Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [PATCH v2 1/3] dmaengine: Add support for APM X-Gene SoC DMA engine driver | Date | Wed, 14 Jan 2015 12:54:25 +0100 |
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On Wednesday 14 January 2015 14:56:33 Rameshwar Sahu wrote: > > > Also add the correct dma-ranges property in the parent, or else this will > > fail in the future once we add proper checks to dma_set_mask. > > I see arch/arm64 kernel doesn't use dma range value parsed from > dma-range property currently, I will check it more. > It doesn't use dma_pfn_offset value calculated by the dma-ranges in > dma mapping API. > dma-ranges value should test properly before adding. > Is there any use to add this dma-ranges properly if arch code doesn't support ??
Of course: the dt needs to describe the hardware correctly. This is just a bug in the current arm64 code and it will soon be fixed.
Arnd
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