inifiniband: pass dev_t to class core

@@ -518,15 +518,6 @@ static struct ib_client umad_client = {
 	.remove = ib_umad_remove_one
 };
 
-static ssize_t show_dev(struct class_device *class_dev, char *buf)
-{
-	struct ib_umad_port *port =
-		container_of(class_dev, struct ib_umad_port, class_dev);
-
-	return print_dev_t(buf, port->dev.dev);
-}
-static CLASS_DEVICE_ATTR(dev, S_IRUGO, show_dev, NULL);
-
 static ssize_t show_ibdev(struct class_device *class_dev, char *buf)
 {
 	struct ib_umad_port *port =

@@ -625,16 +616,13 @@ static void ib_umad_add_one(struct ib_de
 			     umad_dev->port[i - s].devnum, 1))
 			goto err;
 
-		umad_dev->port[i - s].class_dev.class = &umad_class;
+		umad_dev->port[i - s].class_dev.devt  = umad_dev->port[i - s].dev.dev;
 		umad_dev->port[i - s].class_dev.dev   = device->dma_device;
 		snprintf(umad_dev->port[i - s].class_dev.class_id,
 			 BUS_ID_SIZE, "umad%d", umad_dev->port[i - s].devnum);
 		if (class_device_register(&umad_dev->port[i - s].class_dev))
 			goto err_class;
 
-		if (class_device_create_file(&umad_dev->port[i - s].class_dev,
-					     &class_device_attr_dev))
-			goto err_class;
 		if (class_device_create_file(&umad_dev->port[i - s].class_dev,
 					     &class_device_attr_ibdev))
 			goto err_class;