linux-next: build warning after merge of the dma-mapping tree

[Stephen Rothwell]

Hi Christoph,

After merging the dma-mapping tree, today's linux-next build (powerpc
ppc64_defconfig) produced this warning:

drivers/base/platform.c:1182:12: warning: 'dma_default_get_required_mask' defined but not used [-Wunused-function]
 static u64 dma_default_get_required_mask(struct device *dev)
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Introduced by commit

  dma_default_get_required_mask ("dma-mapping: make the get_required_mask method available unconditionally")

It is only used in the case ARCH_HAS_DMA_GET_REQUIRED_MASK is not defined.

-- 
Cheers,
Stephen Rothwell

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