From 6bce8a35cf0aa184571e7e7049c1d15873afff30 Mon Sep 17 00:00:00 2001
From: Hans Petter Selasky <hselasky@FreeBSD.org>
Date: Thu, 17 Mar 2022 15:23:46 +0100
Subject: [PATCH] usb(4): Check return value from
 bus_generic_get_device_path().

MFC after:		1 week
Sponsored by:		NVIDIA Networking
---
 sys/dev/usb/usb_hub.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/dev/usb/usb_hub.c b/sys/dev/usb/usb_hub.c
index 6cd4cfd37ee4..1e5427a8bddd 100644
--- a/sys/dev/usb/usb_hub.c
+++ b/sys/dev/usb/usb_hub.c
@@ -1683,6 +1683,8 @@ uhub_get_device_path(device_t bus, device_t child, const char *locator,
 
 	if (strcmp(locator, BUS_LOCATOR_UEFI) == 0) {
 		rv = bus_generic_get_device_path(device_get_parent(bus), bus, locator, sb);
+		if (rv != 0)
+			return (rv);
 
 		sc = device_get_softc(bus);
 		hub = sc->sc_udev->hub;