Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6

61 files changed, 2215 insertions, 872 deletions

diff --git a/drivers/net/wireless/ath/ath5k/phy.c b/drivers/net/wireless/ath/ath5k/phy.c
index 78c26fdccad..d673ab2f6cd 100644
--- a/drivers/net/wireless/ath/ath5k/phy.c
+++ b/drivers/net/wireless/ath/ath5k/phy.c
@@ -282,6 +282,34 @@ int ath5k_hw_phy_disable(struct ath5k_hw *ah)
 	return 0;
 }
 
+/*
+ * Wait for synth to settle
+ */
+static void ath5k_hw_wait_for_synth(struct ath5k_hw *ah,
+			struct ieee80211_channel *channel)
+{
+	/*
+	 * On 5211+ read activation -> rx delay
+	 * and use it (100ns steps).
+	 */
+	if (ah->ah_version != AR5K_AR5210) {
+		u32 delay;
+		delay = ath5k_hw_reg_read(ah, AR5K_PHY_RX_DELAY) &
+			AR5K_PHY_RX_DELAY_M;
+		delay = (channel->hw_value & CHANNEL_CCK) ?
+			((delay << 2) / 22) : (delay / 10);
+		if (ah->ah_bwmode == AR5K_BWMODE_10MHZ)
+			delay = delay << 1;
+		if (ah->ah_bwmode == AR5K_BWMODE_5MHZ)
+			delay = delay << 2;
+		/* XXX: /2 on turbo ? Let's be safe
+		 * for now */
+		udelay(100 + delay);
+	} else {
+		mdelay(1);
+	}
+}
+
 
 /**********************\
 * RF Gain optimization *
@@ -3237,6 +3265,13 @@ int ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
 		/* Failed */
 		if (i >= 100)
 			return -EIO;
+
+		/* Set channel and wait for synth */
+		ret = ath5k_hw_channel(ah, channel);
+		if (ret)
+			return ret;
+
+		ath5k_hw_wait_for_synth(ah, channel);
 	}
 
 	/*
@@ -3251,13 +3286,53 @@ int ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
 	if (ret)
 		return ret;
 
+	/* Write OFDM timings on 5212*/
+	if (ah->ah_version == AR5K_AR5212 &&
+		channel->hw_value & CHANNEL_OFDM) {
+
+		ret = ath5k_hw_write_ofdm_timings(ah, channel);
+		if (ret)
+			return ret;
+
+		/* Spur info is available only from EEPROM versions
+		 * greater than 5.3, but the EEPROM routines will use
+		 * static values for older versions */
+		if (ah->ah_mac_srev >= AR5K_SREV_AR5424)
+			ath5k_hw_set_spur_mitigation_filter(ah,
+							    channel);
+	}
+
+	/* If we used fast channel switching
+	 * we are done, release RF bus and
+	 * fire up NF calibration.
+	 *
+	 * Note: Only NF calibration due to
+	 * channel change, not AGC calibration
+	 * since AGC is still running !
+	 */
+	if (fast) {
+		/*
+		 * Release RF Bus grant
+		 */
+		AR5K_REG_DISABLE_BITS(ah, AR5K_PHY_RFBUS_REQ,
+				    AR5K_PHY_RFBUS_REQ_REQUEST);
+
+		/*
+		 * Start NF calibration
+		 */
+		AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_AGCCTL,
+					AR5K_PHY_AGCCTL_NF);
+
+		return ret;
+	}
+
 	/*
 	 * For 5210 we do all initialization using
 	 * initvals, so we don't have to modify
 	 * any settings (5210 also only supports
 	 * a/aturbo modes)
 	 */
-	if ((ah->ah_version != AR5K_AR5210) && !fast) {
+	if (ah->ah_version != AR5K_AR5210) {
 
 		/*
 		 * Write initial RF gain settings
@@ -3276,22 +3351,6 @@ int ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
 		if (ret)
 			return ret;
 
-		/* Write OFDM timings on 5212*/
-		if (ah->ah_version == AR5K_AR5212 &&
-			channel->hw_value & CHANNEL_OFDM) {
-
-			ret = ath5k_hw_write_ofdm_timings(ah, channel);
-			if (ret)
-				return ret;
-
-			/* Spur info is available only from EEPROM versions
-			 * greater than 5.3, but the EEPROM routines will use
-			 * static values for older versions */
-			if (ah->ah_mac_srev >= AR5K_SREV_AR5424)
-				ath5k_hw_set_spur_mitigation_filter(ah,
-								    channel);
-		}
-
 		/*Enable/disable 802.11b mode on 5111
 		(enable 2111 frequency converter + CCK)*/
 		if (ah->ah_radio == AR5K_RF5111) {
@@ -3322,47 +3381,20 @@ int ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
 	 */
 	ath5k_hw_reg_write(ah, AR5K_PHY_ACT_ENABLE, AR5K_PHY_ACT);
 
+	ath5k_hw_wait_for_synth(ah, channel);
+
 	/*
-	 * On 5211+ read activation -> rx delay
-	 * and use it.
+	 * Perform ADC test to see if baseband is ready
+	 * Set tx hold and check adc test register
 	 */
-	if (ah->ah_version != AR5K_AR5210) {
-		u32 delay;
-		delay = ath5k_hw_reg_read(ah, AR5K_PHY_RX_DELAY) &
-			AR5K_PHY_RX_DELAY_M;
-		delay = (channel->hw_value & CHANNEL_CCK) ?
-			((delay << 2) / 22) : (delay / 10);
-		if (ah->ah_bwmode == AR5K_BWMODE_10MHZ)
-			delay = delay << 1;
-		if (ah->ah_bwmode == AR5K_BWMODE_5MHZ)
-			delay = delay << 2;
-		/* XXX: /2 on turbo ? Let's be safe
-		 * for now */
-		udelay(100 + delay);
-	} else {
-		mdelay(1);
-	}
-
-	if (fast)
-		/*
-		 * Release RF Bus grant
-		 */
-		AR5K_REG_DISABLE_BITS(ah, AR5K_PHY_RFBUS_REQ,
-				    AR5K_PHY_RFBUS_REQ_REQUEST);
-	else {
-		/*
-		 * Perform ADC test to see if baseband is ready
-		 * Set tx hold and check adc test register
-		 */
-		phy_tst1 = ath5k_hw_reg_read(ah, AR5K_PHY_TST1);
-		ath5k_hw_reg_write(ah, AR5K_PHY_TST1_TXHOLD, AR5K_PHY_TST1);
-		for (i = 0; i <= 20; i++) {
-			if (!(ath5k_hw_reg_read(ah, AR5K_PHY_ADC_TEST) & 0x10))
-				break;
-			udelay(200);
-		}
-		ath5k_hw_reg_write(ah, phy_tst1, AR5K_PHY_TST1);
+	phy_tst1 = ath5k_hw_reg_read(ah, AR5K_PHY_TST1);
+	ath5k_hw_reg_write(ah, AR5K_PHY_TST1_TXHOLD, AR5K_PHY_TST1);
+	for (i = 0; i <= 20; i++) {
+		if (!(ath5k_hw_reg_read(ah, AR5K_PHY_ADC_TEST) & 0x10))
+			break;
+		udelay(200);
 	}
+	ath5k_hw_reg_write(ah, phy_tst1, AR5K_PHY_TST1);
 
 	/*
 	 * Start automatic gain control calibration
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index bd85e311c51..7c8409e5359 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -602,6 +602,8 @@ struct ath_softc {
 	struct completion paprd_complete;
 	bool paprd_pending;
 
+	unsigned int hw_busy_count;
+
 	u32 intrstatus;
 	u32 sc_flags; /* SC_OP_* */
 	u16 ps_flags; /* PS_* */
diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index 87ba44c0669..fcb36abfc30 100644
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -721,8 +721,9 @@ void ath_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif)
 		cur_conf->beacon_interval = 100;
 
 	/*
-	 * Some times we dont parse dtim period from mac80211, in that case
-	 * use a default value
+	 * We don't parse dtim period from mac80211 during the driver
+	 * initialization as it breaks association with hidden-ssid
+	 * AP and it causes latency in roaming
 	 */
 	if (cur_conf->dtim_period == 0)
 		cur_conf->dtim_period = 1;
diff --git a/drivers/net/wireless/ath/ath9k/common.c b/drivers/net/wireless/ath/ath9k/common.c
index df1998d4825..615e68276e7 100644
--- a/drivers/net/wireless/ath/ath9k/common.c
+++ b/drivers/net/wireless/ath/ath9k/common.c
@@ -189,6 +189,17 @@ void ath9k_cmn_btcoex_bt_stomp(struct ath_common *common,
 }
 EXPORT_SYMBOL(ath9k_cmn_btcoex_bt_stomp);
 
+void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow,
+			    u16 new_txpow, u16 *txpower)
+{
+	if (cur_txpow != new_txpow) {
+		ath9k_hw_set_txpowerlimit(ah, new_txpow, false);
+		/* read back in case value is clamped */
+		*txpower = ath9k_hw_regulatory(ah)->power_limit;
+	}
+}
+EXPORT_SYMBOL(ath9k_cmn_update_txpow);
+
 static int __init ath9k_cmn_init(void)
 {
 	return 0;
diff --git a/drivers/net/wireless/ath/ath9k/common.h b/drivers/net/wireless/ath/ath9k/common.h
index 4c7020b3a5a..b2f7b5f8909 100644
--- a/drivers/net/wireless/ath/ath9k/common.h
+++ b/drivers/net/wireless/ath/ath9k/common.h
@@ -68,3 +68,5 @@ struct ath9k_channel *ath9k_cmn_get_curchannel(struct ieee80211_hw *hw,
 int ath9k_cmn_count_streams(unsigned int chainmask, int max);
 void ath9k_cmn_btcoex_bt_stomp(struct ath_common *common,
 				  enum ath_stomp_type stomp_type);
+void ath9k_cmn_update_txpow(struct ath_hw *ah, u16 cur_txpow,
+			    u16 new_txpow, u16 *txpower);
diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index 9cdc41b0ec4..5cfcf8c235a 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -381,21 +381,40 @@ static const struct file_operations fops_interrupt = {
 	.llseek = default_llseek,
 };
 
+static const char *channel_type_str(enum nl80211_channel_type t)
+{
+	switch (t) {
+	case NL80211_CHAN_NO_HT:
+		return "no ht";
+	case NL80211_CHAN_HT20:
+		return "ht20";
+	case NL80211_CHAN_HT40MINUS:
+		return "ht40-";
+	case NL80211_CHAN_HT40PLUS:
+		return "ht40+";
+	default:
+		return "???";
+	}
+}
+
 static ssize_t read_file_wiphy(struct file *file, char __user *user_buf,
 			       size_t count, loff_t *ppos)
 {
 	struct ath_softc *sc = file->private_data;
 	struct ieee80211_channel *chan = sc->hw->conf.channel;
+	struct ieee80211_conf *conf = &(sc->hw->conf);
 	char buf[512];
 	unsigned int len = 0;
 	u8 addr[ETH_ALEN];
 	u32 tmp;
 
 	len += snprintf(buf + len, sizeof(buf) - len,
-			"%s (chan=%d ht=%d)\n",
+			"%s (chan=%d  center-freq: %d MHz  channel-type: %d (%s))\n",
 			wiphy_name(sc->hw->wiphy),
 			ieee80211_frequency_to_channel(chan->center_freq),
-			conf_is_ht(&sc->hw->conf));
+			chan->center_freq,
+			conf->channel_type,
+			channel_type_str(conf->channel_type));
 
 	put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_STA_ID0), addr);
 	put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_STA_ID1) & 0xffff, addr + 4);
diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h
index 63549868e68..0cb504d7b8c 100644
--- a/drivers/net/wireless/ath/ath9k/htc.h
+++ b/drivers/net/wireless/ath/ath9k/htc.h
@@ -460,7 +460,6 @@ void ath9k_htc_ps_restore(struct ath9k_htc_priv *priv);
 void ath9k_ps_work(struct work_struct *work);
 bool ath9k_htc_setpower(struct ath9k_htc_priv *priv,
 			enum ath9k_power_mode mode);
-void ath_update_txpow(struct ath9k_htc_priv *priv);
 
 void ath9k_start_rfkill_poll(struct ath9k_htc_priv *priv);
 void ath9k_htc_rfkill_poll_state(struct ieee80211_hw *hw);
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_gpio.c b/drivers/net/wireless/ath/ath9k/htc_drv_gpio.c
index fe70f67aa08..7e630a81b45 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_gpio.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_gpio.c
@@ -389,7 +389,8 @@ void ath9k_htc_radio_enable(struct ieee80211_hw *hw)
 			ret, ah->curchan->channel);
 	}
 
-	ath_update_txpow(priv);
+	ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
+			       &priv->curtxpow);
 
 	/* Start RX */
 	WMI_CMD(WMI_START_RECV_CMDID);
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
index a702089f18d..953036a4ed5 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
@@ -24,17 +24,6 @@ static struct dentry *ath9k_debugfs_root;
 /* Utilities */
 /*************/
 
-void ath_update_txpow(struct ath9k_htc_priv *priv)
-{
-	struct ath_hw *ah = priv->ah;
-
-	if (priv->curtxpow != priv->txpowlimit) {
-		ath9k_hw_set_txpowerlimit(ah, priv->txpowlimit, false);
-		/* read back in case value is clamped */
-		priv->curtxpow = ath9k_hw_regulatory(ah)->power_limit;
-	}
-}
-
 /* HACK Alert: Use 11NG for 2.4, use 11NA for 5 */
 static enum htc_phymode ath9k_htc_get_curmode(struct ath9k_htc_priv *priv,
 					      struct ath9k_channel *ichan)
@@ -147,7 +136,8 @@ void ath9k_htc_reset(struct ath9k_htc_priv *priv)
 			channel->center_freq, ret);
 	}
 
-	ath_update_txpow(priv);
+	ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
+			       &priv->curtxpow);
 
 	WMI_CMD(WMI_START_RECV_CMDID);
 	ath9k_host_rx_init(priv);
@@ -212,7 +202,8 @@ static int ath9k_htc_set_channel(struct ath9k_htc_priv *priv,
 		goto err;
 	}
 
-	ath_update_txpow(priv);
+	ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
+			       &priv->curtxpow);
 
 	WMI_CMD(WMI_START_RECV_CMDID);
 	if (ret)
@@ -988,7 +979,8 @@ static int ath9k_htc_start(struct ieee80211_hw *hw)
 		return ret;
 	}
 
-	ath_update_txpow(priv);
+	ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
+			       &priv->curtxpow);
 
 	mode = ath9k_htc_get_curmode(priv, init_channel);
 	htc_mode = cpu_to_be16(mode);
@@ -1052,6 +1044,7 @@ static void ath9k_htc_stop(struct ieee80211_hw *hw)
 	cancel_work_sync(&priv->fatal_work);
 	cancel_work_sync(&priv->ps_work);
 	cancel_delayed_work_sync(&priv->ath9k_led_blink_work);
+	cancel_delayed_work_sync(&priv->ath9k_ani_work);
 	ath9k_led_stop_brightness(priv);
 
 	mutex_lock(&priv->mutex);
@@ -1253,7 +1246,8 @@ static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed)
 
 	if (changed & IEEE80211_CONF_CHANGE_POWER) {
 		priv->txpowlimit = 2 * conf->power_level;
-		ath_update_txpow(priv);
+		ath9k_cmn_update_txpow(priv->ah, priv->curtxpow,
+				       priv->txpowlimit, &priv->curtxpow);
 	}
 
 	if (changed & IEEE80211_CONF_CHANGE_IDLE) {
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 1447b55a8d0..2d4e9b861b6 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -18,17 +18,6 @@
 #include "ath9k.h"
 #include "btcoex.h"
 
-static void ath_update_txpow(struct ath_softc *sc)
-{
-	struct ath_hw *ah = sc->sc_ah;
-
-	if (sc->curtxpow != sc->config.txpowlimit) {
-		ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit, false);
-		/* read back in case value is clamped */
-		sc->curtxpow = ath9k_hw_regulatory(ah)->power_limit;
-	}
-}
-
 static u8 parse_mpdudensity(u8 mpdudensity)
 {
 	/*
@@ -64,19 +53,6 @@ static u8 parse_mpdudensity(u8 mpdudensity)
 	}
 }
 
-static struct ath9k_channel *ath_get_curchannel(struct ath_softc *sc,
-						struct ieee80211_hw *hw)
-{
-	struct ieee80211_channel *curchan = hw->conf.channel;
-	struct ath9k_channel *channel;
-	u8 chan_idx;
-
-	chan_idx = curchan->hw_value;
-	channel = &sc->sc_ah->channels[chan_idx];
-	ath9k_cmn_update_ichannel(channel, curchan, hw->conf.channel_type);
-	return channel;
-}
-
 bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode)
 {
 	unsigned long flags;
@@ -177,7 +153,12 @@ static void ath_update_survey_nf(struct ath_softc *sc, int channel)
 	}
 }
 
-static void ath_update_survey_stats(struct ath_softc *sc)
+/*
+ * Updates the survey statistics and returns the busy time since last
+ * update in %, if the measurement duration was long enough for the
+ * result to be useful, -1 otherwise.
+ */
+static int ath_update_survey_stats(struct ath_softc *sc)
 {
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath_common *common = ath9k_hw_common(ah);
@@ -185,9 +166,10 @@ static void ath_update_survey_stats(struct ath_softc *sc)
 	struct survey_info *survey = &sc->survey[pos];
 	struct ath_cycle_counters *cc = &common->cc_survey;
 	unsigned int div = common->clockrate * 1000;
+	int ret = 0;
 
 	if (!ah->curchan)
-		return;
+		return -1;
 
 	if (ah->power_mode == ATH9K_PM_AWAKE)
 		ath_hw_cycle_counters_update(common);
@@ -202,9 +184,18 @@ static void ath_update_survey_stats(struct ath_softc *sc)
 		survey->channel_time_rx += cc->rx_frame / div;
 		survey->channel_time_tx += cc->tx_frame / div;
 	}
+
+	if (cc->cycles < div)
+		return -1;
+
+	if (cc->cycles > 0)
+		ret = cc->rx_busy * 100 / cc->cycles;
+
 	memset(cc, 0, sizeof(*cc));
 
 	ath_update_survey_nf(sc, pos);
+
+	return ret;
 }
 
 /*
@@ -226,6 +217,8 @@ int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
 	if (sc->sc_flags & SC_OP_INVALID)
 		return -EIO;
 
+	sc->hw_busy_count = 0;
+
 	del_timer_sync(&common->ani.timer);
 	cancel_work_sync(&sc->paprd_work);
 	cancel_work_sync(&sc->hw_check_work);
@@ -284,7 +277,8 @@ int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
 		goto ps_restore;
 	}
 
-	ath_update_txpow(sc);
+	ath9k_cmn_update_txpow(ah, sc->curtxpow,
+			       sc->config.txpowlimit, &sc->curtxpow);
 	ath9k_hw_set_interrupts(ah, ah->imask);
 
 	if (!(sc->sc_flags & (SC_OP_OFFCHANNEL))) {
@@ -592,17 +586,25 @@ static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
 void ath_hw_check(struct work_struct *work)
 {
 	struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
-	int i;
+	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+	unsigned long flags;
+	int busy;
 
 	ath9k_ps_wakeup(sc);
+	if (ath9k_hw_check_alive(sc->sc_ah))
+		goto out;
 
-	for (i = 0; i < 3; i++) {
-		if (ath9k_hw_check_alive(sc->sc_ah))
-			goto out;
+	spin_lock_irqsave(&common->cc_lock, flags);
+	busy = ath_update_survey_stats(sc);
+	spin_unlock_irqrestore(&common->cc_lock, flags);
 
-		msleep(1);
-	}
-	ath_reset(sc, true);
+	ath_dbg(common, ATH_DBG_RESET, "Possible baseband hang, "
+		"busy=%d (try %d)\n", busy, sc->hw_busy_count + 1);
+	if (busy >= 99) {
+		if (++sc->hw_busy_count >= 3)
+			ath_reset(sc, true);
+	} else if (busy >= 0)
+		sc->hw_busy_count = 0;
 
 out:
 	ath9k_ps_restore(sc);
@@ -867,7 +869,7 @@ void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
 	ath9k_hw_configpcipowersave(ah, 0, 0);
 
 	if (!ah->curchan)
-		ah->curchan = ath_get_curchannel(sc, sc->hw);
+		ah->curchan = ath9k_cmn_get_curchannel(sc->hw, ah);
 
 	r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
 	if (r) {
@@ -876,7 +878,8 @@ void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
 			channel->center_freq, r);
 	}
 
-	ath_update_txpow(sc);
+	ath9k_cmn_update_txpow(ah, sc->curtxpow,
+			       sc->config.txpowlimit, &sc->curtxpow);
 	if (ath_startrecv(sc) != 0) {
 		ath_err(common, "Unable to restart recv logic\n");
 		goto out;
@@ -928,7 +931,7 @@ void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw)
 	ath_flushrecv(sc);		/* flush recv queue */
 
 	if (!ah->curchan)
-		ah->curchan = ath_get_curchannel(sc, hw);
+		ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
 
 	r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
 	if (r) {
@@ -952,6 +955,8 @@ int ath_reset(struct ath_softc *sc, bool retry_tx)
 	struct ieee80211_hw *hw = sc->hw;
 	int r;
 
+	sc->hw_busy_count = 0;
+
 	/* Stop ANI */
 	del_timer_sync(&common->ani.timer);
 
@@ -979,7 +984,8 @@ int ath_reset(struct ath_softc *sc, bool retry_tx)
 	 * that changes the channel so update any state that