brcmfmac: respect hidden_ssid for AP interfaces

This was succesfully tested with 4366B1. A small workaround is needed
for the main interface otherwise it would stuck at the hidden state.
Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c

@@ -4666,6 +4666,15 @@ brcmf_cfg80211_start_ap(struct wiphy *wiphy, struct net_device *ndev,
 			brcmf_err("SET SSID error (%d)\n", err);
 			goto exit;
 		}
+
+		if (settings->hidden_ssid) {
+			err = brcmf_fil_iovar_int_set(ifp, "closednet", 1);
+			if (err) {
+				brcmf_err("closednet error (%d)\n", err);
+				goto exit;
+			}
+		}
+
 		brcmf_dbg(TRACE, "AP mode configuration complete\n");
 	} else if (dev_role == NL80211_IFTYPE_P2P_GO) {
 		err = brcmf_fil_iovar_int_set(ifp, "chanspec", chanspec);
@@ -4724,6 +4733,10 @@ static int brcmf_cfg80211_stop_ap(struct wiphy *wiphy, struct net_device *ndev)
 			return err;
 		}
 
+		/* First BSS doesn't get a full reset */
+		if (ifp->bsscfgidx == 0)
+			brcmf_fil_iovar_int_set(ifp, "closednet", 0);
+
 		memset(&join_params, 0, sizeof(join_params));
 		err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SET_SSID,
 					     &join_params, sizeof(join_params));