iwlagn: update bt status upon scan complete

Update bt status upon receive scan complete notification
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-commands.h

@@ -3013,7 +3013,7 @@ struct iwl_scanresults_notification {
 struct iwl_scancomplete_notification {
 	u8 scanned_channels;
 	u8 status;
-	u8 reserved;
+	u8 bt_status;	/* BT On/Off status */
 	u8 last_channel;
 	__le32 tsf_low;
 	__le32 tsf_high;

drivers/net/wireless/iwlwifi/iwl-scan.c

@@ -236,6 +236,26 @@ static void iwl_rx_scan_complete_notif(struct iwl_priv *priv,
 
 	clear_bit(STATUS_SCANNING, &priv->status);
 
+	if (priv->iw_mode != NL80211_IFTYPE_ADHOC &&
+	    priv->cfg->advanced_bt_coexist && priv->bt_status !=
+	    scan_notif->bt_status) {
+		if (scan_notif->bt_status) {
+			/* BT on */
+			if (!priv->bt_ch_announce)
+				priv->bt_traffic_load =
+					IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
+			/*
+			 * otherwise, no traffic load information provided
+			 * no changes made
+			 */
+		} else {
+			/* BT off */
+			priv->bt_traffic_load =
+				IWL_BT_COEX_TRAFFIC_LOAD_NONE;
+		}
+		priv->bt_status = scan_notif->bt_status;
+		queue_work(priv->workqueue, &priv->bt_traffic_change_work);
+	}
 	queue_work(priv->workqueue, &priv->scan_completed);
 }