1 files changed, 92 insertions, 87 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 0db3bc011ac2..663dc83be501 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -1567,9 +1567,8 @@ static void iwl_alive_start(struct iwl_priv *priv)
 	if (iwl_is_associated(priv)) {
 		struct iwl_rxon_cmd *active_rxon =
 				(struct iwl_rxon_cmd *)&priv->active_rxon;
-
-		memcpy(&priv->staging_rxon, &priv->active_rxon,
-		       sizeof(priv->staging_rxon));
+		/* apply any changes in staging */
+		priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
 		active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 	} else {
 		/* Initialize our rx_config data */
@@ -2184,110 +2183,112 @@ static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
 	struct iwl_priv *priv = hw->priv;
 	const struct iwl_channel_info *ch_info;
 	struct ieee80211_conf *conf = &hw->conf;
-	unsigned long flags;
+	unsigned long flags = 0;
 	int ret = 0;
-	u16 channel;
+	u16 ch;
+	int scan_active = 0;
 
 	mutex_lock(&priv->mutex);
-	IWL_DEBUG_MAC80211(priv, "enter to channel %d\n", conf->channel->hw_value);
+	IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
+					conf->channel->hw_value, changed);
 
-	priv->current_ht_config.is_ht = conf_is_ht(conf);
-
-	if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
-		IWL_DEBUG_MAC80211(priv, "leave - RF-KILL - waiting for uCode\n");
-		goto out;
+	if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
+			test_bit(STATUS_SCANNING, &priv->status))) {
+		scan_active = 1;
+		IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
 	}
 
-	if (!conf->radio_enabled)
-		iwl_radio_kill_sw_disable_radio(priv);
 
-	if (!iwl_is_ready(priv)) {
-		IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
-		ret = -EIO;
-		goto out;
-	}
+	/* during scanning mac80211 will delay channel setting until
+	 * scan finish with changed = 0
+	 */
+	if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
+		if (scan_active)
+			goto set_ch_out;
+
+		ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
+		ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
+		if (!is_channel_valid(ch_info)) {
+			IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
+			ret = -EINVAL;
+			goto set_ch_out;
+		}
 
-	if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
-		     test_bit(STATUS_SCANNING, &priv->status))) {
-		IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
-		mutex_unlock(&priv->mutex);
-		return 0;
-	}
+		if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
+			!is_channel_ibss(ch_info)) {
+			IWL_ERR(priv, "channel %d in band %d not "
+				"IBSS channel\n",
+				conf->channel->hw_value, conf->channel->band);
+			ret = -EINVAL;
+			goto set_ch_out;
+		}
 
-	channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
-	ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
-	if (!is_channel_valid(ch_info)) {
-		IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
-		ret = -EINVAL;
-		goto out;
-	}
+		priv->current_ht_config.is_ht = conf_is_ht(conf);
 
-	if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
-	    !is_channel_ibss(ch_info)) {
-		IWL_ERR(priv, "channel %d in band %d not IBSS channel\n",
-			conf->channel->hw_value, conf->channel->band);
-		ret = -EINVAL;
-		goto out;
-	}
+		spin_lock_irqsave(&priv->lock, flags);
 
-	spin_lock_irqsave(&priv->lock, flags);
 
+		/* if we are switching from ht to 2.4 clear flags
+		 * from any ht related info since 2.4 does not
+		 * support ht */
+		if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
+			priv->staging_rxon.flags = 0;
 
-	/* if we are switching from ht to 2.4 clear flags
-	 * from any ht related info since 2.4 does not
-	 * support ht */
-	if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
-#ifdef IEEE80211_CONF_CHANNEL_SWITCH
-	    && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
-#endif
-	)
-		priv->staging_rxon.flags = 0;
+		iwl_set_rxon_channel(priv, conf->channel);
 
-	iwl_set_rxon_channel(priv, conf->channel);
+		iwl_set_flags_for_band(priv, conf->channel->band);
+		spin_unlock_irqrestore(&priv->lock, flags);
+ set_ch_out:
+		/* The list of supported rates and rate mask can be different
+		 * for each band; since the band may have changed, reset
+		 * the rate mask to what mac80211 lists */
+		iwl_set_rate(priv);
+	}
 
-	iwl_set_flags_for_band(priv, conf->channel->band);
+	if (changed & IEEE80211_CONF_CHANGE_PS) {
+		if (conf->flags & IEEE80211_CONF_PS)
+			ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
+		else
+			ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
+		if (ret)
+			IWL_DEBUG_MAC80211(priv, "Error setting power level\n");
 
-	/* The list of supported rates and rate mask can be different
-	 * for each band; since the band may have changed, reset
-	 * the rate mask to what mac80211 lists */
-	iwl_set_rate(priv);
+	}
 
-	spin_unlock_irqrestore(&priv->lock, flags);
+	if (changed & IEEE80211_CONF_CHANGE_POWER) {
+		IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
+			priv->tx_power_user_lmt, conf->power_level);
 
-#ifdef IEEE80211_CONF_CHANNEL_SWITCH
-	if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
-		iwl_hw_channel_switch(priv, conf->channel);
-		goto out;
+		iwl_set_tx_power(priv, conf->power_level, false);
+	}
+
+	/* call to ensure that 4965 rx_chain is set properly in monitor mode */
+	iwl_set_rxon_chain(priv);
+
+	if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
+		if (conf->radio_enabled &&
+			iwl_radio_kill_sw_enable_radio(priv)) {
+			IWL_DEBUG_MAC80211(priv, "leave - RF-KILL - "
+						"waiting for uCode\n");
+			goto out;
+		}
+
+		if (!conf->radio_enabled)
+			iwl_radio_kill_sw_disable_radio(priv);
 	}
-#endif
 
 	if (!conf->radio_enabled) {
 		IWL_DEBUG_MAC80211(priv, "leave - radio disabled\n");
 		goto out;
 	}
 
-	if (iwl_is_rfkill(priv)) {
-		IWL_DEBUG_MAC80211(priv, "leave - RF kill\n");
-		ret = -EIO;
+	if (!iwl_is_ready(priv)) {
+		IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
 		goto out;
 	}
 
-	if (conf->flags & IEEE80211_CONF_PS)
-		ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
-	else
-		ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
-	if (ret)
-		IWL_DEBUG_MAC80211(priv, "Error setting power level\n");
-
-	IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
-			   priv->tx_power_user_lmt, conf->power_level);
-
-	iwl_set_tx_power(priv, conf->power_level, false);
-
-	iwl_set_rate(priv);
-
-	/* call to ensure that 4965 rx_chain is set properly in monitor mode */
-	iwl_set_rxon_chain(priv);
+	if (scan_active)
+		goto out;
 
 	if (memcmp(&priv->active_rxon,
 		   &priv->staging_rxon, sizeof(priv->staging_rxon)))
@@ -2295,9 +2296,9 @@ static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
 	else
 		IWL_DEBUG_INFO(priv, "No re-sending same RXON configuration.\n");
 
-	IWL_DEBUG_MAC80211(priv, "leave\n");
 
 out:
+	IWL_DEBUG_MAC80211(priv, "leave\n");
 	mutex_unlock(&priv->mutex);
 	return ret;
 }
@@ -2682,6 +2683,7 @@ static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
 			     struct ieee80211_sta *sta, u16 tid, u16 *ssn)
 {
 	struct iwl_priv *priv = hw->priv;
+	int ret;
 
 	IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
 		     sta->addr, tid);
@@ -2695,13 +2697,21 @@ static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
 		return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
 	case IEEE80211_AMPDU_RX_STOP:
 		IWL_DEBUG_HT(priv, "stop Rx\n");
-		return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
+		ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid);
+		if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+			return 0;
+		else
+			return ret;
 	case IEEE80211_AMPDU_TX_START:
 		IWL_DEBUG_HT(priv, "start Tx\n");
 		return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
 	case IEEE80211_AMPDU_TX_STOP:
 		IWL_DEBUG_HT(priv, "stop Tx\n");
-		return iwl_tx_agg_stop(priv, sta->addr, tid);
+		ret = iwl_tx_agg_stop(priv, sta->addr, tid);
+		if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+			return 0;
+		else
+			return ret;
 	default:
 		IWL_DEBUG_HT(priv, "unknown\n");
 		return -EINVAL;
@@ -3083,11 +3093,6 @@ static ssize_t store_power_level(struct device *d,
 
 	mutex_lock(&priv->mutex);
 
-	if (!iwl_is_ready(priv)) {
-		ret = -EAGAIN;
-		goto out;
-	}
-
 	ret = strict_strtoul(buf, 10, &mode);
 	if (ret)
 		goto out;