dmaengine_get_dma_device
ddev = dmaengine_get_dma_device(pdata->dma_tx);
tx_dev = dmaengine_get_dma_device(dev_data->dma_aes_tx);
rx_dev = dmaengine_get_dma_device(dev_data->dma_aes_rx);
dma_dev = dmaengine_get_dma_device(chan);
ring_cfg.dma_dev = dmaengine_get_dma_device(&uc->vc.chan);
ring_cfg.dma_dev = dmaengine_get_dma_device(&uc->vc.chan);
ring_cfg.dma_dev = dmaengine_get_dma_device(&uc->vc.chan);
uc->dma_dev = dmaengine_get_dma_device(chan);
uc->dma_dev = dmaengine_get_dma_device(chan);
priv->buffer = dmam_alloc_attrs(dmaengine_get_dma_device(priv->dma_chan),
q->dev = dmaengine_get_dma_device(csi->dma.chan);
dma_get_max_seg_size(dmaengine_get_dma_device(nvme_epf->
dma_get_max_seg_size(dmaengine_get_dma_device(nvme_epf->
dma_dev = dmaengine_get_dma_device(chan);