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-rw-r--r--kernel/cpu.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 09207c772c2..0690ac27a25 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -137,8 +137,12 @@ int __ref register_cpu_notifier(struct notifier_block *nb)
static int __cpu_notify(unsigned long val, void *v, int nr_to_call,
int *nr_calls)
{
- return __raw_notifier_call_chain(&cpu_chain, val, v, nr_to_call,
+ int ret;
+
+ ret = __raw_notifier_call_chain(&cpu_chain, val, v, nr_to_call,
nr_calls);
+
+ return notifier_to_errno(ret);
}
static int cpu_notify(unsigned long val, void *v)
@@ -151,7 +155,7 @@ static void cpu_notify_nofail(unsigned long val, void *v)
int err;
err = cpu_notify(val, v);
- BUG_ON(err == NOTIFY_BAD);
+ BUG_ON(err);
}
#ifdef CONFIG_HOTPLUG_CPU
@@ -232,14 +236,13 @@ static int __ref _cpu_down(unsigned int cpu, int tasks_frozen)
cpu_hotplug_begin();
set_cpu_active(cpu, false);
err = __cpu_notify(CPU_DOWN_PREPARE | mod, hcpu, -1, &nr_calls);
- if (err == NOTIFY_BAD) {
+ if (err) {
set_cpu_active(cpu, true);
nr_calls--;
__cpu_notify(CPU_DOWN_FAILED | mod, hcpu, nr_calls, NULL);
printk("%s: attempt to take down CPU %u failed\n",
__func__, cpu);
- err = -EINVAL;
goto out_release;
}
@@ -304,11 +307,10 @@ static int __cpuinit _cpu_up(unsigned int cpu, int tasks_frozen)
cpu_hotplug_begin();
ret = __cpu_notify(CPU_UP_PREPARE | mod, hcpu, -1, &nr_calls);
- if (ret == NOTIFY_BAD) {
+ if (ret) {
nr_calls--;
printk("%s: attempt to bring up CPU %u failed\n",
__func__, cpu);
- ret = -EINVAL;
goto out_notify;
}