From: Parav Pandit <parav@mellanox.com>
Date: Sun, 26 Jan 2020 16:26:52 +0200
Subject: RDMA/cma: Use refcount API to reflect refcount
Patch-mainline: v5.7-rc1
Git-commit: 43fb5892cdfaa3bbe170aade07d4a38086636cca
References: jsc#SLE-15176

Use a refcount_t for atomics being used as a refcount.

Link: https://lore.kernel.org/r/20200126142652.104803-8-leon@kernel.org
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/core/cma.c      |    6 +++---
 drivers/infiniband/core/cma_priv.h |    2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -842,12 +842,12 @@ found:
 
 static void cma_id_get(struct rdma_id_private *id_priv)
 {
-	atomic_inc(&id_priv->refcount);
+	refcount_inc(&id_priv->refcount);
 }
 
 static void cma_id_put(struct rdma_id_private *id_priv)
 {
-	if (atomic_dec_and_test(&id_priv->refcount))
+	if (refcount_dec_and_test(&id_priv->refcount))
 		complete(&id_priv->comp);
 }
 
@@ -875,7 +875,7 @@ struct rdma_cm_id *__rdma_create_id(stru
 	spin_lock_init(&id_priv->lock);
 	mutex_init(&id_priv->qp_mutex);
 	init_completion(&id_priv->comp);
-	atomic_set(&id_priv->refcount, 1);
+	refcount_set(&id_priv->refcount, 1);
 	mutex_init(&id_priv->handler_mutex);
 	INIT_LIST_HEAD(&id_priv->listen_list);
 	INIT_LIST_HEAD(&id_priv->mc_list);
--- a/drivers/infiniband/core/cma_priv.h
+++ b/drivers/infiniband/core/cma_priv.h
@@ -66,7 +66,7 @@ struct rdma_id_private {
 	struct mutex		qp_mutex;
 
 	struct completion	comp;
-	atomic_t		refcount;
+	refcount_t refcount;
 	struct mutex		handler_mutex;
 
 	int			backlog;