---- a/drivers/net/wireless/ath/ath9k/link.c
-+++ b/drivers/net/wireless/ath/ath9k/link.c
-@@ -308,6 +308,11 @@ void ath_ani_calibrate(unsigned long dat
- unsigned int timestamp = jiffies_to_msecs(jiffies);
- u32 cal_interval, short_cal_interval, long_cal_interval;
- unsigned long flags;
-+ char buf[256];
-+
-+ /* gather entropy */
-+ ath9k_hw_get_adc_entropy(ah, buf, sizeof(buf));
-+ add_device_randomness(buf, sizeof(buf));
-
- if (ah->caldata && test_bit(NFCAL_INTF, &ah->caldata->cal_flags))
- long_cal_interval = ATH_LONG_CALINTERVAL_INT;