UDC_EP0OUT_BUFF_SIZE
pch_udc_ep_set_bufsz(ep, UDC_EP0OUT_BUFF_SIZE, ep->in);
ep0out_buf = devm_kzalloc(&dev->pdev->dev, UDC_EP0OUT_BUFF_SIZE * 4,
UDC_EP0OUT_BUFF_SIZE * 4,
UDC_EP0OUT_BUFF_SIZE * 4, DMA_FROM_DEVICE);