From 72220aa811087e8f4ee49639ff1798995d127ae5 Mon Sep 17 00:00:00 2001
From: Andre Puschmann <andre@softwareradiosystems.com>
Date: Tue, 19 Jul 2022 12:44:06 +0200
Subject: [PATCH] enb,phy: do not start start plots if LTE workers don't exist

this was causing a segfault when the GUI was enabled in SA mode, i.e. without LTE cells
we only support the GUI with LTE enabled.
---
 srsenb/src/phy/phy.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/srsenb/src/phy/phy.cc b/srsenb/src/phy/phy.cc
index e211b157c..db0f75831 100644
--- a/srsenb/src/phy/phy.cc
+++ b/srsenb/src/phy/phy.cc
@@ -349,7 +349,9 @@ void phy::configure_mbsfn(srsran::sib2_mbms_t* sib2, srsran::sib13_t* sib13, con
 // Start GUI
 void phy::start_plot()
 {
-  lte_workers[0]->start_plot();
+  if (lte_workers.get_nof_workers() > 0) {
+    lte_workers[0]->start_plot();
+  }
 }
 
 int phy::init_nr(const phy_args_t& args, const phy_cfg_t& cfg, stack_interface_phy_nr& stack)