On Fri, Apr 20, 2018 at 7:42 PM, Mauro Carvalho Chehab
<mchehab@xxxxxxxxxxxxxxxx> wrote:
> The virt_to_bus/bus_to_virt macros are arch-specific. Some
> archs don't support it. Yet, as it is interesting to allow
> doing compilation tests on non-ia32/ia64 archs, provide a
> fallback for such archs.
>
> While here, enable COMPILE_TEST for two media drivers that
> depends on it.
>
> Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
I'd prefer not to do this: virt_to_bus() is deprecated for good reasons,
and I'd rather see the drivers fixed to use dma-mapping.h correctly.
One problem with your patch is that not all architectures include
asm-generic/io.h, so it likely breaks allmodconfig builds on architectures
that don't use that file and don't provide virt_to_bus() either.
Arnd
