From 1a1b1d1322ebd1ece405f3057cdd408bc77e391d Mon Sep 17 00:00:00 2001 From: Cyrill Gorcunov Date: Wed, 4 Jun 2008 01:00:58 +0400 Subject: [PATCH] x86: watchdog - check for CPU is being supported 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 Cc: mingo@redhat.com Cc: hpa@zytor.com Cc: macro@linux-mips.org Signed-off-by: Thomas Gleixner --- arch/x86/kernel/cpu/perfctr-watchdog.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/perfctr-watchdog.c b/arch/x86/kernel/cpu/perfctr-watchdog.c index f9ae93adffe..ddda4b64f54 100644 --- a/arch/x86/kernel/cpu/perfctr-watchdog.c +++ b/arch/x86/kernel/cpu/perfctr-watchdog.c @@ -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); } -- 2.41.0