Setting Wi-Fi country no longer requires a reboot

debian/changelog

@@ -1,3 +1,9 @@
+raspi-config (20180228) stretch; urgency=medium
+
+  * Setting Wi-Fi country no longer requires a reboot
+
+ -- Serge Schneider <serge@raspberrypi.org>  Wed, 28 Feb 2018 17:28:50 +0000
+
 raspi-config (20171201) stretch; urgency=medium
 
   * Add pixel doubling option

debian/control

@@ -10,6 +10,6 @@ Vcs-Browser: https://github.com/RPi-Distro/raspi-config
 Package: raspi-config
 Architecture: all
 Depends: ${misc:Depends}, whiptail, parted, lua5.1, alsa-utils, psmisc
-Recommends: triggerhappy
+Recommends: triggerhappy, iw
 Description: Raspberry Pi configuration tool
  A simple configuration tool for common Raspberry Pi administrative tasks

raspi-config

@@ -447,10 +447,15 @@ do_wifi_country() {
     else
         echo "country=$COUNTRY" > /etc/wpa_supplicant/wpa_supplicant.conf
     fi
+    if ! iw reg set "$COUNTRY" 2> /dev/null; then
+        ASK_TO_REBOOT=1
+    fi
+    if [ -f /run/wifi-country-unset ] && hash rfkill 2> /dev/null; then
+        rfkill unblock wifi
+    fi
     if [ "$INTERACTIVE" = True ]; then
         whiptail --msgbox "Wi-fi country set to $COUNTRY" 20 60 1
     fi
-    ASK_TO_REBOOT=1
   fi
   IFS=$oIFS
 }