[PATCH v3 09/20] dmaengine: doc: client: Update for dmaengine_get_dma_device() usage

Peter Ujfalusi peter.ujfalusi at ti.com
Tue Dec 8 04:04:29 EST 2020


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 at ti.com>
---
 Documentation/driver-api/dmaengine/client.rst | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

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 */
 
-- 
Peter

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
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