AR_INTR_MAC_IRQ;
+
+	if (ah->imask & ATH9K_INT_MCI)
+		async_mask |= AR_INTR_ASYNC_MASK_MCI;
+
 	ath_dbg(common, ATH_DBG_INTERRUPT, "enable IER\n");
 	REG_WRITE(ah, AR_IER, AR_IER_ENABLE);
 	if (!AR_SREV_9100(ah)) {
-		REG_WRITE(ah, AR_INTR_ASYNC_ENABLE,
-			  AR_INTR_MAC_IRQ);
-		REG_WRITE(ah, AR_INTR_ASYNC_MASK, AR_INTR_MAC_IRQ);
-
+		REG_WRITE(ah, AR_INTR_ASYNC_ENABLE, async_mask);
+		REG_WRITE(ah, AR_INTR_ASYNC_MASK, async_mask);
 
 		REG_WRITE(ah, AR_INTR_SYNC_ENABLE, sync_default);
 		REG_WRITE(ah, AR_INTR_SYNC_MASK, sync_default);