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-rw-r--r--kernel/workqueue.c14
1 files changed, 4 insertions, 10 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 2f445833ae3..a35afdbc016 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -991,8 +991,8 @@ static void do_work_for_cpu(struct work_struct *w)
* @fn: the function to run
* @arg: the function arg
*
- * This will return -EINVAL in the cpu is not online, or the return value
- * of @fn otherwise.
+ * This will return the value @fn returns.
+ * It is up to the caller to ensure that the cpu doesn't go offline.
*/
long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg)
{
@@ -1001,14 +1001,8 @@ long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg)
INIT_WORK(&wfc.work, do_work_for_cpu);
wfc.fn = fn;
wfc.arg = arg;
- get_online_cpus();
- if (unlikely(!cpu_online(cpu)))
- wfc.ret = -EINVAL;
- else {
- schedule_work_on(cpu, &wfc.work);
- flush_work(&wfc.work);
- }
- put_online_cpus();
+ schedule_work_on(cpu, &wfc.work);
+ flush_work(&wfc.work);
return wfc.ret;
}