---

yaml --- r: 17976 b: refs/heads/master c: fd78f11 h: refs/heads/master v: v3
git-mirror · Jan 12, 2006 · 9fa561c · 9fa561c
1 parent 1367291
commit 9fa561c
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Showing 2 changed files with 10 additions and 4 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3d831d925c6d66569a0c7f6f5f17c0927f7d3d25
+refs/heads/master: fd78f11790c37e2165733699f50450500e63a7b3
diff --git a/trunk/include/asm-i386/dma-mapping.h b/trunk/include/asm-i386/dma-mapping.h
@@ -6,6 +6,7 @@
 #include <asm/cache.h>
 #include <asm/io.h>
 #include <asm/scatterlist.h>
+#include <asm/bug.h>
 
 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
@@ -20,7 +21,9 @@ static inline dma_addr_t
 dma_map_single(struct device *dev, void *ptr, size_t size,
 	       enum dma_data_direction direction)
 {
-	BUG_ON(direction == DMA_NONE);
+	if (direction == DMA_NONE)
+		BUG();
+	WARN_ON(size == 0);
 	flush_write_buffers();
 	return virt_to_phys(ptr);
 }
@@ -29,7 +32,8 @@ static inline void
 dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
 		 enum dma_data_direction direction)
 {
-	BUG_ON(direction == DMA_NONE);
+	if (direction == DMA_NONE)
+		BUG();
 }
 
 static inline int
@@ -38,7 +42,9 @@ dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
 {
 	int i;
 
-	BUG_ON(direction == DMA_NONE);
+	if (direction == DMA_NONE)
+		BUG();
+	WARN_ON(nents == 0 || sg[0].length == 0);
 
 	for (i = 0; i < nents; i++ ) {
 		BUG_ON(!sg[i].page);