From: Parav Pandit <parav@mellanox.com>
Date: Wed, 2 Oct 2019 15:25:17 +0300
Subject: IB/cm: Use container_of() instead of typecast
Patch-mainline: v5.5-rc1
Git-commit: 909624d8db5bbd369690749eb4c4392766f39f94
References: jsc#SLE-8449

Use container_of() macro to get to timewait info structure instead of
typecasting.

Link: https://lore.kernel.org/r/20191002122517.17721-5-leon@kernel.org
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/core/cm.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -246,7 +246,7 @@ struct cm_work {
 };
 
 struct cm_timewait_info {
-	struct cm_work work;			/* Must be first. */
+	struct cm_work work;
 	struct list_head list;
 	struct rb_node remote_qp_node;
 	struct rb_node remote_id_node;
@@ -3434,7 +3434,7 @@ static int cm_timewait_handler(struct cm
 	struct cm_id_private *cm_id_priv;
 	int ret;
 
-	timewait_info = (struct cm_timewait_info *)work;
+	timewait_info = container_of(work, struct cm_timewait_info, work);
 	spin_lock_irq(&cm.lock);
 	list_del(&timewait_info->list);
 	spin_unlock_irq(&cm.lock);