is_dma_copy_aligned
if (unmap && is_dma_copy_aligned(device, src_offset, dest_offset, len)) {
if (!is_dma_copy_aligned(dchan->device, buf_addr, 0, buf_len)) {
if (!is_dma_copy_aligned(device, pay_off, buff_off, len))
if (!is_dma_copy_aligned(device, buff_off, dest_off, len))
if (!is_dma_copy_aligned(pthr->dma_chan->device, offset_in_page(src),