Re: linux-next: build failure after merge of the akpm-current tree

Stephen Rothwell
2020-05-08T01:43:44Z

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Hi all,

On Thu, 7 May 2020 22:17:21 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:
>
> After merging the akpm-current tree, today's linux-next build (arm
> collie_defconfig and many others) failed like this:
>
> arch/arm/mm/dma-mapping.c: In function 'dma_cache_maint_page':
> arch/arm/mm/dma-mapping.c:892:6: error: implicit declaration of function 'kunmap_high' [-Werror=implicit-function-declaration]
> kunmap_high(page);
> ^
> arch/arm/mm/flush.c: In function '__flush_dcache_page':
> arch/arm/mm/flush.c:221:6: error: implicit declaration of function 'kunmap_high' [-Werror=implicit-function-declaration]
> kunmap_high(page + i);
> ^
>
> Caused by commit
>
> 6b66ab470b4d ("arch/kunmap: remove duplicate kunmap implementations")
>
> kunmap_high() is now only declared when CONFIG_HIGHMEM is defined.

Is there anything that can be done quickly about this as it broke a
large number of builds ...

--
Cheers,
Stephen Rothwell

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