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powerpc/dma: use the dma-direct allocator for coherent platforms

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The generic code allows a few nice things such as node local allocations
and dipping into the CMA area.  The lookup of the right zone for a given
dma mask works a little different, but the results should be the same.

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 08:01:28 +01:00
committed by Michael Ellerman
parent feee96440c
commit 31f940afda
5 changed files with 9 additions and 92 deletions
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arch/powerpc/include/asm/pgtable.h
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@@ -66,7 +66,6 @@ extern unsigned long empty_zero_page[];
extern pgd_t swapper_pg_dir[];
int dma_pfn_limit_to_zone(u64 pfn_limit);
extern void paging_init(void);
/*