SYNUSB_RECV_SIZE
synusb->data = usb_alloc_coherent(udev, SYNUSB_RECV_SIZE, GFP_KERNEL,
synusb->data, SYNUSB_RECV_SIZE,
usb_free_coherent(udev, SYNUSB_RECV_SIZE, synusb->data,
usb_free_coherent(udev, SYNUSB_RECV_SIZE, synusb->data,