net: Fix build with ARCH=um

If UM is going to claim that it supports DMA by setting HAS_DMA, it should provide a dma_mapping_error() implementation. Based upon a report by Julius Volz. Signed-off-by: David S. Miller <davem@davemloft.net>
git-mirror · Sep 19, 2008 · 02a1416 · 02a1416
1 parent 821c92f
commit 02a1416
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/include/asm-um/dma-mapping.h b/include/asm-um/dma-mapping.h
@@ -118,4 +118,11 @@ dma_cache_sync(struct device *dev, void *vaddr, size_t size,
 	BUG();
 }
 
+static inline int
+dma_mapping_error(struct device *dev, dma_addr_t dma_handle)
+{
+	BUG();
+	return 0;
+}
+
 #endif