1 files changed, 14 insertions, 11 deletions

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 8d291ccf5c8..3384ca16456 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -610,7 +610,6 @@ static int __ath9k_hw_init(struct ath_hw *ah)
         else
                 ah->tx_trig_level = (AR_FTRIG_512B >> AR_FTRIG_S);
 
-        ath9k_init_nfcal_hist_buffer(ah);
         ah->bb_watchdog_timeout_ms = 25;
 
         common->state = ATH_HW_INITIALIZED;
@@ -1183,9 +1182,6 @@ static bool ath9k_hw_channel_change(struct ath_hw *ah,
 
         ath9k_hw_spur_mitigate_freq(ah, chan);
 
-        if (!chan->oneTimeCalsDone)
-                chan->oneTimeCalsDone = true;
-
         return true;
 }
 
@@ -1218,7 +1214,7 @@ bool ath9k_hw_check_alive(struct ath_hw *ah)
 EXPORT_SYMBOL(ath9k_hw_check_alive);
 
 int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
-                    bool bChannelChange)
+                   struct ath9k_hw_cal_data *caldata, bool bChannelChange)
 {
         struct ath_common *common = ath9k_hw_common(ah);
         u32 saveLedState;
@@ -1243,9 +1239,19 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
         if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
                 return -EIO;
 
-        if (curchan && !ah->chip_fullsleep)
+        if (curchan && !ah->chip_fullsleep && ah->caldata)
                 ath9k_hw_getnf(ah, curchan);
 
+        ah->caldata = caldata;
+        if (caldata &&
+            (chan->channel != caldata->channel ||
+             (chan->channelFlags & ~CHANNEL_CW_INT) !=
+             (caldata->channelFlags & ~CHANNEL_CW_INT))) {
+                /* Operating channel changed, reset channel calibration data */
+                memset(caldata, 0, sizeof(*caldata));
+                ath9k_init_nfcal_hist_buffer(ah, chan);
+        }
+
         if (bChannelChange &&
             (ah->chip_fullsleep != true) &&
             (ah->curchan != NULL) &&
@@ -1256,7 +1262,7 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
 
                 if (ath9k_hw_channel_change(ah, chan)) {
                         ath9k_hw_loadnf(ah, ah->curchan);
-                        ath9k_hw_start_nfcal(ah);
+                        ath9k_hw_start_nfcal(ah, true);
                         return 0;
                 }
         }
@@ -1461,11 +1467,8 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
         if (ah->btcoex_hw.enabled)
                 ath9k_hw_btcoex_enable(ah);
 
-        if (AR_SREV_9300_20_OR_LATER(ah)) {
-                ath9k_hw_loadnf(ah, curchan);
-                ath9k_hw_start_nfcal(ah);
+        if (AR_SREV_9300_20_OR_LATER(ah))
                 ar9003_hw_bb_watchdog_config(ah);
-        }
 
         return 0;
 }