Index: kernel/linux_usb.c
===================================================================
--- kernel/linux_usb.c	(revision 1629)
+++ kernel/linux_usb.c	(working copy)
@@ -266,7 +266,7 @@
  * This function is the FreeBSD probe and attach callback.
  *------------------------------------------------------------------------*/
 int
-usb_linux_probe(uint8_t bus, uint8_t addr, uint8_t index)
+usb_linux_probe_p(int *p_bus, int *p_addr, int *p_index)
 {
 	const struct usb_device_id *id;
 	struct usb_linux_softc *sc;
@@ -281,6 +281,9 @@
 	uint8_t match_bus_addr;
 	uint8_t index_copy;
 	uint8_t device_index;
+	uint8_t bus = *p_bus;
+	uint8_t addr = *p_addr;
+	uint8_t index = *p_index;
 
 	for (i = 0;; i++) {
 		if (i == ARRAY_SIZE(uls))
@@ -365,9 +368,11 @@
 	return (-ENXIO);
 
 found:
+	*p_bus = libusb20_dev_get_bus_number(pdev);
+	*p_addr = libusb20_dev_get_address(pdev);
+	*p_index = index_copy;
 #ifdef HAVE_WEBCAMD
-	if (pidfile_create(libusb20_dev_get_bus_number(pdev),
-	    libusb20_dev_get_address(pdev), index_copy)) {
+	if (pidfile_create(*p_bus, *p_addr, index_copy)) {
 		fprintf(stderr, "Webcamd is already running for "
 		    "ugen%d.%d.%d\n",
 		    libusb20_dev_get_bus_number(pdev),
Index: kernel/linux_usb.h
===================================================================
--- kernel/linux_usb.h	(revision 1629)
+++ kernel/linux_usb.h	(working copy)
@@ -583,7 +583,7 @@
 int	usb_deregister(struct usb_driver *drv);
 
 struct usb_linux_softc *usb_linux2usb(int fd);
-int	usb_linux_probe(uint8_t bus, uint8_t addr, uint8_t index);
+int	usb_linux_probe_p(int *pbus, int *paddr, int *pindex);
 int	usb_linux_detach(int fd);
 int	usb_linux_suspend(int fd);
 int	usb_linux_resume(int fd);
Index: webcamd.c
===================================================================
--- webcamd.c	(revision 1629)
+++ webcamd.c	(working copy)
@@ -462,7 +462,7 @@
 	}
 	linux_init();
 
-	f_usb = usb_linux_probe(u_unit, u_addr, u_index);
+	f_usb = usb_linux_probe_p(&u_unit, &u_addr, &u_index);
 	if (f_usb < 0)
 		v4b_errx(1, "Cannot find USB device");