sc_itask
switch (fdc->sc_itask) {
printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask);
fdc->sc_itask = FDC_ITASK_NONE;
fdc->sc_itask = FDC_ITASK_SENSEI;
fdc->sc_itask = FDC_ITASK_SENSEI;
fdc->sc_itask = FDC_ITASK_DMA;
fdc->sc_itask = FDC_ITASK_RESULT;
fdc->sc_itask = FDC_ITASK_SENSEI;
fdc->sc_itask = FDC_ITASK_SENSEI;
fdc->sc_itask = FDC_ITASK_NONE;
struct task sc_itask;
task_set(&sc->sc_itask, carp_if_linkstate, sc);
if_linkstatehook_add(&sc->sc_if, &sc->sc_itask);
if_linkstatehook_del(&sc->sc_if, &sc->sc_itask);