Messages in this thread | | | Date | Tue, 27 Aug 2019 13:55:41 +0200 | From | Christoph Hellwig <> | Subject | Re: [PATCH v2 2/2] dma-contiguous: Use fallback alloc_pages for single pages |
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On Tue, Aug 27, 2019 at 06:03:14PM +0900, Masahiro Yamada wrote: > Yes, this makes my driver working again > when CONFIG_DMA_CMA=y. > > > If I apply the following, my driver gets back working > irrespective of CONFIG_DMA_CMA.
That sounds a lot like the device simply isn't 64-bit DMA capable, and previously always got CMA allocations under the limit it actually supported. I suggest that you submit this quirk to the mmc maintainers.
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