[patch 2/2] x86: watchdog - check for CPU is being supported

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[patch 2/2] x86: watchdog - check for CPU is being supported

Cyrill Gorcunov-2
This patch does check if CPU is being recongnized
before call the unreserve(). Since enable_lapic_nmi_watchdog()
does have such a check the same is make sense here too
in a sake of code consistency (but nothing more).

Signed-off-by: Cyrill Gorcunov <[hidden email]>
---

Index: linux-2.6.git/arch/x86/kernel/cpu/perfctr-watchdog.c
====================================================================
--- linux-2.6.git.orig/arch/x86/kernel/cpu/perfctr-watchdog.c 2008-06-03 20:48:26.000000000 +0400
+++ linux-2.6.git/arch/x86/kernel/cpu/perfctr-watchdog.c 2008-06-03 21:26:00.000000000 +0400
@@ -181,7 +181,9 @@ void disable_lapic_nmi_watchdog(void)
  return;
 
  on_each_cpu(stop_apic_nmi_watchdog, NULL, 0, 1);
- wd_ops->unreserve();
+
+ if (wd_ops)
+ wd_ops->unreserve();
 
  BUG_ON(atomic_read(&nmi_active) != 0);
 }

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