From 4b3b6b1e5e505495ad7631cc32c40be0c8fdeeb2 Mon Sep 17 00:00:00 2001
From: Robert Schmidt <robert.schmidt@openairinterface.org>
Date: Fri, 19 Jan 2024 16:37:42 +0100
Subject: [PATCH] createDRBlist(): return NULL if no active DRB

If there are no active bearers, the function previously returned an
empty list. Return NULL if there are no bearers, so it is safe to call
this function even when no bearers are present. We can also pass it
every time to do_RRCReconfiguration(), which will not add an empty list
for DRBs.
---
 openair2/RRC/NR/rrc_gNB.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/openair2/RRC/NR/rrc_gNB.c b/openair2/RRC/NR/rrc_gNB.c
index 46db206991..25c131e4aa 100644
--- a/openair2/RRC/NR/rrc_gNB.c
+++ b/openair2/RRC/NR/rrc_gNB.c
@@ -429,6 +429,10 @@ static NR_DRB_ToAddModList_t *createDRBlist(gNB_RRC_UE_t *ue, bool reestablish)
       asn1cSeqAdd(&DRB_configList->list, DRB_config);
     }
   }
+  if (DRB_configList->list.count == 0) {
+    free(DRB_configList);
+    return NULL;
+  }
   return DRB_configList;
 }