nds32: consolidate DMA cache maintainance routines

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Make sure all other DMA methods call nds32_dma_sync_single_for_{device,cpu}
to perform cache maintaince, and remove the consisteny_sync helper that
implemented both with entirely separate code based off an argument.

Also make sure these helpers handled highmem properly, for which code
is copy and pasted from mips.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Greentime Hu <greentime@andestech.com>
Tested-by: Greentime Hu <greentime@andestech.com>

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This commit is contained in:

Christoph Hellwig 2018-05-19 09:17:01 +02:00

parent 0ead51c3fb

commit 4ac1c68e36

1 changed files with 93 additions and 94 deletions

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arch/nds32/kernel/dma.c

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