iucv_external_interrupt 1609 net/iucv/iucv.c rc = register_external_interrupt(0x4000, iucv_external_interrupt); iucv_external_interrupt 1658 net/iucv/iucv.c unregister_external_interrupt(0x4000, iucv_external_interrupt); iucv_external_interrupt 1688 net/iucv/iucv.c unregister_external_interrupt(0x4000, iucv_external_interrupt);