_sdio_align_size
sz = _sdio_align_size(sz);
blk_sz = _sdio_align_size(blk_sz);
byte_sz = _sdio_align_size(sz % func->cur_blksize);
chunk_sz = _sdio_align_size(sdio_max_byte_size(func));
byte_sz = _sdio_align_size(byte_sz);