RDMA/cma: Use refcount API to reflect refcount

Use the refcount variant to capture the reference counting of the cma
device structure.

Link: https://lore.kernel.org/r/20200126142652.104803-6-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>

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 7e16d1b..d43f7ce 100644 (file)
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -199,7 +199,7 @@ struct cma_device {
        struct list_head        list;
        struct ib_device        *device;
        struct completion       comp;
-       atomic_t                refcount;
+       refcount_t refcount;
        struct list_head        id_list;
        enum ib_gid_type        *default_gid_type;
        u8                      *default_roce_tos;
@@ -249,12 +249,12 @@ enum {
 
 void cma_dev_get(struct cma_device *cma_dev)
 {
-       atomic_inc(&cma_dev->refcount);
+       refcount_inc(&cma_dev->refcount);
 }
 
 void cma_dev_put(struct cma_device *cma_dev)
 {
-       if (atomic_dec_and_test(&cma_dev->refcount))
+       if (refcount_dec_and_test(&cma_dev->refcount))
                complete(&cma_dev->comp);
 }
 
@@ -754,7 +754,6 @@ static int cma_iw_acquire_dev(struct rdma_id_private *id_priv,
 
        list_for_each_entry(cma_dev, &dev_list, list) {
                rdma_for_each_port (cma_dev->device, port) {
-
                        if (listen_id_priv->cma_dev == cma_dev &&
                            listen_id_priv->id.port_num == port)
                                continue;
@@ -4657,7 +4656,7 @@ static void cma_add_one(struct ib_device *device)
        }
 
        init_completion(&cma_dev->comp);
-       atomic_set(&cma_dev->refcount, 1);
+       refcount_set(&cma_dev->refcount, 1);
        INIT_LIST_HEAD(&cma_dev->id_list);
        ib_set_client_data(device, &cma_client, cma_dev);