openwrt/package/mac80211/patches/520-pending_work.patch

--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -103,11 +103,13 @@ int ieee80211_hw_config(struct ieee80211
 	int ret = 0;
 	int power;
 	enum nl80211_channel_type channel_type;
+	u32 offchannel_flag;
 
 	might_sleep();
 
 	scan_chan = local->scan_channel;
 
+	offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
 	if (scan_chan) {
 		chan = scan_chan;
 		channel_type = NL80211_CHAN_NO_HT;
@@ -121,8 +123,9 @@ int ieee80211_hw_config(struct ieee80211
 		channel_type = local->_oper_channel_type;
 		local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
 	}
+	offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
 
-	if (chan != local->hw.conf.channel ||
+	if (offchannel_flag || chan != local->hw.conf.channel ||
 	    channel_type != local->hw.conf.channel_type) {
 		local->hw.conf.channel = chan;
 		local->hw.conf.channel_type = channel_type;
--- a/drivers/net/wireless/ath/ath9k/ar9002_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9002_calib.c
@@ -63,6 +63,7 @@ static bool ar9002_hw_per_calibration(st
 				      u8 rxchainmask,
 				      struct ath9k_cal_list *currCal)
 {
+	struct ath9k_hw_cal_data *caldata = ah->caldata;
 	bool iscaldone = false;
 
 	if (currCal->calState == CAL_RUNNING) {
@@ -81,14 +82,14 @@ static bool ar9002_hw_per_calibration(st
 				}
 
 				currCal->calData->calPostProc(ah, numChains);
-				ichan->CalValid |= currCal->calData->calType;
+				caldata->CalValid |= currCal->calData->calType;
 				currCal->calState = CAL_DONE;
 				iscaldone = true;
 			} else {
 				ar9002_hw_setup_calibration(ah, currCal);
 			}
 		}
-	} else if (!(ichan->CalValid & currCal->calData->calType)) {
+	} else if (!(caldata->CalValid & currCal->calData->calType)) {
 		ath9k_hw_reset_calibration(ah, currCal);
 	}
 
@@ -686,8 +687,13 @@ static bool ar9002_hw_calibrate(struct a
 {
 	bool iscaldone = true;
 	struct ath9k_cal_list *currCal = ah->cal_list_curr;
+	bool nfcal, nfcal_pending = false;
 
-	if (currCal &&
+	nfcal = !!(REG_READ(ah, AR_PHY_AGC_CONTROL) & AR_PHY_AGC_CONTROL_NF);
+	if (ah->caldata)
+		nfcal_pending = ah->caldata->nfcal_pending;
+
+	if (currCal && !nfcal &&
 	    (currCal->calState == CAL_RUNNING ||
 	     currCal->calState == CAL_WAITING)) {
 		iscaldone = ar9002_hw_per_calibration(ah, chan,
@@ -703,7 +709,7 @@ static bool ar9002_hw_calibrate(struct a
 	}
 
 	/* Do NF cal only at longer intervals */
-	if (longcal) {
+	if (longcal || nfcal_pending) {
 		/* Do periodic PAOffset Cal */
 		ar9002_hw_pa_cal(ah, false);
 		ar9002_hw_olc_temp_compensation(ah);
@@ -712,16 +718,18 @@ static bool ar9002_hw_calibrate(struct a
 		 * Get the value from the previous NF cal and update
 		 * history buffer.
 		 */
-		ath9k_hw_getnf(ah, chan);
-
-		/*
-		 * Load the NF from history buffer of the current channel.
-		 * NF is slow time-variant, so it is OK to use a historical
-		 * value.
-		 */
-		ath9k_hw_loadnf(ah, ah->curchan);
+		if (ath9k_hw_getnf(ah, chan)) {
+			/*
+			 * Load the NF from history buffer of the current
+			 * channel.
+			 * NF is slow time-variant, so it is OK to use a
+			 * historical value.
+			 */
+			ath9k_hw_loadnf(ah, ah->curchan);
+		}
 
-		ath9k_hw_start_nfcal(ah);
+		if (longcal)
+			ath9k_hw_start_nfcal(ah, false);
 	}
 
 	return iscaldone;
@@ -869,8 +877,10 @@ static bool ar9002_hw_init_cal(struct at
 	ar9002_hw_pa_cal(ah, true);
 
 	/* Do NF Calibration after DC offset and other calibrations */
-	REG_WRITE(ah, AR_PHY_AGC_CONTROL,
-		  REG_READ(ah, AR_PHY_AGC_CONTROL) | AR_PHY_AGC_CONTROL_NF);
+	ath9k_hw_start_nfcal(ah, true);
+
+	if (ah->caldata)
+		ah->caldata->nfcal_pending = true;
 
 	ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
 
@@ -901,7 +911,8 @@ static bool ar9002_hw_init_cal(struct at
 			ath9k_hw_reset_calibration(ah, ah->cal_list_curr);
 	}
 
-	chan->CalValid = 0;
+	if (ah->caldata)
+		ah->caldata->CalValid = 0;
 
 	return true;
 }
--- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
@@ -68,6 +68,7 @@ static bool ar9003_hw_per_calibration(st
 				      u8 rxchainmask,
 				      struct ath9k_cal_list *currCal)
 {
+	struct ath9k_hw_cal_data *caldata = ah->caldata;
 	/* Cal is assumed not done until explicitly set below */
 	bool iscaldone = false;
 
@@ -95,7 +96,7 @@ static bool ar9003_hw_per_calibration(st
 				currCal->calData->calPostProc(ah, numChains);
 
 				/* Calibration has finished. */
-				ichan->CalValid |= currCal->calData->calType;
+				caldata->CalValid |= currCal->calData->calType;
 				currCal->calState = CAL_DONE;
 				iscaldone = true;
 			} else {
@@ -106,7 +107,7 @@ static bool ar9003_hw_per_calibration(st
 			ar9003_hw_setup_calibration(ah, currCal);
 			}
 		}
-	} else if (!(ichan->CalValid & currCal->calData->calType)) {
+	} else if (!(caldata->CalValid & currCal->calData->calType)) {
 		/* If current cal is marked invalid in channel, kick it off */
 		ath9k_hw_reset_calibration(ah, currCal);
 	}
@@ -149,6 +150,12 @@ static bool ar9003_hw_calibrate(struct a
 	/* Do NF cal only at longer intervals */
 	if (longcal) {
 		/*
+		 * Get the value from the previous NF cal and update
+		 * history buffer.
+		 */
+		ath9k_hw_getnf(ah, chan);
+
+		/*
 		 * Load the NF from history buffer of the current channel.
 		 * NF is slow time-variant, so it is OK to use a historical
 		 * value.
@@ -156,7 +163,7 @@ static bool ar9003_hw_calibrate(struct a
 		ath9k_hw_loadnf(ah, ah->curchan);
 
 		/* start NF calibration, without updating BB NF register */
-		ath9k_hw_start_nfcal(ah);
+		ath9k_hw_start_nfcal(ah, false);
 	}
 
 	return iscaldone;
@@ -762,6 +769,8 @@ static bool ar9003_hw_init_cal(struct at
 	/* Revert chainmasks to their original values before NF cal */
 	ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
 
+	ath9k_hw_start_nfcal(ah, true);
+
 	/* Initialize list pointers */
 	ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
 
@@ -785,7 +794,8 @@ static bool ar9003_hw_init_cal(struct at
 	if (ah->cal_list_curr)
 		ath9k_hw_reset_calibration(ah, ah->cal_list_curr);
 
-	chan->CalValid = 0;
+	if (ah->caldata)
+		ah->caldata->CalValid = 0;
 
 	return true;
 }
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
@@ -542,7 +542,11 @@ static void ar9003_hw_prog_ini(struct at
 		u32 reg = INI_RA(iniArr, i, 0);
 		u32 val = INI_RA(iniArr, i, column);
 
-		REG_WRITE(ah, reg, val);
+		if (reg >= 0x16000 && reg < 0x17000)
+			ath9k_hw_analog_shift_regwrite(ah, reg, val);
+		else
+			REG_WRITE(ah, reg, val);
+
 		DO_DELAY(regWrites);
 	}
 }
--- a/drivers/net/wireless/ath/ath9k/calib.c
+++ b/drivers/net/wireless/ath/ath9k/calib.c
@@ -22,23 +22,6 @@
 /* We can tune this as we go by monitoring really low values */
 #define ATH9K_NF_TOO_LOW	-60
 
-/* AR5416 may return very high value (like -31 dBm), in those cases the nf
- * is incorrect and we should use the static NF value. Later we can try to
- * find out why they are reporting these values */
-
-static bool ath9k_hw_nf_in_range(struct ath_hw *ah, s16 nf)
-{
-	if (nf > ATH9K_NF_TOO_LOW) {
-		ath_print(ath9k_hw_common(ah), ATH_DBG_CALIBRATE,
-			  "noise floor value detected (%d) is "
-			  "lower than what we think is a "
-			  "reasonable value (%d)\n",
-			  nf, ATH9K_NF_TOO_LOW);
-		return false;
-	}
-	return true;
-}
-
 static int16_t ath9k_hw_get_nf_hist_mid(int16_t *nfCalBuffer)
 {
 	int16_t nfval;
@@ -121,6 +104,19 @@ void ath9k_hw_reset_calibration(struct a
 	ah->cal_samples = 0;
 }
 
+static s16 ath9k_hw_get_default_nf(struct ath_hw *ah,
+				   struct ath9k_channel *chan)
+{
+	struct ath_nf_limits *limit;
+
+	if (!chan || IS_CHAN_2GHZ(chan))
+		limit = &ah->nf_2g;
+	else
+		limit = &ah->nf_5g;
+
+	return limit->nominal;
+}
+
 /* This is done for the currently configured channel */
 bool ath9k_hw_reset_calvalid(struct ath_hw *ah)
 {
@@ -128,7 +124,7 @@ bool ath9k_hw_reset_calvalid(struct ath_
 	struct ieee80211_conf *conf = &common->hw->conf;
 	struct ath9k_cal_list *currCal = ah->cal_list_curr;
 
-	if (!ah->curchan)
+	if (!ah->caldata)
 		return true;
 
 	if (!AR_SREV_9100(ah) && !AR_SREV_9160_10_OR_LATER(ah))
@@ -151,37 +147,55 @@ bool ath9k_hw_reset_calvalid(struct ath_
 		  "Resetting Cal %d state for channel %u\n",
 		  currCal->calData->calType, conf->channel->center_freq);
 
-	ah->curchan->CalValid &= ~currCal->calData->calType;
+	ah->caldata->CalValid &= ~currCal->calData->calType;
 	currCal->calState = CAL_WAITING;
 
 	return false;
 }
 EXPORT_SYMBOL(ath9k_hw_reset_calvalid);
 
-void ath9k_hw_start_nfcal(struct ath_hw *ah)
+void ath9k_hw_start_nfcal(struct ath_hw *ah, bool update)
 {
+	if (ah->caldata)
+		ah->caldata->nfcal_pending = true;
+
 	REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
 		    AR_PHY_AGC_CONTROL_ENABLE_NF);
-	REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
+
+	if (update)
+		REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
+		    AR_PHY_AGC_CONTROL_NO_UPDATE_NF);
+	else
+		REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
 		    AR_PHY_AGC_CONTROL_NO_UPDATE_NF);
+
 	REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF);
 }
 
 void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan)
 {
-	struct ath9k_nfcal_hist *h;
+	struct ath9k_nfcal_hist *h = NULL;
 	unsigned i, j;
 	int32_t val;
 	u8 chainmask = (ah->rxchainmask << 3) | ah->rxchainmask;
 	struct ath_common *common = ath9k_hw_common(ah);
+	s16 default_nf = ath9k_hw_get_default_nf(ah, chan);
 
-	h = ah->nfCalHist;
+	if (ah->caldata)
+		h = ah->caldata->nfCalHist;
 
 	for (i = 0; i < NUM_NF_READINGS; i++) {
 		if (chainmask & (1 << i)) {
+			s16 nfval;
+
+			if (h)
+				nfval = h[i].privNF;
+			else
+				nfval = default_nf;
+
 			val = REG_READ(ah, ah->nf_regs[i]);
 			val &= 0xFFFFFE00;
-			val |= (((u32) (h[i].privNF) << 1) & 0x1ff);
+			val |= (((u32) nfval << 1) & 0x1ff);
 			REG_WRITE(ah, ah->nf_regs[i], val);
 		}
 	}
@@ -277,22 +291,25 @@ static void ath9k_hw_nf_sanitize(struct 
 	}
 }
 
-int16_t ath9k_hw_getnf(struct ath_hw *ah,
-		       struct ath9k_channel *chan)
+bool ath9k_hw_getnf(struct ath_hw *ah, struct ath9k_channel *chan)
 {
 	struct ath_common *common = ath9k_hw_common(ah);
 	int16_t nf, nfThresh;
 	int16_t nfarray[NUM_NF_READINGS] = { 0 };
 	struct ath9k_nfcal_hist *h;
 	struct ieee80211_channel *c = chan->chan;
+	struct ath9k_hw_cal_data *caldata = ah->caldata;
+
+	if (!caldata)
+		return false;
 
 	chan->channelFlags &= (~CHANNEL_CW_INT);
 	if (REG_READ(ah, AR_PHY_AGC_CONTROL) & AR_PHY_AGC_CONTROL_NF) {
 		ath_print(common, ATH_DBG_CALIBRATE,
 			  "NF did not complete in calibration window\n");
 		nf = 0;
-		chan->rawNoiseFloor = nf;
-		return chan->rawNoiseFloor;
+		caldata->rawNoiseFloor = nf;
+		return false;
 	} else {
 		ath9k_hw_do_getnf(ah, nfarray);
 		ath9k_hw_nf_sanitize(ah, nfarray);
@@ -307,47 +324,40 @@ int16_t ath9k_hw_getnf(struct ath_hw *ah
 		}
 	}
 
-	h = ah->nfCalHist;
-
+	h = caldata->nfCalHist;
+	caldata->nfcal_pending = false;
 	ath9k_hw_update_nfcal_hist_buffer(h, nfarray);
-	chan->rawNoiseFloor = h[0].privNF;
-
-	return chan->rawNoiseFloor;
+	caldata->rawNoiseFloor = h[0].privNF;
+	return true;
 }
 
-void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah)
+void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah,
+				  struct ath9k_channel *chan)
 {
-	struct ath_nf_limits *limit;
+	struct ath9k_nfcal_hist *h;
+	s16 default_nf;
 	int i, j;
 
-	if (!ah->curchan || IS_CHAN_2GHZ(ah->curchan))
-		limit = &ah->nf_2g;
-	else
-		limit = &ah->nf_5g;
+	if (!ah->caldata)
+		return;
 
+	h = ah->caldata->nfCalHist;
+	default_nf = ath9k_hw_get_default_nf(ah, chan);
 	for (i = 0; i < NUM_NF_READINGS; i++) {
-		ah->nfCalHist[i].currIndex = 0;
-		ah->nfCalHist[i].privNF = limit->nominal;
-		ah->nfCalHist[i].invalidNFcount =
-			AR_PHY_CCA_FILTERWINDOW_LENGTH;
+		h[i].currIndex = 0;
+		h[i].privNF = default_nf;
+		h[i].invalidNFcount = AR_PHY_CCA_FILTERWINDOW_LENGTH;
 		for (j = 0; j < ATH9K_NF_CAL_HIST_MAX; j++) {
-			ah->nfCalHist[i].nfCalBuffer[j] = limit->nominal;
+			h[i].nfCalBuffer[j] = default_nf;
 		}
 	}
 }
 
 s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan)
 {
-	s16 nf;
-
-	if (chan->rawNoiseFloor == 0)
-		nf = -96;
-	else
-		nf = chan->rawNoiseFloor;
-
-	if (!ath9k_hw_nf_in_range(ah, nf))
-		nf = ATH_DEFAULT_NOISE_FLOOR;
+	if (!ah->caldata || !ah->caldata->rawNoiseFloor)
+		return ath9k_hw_get_default_nf(ah, chan);
 
-	return nf;
+	return ah->caldata->rawNoiseFloor;
 }
 EXPORT_SYMBOL(ath9k_hw_getchan_noise);
--- a/drivers/net/wireless/ath/ath9k/calib.h
+++ b/drivers/net/wireless/ath/ath9k/calib.h
@@ -108,11 +108,11 @@ struct ath9k_pacal_info{
 };
 
 bool ath9k_hw_reset_calvalid(struct ath_hw *ah);
-void ath9k_hw_start_nfcal(struct ath_hw *ah);
+void ath9k_hw_start_nfcal(struct ath_hw *ah, bool update);
 void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan);
-int16_t ath9k_hw_getnf(struct ath_hw *ah,
-		       struct ath9k_channel *chan);
-void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah);
+bool ath9k_hw_getnf(struct ath_hw *ah, struct ath9k_channel *chan);
+void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah,
+				  struct ath9k_channel *chan);
 s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan);
 void ath9k_hw_reset_calibration(struct ath_hw *ah,
 				struct ath9k_cal_list *currCal);
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -622,7 +622,6 @@ static int __ath9k_hw_init(struct ath_hw
 	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;
@@ -1195,9 +1194,6 @@ static bool ath9k_hw_channel_change(stru
 
 	ath9k_hw_spur_mitigate_freq(ah, chan);
 
-	if (!chan->oneTimeCalsDone)
-		chan->oneTimeCalsDone = true;
-
 	return true;
 }
 
@@ -1230,7 +1226,7 @@ bool ath9k_hw_check_alive(struct ath_hw 
 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;
@@ -1255,9 +1251,19 @@ int ath9k_hw_reset(struct ath_hw *ah, st
 	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) &&
@@ -1268,7 +1274,7 @@ int ath9k_hw_reset(struct ath_hw *ah, st
 
 		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;
 		}
 	}
@@ -1473,11 +1479,8 @@ int ath9k_hw_reset(struct ath_hw *ah, st
 	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;
 }
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -155,6 +155,27 @@ void ath9k_ps_restore(struct ath_softc *
 	spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
 }
 
+static void ath_start_ani(struct ath_common *common)
+{
+	struct ath_hw *ah = common->ah;
+	unsigned long timestamp = jiffies_to_msecs(jiffies);
+	struct ath_softc *sc = (struct ath_softc *) common->priv;
+
+	if (!(sc->sc_flags & SC_OP_ANI_RUN))
+		return;
+
+	if (sc->sc_flags & SC_OP_OFFCHANNEL)
+		return;
+
+	common->ani.longcal_timer = timestamp;
+	common->ani.shortcal_timer = timestamp;
+	common->ani.checkani_timer = timestamp;
+
+	mod_timer(&common->ani.timer,
+		  jiffies +
+			msecs_to_jiffies((u32)ah->config.ani_poll_interval));
+}
+
 /*
  * Set/change channels.  If the channel is really being changed, it's done
  * by reseting the chip.  To accomplish this we must first cleanup any pending
@@ -163,16 +184,23 @@ void ath9k_ps_restore(struct ath_softc *
 int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
 		    struct ath9k_channel *hchan)
 {
+	struct ath_wiphy *aphy = hw->priv;
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath_common *common = ath9k_hw_common(ah);
 	struct ieee80211_conf *conf = &common->hw->conf;
 	bool fastcc = true, stopped;
 	struct ieee80211_channel *channel = hw->conf.channel;
+	struct ath9k_hw_cal_data *caldata = NULL;
 	int r;
 
 	if (sc->sc_flags & SC_OP_INVALID)
 		return -EIO;
 
+	del_timer_sync(&common->ani.timer);
+	cancel_work_sync(&sc->paprd_work);
+	cancel_work_sync(&sc->hw_check_work);
+	cancel_delayed_work_sync(&sc->tx_complete_work);
+
 	ath9k_ps_wakeup(sc);
 
 	/*
@@ -192,9 +220,12 @@ int ath_set_channel(struct ath_softc *sc
 	 * to flush data frames already in queue because of
 	 * changing channel. */
 
-	if (!stopped || (sc->sc_flags & SC_OP_FULL_RESET))
+	if (!stopped || !(sc->sc_flags & SC_OP_OFFCHANNEL))
 		fastcc = false;
 
+	if (!(sc->sc_flags & SC_OP_OFFCHANNEL))
+		caldata = &aphy->caldata;
+
 	ath_print(common, ATH_DBG_CONFIG,
 		  "(%u MHz) -> (%u MHz), conf_is_ht40: %d\n",
 		  sc->sc_ah->curchan->channel,
@@ -202,7 +233,7 @@ int ath_set_channel(struct ath_softc *sc
 
 	spin_lock_bh(&sc->sc_resetlock);
 
-	r = ath9k_hw_reset(ah, hchan, fastcc);
+	r = ath9k_hw_reset(ah, hchan, caldata, fastcc);
 	if (r) {
 		ath_print(common, ATH_DBG_FATAL,
 			  "Unable to reset channel (%u MHz), "
@@ -213,8 +244,6 @@ int ath_set_channel(struct ath_softc *sc
 	}
 	spin_unlock_bh(&sc->sc_resetlock);
 
-	sc->sc_flags &= ~SC_OP_FULL_RESET;
-
 	if (ath_startrecv(sc) != 0) {
 		ath_print(common, ATH_DBG_FATAL,
 			  "Unable to restart recv logic\n");
@@ -226,6 +255,12 @@ int ath_set_channel(struct ath_softc *sc
 	ath_update_txpow(sc);
 	ath9k_hw_set_interrupts(ah, ah->imask);
 
+	if (!(sc->sc_flags & (SC_OP_OFFCHANNEL | SC_OP_SCANNING))) {
+		ath_start_ani(common);
+		ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
+		ath_beacon_config(sc, NULL);
+	}
+
  ps_restore:
 	ath9k_ps_restore(sc);
 	return r;
@@ -234,17 +269,19 @@ int ath_set_channel(struct ath_softc *sc
 static void ath_paprd_activate(struct ath_softc *sc)
 {
 	struct ath_hw *ah = sc->sc_ah;
+	struct ath9k_hw_cal_data *caldata = ah->caldata;
 	int chain;
 
-	if (!ah->curchan->paprd_done)
+	if (!caldata || !caldata->paprd_done)
 		return;
 
 	ath9k_ps_wakeup(sc);
+	ar9003_paprd_enable(ah, false);
 	for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
 		if (!(ah->caps.tx_chainmask & BIT(chain)))
 			continue;
 
-		ar9003_paprd_populate_single_table(ah, ah->curchan, chain);
+		ar9003_paprd_populate_single_table(ah, caldata, chain);
 	}
 
 	ar9003_paprd_enable(ah, true);
@@ -262,6 +299,7 @@ void ath_paprd_calibrate(struct work_str
 	int band = hw->conf.channel->band;
 	struct ieee80211_supported_band *sband = &sc->sbands[band];
 	struct ath_tx_control txctl;
+	struct ath9k_hw_cal_data *caldata = ah->caldata;
 	int qnum, ftype;
 	int chain_ok = 0;
 	int chain;
@@ -269,6 +307,9 @@ void ath_paprd_calibrate(struct work_str
 	int time_left;
 	int i;
 
+	if (!caldata)
+		return;
+
 	skb = alloc_skb(len, GFP_KERNEL);
 	if (!skb)
 		return;
@@ -323,7 +364,7 @@ void ath_paprd_calibrate(struct work_str
 		if (!ar9003_paprd_is_done(ah))
 			break;
 
-		if (ar9003_paprd_create_curve(ah, ah->curchan, chain) != 0)
+		if (ar9003_paprd_create_curve(ah, caldata, chain) != 0)
 			break;
 
 		chain_ok = 1;
@@ -331,7 +372,7 @@ void ath_paprd_calibrate(struct work_str
 	kfree_skb(skb);
 
 	if (chain_ok) {
-		ah->curchan->paprd_done = true;
+		caldata->paprd_done = true;
 		ath_paprd_activate(sc);
 	}
 
@@ -440,33 +481,14 @@ set_timer:
 		cal_interval = min(cal_interval, (u32)short_cal_interval);
 
 	mod_timer(&common->ani.timer, jiffies + msecs_to_jiffies(cal_interval));
-	if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) &&
-	    !(sc->sc_flags & SC_OP_SCANNING)) {
-		if (!sc->sc_ah->curchan->paprd_done)
+	if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) && ah->caldata) {
+		if (!ah->caldata->paprd_done)
 			ieee80211_queue_work(sc->hw, &sc->paprd_work);
 		else
 			ath_paprd_activate(sc);
 	}
 }
 
-static void ath_start_ani(struct ath_common *common)
-{
-	struct ath_hw *ah = common->ah;
-	unsigned long timestamp = jiffies_to_msecs(jiffies);
-	struct ath_softc *sc = (struct ath_softc *) common->priv;
-
-	if (!(sc->sc_flags & SC_OP_ANI_RUN))
-		return;
-
-	common->ani.longcal_timer = timestamp;
-	common->ani.shortcal_timer = timestamp;
-	common->ani.checkani_timer = timestamp;
-
-	mod_timer(&common->ani.timer,
-		  jiffies +
-			msecs_to_jiffies((u32)ah->config.ani_poll_interval));
-}
-
 /*
  * Update tx/rx chainmask. For legacy association,
  * hard code chainmask to 1x1, for 11n association, use
@@ -478,7 +500,7 @@ void ath_update_chainmask(struct ath_sof
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath_common *common = ath9k_hw_common(ah);
 
-	if ((sc->sc_flags & SC_OP_SCANNING) || is_ht ||
+	if ((sc->sc_flags & SC_OP_OFFCHANNEL) || is_ht ||
 	    (ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE)) {
 		common->tx_chainmask = ah->caps.tx_chainmask;
 		common->rx_chainmask = ah->caps.rx_chainmask;
@@ -818,7 +840,7 @@ void ath_radio_enable(struct ath_softc *
 		ah->curchan = ath_get_curchannel(sc, sc->hw);
 
 	spin_lock_bh(&sc->sc_resetlock);
-	r = ath9k_hw_reset(ah, ah->curchan, false);
+	r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
 	if (r) {
 		ath_print(common, ATH_DBG_FATAL,
 			  "Unable to reset channel (%u MHz), "
@@ -878,7 +900,7 @@ void ath_radio_disable(struct ath_softc 
 		ah->curchan = ath_get_curchannel(sc, hw);
 
 	spin_lock_bh(&sc->sc_resetlock);
-	r = ath9k_hw_reset(ah, ah->curchan, false);
+	r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
 	if (r) {
 		ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
 			  "Unable to reset channel (%u MHz), "
@@ -911,7 +933,7 @@ int ath_reset(struct ath_softc *sc, bool
 	ath_flushrecv(sc);
 
 	spin_lock_bh(&sc->sc_resetlock);
-	r = ath9k_hw_reset(ah, sc->sc_ah->curchan, false);
+	r = ath9k_hw_reset(ah, sc->sc_ah->curchan, ah->caldata, false);
 	if (r)
 		ath_print(common, ATH_DBG_FATAL,
 			  "Unable to reset hardware; reset status %d\n", r);
@@ -1086,7 +1108,7 @@ static int ath9k_start(struct ieee80211_
 	 * and then setup of the interrupt mask.
 	 */
 	spin_lock_bh(&sc->sc_resetlock);
-	r = ath9k_hw_reset(ah, init_channel, false);
+	r = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
 	if (r) {
 		ath_print(common, ATH_DBG_FATAL,
 			  "Unable to reset hardware; reset status %d "
@@ -1580,6 +1602,10 @@ static int ath9k_config(struct ieee80211
 
 		aphy->chan_idx = pos;
 		aphy->chan_is_ht = conf_is_ht(conf);
+		if (hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
+			sc->sc_flags |= SC_OP_OFFCHANNEL;
+		else
+			sc->sc_flags &= ~SC_OP_OFFCHANNEL;
 
 		if (aphy->state == ATH_WIPHY_SCAN ||
 		    aphy->state == ATH_WIPHY_ACTIVE)
@@ -1991,7 +2017,6 @@ static void ath9k_sw_scan_start(struct i
 {
 	struct ath_wiphy *aphy = hw->priv;
 	struct ath_softc *sc = aphy->sc;
-	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
 
 	mutex_lock(&sc->mutex);
 	if (ath9k_wiphy_scanning(sc)) {
@@ -2009,10 +2034,6 @@ static void ath9k_sw_scan_start(struct i
 	aphy->state = ATH_WIPHY_SCAN;
 	ath9k_wiphy_pause_all_forced(sc, aphy);
 	sc->sc_flags |= SC_OP_SCANNING;
-	del_timer_sync(&common->ani.timer);
-	cancel_work_sync(&sc->paprd_work);
-	cancel_work_sync(&sc->hw_check_work);
-	cancel_delayed_work_sync(&sc->tx_complete_work);
 	mutex_unlock(&sc->mutex);
 }
 
@@ -2024,15 +2045,10 @@ static void ath9k_sw_scan_complete(struc
 {
 	struct ath_wiphy *aphy = hw->priv;
 	struct ath_softc *sc = aphy->sc;
-	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
 
 	mutex_lock(&sc->mutex);
 	aphy->state = ATH_WIPHY_ACTIVE;
 	sc->sc_flags &= ~SC_OP_SCANNING;
-	sc->sc_flags |= SC_OP_FULL_RESET;
-	ath_start_ani(common);
-	ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
-	ath_beacon_config(sc, NULL);
 	mutex_unlock(&sc->mutex);
 }
 
--- a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
@@ -577,10 +577,11 @@ static bool create_pa_curve(u32 *data_L,
 }
 
 void ar9003_paprd_populate_single_table(struct ath_hw *ah,
-					struct ath9k_channel *chan, int chain)
+					struct ath9k_hw_cal_data *caldata,
+					int chain)
 {
-	u32 *paprd_table_val = chan->pa_table[chain];
-	u32 small_signal_gain = chan->small_signal_gain[chain];
+	u32 *paprd_table_val = caldata->pa_table[chain];
+	u32 small_signal_gain = caldata->small_signal_gain[chain];
 	u32 training_power;
 	u32 reg = 0;
 	int i;
@@ -654,17 +655,17 @@ int ar9003_paprd_setup_gain_table(struct
 }
 EXPORT_SYMBOL(ar9003_paprd_setup_gain_table);
 
-int ar9003_paprd_create_curve(struct ath_hw *ah, struct ath9k_channel *chan,
-			      int chain)
+int ar9003_paprd_create_curve(struct ath_hw *ah,
+			      struct ath9k_hw_cal_data *caldata, int chain)
 {
-	u16 *small_signal_gain = &chan->small_signal_gain[chain];
-	u32 *pa_table = chan->pa_table[chain];
+	u16 *small_signal_gain = &caldata->small_signal_gain[chain];
+	u32 *pa_table = caldata->pa_table[chain];
 	u32 *data_L, *data_U;
 	int i, status = 0;
 	u32 *buf;
 	u32 reg;
 
-	memset(chan->pa_table[chain], 0, sizeof(chan->pa_table[chain]));
+	memset(caldata->pa_table[chain], 0, sizeof(caldata->pa_table[chain]));
 
 	buf = kmalloc(2 * 48 * sizeof(u32), GFP_ATOMIC);
 	if (!buf)
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -511,7 +511,7 @@ void ath_deinit_leds(struct ath_softc *s
 #define SC_OP_BEACONS                BIT(1)
 #define SC_OP_RXAGGR                 BIT(2)
 #define SC_OP_TXAGGR                 BIT(3)
-#define SC_OP_FULL_RESET             BIT(4)
+#define SC_OP_OFFCHANNEL             BIT(4)
 #define SC_OP_PREAMBLE_SHORT         BIT(5)
 #define SC_OP_PROTECT_ENABLE         BIT(6)
 #define SC_OP_RXFLUSH                BIT(7)
@@ -612,6 +612,7 @@ struct ath_softc {
 struct ath_wiphy {
 	struct ath_softc *sc; /* shared for all virtual wiphys */
 	struct ieee80211_hw *hw;
+	struct ath9k_hw_cal_data caldata;
 	enum ath_wiphy_state {
 		ATH_WIPHY_INACTIVE,
 		ATH_WIPHY_ACTIVE,
--- a/drivers/net/wireless/ath/ath9k/htc.h
+++ b/drivers/net/wireless/ath/ath9k/htc.h
@@ -353,6 +353,8 @@ struct ath9k_htc_priv {
 	u16 seq_no;
 	u32 bmiss_cnt;
 
+	struct ath9k_hw_cal_data caldata[38];
+
 	spinlock_t beacon_lock;
 
 	bool tx_queues_stop;
--- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
@@ -125,6 +125,7 @@ static int ath9k_htc_set_channel(struct 
 	struct ieee80211_conf *conf = &common->hw->conf;
 	bool fastcc = true;
 	struct ieee80211_channel *channel = hw->conf.channel;
+	struct ath9k_hw_cal_data *caldata;
 	enum htc_phymode mode;
 	__be16 htc_mode;
 	u8 cmd_rsp;
@@ -149,7 +150,8 @@ static int ath9k_htc_set_channel(struct 
 		  priv->ah->curchan->channel,
 		  channel->center_freq, conf_is_ht(conf), conf_is_ht40(conf));
 
-	ret = ath9k_hw_reset(ah, hchan, fastcc);
+	caldata = &priv->caldata[channel->hw_value];
+	ret = ath9k_hw_reset(ah, hchan, caldata, fastcc);
 	if (ret) {
 		ath_print(common, ATH_DBG_FATAL,
 			  "Unable to reset channel (%u Mhz) "
@@ -1028,7 +1030,7 @@ static void ath9k_htc_radio_enable(struc
 		ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
 
 	/* Reset the HW */
-	ret = ath9k_hw_reset(ah, ah->curchan, false);
+	ret = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
 	if (ret) {
 		ath_print(common, ATH_DBG_FATAL,
 			  "Unable to reset hardware; reset status %d "
@@ -1091,7 +1093,7 @@ static void ath9k_htc_radio_disable(stru
 		ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
 
 	/* Reset the HW */
-	ret = ath9k_hw_reset(ah, ah->curchan, false);
+	ret = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
 	if (ret) {
 		ath_print(common, ATH_DBG_FATAL,
 			  "Unable to reset hardware; reset status %d "
@@ -1179,7 +1181,7 @@ static int ath9k_htc_start(struct ieee80
 	ath9k_hw_configpcipowersave(ah, 0, 0);
 
 	ath9k_hw_htc_resetinit(ah);
-	ret = ath9k_hw_reset(ah, init_channel, false);
+	ret = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
 	if (ret) {
 		ath_print(common, ATH_DBG_FATAL,
 			  "Unable to reset hardware; reset status %d "
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -346,19 +346,25 @@ enum ath9k_int {
 	 CHANNEL_HT40PLUS |			\
 	 CHANNEL_HT40MINUS)
 
-struct ath9k_channel {
-	struct ieee80211_channel *chan;
+struct ath9k_hw_cal_data {
 	u16 channel;
 	u32 channelFlags;
-	u32 chanmode;
 	int32_t CalValid;
-	bool oneTimeCalsDone;
 	int8_t iCoff;
 	int8_t qCoff;
 	int16_t rawNoiseFloor;
 	bool paprd_done;
+	bool nfcal_pending;
 	u16 small_signal_gain[AR9300_MAX_CHAINS];
 	u32 pa_table[AR9300_MAX_CHAINS][PAPRD_TABLE_SZ];
+	struct ath9k_nfcal_hist nfCalHist[NUM_NF_READINGS];
+};
+
+struct ath9k_channel {
+	struct ieee80211_channel *chan;
+	u16 channel;
+	u32 channelFlags;
+	u32 chanmode;
 };
 
 #define IS_CHAN_G(_c) ((((_c)->channelFlags & (CHANNEL_G)) == CHANNEL_G) || \
@@ -669,7 +675,7 @@ struct ath_hw {
 	enum nl80211_iftype opmode;
 	enum ath9k_power_mode power_mode;
 
-	struct ath9k_nfcal_hist nfCalHist[NUM_NF_READINGS];
+	struct ath9k_hw_cal_data *caldata;
 	struct ath9k_pacal_info pacal_info;
 	struct ar5416Stats stats;
 	struct ath9k_tx_queue_info txq[ATH9K_NUM_TX_QUEUES];
@@ -863,7 +869,7 @@ const char *ath9k_hw_probe(u16 vendorid,
 void ath9k_hw_deinit(struct ath_hw *ah);
 int ath9k_hw_init(struct ath_hw *ah);
 int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
-		   bool bChannelChange);
+		   struct ath9k_hw_cal_data *caldata, bool bChannelChange);
 int ath9k_hw_fill_cap_info(struct ath_hw *ah);
 u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan);
 
@@ -958,9 +964,10 @@ void ar9003_hw_bb_watchdog_read(struct a
 void ar9003_hw_bb_watchdog_dbg_info(struct ath_hw *ah);
 void ar9003_paprd_enable(struct ath_hw *ah, bool val);
 void ar9003_paprd_populate_single_table(struct ath_hw *ah,
-					struct ath9k_channel *chan, int chain);
-int ar9003_paprd_create_curve(struct ath_hw *ah, struct ath9k_channel *chan,
-			      int chain);
+					struct ath9k_hw_cal_data *caldata,
+					int chain);
+int ar9003_paprd_create_curve(struct ath_hw *ah,
+			      struct ath9k_hw_cal_data *caldata, int chain);
 int ar9003_paprd_setup_gain_table(struct ath_hw *ah, int chain);
 int ar9003_paprd_init_table(struct ath_hw *ah);
 bool ar9003_paprd_is_done(struct ath_hw *ah);
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -1181,7 +1181,7 @@ void ath_drain_all_txq(struct ath_softc 
 			  "Failed to stop TX DMA. Resetting hardware!\n");
 
 		spin_lock_bh(&sc->sc_resetlock);
-		r = ath9k_hw_reset(ah, sc->sc_ah->curchan, false);
+		r = ath9k_hw_reset(ah, sc->sc_ah->curchan, ah->caldata, false);
 		if (r)
 			ath_print(common, ATH_DBG_FATAL,
 				  "Unable to reset hardware; reset status %d\n",