src/patches/suse-2.6.27.25/patches.fixes/no-sys_uv-on-non-uv-systems

   1 From: Russ Anderson <rja@sgi.com>
   2 Subject: [PATCH] sgi_uv: Don't publish /sys/firmware/sgi_uv on !uv systems
   3 References: bnc#482506
   4 Patch-mainline: Submitted Mar 6 2009 by SGI
   5
   6  MPT testing of sles11 found /sys/firmware/sgi_uv gets created on non-UV x86_64
   7  systems.  This confuses MPT which uses /sys/firmware/sgi_uv to indicate the
   8  platform is a UV system.
   9
  10 Acked-by: Jeff Mahoney <jeffm@suse.com>
  11 ---
  12
  13  arch/x86/kernel/uv_sysfs.c |    4 ++++
  14  1 file changed, 4 insertions(+)
  15
  16 --- a/arch/x86/kernel/uv_sysfs.c
  17 +++ b/arch/x86/kernel/uv_sysfs.c
  18 @@ -21,6 +21,7 @@
  19
  20  #include <linux/sysdev.h>
  21  #include <asm/uv/bios.h>
  22 +#include <asm/genapic.h>
  23
  24  struct kobject *sgi_uv_kobj;
  25
  26 @@ -46,6 +47,9 @@
  27  static int __init sgi_uv_sysfs_init(void)
  28  {
  29         unsigned long ret;
  30 +
  31 +       if (!is_uv_system())
  32 +               return -ENODEV;
  33
  34         if (!sgi_uv_kobj)
  35                 sgi_uv_kobj = kobject_create_and_add("sgi_uv", firmware_kobj);