UVIDEO_IXFERS
sc->sc_xfer, uvideo_isoc_config, UVIDEO_IXFERS, sc,
for (i = 0; i < UVIDEO_IXFERS; i++)
for (i = 0; i < UVIDEO_IXFERS; i++)
static const struct usb_config uvideo_isoc_config[UVIDEO_IXFERS] = {