[src/trunk]: src/sys/dev/usb Refetch interface handle on reset. Avoids poten...

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

details:   https://anonhg.NetBSD.org/src/rev/d1a0254327e8
branches:  trunk
changeset: 534104:d1a0254327e8
user:      augustss <augustss%NetBSD.org@localhost>
date:      Tue Jul 16 22:00:31 2002 +0000

description:
Refetch interface handle on reset.  Avoids potential access to freed memory.
Fix from FreeBSD.

diffstat:

 sys/dev/usb/if_kue.c |  11 +++++------
 1 files changed, 5 insertions(+), 6 deletions(-)

diffs (34 lines):

diff -r f3f67149df91 -r d1a0254327e8 sys/dev/usb/if_kue.c
--- a/sys/dev/usb/if_kue.c      Tue Jul 16 20:20:01 2002 +0000
+++ b/sys/dev/usb/if_kue.c      Tue Jul 16 22:00:31 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_kue.c,v 1.49 2002/07/11 21:14:26 augustss Exp $     */
+/*     $NetBSD: if_kue.c,v 1.50 2002/07/16 22:00:31 augustss Exp $     */
 /*
  * Copyright (c) 1997, 1998, 1999, 2000
  *     Bill Paul <wpaul%ee.columbia.edu@localhost>.  All rights reserved.
@@ -70,7 +70,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_kue.c,v 1.49 2002/07/11 21:14:26 augustss Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_kue.c,v 1.50 2002/07/16 22:00:31 augustss Exp $");
 
 #if defined(__NetBSD__)
 #include "opt_inet.h"
@@ -385,12 +385,11 @@
 Static void
 kue_reset(struct kue_softc *sc)
 {
-       usbd_status             err;
-
        DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev), __func__));
 
-       err = usbd_set_config_no(sc->kue_udev, KUE_CONFIG_NO, 1);
-       if (err)
+       if (usbd_set_config_no(sc->kue_udev, KUE_CONFIG_NO, 1) ||
+           usbd_device2interface_handle(sc->kue_udev, KUE_IFACE_IDX,
+                                        &sc->kue_iface))
                printf("%s: reset failed\n", USBDEVNAME(sc->kue_dev));
 
        /* Wait a little while for the chip to get its brains in order. */