cfg80211: expect different rd in cfg80211 when intersecting

When intersecting it is possible that set_regdom() was called
with a regulatory domain which we'll only use as an aid to
build a final regulatory domain.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/wireless/reg.c

@@ -880,12 +880,13 @@ int set_regdom(const struct ieee80211_regdomain *rd)
 	}
 
 	/* This would make this whole thing pointless */
-	BUG_ON(rd != cfg80211_regdomain);
+	if (!last_request->intersect)
+		BUG_ON(rd != cfg80211_regdomain);
 
 	/* update all wiphys now with the new established regulatory domain */
 	update_all_wiphy_regulatory(last_request->initiator);
 
-	print_regdomain(rd);
+	print_regdomain(cfg80211_regdomain);
 
 	return r;
 }