1 files changed, 1 insertions, 1 deletions

diff --git a/include/asm-ppc/dma-mapping.h b/include/asm-ppc/dma-mapping.h
index 7f0487afebbe..6f74f59938d4 100644
--- a/include/asm-ppc/dma-mapping.h
+++ b/include/asm-ppc/dma-mapping.h
@@ -117,7 +117,7 @@ dma_map_page(struct device *dev, struct page *page,
 
         __dma_sync_page(page, offset, size, direction);
 
-        return (page - mem_map) * PAGE_SIZE + PCI_DRAM_OFFSET + offset;
+        return page_to_bus(page) + offset;
 }
 
 /* We do nothing. */