[PATCH 03/18] dmaengine: doc: client: Update for dmaengine_get_dma_device() usage
From: Peter Ujfalusi <hidden>
Date: 2020-09-30 09:14:19
Also in:
dmaengine, linux-devicetree, lkml
Subsystem:
dma generic offload engine subsystem, documentation, the rest · Maintainers:
Vinod Koul, Jonathan Corbet, Linus Torvalds
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 <redacted> --- 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.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
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