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| author | Baolin Wang <baolin.wang@linaro.org> | 2019-05-20 19:32:14 +0800 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2019-05-27 11:23:52 +0530 |
| commit | f5151311c3f37f6edc85b2253ccf6d3e2a4c4c26 (patch) | |
| tree | 9c9a6c10e2377a16f1eb678605546875f210c8e8 /drivers/dma/of-dma.c | |
| parent | f935d7dc8125e231e3e1620d97b2367b008889f4 (diff) | |
| download | lwn-f5151311c3f37f6edc85b2253ccf6d3e2a4c4c26.tar.gz lwn-f5151311c3f37f6edc85b2253ccf6d3e2a4c4c26.zip | |
dmaengine: Add matching device node validation in __dma_request_channel()
When user try to request one DMA channel by __dma_request_channel(), it won't
validate if it is the correct DMA device to request, that will lead each DMA
engine driver to validate the correct device node in their filter function
if it is necessary.
Thus we can add the matching device node validation in the DMA engine core,
to remove all of device node validation in the drivers.
Tested-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/of-dma.c')
| -rw-r--r-- | drivers/dma/of-dma.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/dma/of-dma.c b/drivers/dma/of-dma.c index 91fd395c90c4..6b43d04da05d 100644 --- a/drivers/dma/of-dma.c +++ b/drivers/dma/of-dma.c @@ -316,8 +316,8 @@ struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec, if (count != 1) return NULL; - return dma_request_channel(info->dma_cap, info->filter_fn, - &dma_spec->args[0]); + return __dma_request_channel(&info->dma_cap, info->filter_fn, + &dma_spec->args[0], dma_spec->np); } EXPORT_SYMBOL_GPL(of_dma_simple_xlate); |