--- device/usb/usb_service_impl.cc.orig	2018-06-13 00:10:18.000000000 +0200
+++ device/usb/usb_service_impl.cc	2018-07-20 12:49:59.699912000 +0200
@@ -239,8 +239,10 @@
 }
 
 UsbServiceImpl::~UsbServiceImpl() {
+#if !defined(OS_FREEBSD)
   if (hotplug_enabled_)
     libusb_hotplug_deregister_callback(context_->context(), hotplug_handle_);
+#endif // !defined(OS_FREEBSD)
 }
 
 void UsbServiceImpl::GetDevices(const GetDevicesCallback& callback) {
@@ -295,6 +297,7 @@
 
   context_ = std::move(context);
 
+#if !defined(OS_FREEBSD)
   int rv = libusb_hotplug_register_callback(
       context_->context(),
       static_cast<libusb_hotplug_event>(LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED |
@@ -307,6 +310,7 @@
 
   // This will call any enumeration callbacks queued while initializing.
   RefreshDevices();
+#endif // !defined(OS_FREEBSD)
 
 #if defined(OS_WIN)
   DeviceMonitorWin* device_monitor = DeviceMonitorWin::GetForAllInterfaces();
@@ -503,6 +507,7 @@
   device->OnDisconnect();
 }
 
+#if !defined(OS_FREEBSD)
 // static
 int LIBUSB_CALL UsbServiceImpl::HotplugCallback(libusb_context* context,
                                                 libusb_device* device_raw,
@@ -537,6 +542,7 @@
 
   return 0;
 }
+#endif // !defined(OS_FREEBSD)
 
 void UsbServiceImpl::OnPlatformDeviceAdded(
     ScopedLibusbDeviceRef platform_device) {