# Re: \[PATCH 8/8\] dma-mapping: remove CONFIG\_ARCH\_NO\_COHERENT\_DMA\_MMAP

- From: Geert Uytterhoeven \<geert@linux-m68k.org\>
- Date: 2019-08-09 07:21:42 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2019/08/5682706
- Thread: https://ratatoskr.run/linux-arm-kernel/2019/08/5681963/t.md

```text
Hi Christoph,

On Thu, Aug 8, 2019 at 6:01 PM Christoph Hellwig [ref] wrote:
> CONFIG_ARCH_NO_COHERENT_DMA_MMAP is now functionally identical to
> !CONFIG_MMU, so remove the separate symbol.  The only difference is that
> arm did not set it for !CONFIG_MMU, but arm uses a separate dma mapping
> implementation including its own mmap method, which is handled by moving
> the CONFIG_MMU check in dma_can_mmap so that is only applies to the
> dma-direct case, just as the other ifdefs for it.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>

>  arch/m68k/Kconfig       |  1 -

For m68k:
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
```