Merge tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[~andy/linux] / include / linux / dma-mapping.h

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 27d1421ad42c234b0ef96c44897ab94189bcc139..fd4aee29ad10caa5bd8073a31c7827baa85d11ae 100644 (file)
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -153,6 +153,13 @@ static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask)
                return -EIO;
 }
 
+#ifndef dma_max_pfn
+static inline unsigned long dma_max_pfn(struct device *dev)
+{
+       return *dev->dma_mask >> PAGE_SHIFT;
+}
+#endif
+
 static inline void *dma_zalloc_coherent(struct device *dev, size_t size,
                                        dma_addr_t *dma_handle, gfp_t flag)
 {