Index: libteam-1.16/teamd/teamd_lw_psr.c
===================================================================
--- libteam-1.16.orig/teamd/teamd_lw_psr.c
+++ libteam-1.16/teamd/teamd_lw_psr.c
@@ -39,6 +39,9 @@ static int lw_psr_callback_periodic(stru
 	bool link_up = common_ppriv->link_up;
 	int err;
 
+	if (!psr_ppriv->ops)
+		return -EINVAL;
+
 	if (psr_ppriv->reply_received) {
 		link_up = true;
 		psr_ppriv->missed = 0;
@@ -65,6 +68,9 @@ static int lw_psr_callback_socket(struct
 {
 	struct lw_psr_port_priv *psr_ppriv = priv;
 
+	if (!psr_ppriv->ops)
+		return -EINVAL;
+
 	return psr_ppriv->ops->receive(psr_ppriv);
 }
 
@@ -120,6 +126,9 @@ int lw_psr_port_added(struct teamd_conte
 	struct lw_psr_port_priv *psr_ppriv = priv;
 	int err;
 
+	if (!psr_ppriv->ops)
+		return -EINVAL;
+
 	err = lw_psr_load_options(ctx, tdport, psr_ppriv);
 	if (err) {
 		teamd_log_err("Failed to load options.");
@@ -182,6 +191,9 @@ void lw_psr_port_removed(struct teamd_co
 {
 	struct lw_psr_port_priv *psr_ppriv = priv;
 
+	if (!psr_ppriv->ops)
+		return;
+
 	teamd_loop_callback_del(ctx, LW_PERIODIC_CB_NAME, psr_ppriv);
 	teamd_loop_callback_del(ctx, LW_SOCKET_CB_NAME, psr_ppriv);
 	psr_ppriv->ops->sock_close(psr_ppriv);