[PATCH] check return value of cpu_callback

[pandora-kernel.git] / kernel / softlockup.c

diff --git a/kernel/softlockup.c b/kernel/softlockup.c
index 03e6a2b..50afeb8 100644 (file)
--- a/kernel/softlockup.c
+++ b/kernel/softlockup.c
@@ -149,8 +149,9 @@ static struct notifier_block __cpuinitdata cpu_nfb = {
 __init void spawn_softlockup_task(void)
 {
        void *cpu = (void *)(long)smp_processor_id();
+       int err = cpu_callback(&cpu_nfb, CPU_UP_PREPARE, cpu);
 
-       cpu_callback(&cpu_nfb, CPU_UP_PREPARE, cpu);
+       BUG_ON(err == NOTIFY_BAD);
        cpu_callback(&cpu_nfb, CPU_ONLINE, cpu);
        register_cpu_notifier(&cpu_nfb);