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| author | Christoph Hellwig <hch@lst.de> | 2020-02-22 00:55:43 +0100 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2020-03-16 10:48:09 +0100 |
| commit | fa7e2247c5729f990c7456fe09f3af99c8f2571b (patch) | |
| tree | 65aa46af4ff51a93301caca46b509c34267bfe40 /arch/mips/Kconfig | |
| parent | dma-direct: consolidate the error handling in dma_direct_alloc_pages (diff) | |
| download | linux-fa7e2247c5729f990c7456fe09f3af99c8f2571b.tar.xz linux-fa7e2247c5729f990c7456fe09f3af99c8f2571b.zip | |
dma-direct: make uncached_kernel_address more general
Rename the symbol to arch_dma_set_uncached, and pass a size to it as
well as allow an error return. That will allow reusing this hook for
in-place pagetable remapping.
As the in-place remap doesn't always require an explicit cache flush,
also detangle ARCH_HAS_DMA_PREP_COHERENT from ARCH_HAS_DMA_SET_UNCACHED.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Diffstat (limited to 'arch/mips/Kconfig')
| -rw-r--r-- | arch/mips/Kconfig | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 797d7f1ad5fe..489185db501e 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1187,8 +1187,9 @@ config DMA_NONCOHERENT # significant advantages. # select ARCH_HAS_DMA_WRITE_COMBINE + select ARCH_HAS_DMA_PREP_COHERENT select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_UNCACHED_SEGMENT + select ARCH_HAS_DMA_SET_UNCACHED select DMA_NONCOHERENT_MMAP select DMA_NONCOHERENT_CACHE_SYNC select NEED_DMA_MAP_STATE |