infiniband: sg chaining support
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/drivers/infiniband/hw/ipath/ipath_dma.c b/drivers/infiniband/hw/ipath/ipath_dma.c
index f87f003..22709a4 100644
--- a/drivers/infiniband/hw/ipath/ipath_dma.c
+++ b/drivers/infiniband/hw/ipath/ipath_dma.c
@@ -30,6 +30,7 @@
* SOFTWARE.
*/
+#include <linux/scatterlist.h>
#include <rdma/ib_verbs.h>
#include "ipath_verbs.h"
@@ -96,17 +97,18 @@
BUG_ON(!valid_dma_direction(direction));
}
-static int ipath_map_sg(struct ib_device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction direction)
+static int ipath_map_sg(struct ib_device *dev, struct scatterlist *sgl,
+ int nents, enum dma_data_direction direction)
{
+ struct scatterlist *sg;
u64 addr;
int i;
int ret = nents;
BUG_ON(!valid_dma_direction(direction));
- for (i = 0; i < nents; i++) {
- addr = (u64) page_address(sg[i].page);
+ for_each_sg(sgl, sg, nents, i) {
+ addr = (u64) page_address(sg->page);
/* TODO: handle highmem pages */
if (!addr) {
ret = 0;