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powerpc/dma: remove dma_nommu_get_required_mask

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This function is identical to the generic dma_direct_get_required_mask,
except that the generic version also takes the bus_dma_mask account,
which could lead to incorrect results in the powerpc version.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christoph Hellwig
2019-02-13 08:01:25 +01:00
committed by Michael Ellerman
parent 6666cc17d7
commit 5a47910d76
3 changed files with 2 additions and 15 deletions
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1
arch/powerpc/include/asm/dma-mapping.h
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@@ -32,7 +32,6 @@ dma_addr_t dma_nommu_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction dir, unsigned long attrs);
int dma_nommu_dma_supported(struct device *dev, u64 mask);
u64 dma_nommu_get_required_mask(struct device *dev);
#ifdef CONFIG_NOT_COHERENT_CACHE
/*