linux-kernel - [PATCH -next 2/2] s390/cio: use DECLARE_WAIT_QUEUE_HEAD() for wait

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Message-ID: <20210329094019.67044-2-liushixin2@huawei.com>
Date:   Mon, 29 Mar 2021 17:40:19 +0800
From:   Shixin Liu <liushixin2@...wei.com>
To:     Vineeth Vijayan <vneethv@...ux.ibm.com>,
        Peter Oberparleiter <oberpar@...ux.ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>
CC:     <linux-s390@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Shixin Liu <liushixin2@...wei.com>
Subject: [PATCH -next 2/2] 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@...wei.com>
---
 drivers/s390/cio/css.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index f01ef6325039..a974943c27da 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -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");
-- 
2.25.1