diff options
| author | Mitchel Humpherys <mitchelh@codeaurora.org> | 2015-09-30 14:22:39 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-22 11:14:27 -0700 |
| commit | b6d3fe22042b31a35d6830eeebaf5ca9ff4a1da6 (patch) | |
| tree | 8756beb24eadd7a205ab5090acf94bd841bd8be8 | |
| parent | 8387b734ea3dca2166db165f5ff5ab7ad0adf42e (diff) | |
iommu/io-pgtable: Improve documentation of .map_sg callback
The return value of the .map_sg callback is currently undocumented.
Document it.
Change-Id: I195cbfb78eaf173d916dd03190f89b2fe04e144e
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
| -rw-r--r-- | drivers/iommu/io-pgtable.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/iommu/io-pgtable.h b/drivers/iommu/io-pgtable.h index f74f148ea76f..5d3848aeba07 100644 --- a/drivers/iommu/io-pgtable.h +++ b/drivers/iommu/io-pgtable.h @@ -77,7 +77,8 @@ struct io_pgtable_cfg { * struct io_pgtable_ops - Page table manipulation API for IOMMU drivers. * * @map: Map a physically contiguous memory region. - * @map_sg: Map a scatterlist. The size parameter contains the size + * @map_sg: Map a scatterlist. Returns the number of bytes mapped, + * or 0 on failure. The size parameter contains the size * of the partial mapping in case of failure. * @unmap: Unmap a physically contiguous memory region. * @iova_to_phys: Translate iova to physical address. |