MUSB_FIFOSZ_DPB
c_size |= MUSB_FIFOSZ_DPB;
hw_ep->tx_double_buffered = !!(c_size & MUSB_FIFOSZ_DPB);
hw_ep->rx_double_buffered = !!(c_size & MUSB_FIFOSZ_DPB);
hw_ep->rx_double_buffered = !!(c_size & MUSB_FIFOSZ_DPB);
return offset + (maxpacket << ((c_size & MUSB_FIFOSZ_DPB) ? 1 : 0));