small change on adding mutex to protect ul_config_pdu against race condition.

openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c

@@ -673,11 +673,10 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
       nfapi_nr_ue_pusch_pdu_t *pusch_config_pdu = &ul_config->ul_config_list[ul_config->number_pdus].pusch_config_pdu;
 
       fill_ul_config(ul_config, frame_tx, slot_tx, FAPI_NR_UL_CONFIG_TYPE_PUSCH);
+      pthread_mutex_unlock(&ul_config->mutex_ul_config);
 
       // Config PUSCH PDU
       ret = nr_config_pusch_pdu(mac, pusch_config_pdu, dci, NULL, rnti, &dci_format);
-      pthread_mutex_unlock(&ul_config->mutex_ul_config);
-
     }
     
     break;
@@ -735,11 +734,10 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
       nfapi_nr_ue_pusch_pdu_t *pusch_config_pdu = &ul_config->ul_config_list[ul_config->number_pdus].pusch_config_pdu;
 
       fill_ul_config(ul_config, frame_tx, slot_tx, FAPI_NR_UL_CONFIG_TYPE_PUSCH);
+      pthread_mutex_unlock(&ul_config->mutex_ul_config);
 
       // Config PUSCH PDU
       ret = nr_config_pusch_pdu(mac, pusch_config_pdu, dci, NULL, rnti, &dci_format);
-      pthread_mutex_unlock(&ul_config->mutex_ul_config);
-
     } else AssertFatal(1==0,"Cannot schedule PUSCH\n");
     break;
   }
@@ -3930,11 +3928,10 @@ int nr_ue_process_rar(nr_downlink_indication_t *dl_info, NR_UL_TIME_ALIGNMENT_t
       nfapi_nr_ue_pusch_pdu_t *pusch_config_pdu = &ul_config->ul_config_list[ul_config->number_pdus].pusch_config_pdu;
 
       fill_ul_config(ul_config, frame_tx, slot_tx, FAPI_NR_UL_CONFIG_TYPE_PUSCH);
+      pthread_mutex_unlock(&ul_config->mutex_ul_config);
 
       // Config Msg3 PDU
       nr_config_pusch_pdu(mac, pusch_config_pdu, NULL, &rar_grant, rnti, NULL);
-      pthread_mutex_unlock(&ul_config->mutex_ul_config);
-
     }
 
   } else {