USBD_SHORT_XFER
if (err == USBD_NORMAL_COMPLETION || err == USBD_SHORT_XFER) {
if (err != USBD_NORMAL_COMPLETION && err != USBD_SHORT_XFER) {
if (err != USBD_NORMAL_COMPLETION && err != USBD_SHORT_XFER)
if (err == USBD_NORMAL_COMPLETION || err == USBD_SHORT_XFER) {
return (USBD_SHORT_XFER);
xfer->status = USBD_SHORT_XFER;