x86: prevent /sys/firmware/sgi_uv from being created on non-uv systems

PATCH New Russ Anderson 1 participant 1 message Apr 3, 2009

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Russ Anderson

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2009-04-03 22:09 UTC #0 lore raw

PATCH 1/1 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 <[email protected]>

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

arch/x86/kernel/uv_sysfs.c +4 -0

Index: linux/arch/x86/kernel/uv_sysfs.c
===================================================================
@@ -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);

Signature · 2 lines

Russ Anderson, OS RAS/Partitioning Project Lead  
SGI - Silicon Graphics Inc          [email protected]