diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2012-03-23 13:05:14 +0100 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2012-05-21 15:06:09 +0200 |
| commit | bca0fa5f12a6744a2b2e53154af65a51402b3426 (patch) | |
| tree | 3da5a3098d9a9139e7a027cdab1a8ae5386f6be0 /include/asm-generic/dma-coherent.h | |
| parent | 76e10d158efb6d4516018846f60c2ab5501900bc (diff) | |
| download | lwn-bca0fa5f12a6744a2b2e53154af65a51402b3426.tar.gz lwn-bca0fa5f12a6744a2b2e53154af65a51402b3426.zip | |
common: add dma_mmap_from_coherent() function
Add a common helper for dma-mapping core for mapping a coherent buffer
to userspace.
Reported-by: Subash Patel <subashrp@gmail.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Tested-By: Subash Patel <subash.ramaswamy@linaro.org>
Diffstat (limited to 'include/asm-generic/dma-coherent.h')
| -rw-r--r-- | include/asm-generic/dma-coherent.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/asm-generic/dma-coherent.h b/include/asm-generic/dma-coherent.h index 85a3ffaa0242..abfb2682de7f 100644 --- a/include/asm-generic/dma-coherent.h +++ b/include/asm-generic/dma-coherent.h @@ -3,13 +3,15 @@ #ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT /* - * These two functions are only for dma allocator. + * These three functions are only for dma allocator. * Don't use them in device drivers. */ int dma_alloc_from_coherent(struct device *dev, ssize_t size, dma_addr_t *dma_handle, void **ret); int dma_release_from_coherent(struct device *dev, int order, void *vaddr); +int dma_mmap_from_coherent(struct device *dev, struct vm_area_struct *vma, + void *cpu_addr, size_t size, int *ret); /* * Standard interface */ |