Re: [PATCH] dma-mapping: Stub out dma_{alloc,free,map}_pages() API

[Mark Brown]

On Mon, Jun 16, 2025 at 01:29:27PM +0200, Christoph Hellwig wrote:
> On Mon, Jun 16, 2025 at 12:17:49PM +0100, James Clark wrote:

> > The implementations are in mapping.c which requires HAS_DMA so stub them
> > out if not present. This is required for some drivers to pass randconfig
> > builds.

> No.  Just add the proper IS_ENABLED checks in the callers.  While these
> kinds of stubs used to be popular they are really nasty in that the
> calls unexpectedly just fail without the right depends.

The issue with HAS_DMA is that essentially all platforms have and rely
on DMA.  This ends up just being painful noise from the buildbots when
they do randconfigs rather than something useful.

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