+ static const char name[] = "uio";
+ struct cdev *cdev = NULL;
+ dev_t uio_dev = 0;
+ int result;
+
+ result = alloc_chrdev_region(&uio_dev, 0, UIO_MAX_DEVICES, name);
+ if (result)
+ goto out;
+
+ result = -ENOMEM;
+ cdev = cdev_alloc();
+ if (!cdev)
+ goto out_unregister;
+
+ cdev->owner = THIS_MODULE;
+ cdev->ops = &uio_fops;
+ kobject_set_name(&cdev->kobj, "%s", name);
+
+ result = cdev_add(cdev, uio_dev, UIO_MAX_DEVICES);
+ if (result)
+ goto out_put;
+
+ uio_major = MAJOR(uio_dev);
+ uio_cdev = cdev;
+ result = 0;
+out:
+ return result;
+out_put:
+ kobject_put(&cdev->kobj);
+out_unregister:
+ unregister_chrdev_region(uio_dev, UIO_MAX_DEVICES);
+ goto out;