mac80211: remove ieee80211_get_operstate()

ieee80211_get_operstate() was used by drivers in order to
know whether the sta link is up, but it's no longer needed
(nor used) as mac80211 notifies the drivers about
authorization changes (via the sta_state callback)

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

include/net/mac80211.h

@@ -3555,16 +3555,6 @@ void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
 			       enum nl80211_cqm_rssi_threshold_event rssi_event,
 			       gfp_t gfp);
 
-/**
- * ieee80211_get_operstate - get the operstate of the vif
- *
- * @vif: &struct ieee80211_vif pointer from the add_interface callback.
- *
- * The driver might need to know the operstate of the net_device
- * (specifically, whether the link is IF_OPER_UP after resume)
- */
-unsigned char ieee80211_get_operstate(struct ieee80211_vif *vif);
-
 /**
  * ieee80211_chswitch_done - Complete channel switch process
  * @vif: &struct ieee80211_vif pointer from the add_interface callback.

net/mac80211/mlme.c

@@ -3530,10 +3530,3 @@ void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
 	cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp);
 }
 EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
-
-unsigned char ieee80211_get_operstate(struct ieee80211_vif *vif)
-{
-	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
-	return sdata->dev->operstate;
-}
-EXPORT_SYMBOL(ieee80211_get_operstate);