target: Drop config_item_name usage in fabric TFO->free_wwn()

This patch removes config_item_name() informational usage of
TFO->free_wwn() treewide in loopback, tcm_fc, ib_srpt and
tcm_vhost module code.

Using v4 target_core_fabric_configfs.c logic, a fabric call for
config_item_name() in TFO->drop_wwn() context returns NULL as
target_fabric_drop_wwn() invoking config_item_put() ->
config_group_put() will release fabric_port->port_wwn.wwn_group
before the last config_item_put() -> TFO->drop_wwn() is
invoked.

Reported-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

2 files changed, 5 insertions, 7 deletions

diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index cbf5e4513741..0ca89f02e26f 100644
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -1342,17 +1342,16 @@ void tcm_loop_drop_scsi_hba(
 {
         struct tcm_loop_hba *tl_hba = container_of(wwn,
                                 struct tcm_loop_hba, tl_hba_wwn);
-        int host_no = tl_hba->sh->host_no;
+
+        pr_debug("TCM_Loop_ConfigFS: Deallocating emulated Target"
+                " SAS Address: %s at Linux/SCSI Host ID: %d\n",
+                tl_hba->tl_wwn_address, tl_hba->sh->host_no);
         /*
          * Call device_unregister() on the original tl_hba->dev.
          * tcm_loop_fabric_scsi.c:tcm_loop_release_adapter() will
          * release *tl_hba;
          */
         device_unregister(&tl_hba->dev);
-
-        pr_debug("TCM_Loop_ConfigFS: Deallocated emulated Target"
-                " SAS Address: %s at Linux/SCSI Host ID: %d\n",
-                config_item_name(&wwn->wwn_group.cg_item), host_no);
 }
 
 /* Start items for tcm_loop_cit */
diff --git a/drivers/target/tcm_fc/tfc_conf.c b/drivers/target/tcm_fc/tfc_conf.c
index 5f770412ca40..9402b7387cac 100644
--- a/drivers/target/tcm_fc/tfc_conf.c
+++ b/drivers/target/tcm_fc/tfc_conf.c
@@ -436,8 +436,7 @@ static void ft_del_lport(struct se_wwn *wwn)
         struct ft_lport_acl *lacl = container_of(wwn,
                                 struct ft_lport_acl, fc_lport_wwn);
 
-        pr_debug("del lport %s\n",
-                        config_item_name(&wwn->wwn_group.cg_item));
+        pr_debug("del lport %s\n", lacl->name);
         mutex_lock(&ft_lport_lock);
         list_del(&lacl->list);
         mutex_unlock(&ft_lport_lock);