[SCSI] zfcp: non-experimental support for DIF/DIX

DIF/DIX support for zfcp is no longer experimental,
and config option is no longer necessary.
Return error from queuecommand for unsupported data directions.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

2 files changed, 3 insertions, 5 deletions

diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index 022fb6a8cb83..fa86c6a28572 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -2207,7 +2207,8 @@ int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
                 io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF;
         }
 
-        zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction);
+        if (zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction))
+                goto failed_scsi_cmnd;
 
         fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
         zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd, 0);
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index 7cac873c7383..96c31a70445f 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -24,11 +24,8 @@ module_param_named(queue_depth, default_depth, uint, 0600);
 MODULE_PARM_DESC(queue_depth, "Default queue depth for new SCSI devices");
 
 static bool enable_dif;
-
-#ifdef CONFIG_ZFCP_DIF
-module_param_named(dif, enable_dif, bool, 0600);
+module_param_named(dif, enable_dif, bool, 0400);
 MODULE_PARM_DESC(dif, "Enable DIF/DIX data integrity support");
-#endif
 
 static bool allow_lun_scan = 1;
 module_param(allow_lun_scan, bool, 0600);