diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 3caa32316e7b..2f3f766cc19b 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -269,6 +269,7 @@ static void ath_paprd_activate(struct ath_softc *sc)
 {
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath9k_hw_cal_data *caldata = ah->caldata;
+	struct ath_common *common = ath9k_hw_common(ah);
 	int chain;
 
 	if (!caldata || !caldata->paprd_done)
@@ -277,7 +278,7 @@ static void ath_paprd_activate(struct ath_softc *sc)
 	ath9k_ps_wakeup(sc);
 	ar9003_paprd_enable(ah, false);
 	for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
-		if (!(ah->caps.tx_chainmask & BIT(chain)))
+		if (!(common->tx_chainmask & BIT(chain)))
 			continue;
 
 		ar9003_paprd_populate_single_table(ah, caldata, chain);
@@ -299,6 +300,7 @@ void ath_paprd_calibrate(struct work_struct *work)
 	struct ieee80211_supported_band *sband = &sc->sbands[band];
 	struct ath_tx_control txctl;
 	struct ath9k_hw_cal_data *caldata = ah->caldata;
+	struct ath_common *common = ath9k_hw_common(ah);
 	int qnum, ftype;
 	int chain_ok = 0;
 	int chain;
@@ -332,7 +334,7 @@ void ath_paprd_calibrate(struct work_struct *work)
 	ath9k_ps_wakeup(sc);
 	ar9003_paprd_init_table(ah);
 	for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
-		if (!(ah->caps.tx_chainmask & BIT(chain)))
+		if (!(common->tx_chainmask & BIT(chain)))
 			continue;
 
 		chain_ok = 0;