04.char/3.cdev/text

   1 #include <linux/cdev.h>
   2
   3 struct cdev
   4 cdev_init(cdev, fops)
   5 cdev * cdev_alloc()
   6 cdev->fops = fops
   7 cdev_add(cdev, dev_t, unsigned n) (n is 1 most of the time)
   8 cdev_del(cdev)
   9
  10
  11 older way!?!
  12 register_chrdev/unregister_chrdev
  13 propose new way!?!