| Message ID | 20171229081911.2802-4-hch@lst.de (mailing list archive) |
|---|---|
| State | Awaiting Upstream |
| Headers | show |
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
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> --- include/linux/dma-mapping.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)