firewire: fw-sbp2: convert to new SCSI data buffer accessors

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

1 files changed, 7 insertions, 9 deletions

diff --git a/drivers/firewire/fw-sbp2.c b/drivers/firewire/fw-sbp2.c
index 7c53be0387fb..fc984474162c 100644
--- a/drivers/firewire/fw-sbp2.c
+++ b/drivers/firewire/fw-sbp2.c
@@ -840,7 +840,6 @@ complete_command_orb(struct sbp2_orb *base_orb, struct sbp2_status *status)
                 container_of(base_orb, struct sbp2_command_orb, base);
         struct fw_unit *unit = orb->unit;
         struct fw_device *device = fw_device(unit->device.parent);
-        struct scatterlist *sg;
         int result;
 
         if (status != NULL) {
@@ -876,11 +875,10 @@ complete_command_orb(struct sbp2_orb *base_orb, struct sbp2_status *status)
         dma_unmap_single(device->card->device, orb->base.request_bus,
                          sizeof(orb->request), DMA_TO_DEVICE);
 
-        if (orb->cmd->use_sg > 0) {
-                sg = (struct scatterlist *)orb->cmd->request_buffer;
-                dma_unmap_sg(device->card->device, sg, orb->cmd->use_sg,
+        if (scsi_sg_count(orb->cmd) > 0)
+                dma_unmap_sg(device->card->device, scsi_sglist(orb->cmd),
+                             scsi_sg_count(orb->cmd),
                              orb->cmd->sc_data_direction);
-        }
 
         if (orb->page_table_bus != 0)
                 dma_unmap_single(device->card->device, orb->page_table_bus,
@@ -901,8 +899,8 @@ static int sbp2_command_orb_map_scatterlist(struct sbp2_command_orb *orb)
         int sg_len, l, i, j, count;
         dma_addr_t sg_addr;
 
-        sg = (struct scatterlist *)orb->cmd->request_buffer;
-        count = dma_map_sg(device->card->device, sg, orb->cmd->use_sg,
+        sg = scsi_sglist(orb->cmd);
+        count = dma_map_sg(device->card->device, sg, scsi_sg_count(orb->cmd),
                            orb->cmd->sc_data_direction);
         if (count == 0)
                 goto fail;
@@ -971,7 +969,7 @@ static int sbp2_command_orb_map_scatterlist(struct sbp2_command_orb *orb)
         return 0;
 
  fail_page_table:
-        dma_unmap_sg(device->card->device, sg, orb->cmd->use_sg,
+        dma_unmap_sg(device->card->device, sg, scsi_sg_count(orb->cmd),
                      orb->cmd->sc_data_direction);
  fail:
         return -ENOMEM;
@@ -1031,7 +1029,7 @@ static int sbp2_scsi_queuecommand(struct scsi_cmnd *cmd, scsi_done_fn_t done)
                 orb->request.misc |=
                         COMMAND_ORB_DIRECTION(SBP2_DIRECTION_TO_MEDIA);
 
-        if (cmd->use_sg && sbp2_command_orb_map_scatterlist(orb) < 0)
+        if (scsi_sg_count(cmd) && sbp2_command_orb_map_scatterlist(orb) < 0)
                 goto fail_mapping;
 
         fw_memcpy_to_be32(&orb->request, &orb->request, sizeof(orb->request));