/* get data */
usbd_copy_out(pc, offset, sc->sc_buffer, len);
if (len == 8 && sc->sc_buffer[0] == 0) {
for (i = 2; i != 8; ++i)
if (sc->sc_buffer[i] != 1)
break;
if (i == 8) {
DPRINTF("Ignoring key rollover packet\n");
goto tr_setup;
}
/* clear temporary storage */
memset(&sc->sc_ndata, 0, sizeof(sc->sc_ndata));