workqueue: Use wake_up_worker() to wake up first idle worker

Use wrapper function wake_up_worker() to wake up first idle worker.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Lai Jiangshan <jiangshanlai@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
1 file changed