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dma-mapping: remove CONFIG_ARCH_NO_COHERENT_DMA_MMAP

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CONFIG_ARCH_NO_COHERENT_DMA_MMAP is now functionally identical to
!CONFIG_MMU, so remove the separate symbol.  The only difference is that
arm did not set it for !CONFIG_MMU, but arm uses a separate dma mapping
implementation including its own mmap method, which is handled by moving
the CONFIG_MMU check in dma_can_mmap so that is only applies to the
dma-direct case, just as the other ifdefs for it.

Signed-off-by: Christoph Hellwig <[email protected]>
Acked-by: Geert Uytterhoeven <[email protected]>	# m68k
This commit is contained in:
Christoph Hellwig 2019-08-06 15:06:40 +03:00
commit 62fcee9a3b
7 changed files with 5 additions and 15 deletions
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1
arch/sh/Kconfig
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@ -5,7 +5,6 @@ config SUPERH
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_NO_COHERENT_DMA_MMAP if !MMU
select HAVE_PATA_PLATFORM
select CLKDEV_LOOKUP
select DMA_DECLARE_COHERENT