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| author | Christoph Hellwig <hch@lst.de> | 2018-12-14 09:15:02 +0100 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-12-20 08:14:09 +0100 |
| commit | 06d4dd2f2ce1cdb625f77c0676d5af6ba310c01d (patch) | |
| tree | 4ab5304877a59cda6d57944619e7567af45ae2b6 /Documentation/DMA-API.txt | |
| parent | dma-mapping: zero memory returned from dma_alloc_* (diff) | |
| download | linux-06d4dd2f2ce1cdb625f77c0676d5af6ba310c01d.tar.xz linux-06d4dd2f2ce1cdb625f77c0676d5af6ba310c01d.zip | |
dma-mapping: deprecate dma_zalloc_coherent
We now always return zeroed memory from dma_alloc_coherent. Note that
simply passing GFP_ZERO to dma_alloc_coherent wasn't always doing the
right thing to start with given that various allocators are not backed
by the page allocator and thus would ignore GFP_ZERO.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'Documentation/DMA-API.txt')
| -rw-r--r-- | Documentation/DMA-API.txt | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/Documentation/DMA-API.txt b/Documentation/DMA-API.txt index 016eb6909b8a..e133ccd60228 100644 --- a/Documentation/DMA-API.txt +++ b/Documentation/DMA-API.txt @@ -60,15 +60,6 @@ the returned memory, like GFP_DMA). :: - void * - dma_zalloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag) - -Wraps dma_alloc_coherent() and also zeroes the returned memory if the -allocation attempt succeeded. - -:: - void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, dma_addr_t dma_handle) |