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| author |   Christoph Hellwig <hch@lst.de> | 2020-09-11 09:31:32 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2020-09-25 06:12:25 +0200 |
| commit | db4268f8c575617bacdeff862c7de674dbf65075 (patch) | |
| tree | 8b9570bf4f6443537a9f808be1c5b528075958c6 /include/linux/dma-direction.h | |
| parent | dma-mapping: remove DMA_MASK_NONE (diff) | |
| download | linux-dev-db4268f8c575617bacdeff862c7de674dbf65075.tar.xz linux-dev-db4268f8c575617bacdeff862c7de674dbf65075.zip | |
dma-mapping: move valid_dma_direction to dma-direction.h
Move the valid_dma_direction helper to a more suitable header, and
clean it up to use the proper enum as well as removing pointless braces.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'include/linux/dma-direction.h')
| -rw-r--r-- | include/linux/dma-direction.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/dma-direction.h b/include/linux/dma-direction.h index 9c96e30e6a0b..a2fe4571bc92 100644 --- a/include/linux/dma-direction.h +++ b/include/linux/dma-direction.h @@ -9,4 +9,10 @@ enum dma_data_direction { DMA_NONE = 3, }; -#endif +static inline int valid_dma_direction(enum dma_data_direction dir) +{ + return dir == DMA_BIDIRECTIONAL || dir == DMA_TO_DEVICE || + dir == DMA_FROM_DEVICE; +} + +#endif /* _LINUX_DMA_DIRECTION_H */ |