From: Rafael J. Wysocki <rjw@sisk.pl>
Date: Thu, 27 May 2010 20:16:22 +0000 (+0200)
Subject: CPU: Avoid using unititialized error variable in disable_nonboot_cpus()
X-Git-Tag: v2.6.35-rc1~12
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e9a5f426b85e429bffaee4e0b086b1e742a39fa6;p=profile%2Fivi%2Fkernel-x86-ivi.git

CPU: Avoid using unititialized error variable in disable_nonboot_cpus()

If there's only one CPU online when disable_nonboot_cpus() is called,
the error variable will not be initialized and that may lead to
erroneous behavior.  Fix this issue by initializing error in
disable_nonboot_cpus() as appropriate.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/kernel/cpu.c b/kernel/cpu.c
index 3097382eb44..8b92539b475 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -394,7 +394,7 @@ static cpumask_var_t frozen_cpus;
 
 int disable_nonboot_cpus(void)
 {
-	int cpu, first_cpu, error;
+	int cpu, first_cpu, error = 0;
 
 	cpu_maps_update_begin();
 	first_cpu = cpumask_first(cpu_online_mask);