linux-kernel - [tip:x86/cpu] x86, k8: Fix build error when K8

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Date:	Mon, 3 May 2010 22:41:07 GMT
From:	tip-bot for Borislav Petkov <borislav.petkov@....com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	tglx@...utronix.de, borislav.petkov@....com
Subject: [tip:x86/cpu] x86, k8: Fix build error when K8_NB is disabled

Commit-ID:  d88d95eb1c2a72b6126a550debe0883ff723a948
Gitweb:     http://git.kernel.org/tip/d88d95eb1c2a72b6126a550debe0883ff723a948
Author:     Borislav Petkov <borislav.petkov@....com>
AuthorDate: Sat, 24 Apr 2010 09:56:53 +0200
Committer:  H. Peter Anvin <hpa@...or.com>
CommitDate: Mon, 3 May 2010 14:34:24 -0700

x86, k8: Fix build error when K8_NB is disabled

K8_NB depends on PCI and when the last is disabled (allnoconfig) we fail
at the final linking stage due to missing exported num_k8_northbridges.
Add a header stub for that.

Signed-off-by: Borislav Petkov <borislav.petkov@....com>
LKML-Reference: <20100503183036.GJ26107@...ab>
Signed-off-by: H. Peter Anvin <hpa@...or.com>
---
 arch/x86/include/asm/k8.h |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/x86/include/asm/k8.h b/arch/x86/include/asm/k8.h
index f70e600..af00bd1 100644
--- a/arch/x86/include/asm/k8.h
+++ b/arch/x86/include/asm/k8.h
@@ -16,11 +16,16 @@ extern int k8_numa_init(unsigned long start_pfn, unsigned long end_pfn);
 extern int k8_scan_nodes(void);
 
 #ifdef CONFIG_K8_NB
+extern int num_k8_northbridges;
+
 static inline struct pci_dev *node_to_k8_nb_misc(int node)
 {
 	return (node < num_k8_northbridges) ? k8_northbridges[node] : NULL;
 }
+
 #else
+#define num_k8_northbridges 0
+
 static inline struct pci_dev *node_to_k8_nb_misc(int node)
 {
 	return NULL;
--
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