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prevent panic for machines without any ACPI MADT table.

This commit is contained in:
kochi 2004-05-23 05:57:57 +00:00
parent 45fb41a2bd
commit 39dacd3455
1 changed files with 5 additions and 2 deletions
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7
sys/arch/x86/x86/mpacpi.c
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@ -1,4 +1,4 @@
/* $NetBSD: mpacpi.c,v 1.28 2004/05/21 16:22:05 kochi Exp $ */
/* $NetBSD: mpacpi.c,v 1.29 2004/05/23 05:57:57 kochi Exp $ */
/*
* Copyright (c) 2003 Wasabi Systems, Inc.
@ -36,7 +36,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: mpacpi.c,v 1.28 2004/05/21 16:22:05 kochi Exp $");
__KERNEL_RCSID(0, "$NetBSD: mpacpi.c,v 1.29 2004/05/23 05:57:57 kochi Exp $");
#include "opt_acpi.h"
#include "opt_mpbios.h"
@ -905,6 +905,9 @@ mpacpi_pci_attach_hook(struct device *parent, struct device *self,
return ENOENT;
#endif
if (TAILQ_EMPTY(&mpacpi_pcibusses))
return 0;
/*
* If this bus is not found in mpacpi_find_pcibusses
* (i.e. behind PCI-to-PCI bridge), register as an extra bus.