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dmaengine: sh: usb-dmac: 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 19:32:21 +08:00
committed by Vinod Koul
parent 1dc1b29aa1
commit c54d86641f
1 changed files with 2 additions and 4 deletions
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6
drivers/dma/sh/usb-dmac.c
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@@ -636,9 +636,6 @@ static bool usb_dmac_chan_filter(struct dma_chan *chan, void *arg)
struct usb_dmac_chan *uchan = to_usb_dmac_chan(chan); struct usb_dmac_chan *uchan = to_usb_dmac_chan(chan);
struct of_phandle_args *dma_spec = arg; struct of_phandle_args *dma_spec = arg;
if (dma_spec->np != chan->device->dev->of_node)
return false;
/* USB-DMAC should be used with fixed usb controller's FIFO */ /* USB-DMAC should be used with fixed usb controller's FIFO */
if (uchan->index != dma_spec->args[0]) if (uchan->index != dma_spec->args[0])
return false; return false;
@@ -659,7 +656,8 @@ static struct dma_chan *usb_dmac_of_xlate(struct of_phandle_args *dma_spec,
dma_cap_zero(mask); dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask); dma_cap_set(DMA_SLAVE, mask);
chan = dma_request_channel(mask, usb_dmac_chan_filter, dma_spec); chan = __dma_request_channel(&mask, usb_dmac_chan_filter, dma_spec,
ofdma->of_node);
if (!chan) if (!chan)
return NULL; return NULL;