diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 2f49baf131e2..ba134f6237b8 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -3312,6 +3312,8 @@ struct fab_scan_rp {
 struct fab_scan {
 	struct fab_scan_rp *l;
 	u32 size;
+	u32 rscn_gen_start;
+	u32 rscn_gen_end;
 	u16 scan_retry;
 #define MAX_SCAN_RETRIES 5
 	enum scan_flags_t scan_flags;
@@ -5030,6 +5032,7 @@ typedef struct scsi_qla_host {
 
 	/* Counter to detect races between ELS and RSCN events */
 	atomic_t		generation_tick;
+	atomic_t		rscn_gen;
 	/* Time when global fcport update has been scheduled */
 	int			total_fcport_update_gen;
 	/* List of pending LOGOs, protected by tgt_mutex */
diff --git a/drivers/scsi/qla2xxx/qla_gs.c b/drivers/scsi/qla2xxx/qla_gs.c
index 1cf9d200d563..e801cd9e2345 100644
--- a/drivers/scsi/qla2xxx/qla_gs.c
+++ b/drivers/scsi/qla2xxx/qla_gs.c
@@ -3168,6 +3168,29 @@ static int qla2x00_is_a_vp(scsi_qla_host_t *vha, u64 wwn)
 	return rc;
 }
 
+static bool qla_ok_to_clear_rscn(scsi_qla_host_t *vha, fc_port_t *fcport)
+{
+	u32 rscn_gen;
+
+	rscn_gen = atomic_read(&vha->rscn_gen);
+	ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x2017,
+	    "%s %d %8phC rscn_gen %x start %x end %x current %x\n",
+	    __func__, __LINE__, fcport->port_name, fcport->rscn_gen,
+	    vha->scan.rscn_gen_start, vha->scan.rscn_gen_end, rscn_gen);
+
+	if (val_is_in_range(fcport->rscn_gen, vha->scan.rscn_gen_start,
+	    vha->scan.rscn_gen_end))
+		/* rscn came in before fabric scan */
+		return true;
+
+	if (val_is_in_range(fcport->rscn_gen, vha->scan.rscn_gen_end, rscn_gen))
+		/* rscn came in after fabric scan */
+		return false;
+
+	/* rare: fcport's scan_needed + rscn_gen must be stale */
+	return true;
+}
+
 void qla24xx_async_gnnft_done(scsi_qla_host_t *vha, srb_t *sp)
 {
 	fc_port_t *fcport;
@@ -3281,10 +3304,10 @@ void qla24xx_async_gnnft_done(scsi_qla_host_t *vha, srb_t *sp)
 				   (fcport->scan_needed &&
 				    fcport->port_type != FCT_INITIATOR &&
 				    fcport->port_type != FCT_NVME_INITIATOR)) {
+				fcport->scan_needed = 0;
 				qlt_schedule_sess_for_deletion(fcport);
 			}
 			fcport->d_id.b24 = rp->id.b24;
-			fcport->scan_needed = 0;
 			break;
 		}
 
@@ -3325,7 +3348,9 @@ void qla24xx_async_gnnft_done(scsi_qla_host_t *vha, srb_t *sp)
 				do_delete = true;
 			}
 
-			fcport->scan_needed = 0;
+			if (qla_ok_to_clear_rscn(vha, fcport))
+				fcport->scan_needed = 0;
+
 			if (((qla_dual_mode_enabled(vha) ||
 			      qla_ini_mode_enabled(vha)) &&
 			    atomic_read(&fcport->state) == FCS_ONLINE) ||
@@ -3355,7 +3380,9 @@ void qla24xx_async_gnnft_done(scsi_qla_host_t *vha, srb_t *sp)
 					    fcport->port_name, fcport->loop_id,
 					    fcport->login_retry);
 				}
-				fcport->scan_needed = 0;
+
+				if (qla_ok_to_clear_rscn(vha, fcport))
+					fcport->scan_needed = 0;
 				qla24xx_fcport_handle_login(vha, fcport);
 			}
 		}
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 8377624d76c9..d88f05ea55cb 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -1842,10 +1842,18 @@ int qla24xx_post_newsess_work(struct scsi_qla_host *vha, port_id_t *id,
 	return qla2x00_post_work(vha, e);
 }
 
+static void qla_rscn_gen_tick(scsi_qla_host_t *vha, u32 *ret_rscn_gen)
+{
+	*ret_rscn_gen = atomic_inc_return(&vha->rscn_gen);
+	/* memory barrier */
+	wmb();
+}
+
 void qla2x00_handle_rscn(scsi_qla_host_t *vha, struct event_arg *ea)
 {
 	fc_port_t *fcport;
 	unsigned long flags;
+	u32 rscn_gen;
 
 	switch (ea->id.b.rsvd_1) {
 	case RSCN_PORT_ADDR:
@@ -1875,15 +1883,16 @@ void qla2x00_handle_rscn(scsi_qla_host_t *vha, struct event_arg *ea)
 					 * Otherwise we're already in the middle of a relogin
 					 */
 					fcport->scan_needed = 1;
-					fcport->rscn_gen++;
+					qla_rscn_gen_tick(vha, &fcport->rscn_gen);
 				}
 			} else {
 				fcport->scan_needed = 1;
-				fcport->rscn_gen++;
+				qla_rscn_gen_tick(vha, &fcport->rscn_gen);
 			}
 		}
 		break;
 	case RSCN_AREA_ADDR:
+		qla_rscn_gen_tick(vha, &rscn_gen);
 		list_for_each_entry(fcport, &vha->vp_fcports, list) {
 			if (fcport->flags & FCF_FCP2_DEVICE &&
 			    atomic_read(&fcport->state) == FCS_ONLINE)
@@ -1891,11 +1900,12 @@ void qla2x00_handle_rscn(scsi_qla_host_t *vha, struct event_arg *ea)
 
 			if ((ea->id.b24 & 0xffff00) == (fcport->d_id.b24 & 0xffff00)) {
 				fcport->scan_needed = 1;
-				fcport->rscn_gen++;
+				fcport->rscn_gen = rscn_gen;
 			}
 		}
 		break;
 	case RSCN_DOM_ADDR:
+		qla_rscn_gen_tick(vha, &rscn_gen);
 		list_for_each_entry(fcport, &vha->vp_fcports, list) {
 			if (fcport->flags & FCF_FCP2_DEVICE &&
 			    atomic_read(&fcport->state) == FCS_ONLINE)
@@ -1903,19 +1913,20 @@ void qla2x00_handle_rscn(scsi_qla_host_t *vha, struct event_arg *ea)
 
 			if ((ea->id.b24 & 0xff0000) == (fcport->d_id.b24 & 0xff0000)) {
 				fcport->scan_needed = 1;
-				fcport->rscn_gen++;
+				fcport->rscn_gen = rscn_gen;
 			}
 		}
 		break;
 	case RSCN_FAB_ADDR:
 	default:
+		qla_rscn_gen_tick(vha, &rscn_gen);
 		list_for_each_entry(fcport, &vha->vp_fcports, list) {
 			if (fcport->flags & FCF_FCP2_DEVICE &&
 			    atomic_read(&fcport->state) == FCS_ONLINE)
 				continue;
 
 			fcport->scan_needed = 1;
-			fcport->rscn_gen++;
+			fcport->rscn_gen = rscn_gen;
 		}
 		break;
 	}
@@ -1924,6 +1935,7 @@ void qla2x00_handle_rscn(scsi_qla_host_t *vha, struct event_arg *ea)
 	if (vha->scan.scan_flags == 0) {
 		ql_dbg(ql_dbg_disc, vha, 0xffff, "%s: schedule\n", __func__);
 		vha->scan.scan_flags |= SF_QUEUED;
+		vha->scan.rscn_gen_start = atomic_read(&vha->rscn_gen);
 		schedule_delayed_work(&vha->scan.scan_work, 5);
 	}
 	spin_unlock_irqrestore(&vha->work_lock, flags);
@@ -6393,6 +6405,8 @@ qla2x00_configure_fabric(scsi_qla_host_t *vha)
 		qlt_do_generation_tick(vha, &discovery_gen);
 
 		if (USE_ASYNC_SCAN(ha)) {
+			/* start of scan begins here */
+			vha->scan.rscn_gen_end = atomic_read(&vha->rscn_gen);
 			rval = qla24xx_async_gpnft(vha, FC4_TYPE_FCP_SCSI,
 			    NULL);
 			if (rval)
diff --git a/drivers/scsi/qla2xxx/qla_inline.h b/drivers/scsi/qla2xxx/qla_inline.h
index a4a56ab0ba74..30e332806f86 100644
--- a/drivers/scsi/qla2xxx/qla_inline.h
+++ b/drivers/scsi/qla2xxx/qla_inline.h
@@ -631,3 +631,21 @@ static inline int qla_mapq_alloc_qp_cpu_map(struct qla_hw_data *ha)
 	}
 	return 0;
 }
+
+static inline bool val_is_in_range(u32 val, u32 start, u32 end)
+{
+	if (start < end) {
+		if (val >= start && val <= end)
+			return true;
+		else
+			return false;
+	}
+
+	/* @end has wrapped */
+	if (val >= start  && val <= 0xffffffffu)
+		return true;
+	if (val <= end)
+		return true;
+	else
+		return false;
+}
