This looks reasonable to me, I'd be happy to pick it up. Can you send it as a series with the reverts?
- [PATCH/RFC] dma-mapping: Provide dummy set_dma_ops() fo... Geert Uytterhoeven
- Re: [PATCH/RFC] dma-mapping: Provide dummy set_dma... Arnd Bergmann
- Re: [PATCH/RFC] dma-mapping: Provide dummy set_dma... Christoph Hellwig
- Re: [PATCH/RFC] dma-mapping: Provide dummy set... Robin Murphy
- Re: [PATCH/RFC] dma-mapping: Provide dummy... Christoph Hellwig
