ret = cdev_add(&dv1394_cdev, IEEE1394_DV1394_DEV, 16);
if (ret) {
printk(KERN_ERR "dv1394: unable to register character device\n");
ret = cdev_add(&dv1394_cdev, IEEE1394_DV1394_DEV, 16);
if (ret) {
printk(KERN_ERR "dv1394: unable to register character device\n");