diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 7c3a98b..dd54fa7 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -329,6 +329,12 @@
 	if (sc->sc_flags & SC_OP_SCANNING)
 		goto set_timer;
 
+	/* Only calibrate if awake */
+	if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE)
+		goto set_timer;
+
+	ath9k_ps_wakeup(sc);
+
 	/* Long calibration runs independently of short calibration. */
 	if ((timestamp - sc->ani.longcal_timer) >= ATH_LONG_CALINTERVAL) {
 		longcal = true;
@@ -380,6 +386,8 @@
 		}
 	}
 
+	ath9k_ps_restore(sc);
+
 set_timer:
 	/*
 	* Set timer interval based on previous results.