--- qemu/roms/seabios/src/usb.h	2018/04/24 17:36:47	1.1.1.1
+++ qemu/roms/seabios/src/usb.h	2018/04/24 17:51:50	1.1.1.2
@@ -32,7 +32,7 @@ struct usb_pipe {
 #define USB_MAXADDR 127
 
 // usb.c
-void usb_setup();
+void usb_setup(void);
 int configure_usb_device(struct usb_s *cntl, int lowspeed);
 struct usb_ctrlrequest;
 int send_default_control(u32 endp, const struct usb_ctrlrequest *req