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| author |   Peter Ujfalusi <peter.ujfalusi@ti.com> | 2020-12-08 11:04:29 +0200 |
|---|---|---|
| committer |   Vinod Koul <vkoul@kernel.org> | 2020-12-11 21:20:08 +0530 |
| commit | f082c6df970e6e9aa97af35e826fec824007fbae (patch) | |
| tree | aeeff9c11ac9f0959ed1062f9a26bdfe49f1e02e /Documentation/driver-api/dmaengine | |
| parent | dmaengine: Add support for per channel coherency handling (diff) | |
| download | linux-dev-f082c6df970e6e9aa97af35e826fec824007fbae.tar.xz linux-dev-f082c6df970e6e9aa97af35e826fec824007fbae.zip | |
dmaengine: doc: client: Update for dmaengine_get_dma_device() usage
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>
Diffstat (limited to 'Documentation/driver-api/dmaengine')
| -rw-r--r-- | Documentation/driver-api/dmaengine/client.rst | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/driver-api/dmaengine/client.rst b/Documentation/driver-api/dmaengine/client.rst index 09a3f66dcd26..bfd057b21a00 100644 --- a/Documentation/driver-api/dmaengine/client.rst +++ b/Documentation/driver-api/dmaengine/client.rst @@ -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 */ |