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s390/cio: use DECLARE_WAIT_QUEUE_HEAD() for wait_queue 

wait_queue_head_t can be initialized automatically with
DECLARE_WAIT_QUEUE_HEAD() rather than explicitly calling
init_waitqueue_head().

Signed-off-by: Shixin Liu <liushixin2@huawei.com>
Acked-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Shixin Liu 2021-03-29 17:40:19 +08:00 committed by Heiko Carstens
parent 1034c96c5e
commit 4e774d59e5
1 changed files with 1 additions and 2 deletions
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3
drivers/s390/cio/css.c
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@ -652,13 +652,12 @@ static void css_sch_todo(struct work_struct *work)
static struct idset *slow_subchannel_set;
static DEFINE_SPINLOCK(slow_subchannel_lock);
static wait_queue_head_t css_eval_wq;
static DECLARE_WAIT_QUEUE_HEAD(css_eval_wq);
static atomic_t css_eval_scheduled;
static int __init slow_subchannel_init(void)
{
atomic_set(&css_eval_scheduled, 0);
init_waitqueue_head(&css_eval_wq);
slow_subchannel_set = idset_sch_new();
if (!slow_subchannel_set) {
CIO_MSG_EVENT(0, "could not allocate slow subchannel set\n");