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 <hch@lst.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>	# m68k

...

This commit is contained in:

Christoph Hellwig 2019-08-06 15:06:40 +03:00

parent 5128da3235

commit 62fcee9a3b

7 changed files with 5 additions and 15 deletions

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3

arch/Kconfig

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1

arch/c6x/Kconfig

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1

arch/m68k/Kconfig

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1

arch/microblaze/Kconfig

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1

arch/sh/Kconfig

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1

arch/xtensa/Kconfig

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12

kernel/dma/mapping.c

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