linux-kernel - [PATCH BUGFIX] x86: Prevent /sys/firmware/sgi

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Message-ID: <20090306001930.GA5881@sgi.com>
Date:	Thu, 5 Mar 2009 18:19:30 -0600
From:	Russ Anderson <rja@....com>
To:	linux-kernel@...r.kernel.org
Subject: [PATCH BUGFIX] x86: Prevent /sys/firmware/sgi_uv from being created on non-uv systems

/sys/firmware/sgi_uv should only be created on uv systems.

Signed-off-by: Russ Anderson <rja@....com>

---
 arch/x86/kernel/uv_sysfs.c |    4 ++++
 1 file changed, 4 insertions(+)

Index: linux/arch/x86/kernel/uv_sysfs.c
===================================================================
--- linux.orig/arch/x86/kernel/uv_sysfs.c	2009-03-05 14:22:40.000000000 -0600
+++ linux/arch/x86/kernel/uv_sysfs.c	2009-03-05 14:59:16.000000000 -0600
@@ -21,6 +21,7 @@
 
 #include <linux/sysdev.h>
 #include <asm/uv/bios.h>
+#include <asm/genapic.h>
 
 struct kobject *sgi_uv_kobj;
 
@@ -46,6 +47,9 @@ static struct kobj_attribute coherence_i
 static int __init sgi_uv_sysfs_init(void)
 {
 	unsigned long ret;
+
+	if (!is_uv_system())
+		return -ENODEV;
 
 	if (!sgi_uv_kobj)
 		sgi_uv_kobj = kobject_create_and_add("sgi_uv", firmware_kobj);
-- 
Russ Anderson, OS RAS/Partitioning Project Lead  
SGI - Silicon Graphics Inc          rja@....com
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