Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / include / asm-i386 / dma-mapping.h

diff --git a/include/asm-i386/dma-mapping.h b/include/asm-i386/dma-mapping.h
index 563964b..9cf20ca 100644 (file)
--- a/include/asm-i386/dma-mapping.h
+++ b/include/asm-i386/dma-mapping.h
@@ -6,12 +6,13 @@
 #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)
 
 void *dma_alloc_coherent(struct device *dev, size_t size,
-                          dma_addr_t *dma_handle, unsigned int __nocast flag);
+                          dma_addr_t *dma_handle, gfp_t flag);
 
 void dma_free_coherent(struct device *dev, size_t size,
                         void *vaddr, dma_addr_t dma_handle);
@@ -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);
@@ -150,7 +156,7 @@ dma_get_cache_alignment(void)
 {
        /* no easy way to get cache size on all x86, so return the
         * maximum possible, to be safe */
-       return (1 << L1_CACHE_SHIFT_MAX);
+       return (1 << INTERNODE_CACHE_SHIFT);
 }
 
 #define dma_is_consistent(d)   (1)