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| author | Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> | 2015-02-11 13:53:14 +0100 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2015-03-09 13:05:47 +0100 |
| commit | 8582e267e9a29ccfd2151c5d74bc2b1440dfb827 (patch) | |
| tree | 3b4cae0c874c6a7299e4e27929e0d972a91d5150 /include/asm-generic/atomic.h | |
| parent | 9eccca0843205f87c00404b663188b88eb248051 (diff) | |
asm/dma-mapping-common: Clarify output of dma_map_sg_attrs
Although dma_map_sg_attrs returns 0 on error and it cannot return a
value < 0, the function returns a signed integer.
Most of the time, this function is used with a scatterlist structure.
This structure uses an unsigned integer for the number of memory.
A dma developer that has not read in detail DMA-API.txt, can wrongly
return a value < 0 on error.
The comment will help the driver developer, and the WARN_ON the dma
developer.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Diffstat (limited to 'include/asm-generic/atomic.h')
0 files changed, 0 insertions, 0 deletions