From 7d3a36a88ee2630061156fd99dd47405d0fc4f19 Mon Sep 17 00:00:00 2001
From: Andriy Voskoboinyk <avos@FreeBSD.org>
Date: Sun, 4 Dec 2016 15:58:34 +0000
Subject: [PATCH] Do not try to recreate wlan(4) interface if it already
 exists.

This should fix error messages caused by devd(8) during startup:

Starting Network: lo0 wlan0.
...
Starting devd.
ifconfig: SIOCS80211: Device busy
wpa_supplicant already running?  (pid=323).

MFC after:	2 weeks
---
 etc/pccard_ether | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/etc/pccard_ether b/etc/pccard_ether
index 7d324a11b89b..bf4f9c231440 100755
--- a/etc/pccard_ether
+++ b/etc/pccard_ether
@@ -120,6 +120,9 @@ pccard_ether_restart()
 pccard_ether_startchildren()
 {
 	for child in `get_if_var $ifn wlans_IF`; do
+		if ifexists $child; then
+			continue
+		fi
 		/etc/rc.d/netif quietstart $child
 	done
 }