Messages in this thread |  | | Date | Mon, 7 Jun 2021 11:04:56 +0100 | From | Christoph Hellwig <> | Subject | Re: [PATCH v3] usb: dwc3: support 64 bit DMA in platform driver |
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On Mon, Jun 07, 2021 at 09:25:43AM +0200, Arnd Bergmann wrote: > This will now fail on machines with dwc3 connected to a 32-bit bus (or a > bus that is accidentally not annotated as supporting 64-bit) when there is > some memory that is not addressable through that bus.
No, it won't. dma_set_mask_and_coherent with a 64-bit mask will never fail if dev->dma_mask is non-NULL.
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