iwlwifi: mvm: better handle several several vifs in BT Coex

When there one vif on 5GHz associating, it would clear all
the BT Coex constraints. This can't work if there is
another vif on 2.4GHz. Fix that.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/iwlwifi/mvm/bt-coex.c

@@ -384,6 +384,10 @@ static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac,
 
 	smps_mode = IEEE80211_SMPS_AUTOMATIC;
 
+	/* non associated BSSes aren't to be considered */
+	if (!vif->bss_conf.assoc)
+		return;
+
 	if (band != IEEE80211_BAND_2GHZ) {
 		iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
 				    smps_mode);
@@ -588,23 +592,5 @@ void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 
 void iwl_mvm_bt_coex_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 {
-	struct ieee80211_chanctx_conf *chanctx_conf;
-	enum ieee80211_band band;
-
-	rcu_read_lock();
-	chanctx_conf = rcu_dereference(vif->chanctx_conf);
-	if (chanctx_conf && chanctx_conf->def.chan)
-		band = chanctx_conf->def.chan->band;
-	else
-		band = -1;
-	rcu_read_unlock();
-
-	/* if we are in 2GHz we will get a notification from the fw */
-	if (band == IEEE80211_BAND_2GHZ)
-		return;
-
-	/* else, we can remove all the constraints */
-	memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
-
 	iwl_mvm_bt_coex_notif_handle(mvm);
 }

drivers/net/wireless/iwlwifi/mvm/mac80211.c

@@ -761,7 +761,6 @@ static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
 				IWL_ERR(mvm, "failed to update quotas\n");
 				return;
 			}
-			iwl_mvm_bt_coex_vif_assoc(mvm, vif);
 			iwl_mvm_configure_mcast_filter(mvm, vif);
 		} else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
 			/* remove AP station now that the MAC is unassoc */
@@ -782,6 +781,7 @@ static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
 			if (ret)
 				IWL_ERR(mvm, "failed to update power mode\n");
 		}
+		iwl_mvm_bt_coex_vif_assoc(mvm, vif);
 	} else if (changes & BSS_CHANGED_BEACON_INFO) {
 		/*
 		 * We received a beacon _after_ association so