scsi: libfc: Replace ->rport_login callback with function call

The ->rport_login callback only ever had one implementation,
so we can as well call it directly and drop the callback.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Acked-by: Johannes Thumshirn <jth@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

3 files changed, 16 insertions, 10 deletions

diff --git a/drivers/scsi/libfc/fc_disc.c b/drivers/scsi/libfc/fc_disc.c
index 305dd8541963..8d0aa19b1f5b 100644
--- a/drivers/scsi/libfc/fc_disc.c
+++ b/drivers/scsi/libfc/fc_disc.c
@@ -299,7 +299,7 @@ static void fc_disc_done(struct fc_disc *disc, enum fc_disc_event event)
 			continue;
 		if (rdata->disc_id) {
 			if (rdata->disc_id == disc->disc_id)
-				lport->tt.rport_login(rdata);
+				fc_rport_login(rdata);
 			else
 				lport->tt.rport_logoff(rdata);
 		}
@@ -628,13 +628,13 @@ static void fc_disc_gpn_id_resp(struct fc_seq *sp, struct fc_frame *fp,
 			mutex_unlock(&lport->disc.disc_mutex);
 			if (new_rdata) {
 				new_rdata->disc_id = disc->disc_id;
-				lport->tt.rport_login(new_rdata);
+				fc_rport_login(new_rdata);
 			}
 			goto out;
 		}
 		rdata->disc_id = disc->disc_id;
 		mutex_unlock(&rdata->rp_mutex);
-		lport->tt.rport_login(rdata);
+		fc_rport_login(rdata);
 	} else if (ntohs(cp->ct_cmd) == FC_FS_RJT) {
 		FC_DISC_DBG(disc, "GPN_ID rejected reason %x exp %x\n",
 			    cp->ct_reason, cp->ct_explan);
diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c
index a16936a833f8..e20c1519be15 100644
--- a/drivers/scsi/libfc/fc_lport.c
+++ b/drivers/scsi/libfc/fc_lport.c
@@ -256,7 +256,7 @@ static void fc_lport_ptp_setup(struct fc_lport *lport,
 	lport->ptp_rdata->ids.node_name = remote_wwnn;
 	mutex_unlock(&lport->disc.disc_mutex);
 
-	lport->tt.rport_login(lport->ptp_rdata);
+	fc_rport_login(lport->ptp_rdata);
 
 	fc_lport_enter_ready(lport);
 }
@@ -1437,7 +1437,7 @@ static void fc_lport_enter_dns(struct fc_lport *lport)
 		goto err;
 
 	rdata->ops = &fc_lport_rport_ops;
-	lport->tt.rport_login(rdata);
+	fc_rport_login(rdata);
 	return;
 
 err:
@@ -1554,7 +1554,7 @@ static void fc_lport_enter_fdmi(struct fc_lport *lport)
 		goto err;
 
 	rdata->ops = &fc_lport_rport_ops;
-	lport->tt.rport_login(rdata);
+	fc_rport_login(rdata);
 	return;
 
 err:
diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c
index b05fa9997db5..c045bc459910 100644
--- a/drivers/scsi/libfc/fc_rport.c
+++ b/drivers/scsi/libfc/fc_rport.c
@@ -412,6 +412,14 @@ static void fc_rport_work(struct work_struct *work)
  * fc_rport_login() - Start the remote port login state machine
  * @rdata: The remote port to be logged in to
  *
+ * Initiates the RP state machine. It is called from the LP module.
+ * This function will issue the following commands to the N_Port
+ * identified by the FC ID provided.
+ *
+ * - PLOGI
+ * - PRLI
+ * - RTV
+ *
  * Locking Note: Called without the rport lock held. This
  * function will hold the rport lock, call an _enter_*
  * function and then unlock the rport.
@@ -420,7 +428,7 @@ static void fc_rport_work(struct work_struct *work)
  * If it appears we are already logged in, ADISC is used to verify
  * the setup.
  */
-static int fc_rport_login(struct fc_rport_priv *rdata)
+int fc_rport_login(struct fc_rport_priv *rdata)
 {
 	mutex_lock(&rdata->rp_mutex);
 
@@ -452,6 +460,7 @@ static int fc_rport_login(struct fc_rport_priv *rdata)
 
 	return 0;
 }
+EXPORT_SYMBOL(fc_rport_login);
 
 /**
  * fc_rport_enter_delete() - Schedule a remote port to be deleted
@@ -2175,9 +2184,6 @@ static void fc_rport_flush_queue(void)
  */
 int fc_rport_init(struct fc_lport *lport)
 {
-	if (!lport->tt.rport_login)
-		lport->tt.rport_login = fc_rport_login;
-
 	if (!lport->tt.rport_logoff)
 		lport->tt.rport_logoff = fc_rport_logoff;