diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 20bf4a7f896dcae0674b1921faa020d3fef2a545..b37eb592b5246ba6fcf3b5a36d72bb45f58f570a 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -559,6 +559,7 @@ struct ath_softc {
 	spinlock_t sc_resetlock;
 	spinlock_t sc_serial_rw;
 	spinlock_t ani_lock;
+	spinlock_t sc_pm_lock;
 	struct mutex mutex;
 
 	u8 curbssid[ETH_ALEN];
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index a115c8ceabe378f2aac8ecff72f13cc75383cc96..6740a6b98a622c3ec4adc22d4088ba8555dd0c69 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -2728,7 +2728,8 @@ static bool ath9k_hw_set_power_awake(struct ath_hw *ah, int setChip)
 	return true;
 }
 
-bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
+static bool ath9k_hw_setpower_nolock(struct ath_hw *ah,
+				     enum ath9k_power_mode mode)
 {
 	int status = true, setChip = true;
 	static const char *modes[] = {
@@ -2762,6 +2763,18 @@ bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
 	return status;
 }
 
+bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
+{
+	unsigned long flags;
+	bool ret;
+
+	spin_lock_irqsave(&ah->ah_sc->sc_pm_lock, flags);
+	ret = ath9k_hw_setpower_nolock(ah, mode);
+	spin_unlock_irqrestore(&ah->ah_sc->sc_pm_lock, flags);
+
+	return ret;
+}
+
 /*
  * Helper for ASPM support.
  *
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 90cecce8d5ffebf2a96fe065f8b6ab8af3ae0dba..d14f8c9cef684b669b3b171bf632318c9adc60b3 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1316,6 +1316,7 @@ static int ath_init(u16 devid, struct ath_softc *sc)
 	spin_lock_init(&sc->sc_resetlock);
 	spin_lock_init(&sc->sc_serial_rw);
 	spin_lock_init(&sc->ani_lock);
+	spin_lock_init(&sc->sc_pm_lock);
 	mutex_init(&sc->mutex);
 	tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc);
 	tasklet_init(&sc->bcon_tasklet, ath_beacon_tasklet,