ath9k_hw: Fix ASPM L1 issue for AR9480

Because of not clearing Bit 14 of AR_WA, the ASPM L1 is not
enabled when entering into sleep mode. AR9480 does not need
bit 14 to be set.

Cc: stable@kernel.org
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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

@@ -541,6 +541,9 @@ static int __ath9k_hw_init(struct ath_hw *ah)
 		return -EIO;
 	}
 
+	if (AR_SREV_9480(ah))
+		ah->WARegVal &= ~AR_WA_D3_L1_DISABLE;
+
 	ath9k_hw_init_defaults(ah);
 	ath9k_hw_init_config(ah);
 
@@ -1776,8 +1779,7 @@ static void ath9k_set_power_sleep(struct ath_hw *ah, int setChip)
 	}
 
 	/* Clear Bit 14 of AR_WA after putting chip into Full Sleep mode. */
-	if (!AR_SREV_9480(ah))
-		REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
+	REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
 }
 
 /*