Re: [PATCH] ACPI: Unneccessary to scan the PCI bus already scanned.

[Ingo Molnar <mingo@elte.hu>]

i also had to hand-merge the x86.git#testing patch below - could you 
double-check that it's needed in this form?

	Ingo

----------->
Subject: x86/acpi: make dev_to_node return online node
From: Yinghai Lu <Yinghai.Lu@Sun.COM>
Date: Wed, 20 Feb 2008 12:41:52 -0800

some numa system (with multi HT chains) may return node without ram. aka it
is not online. Try to get an online node, otherwise return -1

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/pci/acpi.c |    3 +++
 1 file changed, 3 insertions(+)

Index: linux-x86.q/arch/x86/pci/acpi.c
===================================================================
--- linux-x86.q.orig/arch/x86/pci/acpi.c
+++ linux-x86.q/arch/x86/pci/acpi.c
@@ -213,6 +213,9 @@ struct pci_bus * __devinit pci_acpi_scan
 		set_mp_bus_to_node(busnum, node);
 	else
 		node = get_mp_bus_to_node(busnum);
+
+	if (node != -1 && !node_online(node))
+		node = -1;
 #endif
 
 	bus = pci_find_bus(domain, busnum);