fd_do_rw
ret = fd_do_rw(cmd, pfile, dev->prot_length,
ret = fd_do_rw(cmd, file, dev->dev_attrib.block_size,
ret = fd_do_rw(cmd, file, dev->dev_attrib.block_size,
ret = fd_do_rw(cmd, pfile, dev->prot_length,