EVT_SYN
case EVT_SYN:
sc->sc_sync = (type == EVT_SYN);
uwacom_event(usbwcmp, EVT_SYN, SYN_REPORT, 0);
uwacom_event(usbwcmp, EVT_SYN, SYN_REPORT, 0);
BM_SET_BIT(sc->sc_bm[0], EVT_SYN);