$OpenBSD: patch-device_usb_usb_context_cc,v 1.2 2015/07/23 13:44:04 robert Exp $
--- device/usb/usb_context.cc.orig.port	Wed Jul 22 08:48:51 2015
+++ device/usb/usb_context.cc	Wed Jul 22 16:04:42 2015
@@ -62,7 +62,9 @@ void UsbContext::UsbEventHandler::ThreadMain() {
 
 void UsbContext::UsbEventHandler::Stop() {
   base::subtle::Release_Store(&running_, 0);
+#if !defined(OS_BSD)
   libusb_interrupt_handle_event(context_);
+#endif
 }
 
 UsbContext::UsbContext(PlatformUsbContext context) : context_(context) {
