arm64: Use bus notifiers to set per-device coherent DMA ops

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Recently, the default DMA ops have been changed to non-coherent for
alignment with 32-bit ARM platforms (and DT files). This patch adds bus
notifiers to be able to set the coherent DMA ops (with no cache
maintenance) for devices explicitly marked as coherent via the
"dma-coherent" DT property.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Catalin Marinas 2014-04-25 15:31:45 +01:00

parent c7a4a7658d

commit 6ecba8eb51

2 changed files with 33 additions and 2 deletions

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2

arch/arm64/kernel/setup.c

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33

arch/arm64/mm/dma-mapping.c

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