update hotplug to avoid multiple occurrence of ubus add call

dongle_hotplug

-echo "DEVTYPE - $DEVTYPE " > /dev/console
-echo "DEVPATH - $DEVPATH " > /dev/console
-echo "ACTION -  $ACTION " > /dev/console
-#echo "SEQUNUM - $SEQNUM " > /dev/console
-#echo "SUBSYSTEM - $SUBSYSTEM " > /dev/console
+#echo "DEVTYPE - $DEVTYPE " > /dev/console
+#echo "DEVPATH - $DEVPATH " > /dev/console
+
+
+if [ "$ACTION" == "remove" ]; then
+        #echo "tmp file removed!" > /dev/console
+        rm -r /tmp/donglehotplug
+fi
+
+if [[ -f /tmp/donglehotplug ]] ; then
+        #echo "File exists" > /dev/console
+        exit
+fi
+
+DEV_MOUNTPATH=`echo "$DEVPATH" | cut -d'/' -f 1-6`
+#echo "dongle path: $DEV_MOUNTPATH" > /dev/console
 
-DEV_MOUNTPATH=`echo "/devices/platform/ehci-platform.0/usb3/3-2/3-2:1.0" | cut -d'/' -f 1-6`
-echo "dongle path: $DEV_MOUNTPATH" > /dev/console
 
 case "$ACTION" in
-	add)
-		ubus call dongle alert '{"path":"/sys'${DEV_MOUNTPATH}'"}'
-		echo "ubus call dongle alert '{\"path\":\"/sys$DEV_MOUNTPATH\"}'" > /dev/console
-		;;
-	remove)
-		echo "dongle removed!"
-		;;
-	*)
-		echo "Action: Neither add nor remove" > /dev/console
-		;;
-  esac
+        add)
+                ubus call dongle alert '{"path":"/sys'${DEV_MOUNTPATH}'"}'
+                echo "ubus call dongle alert '{\"path\":\"/sys$DEV_MOUNTPATH\"}'" > /dev/console
+                touch /tmp/donglehotplug
+                ;;
+        remove)
+                echo "dongle removed!"
+                ;;
+        *)
+                echo "Action: Neither add nor remove" > /dev/console
+                ;;
+esac