X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=drivers%2Fieee1394%2Fdma.c;h=c68f328e1a29c9c8e7db039610831ae9a0a7900b;hb=d3bac118fb27a365d5e9f54f4a078eb9b42f968f;hp=9fb2769d9abca9b25f3e136a79a48609ff5ee0dc;hpb=34b8c399dc04c8e51f014b73458e654570698597;p=powerpc.git

diff --git a/drivers/ieee1394/dma.c b/drivers/ieee1394/dma.c
index 9fb2769d9a..c68f328e1a 100644
--- a/drivers/ieee1394/dma.c
+++ b/drivers/ieee1394/dma.c
@@ -7,10 +7,13 @@
  * directory of the kernel sources for details.
  */
 
+#include <linux/mm.h>
 #include <linux/module.h>
-#include <linux/vmalloc.h>
+#include <linux/pci.h>
 #include <linux/slab.h>
-#include <linux/mm.h>
+#include <linux/vmalloc.h>
+#include <asm/scatterlist.h>
+
 #include "dma.h"
 
 /* dma_prog_region */
@@ -145,12 +148,12 @@ void dma_region_free(struct dma_region *dma)
 /* find the scatterlist index and remaining offset corresponding to a
    given offset from the beginning of the buffer */
 static inline int dma_region_find(struct dma_region *dma, unsigned long offset,
-				  unsigned long *rem)
+				  unsigned int start, unsigned long *rem)
 {
 	int i;
 	unsigned long off = offset;
 
-	for (i = 0; i < dma->n_dma_pages; i++) {
+	for (i = start; i < dma->n_dma_pages; i++) {
 		if (off < sg_dma_len(&dma->sglist[i])) {
 			*rem = off;
 			break;
@@ -170,7 +173,7 @@ dma_addr_t dma_region_offset_to_bus(struct dma_region * dma,
 	unsigned long rem = 0;
 
 	struct scatterlist *sg =
-	    &dma->sglist[dma_region_find(dma, offset, &rem)];
+	    &dma->sglist[dma_region_find(dma, offset, 0, &rem)];
 	return sg_dma_address(sg) + rem;
 }
 
@@ -178,13 +181,13 @@ void dma_region_sync_for_cpu(struct dma_region *dma, unsigned long offset,
 			     unsigned long len)
 {
 	int first, last;
-	unsigned long rem;
+	unsigned long rem = 0;
 
 	if (!len)
 		len = 1;
 
-	first = dma_region_find(dma, offset, &rem);
-	last = dma_region_find(dma, offset + len - 1, &rem);
+	first = dma_region_find(dma, offset, 0, &rem);
+	last = dma_region_find(dma, rem + len - 1, first, &rem);
 
 	pci_dma_sync_sg_for_cpu(dma->dev, &dma->sglist[first], last - first + 1,
 				dma->direction);
@@ -194,13 +197,13 @@ void dma_region_sync_for_device(struct dma_region *dma, unsigned long offset,
 				unsigned long len)
 {
 	int first, last;
-	unsigned long rem;
+	unsigned long rem = 0;
 
 	if (!len)
 		len = 1;
 
-	first = dma_region_find(dma, offset, &rem);
-	last = dma_region_find(dma, offset + len - 1, &rem);
+	first = dma_region_find(dma, offset, 0, &rem);
+	last = dma_region_find(dma, rem + len - 1, first, &rem);
 
 	pci_dma_sync_sg_for_device(dma->dev, &dma->sglist[first],
 				   last - first + 1, dma->direction);