AT_XDMAC_MBR_UBC_UBLEN_MAX
if (chunk->size >= (AT_XDMAC_MBR_UBC_UBLEN_MAX << dwidth)) {
AT_XDMAC_MBR_UBC_UBLEN_MAX << dwidth);
if (remaining_size >= AT_XDMAC_MBR_UBC_UBLEN_MAX << dwidth)
xfer_size = AT_XDMAC_MBR_UBC_UBLEN_MAX << dwidth;
if (len >= (AT_XDMAC_MBR_UBC_UBLEN_MAX << dwidth)) {