scsi: target: perform t10_wwn ID initialisation in target_alloc_device()

Initialise the t10_wwn vendor, model and revision defaults when a device is
allocated instead of when it's enabled. This ensures that custom vendor or
model strings set prior to enablement are not later overwritten with
default values.

The TRANSPORT_FLAG_PASSTHROUGH conditional can be dropped for the following
reasons:

 - target_core_pscsi overwrites the defaults in the
   pscsi_configure_device() callback.
   + the contents is then only used for ConfigFS via
     $pscsi_dev/statistics/scsi_lu/vend, etc.

 - target_core_user doesn't touch the defaults, nor are they used for
   anything outside of ConfigFS.

Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 7 insertions, 14 deletions

diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 7655c426d6a5..93c56f4a9911 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -810,6 +810,13 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
         mutex_init(&xcopy_lun->lun_tg_pt_md_mutex);
         xcopy_lun->lun_tpg = &xcopy_pt_tpg;
 
+        /* Preload the default INQUIRY const values */
+        strlcpy(dev->t10_wwn.vendor, "LIO-ORG", sizeof(dev->t10_wwn.vendor));
+        strlcpy(dev->t10_wwn.model, dev->transport->inquiry_prod,
+                sizeof(dev->t10_wwn.model));
+        strlcpy(dev->t10_wwn.revision, dev->transport->inquiry_rev,
+                sizeof(dev->t10_wwn.revision));
+
         return dev;
 }
 
@@ -972,20 +979,6 @@ int target_configure_device(struct se_device *dev)
          */
         INIT_WORK(&dev->qf_work_queue, target_qf_do_work);
 
-        /*
-         * Preload the initial INQUIRY const values if we are doing
-         * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI
-         * passthrough because this is being provided by the backend LLD.
-         */
-        if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)) {
-                strlcpy(dev->t10_wwn.vendor, "LIO-ORG",
-                        sizeof(dev->t10_wwn.vendor));
-                strlcpy(dev->t10_wwn.model, dev->transport->inquiry_prod,
-                        sizeof(dev->t10_wwn.model));
-                strlcpy(dev->t10_wwn.revision, dev->transport->inquiry_rev,
-                        sizeof(dev->t10_wwn.revision));
-        }
-
         scsi_dump_inquiry(dev);
 
         spin_lock(&hba->device_lock);