Bluetooth: Added /proc/net/hci via bt_procfs_init()

Added /proc/net/hci via bt_procfs_init().
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

net/bluetooth/hci_sock.c

@@ -1100,21 +1100,30 @@ int __init hci_sock_init(void)
 		return err;
 
 	err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops);
-	if (err < 0)
+	if (err < 0) {
+		BT_ERR("HCI socket registration failed");
 		goto error;
+	}
+
+	err = bt_procfs_init(THIS_MODULE, &init_net, "hci", &hci_sk_list, NULL);
+	if (err < 0) {
+		BT_ERR("Failed to create HCI proc file");
+		bt_sock_unregister(BTPROTO_HCI);
+		goto error;
+	}
 
 	BT_INFO("HCI socket layer initialized");
 
 	return 0;
 
 error:
-	BT_ERR("HCI socket registration failed");
 	proto_unregister(&hci_sk_proto);
 	return err;
 }
 
 void hci_sock_cleanup(void)
 {
+	bt_procfs_cleanup(&init_net, "hci");
 	if (bt_sock_unregister(BTPROTO_HCI) < 0)
 		BT_ERR("HCI socket unregistration failed");