Use to_delayed_work() instead of open-coding it.

Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
---
 drivers/scsi/mvsas/mv_sas.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
index 52ac10226cb0..9e48b8efc375 100644
--- a/drivers/scsi/mvsas/mv_sas.c
+++ b/drivers/scsi/mvsas/mv_sas.c
@@ -1693,7 +1693,7 @@ static void mvs_phy_disconnected(struct mvs_phy *phy)
 
 static void mvs_work_queue(struct work_struct *work)
 {
-	struct delayed_work *dw = container_of(work, struct delayed_work, work);
+	struct delayed_work *dw = to_delayed_work(work);
 	struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q);
 	struct mvs_info *mvi = mwq->mvi;
 	unsigned long flags;
-- 
2.25.1