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(parent: 961729b) | patch
dma-mapping: add a dma_alloc_need_uncached helper
authorChristoph Hellwig <hch@lst.de>
Fri, 14 Jun 2019 14:06:10 +0000 (16:06 +0200)
committerChristoph Hellwig <hch@lst.de>
Tue, 25 Jun 2019 06:14:43 +0000 (08:14 +0200)
commit4b85faed211ccfbcc7f3adf1cd62f0b00d1a172b
treedcc65552dd34f276ac4e20104f2f981da996bdc6tree | snapshot
parent961729bfc73e698be19305834805592227bd09e3commit | diff
dma-mapping: add a dma_alloc_need_uncached helper

Check if we need to allocate uncached memory for a device given the
allocation flags.  Switch over the uncached segment check to this helper
to deal with architectures that do not support the dma_cache_sync
operation and thus should not returned cacheable memory for
DMA_ATTR_NON_CONSISTENT allocations.

Signed-off-by: Christoph Hellwig <hch@lst.de>
include/linux/dma-noncoherent.h diff | blob | history
kernel/dma/direct.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git