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

Stephen Rothwell
2020-05-07T12:17:32Z

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Hi all,

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.

--
Cheers,
Stephen Rothwell

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