i386 dma_map_sg: convert to using sg helpers

The dma mapping helpers need to be converted to using
sg helpers as well, so they will work with a chained
sglist setup.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index f1d72d177f686f73aafd6b88f6c30fd848e0e792..6a2d26cb5da641fc169be3cc9eea47fe30124448 100644 (file)
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -2,10 +2,10 @@
 #define _ASM_I386_DMA_MAPPING_H
 
 #include <linux/mm.h>
+#include <linux/scatterlist.h>
 
 #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)
@@ -35,18 +35,19 @@ dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
 }
 
 static inline int
-dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
+dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
           enum dma_data_direction direction)
 {
+       struct scatterlist *sg;
        int i;
 
        BUG_ON(!valid_dma_direction(direction));
-       WARN_ON(nents == 0 || sg[0].length == 0);
+       WARN_ON(nents == 0 || sglist[0].length == 0);
 
-       for (i = 0; i < nents; i++ ) {
-               BUG_ON(!sg[i].page);
+       for_each_sg(sglist, sg, nents, i) {
+               BUG_ON(!sg->page);
 
-               sg[i].dma_address = page_to_phys(sg[i].page) + sg[i].offset;
+               sg->dma_address = page_to_phys(sg->page) + sg->offset;
        }
 
        flush_write_buffers();