[src/trunk]: src/sys/dev/usb shut up an unused variable warning

[macallan <macallan%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/35616e82b8b6
branches:  trunk
changeset: 359832:35616e82b8b6
user:      macallan <macallan%NetBSD.org@localhost>
date:      Wed Jan 26 16:49:06 2022 +0000

description:
shut up an unused variable warning
apparently clang gets confused by bus_dmatag_subregion() being EOPNOTSUPP
on powerpc

diffstat:

 sys/dev/usb/ehci.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r 0c123597e72f -r 35616e82b8b6 sys/dev/usb/ehci.c
--- a/sys/dev/usb/ehci.c        Wed Jan 26 12:41:26 2022 +0000
+++ b/sys/dev/usb/ehci.c        Wed Jan 26 16:49:06 2022 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ehci.c,v 1.300 2021/12/30 04:19:23 mrg Exp $ */
+/*     $NetBSD: ehci.c,v 1.301 2022/01/26 16:49:06 macallan Exp $ */
 
 /*
  * Copyright (c) 2004-2012,2016,2020 The NetBSD Foundation, Inc.
@@ -54,7 +54,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ehci.c,v 1.300 2021/12/30 04:19:23 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ehci.c,v 1.301 2022/01/26 16:49:06 macallan Exp $");
 
 #include "ohci.h"
 #include "uhci.h"
@@ -498,7 +498,7 @@
         * - the driver doesn't currently set EHCI_CTRLDSSEGMENT to anything
         *   other than 0.
         */
-       bus_dma_tag_t ntag;
+       bus_dma_tag_t ntag = NULL;
        sc->sc_dmatag = sc->sc_bus.ub_dmatag;
        err = bus_dmatag_subregion(sc->sc_bus.ub_dmatag, 0, UINT32_MAX,
            &ntag, 0);