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

The ->seq_assign callback only ever had one implementation,
so call the function 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>

drivers/scsi/libfc/fc_exch.c

@@ -1477,7 +1477,7 @@ static void fc_exch_recv_abts(struct fc_exch *ep, struct fc_frame *rx_fp)
  * A reference will be held on the exchange/sequence for the caller, which
  * must call fc_seq_release().
  */
-static struct fc_seq *fc_seq_assign(struct fc_lport *lport, struct fc_frame *fp)
+struct fc_seq *fc_seq_assign(struct fc_lport *lport, struct fc_frame *fp)
 {
 	struct fc_exch_mgr_anchor *ema;
 
@@ -1491,6 +1491,7 @@ static struct fc_seq *fc_seq_assign(struct fc_lport *lport, struct fc_frame *fp)
 			break;
 	return fr_seq(fp);
 }
+EXPORT_SYMBOL(fc_seq_assign);
 
 /**
  * fc_seq_release() - Release the hold
@@ -2653,9 +2654,6 @@ int fc_exch_init(struct fc_lport *lport)
 	if (!lport->tt.exch_mgr_reset)
 		lport->tt.exch_mgr_reset = fc_exch_mgr_reset;
 
-	if (!lport->tt.seq_assign)
-		lport->tt.seq_assign = fc_seq_assign;
-
 	if (!lport->tt.seq_release)
 		lport->tt.seq_release = fc_seq_release;
 

drivers/target/tcm_fc/tfc_cmd.c

@@ -461,7 +461,7 @@ static void ft_recv_cmd(struct ft_sess *sess, struct fc_frame *fp)
 
 	cmd->se_cmd.map_tag = tag;
 	cmd->sess = sess;
-	cmd->seq = lport->tt.seq_assign(lport, fp);
+	cmd->seq = fc_seq_assign(lport, fp);
 	if (!cmd->seq) {
 		percpu_ida_free(&se_sess->sess_tag_pool, tag);
 		goto busy;

include/scsi/libfc.h

@@ -514,13 +514,6 @@ struct libfc_function_template {
 	 */
 	void (*get_lesb)(struct fc_lport *, struct fc_els_lesb *lesb);
 
-	/*
-	 * Assign a sequence for an incoming request frame.
-	 *
-	 * STATUS: OPTIONAL
-	 */
-	struct fc_seq *(*seq_assign)(struct fc_lport *, struct fc_frame *);
-
 	/*
 	 * Release the reference on the sequence returned by seq_assign().
 	 *
@@ -1006,6 +999,7 @@ struct fc_seq *fc_seq_start_next(struct fc_seq *sp);
 void fc_seq_set_resp(struct fc_seq *sp,
 		     void (*resp)(struct fc_seq *, struct fc_frame *, void *),
 		     void *arg);
+struct fc_seq *fc_seq_assign(struct fc_lport *lport, struct fc_frame *fp);
 struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *,
 					   struct fc_exch_mgr *,
 					   bool (*match)(struct fc_frame *));