RDMA/core: Move device addition deletion to device.c

Move core device addition and removal from sysfs.c to device.c as device.c
is more appropriate place for device management.
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/core/core_priv.h

@@ -54,6 +54,8 @@ struct pkey_index_qp_list {
 	struct list_head    qp_list;
 };
 
+extern const struct attribute_group ib_dev_attr_group;
+
 int ib_device_register_sysfs(struct ib_device *device);
 void ib_device_unregister_sysfs(struct ib_device *device);
 int ib_device_rename(struct ib_device *ibdev, const char *name);

drivers/infiniband/core/device.c

@@ -341,6 +341,8 @@ struct ib_device *_ib_alloc_device(size_t size)
 	rdma_restrack_init(device);
 
 	device->dev.class = &ib_class;
+	device->groups[0] = &ib_dev_attr_group;
+	device->dev.groups = device->groups;
 	device_initialize(&device->dev);
 
 	INIT_LIST_HEAD(&device->event_handler_list);
@@ -766,11 +768,15 @@ int ib_register_device(struct ib_device *device, const char *name)
 
 	ib_device_register_rdmacg(device);
 
+	ret = device_add(&device->dev);
+	if (ret)
+		goto cg_cleanup;
+
 	ret = ib_device_register_sysfs(device);
 	if (ret) {
 		dev_warn(&device->dev,
 			 "Couldn't register device with driver model\n");
-		goto cg_cleanup;
+		goto dev_cleanup;
 	}
 
 	ret = enable_device(device);
@@ -781,6 +787,8 @@ int ib_register_device(struct ib_device *device, const char *name)
 
 sysfs_cleanup:
 	ib_device_unregister_sysfs(device);
+dev_cleanup:
+	device_del(&device->dev);
 cg_cleanup:
 	ib_device_unregister_rdmacg(device);
 	ib_cache_cleanup_one(device);
@@ -800,6 +808,7 @@ void ib_unregister_device(struct ib_device *device)
 {
 	disable_device(device);
 	ib_device_unregister_sysfs(device);
+	device_del(&device->dev);
 	ib_device_unregister_rdmacg(device);
 	ib_cache_cleanup_one(device);
 	release_name(device);

drivers/infiniband/core/sysfs.c

@@ -1275,7 +1275,7 @@ static struct attribute *ib_dev_attrs[] = {
 	NULL,
 };
 
-static const struct attribute_group dev_attr_group = {
+const struct attribute_group ib_dev_attr_group = {
 	.attrs = ib_dev_attrs,
 };
 
@@ -1338,18 +1338,10 @@ int ib_device_register_sysfs(struct ib_device *device)
 {
 	int ret;
 
-	device->groups[0] = &dev_attr_group;
-	device->dev.groups = device->groups;
-
-	ret = device_add(&device->dev);
+	ret = ib_setup_port_attrs(device);
 	if (ret)
 		return ret;
 
-	ret = ib_setup_port_attrs(device);
-	if (ret) {
-		device_del(&device->dev);
-		return ret;
-	}
 	if (device->ops.alloc_hw_stats)
 		setup_hw_stats(device, NULL, 0);
 
@@ -1363,6 +1355,4 @@ void ib_device_unregister_sysfs(struct ib_device *device)
 	kfree(device->hw_stats);
 
 	ib_free_port_attrs(device);
-	/* Balances with device_add */
-	device_del(&device->dev);
 }