linux-kernel - [patch] mm: k8_northbridges[] build fix

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Message-ID: <20090225214542.GB5757@movementarian.org>
Date:	Wed, 25 Feb 2009 16:45:42 -0500
From:	wli@...ementarian.org
To:	linux-kernel@...r.kernel.org
Cc:	Mark Langsdorf <mark.langsdorf@....com>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Eric Lammerts <eric@...merts.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [patch] mm: k8_northbridges[] build fix

k8_northbridges[] isn't a defined symbol unless arch/x86/kernel/k8.c
is compiled, which is conditional on CONFIG_K8_NB. This patch resolves
the link error by making the sysfs access to the k8 northbridge
conditional on CONFIG_K8_NB in like fashion to the k8_northbridges[]
array itself. The issue was encountered on a 32-bit build with the
processor family specified as CONFIG_MCORE2=y.

The link error was introduced in
	x86-conform-l3-cache-index-disable-to-linux-standards.patch

Signed-off-by: William Irwin <wli@...ementarian.org>


Index: mmotm-2.6.29-rc6/arch/x86/kernel/cpu/intel_cacheinfo.c
===================================================================
--- mmotm-2.6.29-rc6.orig/arch/x86/kernel/cpu/intel_cacheinfo.c
+++ mmotm-2.6.29-rc6/arch/x86/kernel/cpu/intel_cacheinfo.c
@@ -613,7 +613,7 @@ static int __cpuinit detect_cache_attrib
 	return retval;
 }
 
-#ifdef CONFIG_SYSFS
+#if defined(CONFIG_SYSFS) && defined(CONFIG_K8_NB)
 
 #include <linux/kobject.h>
 #include <linux/sysfs.h>
@@ -986,4 +986,4 @@ static int __cpuinit cache_sysfs_init(vo
 
 device_initcall(cache_sysfs_init);
 
-#endif
+#endif /* defined(CONFIG_SYSFS) && defined(CONFIG_K8_NB) */
--
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