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| author | Christoph Hellwig <hch@lst.de> | 2017-11-30 18:32:51 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-01-10 18:25:06 +0300 |
| commit | a41ef1e455a9796be8cb986f0616f52453ac8e4b (patch) | |
| tree | 6c8a67935171bbda4c1be624bb8bca40f9c72e7e | |
| parent | 8fbc02ac62677603e75a67385fccd0c0bc69fa5c (diff) | |
| download | linux-a41ef1e455a9796be8cb986f0616f52453ac8e4b.tar.xz | |
dma-mapping: take dma_pfn_offset into account in dma_max_pfn
This makes sure the generic version can be used with architectures /
devices that have a DMA offset in the direct mapping.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
| -rw-r--r-- | include/linux/dma-mapping.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 81ed9b2d84dc..d84951865be7 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -692,7 +692,7 @@ static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask) #ifndef dma_max_pfn static inline unsigned long dma_max_pfn(struct device *dev) { - return *dev->dma_mask >> PAGE_SHIFT; + return (*dev->dma_mask >> PAGE_SHIFT) + dev->dma_pfn_offset; } #endif |