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x86_64: don't need set default res if only have one root bus

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if there's only one root bus there's no need to split resources.

This patch fixes the issue described at:

  http://lkml.org/lkml/2008/4/10/304

Reported-and-bisected-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Yinghai Lu 2008-04-11 15:14:52 -07:00 committed by Ingo Molnar
parent 6e184f299d
commit 4cf1946374
1 changed files with 2 additions and 1 deletions
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3
arch/x86/pci/k8-bus_64.c
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@ -69,7 +69,8 @@ void set_pci_bus_resources_arch_default(struct pci_bus *b)
int j;
struct pci_root_info *info;
if (!pci_root_num)
/* if only one root bus, don't need to anything */
if (pci_root_num < 2)
return;
for (i = 0; i < pci_root_num; i++) {