1 files changed, 16 insertions, 6 deletions

diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 054a67cca9da..140dce750450 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -418,19 +418,22 @@ static int watchdog_prepare_cpu(int cpu)
 static int watchdog_enable(int cpu)
 {
         struct task_struct *p = per_cpu(softlockup_watchdog, cpu);
-        int err;
+        int err = 0;
 
         /* enable the perf event */
         err = watchdog_nmi_enable(cpu);
-        if (err)
-                return err;
+
+        /* Regardless of err above, fall through and start softlockup */
 
         /* create the watchdog thread */
         if (!p) {
                 p = kthread_create(watchdog, (void *)(unsigned long)cpu, "watchdog/%d", cpu);
                 if (IS_ERR(p)) {
                         printk(KERN_ERR "softlockup watchdog for %i failed\n", cpu);
-                        return PTR_ERR(p);
+                        if (!err)
+                                /* if hardlockup hasn't already set this */
+                                err = PTR_ERR(p);
+                        goto out;
                 }
                 kthread_bind(p, cpu);
                 per_cpu(watchdog_touch_ts, cpu) = 0;
@@ -438,7 +441,8 @@ static int watchdog_enable(int cpu)
                 wake_up_process(p);
         }
 
-        return 0;
+out:
+        return err;
 }
 
 static void watchdog_disable(int cpu)
@@ -550,7 +554,13 @@ cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
                 break;
 #endif /* CONFIG_HOTPLUG_CPU */
         }
-        return notifier_from_errno(err);
+
+        /*
+         * hardlockup and softlockup are not important enough
+         * to block cpu bring up.  Just always succeed and
+         * rely on printk output to flag problems.
+         */
+        return NOTIFY_OK;
 }
 
 static struct notifier_block __cpuinitdata cpu_nfb = {