1 files changed, 60 insertions, 5 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index 3e5bffb6034..a27872de410 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -1844,6 +1844,49 @@ static void iwl3945_irq_tasklet(struct iwl_priv *priv)
 #endif
 }
 
+static int iwl3945_get_single_channel_for_scan(struct iwl_priv *priv,
+					       struct ieee80211_vif *vif,
+					       enum ieee80211_band band,
+					       struct iwl3945_scan_channel *scan_ch)
+{
+	const struct ieee80211_supported_band *sband;
+	u16 passive_dwell = 0;
+	u16 active_dwell = 0;
+	int added = 0;
+	u8 channel = 0;
+
+	sband = iwl_get_hw_mode(priv, band);
+	if (!sband) {
+		IWL_ERR(priv, "invalid band\n");
+		return added;
+	}
+
+	active_dwell = iwl_get_active_dwell_time(priv, band, 0);
+	passive_dwell = iwl_get_passive_dwell_time(priv, band, vif);
+
+	if (passive_dwell <= active_dwell)
+		passive_dwell = active_dwell + 1;
+
+
+	channel = iwl_get_single_channel_number(priv, band);
+
+	if (channel) {
+		scan_ch->channel = channel;
+		scan_ch->type = 0;	/* passive */
+		scan_ch->active_dwell = cpu_to_le16(active_dwell);
+		scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
+		/* Set txpower levels to defaults */
+		scan_ch->tpc.dsp_atten = 110;
+		if (band == IEEE80211_BAND_5GHZ)
+			scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
+		else
+			scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
+		added++;
+	} else
+		IWL_ERR(priv, "no valid channel found\n");
+	return added;
+}
+
 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
 					 enum ieee80211_band band,
 				     u8 is_active, u8 n_probes,
@@ -2992,9 +3035,16 @@ void iwl3945_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
 	/* select Rx antennas */
 	scan->flags |= iwl3945_get_antenna_flags(priv);
 
-	scan->channel_count =
-		iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
-			(void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)], vif);
+	if (priv->is_internal_short_scan) {
+		scan->channel_count =
+			iwl3945_get_single_channel_for_scan(priv, vif, band,
+				(void *)&scan->data[le16_to_cpu(
+				scan->tx_cmd.len)]);
+	} else {
+		scan->channel_count =
+			iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
+				(void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)], vif);
+	}
 
 	if (scan->channel_count == 0) {
 		IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
@@ -3387,10 +3437,13 @@ static int iwl3945_mac_sta_add(struct ieee80211_hw *hw,
 	bool is_ap = vif->type == NL80211_IFTYPE_STATION;
 	u8 sta_id;
 
-	sta_priv->common.sta_id = IWL_INVALID_STATION;
-
 	IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
 			sta->addr);
+	mutex_lock(&priv->mutex);
+	IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
+			sta->addr);
+	sta_priv->common.sta_id = IWL_INVALID_STATION;
+
 
 	ret = iwl_add_station_common(priv, sta->addr, is_ap, &sta->ht_cap,
 				     &sta_id);
@@ -3398,6 +3451,7 @@ static int iwl3945_mac_sta_add(struct ieee80211_hw *hw,
 		IWL_ERR(priv, "Unable to add station %pM (%d)\n",
 			sta->addr, ret);
 		/* Should we return success if return code is EEXIST ? */
+		mutex_unlock(&priv->mutex);
 		return ret;
 	}
 
@@ -3407,6 +3461,7 @@ static int iwl3945_mac_sta_add(struct ieee80211_hw *hw,
 	IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
 		       sta->addr);
 	iwl3945_rs_rate_init(priv, sta, sta_id);
+	mutex_unlock(&priv->mutex);
 
 	return 0;
 }