diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-02-21 23:35:05 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2020-03-16 12:48:12 +0300 |
| commit | 999a5d1203baa7cff00586361feae263ee3f23a5 (patch) | |
| tree | b04c578a71b961394e7fe87567684bf0caefbe8b /include/linux/dma-noncoherent.h | |
| parent | fa7e2247c5729f990c7456fe09f3af99c8f2571b (diff) | |
| download | linux-999a5d1203baa7cff00586361feae263ee3f23a5.tar.xz | |
dma-direct: provide a arch_dma_clear_uncached hook
This allows the arch code to reset the page tables to cached access when
freeing a dma coherent allocation that was set to uncached using
arch_dma_set_uncached.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Diffstat (limited to 'include/linux/dma-noncoherent.h')
| -rw-r--r-- | include/linux/dma-noncoherent.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/dma-noncoherent.h b/include/linux/dma-noncoherent.h index 1a4039506673..b59f1b6be3e9 100644 --- a/include/linux/dma-noncoherent.h +++ b/include/linux/dma-noncoherent.h @@ -109,5 +109,6 @@ static inline void arch_dma_prep_coherent(struct page *page, size_t size) #endif /* CONFIG_ARCH_HAS_DMA_PREP_COHERENT */ void *arch_dma_set_uncached(void *addr, size_t size); +void arch_dma_clear_uncached(void *addr, size_t size); #endif /* _LINUX_DMA_NONCOHERENT_H */ |