[SCSI] zfcp: convert to use the data buffer accessors

- remove the unnecessary map_single path.

- convert to use the new accessors for the sg lists and the
parameters.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index b240800b78d7..99299976e891 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -4154,8 +4154,9 @@ zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *fsf_req)
                               fcp_rsp_iu->fcp_resid,
                               (int) zfcp_get_fcp_dl(fcp_cmnd_iu));
 
-                scpnt->resid = fcp_rsp_iu->fcp_resid;
-                if (scpnt->request_bufflen - scpnt->resid < scpnt->underflow)
+                scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid);
+                if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) <
+                    scpnt->underflow)
                         set_host_byte(&scpnt->result, DID_ERROR);
         }