mac80211: Fix queuing of scan containing a SSID

This patch fixes scanning for specific ssid's which is broken due to the
scan being queued up without respecting the ssid to scan for.

Signed-off-by: Helmut Schaa <hschaa@suse.de>
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
index fda0e06..fc6a3ff 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/ieee80211_sta.c
@@ -1998,7 +1998,10 @@
 	if (ifsta->state != IEEE80211_AUTHENTICATE &&
 	    ifsta->state != IEEE80211_ASSOCIATE &&
 	    test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
-		ieee80211_sta_start_scan(dev, NULL, 0);
+		if (ifsta->scan_ssid_len)
+			ieee80211_sta_start_scan(dev, ifsta->scan_ssid, ifsta->scan_ssid_len);
+		else
+			ieee80211_sta_start_scan(dev, NULL, 0);
 		return;
 	}
 
@@ -2868,6 +2871,9 @@
 		return -EBUSY;
 	}
 
+	ifsta->scan_ssid_len = ssid_len;
+	if (ssid_len)
+		memcpy(ifsta->scan_ssid, ssid, ssid_len);
 	set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request);
 	queue_work(local->hw.workqueue, &ifsta->work);
 	return 0;