[SG] Update drivers to use sg helpers

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/drivers/scsi/ultrastor.c b/drivers/scsi/ultrastor.c
index ea72bbe..6d1f0ed 100644
--- a/drivers/scsi/ultrastor.c
+++ b/drivers/scsi/ultrastor.c
@@ -681,7 +681,7 @@
 
 	max = scsi_sg_count(SCpnt);
 	scsi_for_each_sg(SCpnt, sg, max, i) {
-		mscp->sglist[i].address = isa_page_to_bus(sg->page) + sg->offset;
+		mscp->sglist[i].address = isa_page_to_bus(sg_page(sg)) + sg->offset;
 		mscp->sglist[i].num_bytes = sg->length;
 		transfer_length += sg->length;
 	}