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dmaengine: mxs-dma: Let the core do the device node validation

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Let the DMA engine core do the device node validation instead of drivers.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Baolin Wang 2019-05-20 19:32:19 +08:00 committed by Vinod Koul
parent 1d967195fd
commit caf5e3e6e1
1 changed files with 2 additions and 6 deletions
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8
drivers/dma/mxs-dma.c
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@ -716,7 +716,6 @@ static int __init mxs_dma_init(struct mxs_dma_engine *mxs_dma)
} }
struct mxs_dma_filter_param { struct mxs_dma_filter_param {
struct device_node *of_node;
unsigned int chan_id; unsigned int chan_id;
}; };
@ -727,9 +726,6 @@ static bool mxs_dma_filter_fn(struct dma_chan *chan, void *fn_param)
struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma; struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
int chan_irq; int chan_irq;
if (mxs_dma->dma_device.dev->of_node != param->of_node)
return false;
if (chan->chan_id != param->chan_id) if (chan->chan_id != param->chan_id)
return false; return false;
@ -752,13 +748,13 @@ static struct dma_chan *mxs_dma_xlate(struct of_phandle_args *dma_spec,
if (dma_spec->args_count != 1) if (dma_spec->args_count != 1)
return NULL; return NULL;
param.of_node = ofdma->of_node;
param.chan_id = dma_spec->args[0]; param.chan_id = dma_spec->args[0];
if (param.chan_id >= mxs_dma->nr_channels) if (param.chan_id >= mxs_dma->nr_channels)
return NULL; return NULL;
return dma_request_channel(mask, mxs_dma_filter_fn, &param); return __dma_request_channel(&mask, mxs_dma_filter_fn, &param,
ofdma->of_node);
} }
static int __init mxs_dma_probe(struct platform_device *pdev) static int __init mxs_dma_probe(struct platform_device *pdev)