*** TEST 40 ***
Init - rtems_io_register_driver - init == NULL, open != NULL OK
Init - Major slot returned = 2
Init - rtems_io_register_driver - init == NULL, open != NULL OK
Init - Major slot returned = 3
Init - rtems_io_register_driver - used slot
Init - rtems_io_unregister_driver - used slot
Init - rtems_io_register_driver - free slot
Init - rtems_io_register_driver - called from interrupt context
Init - rtems_io_register_driver - invalid registered major pointer
Init - rtems_io_register_driver - invalid driver table pointer
Init - rtems_io_register_driver - invalid empty driver table
Init - rtems_io_register_driver - invalid major
Init - rtems_io_unregister_driver - called from interrupt context
Init - rtems_io_unregister_driver - invalid major number
*** END OF TEST 40 ***