464 	struct pti_tty *pti_tty_data;  in pti_tty_install()  local
468 		pti_tty_data = kmalloc(sizeof(struct pti_tty), GFP_KERNEL);  in pti_tty_install()
469 		if (pti_tty_data == NULL)  in pti_tty_install()
473 			pti_tty_data->mc = pti_request_masterchannel(0, NULL);  in pti_tty_install()
475 			pti_tty_data->mc = pti_request_masterchannel(2, NULL);  in pti_tty_install()
477 		if (pti_tty_data->mc == NULL) {  in pti_tty_install()
478 			kfree(pti_tty_data);  in pti_tty_install()
481 		tty->driver_data = pti_tty_data;  in pti_tty_install()
495 	struct pti_tty *pti_tty_data = tty->driver_data;  in pti_tty_cleanup()  local
496 	if (pti_tty_data == NULL)  in pti_tty_cleanup()
498 	pti_release_masterchannel(pti_tty_data->mc);  in pti_tty_cleanup()
499 	kfree(pti_tty_data);  in pti_tty_cleanup()
519 	struct pti_tty *pti_tty_data = tty->driver_data;  in pti_tty_driver_write()  local
520 	if ((pti_tty_data != NULL) && (pti_tty_data->mc != NULL)) {  in pti_tty_driver_write()
521 		pti_write_to_aperture(pti_tty_data->mc, (u8 *)buf, len);  in pti_tty_driver_write()