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[03/18] dmaengine: doc: client: Update for dmaengine_get_dma_device() usage

Message ID 20200930091412.8020-4-peter.ujfalusi@ti.com (mailing list archive)
State New, archived
Headers show
Series dmaengine/soc: k3-udma: Add support for BCDMA and PKTDMA | expand

Commit Message

Peter Ujfalusi Sept. 30, 2020, 9:13 a.m. UTC 
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>
---
 Documentation/driver-api/dmaengine/client.rst | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
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Patch

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 */