rem: remove_io_interrupt_handler(0x01, &handle_keyboard_interrupt, NULL);  delete_sem(keyboard_sem); mutex_destroy(&keyboard_read_mutex);
context: uninit_driver(){	remove_io_interrupt_handler(0x01, &handle_keyboard_interrupt, NULL);	delete_sem(keyboard_sem);	mutex_destroy(&keyboard_read_mutex);	put_module(B_ISA_MODULE_NAME);}