#include 

 int init_module()
 {
  /* request a major: does nothing if devfs is used */
  result = devfs_register_chrdev(major, "name", &fops);
  if (result < 0) return result;

  /* register using devfs: does nothing if not in use */
  devfs_register(NULL, "name", /* .... */ );
  return 0;
 }