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fix crash when detaching/re-attaching a cable where three firewire devices are on the bus.

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This commit is contained in:
cegger 2010-08-26 08:56:15 +00:00
parent 478209477d
commit e6026ef12c
1 changed files with 6 additions and 2 deletions
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8
sys/dev/ieee1394/firewire.c
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@ -1,4 +1,4 @@
/* $NetBSD: firewire.c,v 1.36 2010/08/14 18:28:59 jym Exp $ */
/* $NetBSD: firewire.c,v 1.37 2010/08/26 08:56:15 cegger Exp $ */
/*-
* Copyright (c) 2003 Hidetoshi Shimokawa
* Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: firewire.c,v 1.36 2010/08/14 18:28:59 jym Exp $");
__KERNEL_RCSID(0, "$NetBSD: firewire.c,v 1.37 2010/08/26 08:56:15 cegger Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@ -2053,6 +2053,10 @@ fw_attach_dev(struct firewire_comm *fc)
SLIST_FOREACH(devlist, &sc->devlist, link)
if (devlist->fwdev == fwdev)
break;
if (devlist == NULL)
continue;
if (devlist->fwdev != fwdev)
panic("already detached");