Modern Character Devices (Screenplay)

jjj

• device_create() between cdev_init() and cdev_add()

  • ⟶ chances are that kernel is unhappy with uninitialized data.

  • Nobody knows though

• device_destroy(), emphasize on reverse order from init()

• Effect:

  • /sys/class/my_class

  • /dev/my_driver-0 ⟶ no manual mknod!