MUSB_EP0_STAGE_RX
case MUSB_EP0_STAGE_RX: /* control-OUT data */
case MUSB_EP0_STAGE_RX: return "out";
musb->ep0_state = MUSB_EP0_STAGE_RX;
case MUSB_EP0_STAGE_RX:
case MUSB_EP0_STAGE_RX:
case MUSB_EP0_STAGE_RX: /* control-OUT data */