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dmaengine: doc: client: Update for dmaengine_get_dma_device() usage

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Client drivers should use the dmaengine_get_dma_device(chan) to get the
device pointer which should be used for DMA API for allocations and
mapping.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20201208090440.31792-10-peter.ujfalusi@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Peter Ujfalusi 2020-12-08 11:04:29 +02:00 committed by Vinod Koul
parent ab650ef6d5
commit f082c6df97
1 changed files with 3 additions and 1 deletions
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4
Documentation/driver-api/dmaengine/client.rst
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@ -120,7 +120,9 @@ The details of these operations are:
.. code-block:: c
nr_sg = dma_map_sg(chan->device->dev, sgl, sg_len);
struct device *dma_dev = dmaengine_get_dma_device(chan);
nr_sg = dma_map_sg(dma_dev, sgl, sg_len);
if (nr_sg == 0)
/* error */