diff --git a/datalink814_ge/src/linklayer/net_service.c b/datalink814_ge/src/linklayer/net_service.c
index 77dc00e..121c5ee 100644
--- a/datalink814_ge/src/linklayer/net_service.c
+++ b/datalink814_ge/src/linklayer/net_service.c
@@ -181,7 +181,7 @@ static int PduHeader_Packing(L2_INST *instPtr, BIT_ARRAY *bitarr, L2_PDU_HEADER_
  ******************************************************************************/
 int32_t L2_Service_Init(L2_SVC_FSM **serviceFSM)
 {
-	(*serviceFSM) = (L2_SVC_FSM *)malloc(sizeof(L2_SVC_FSM));
+	*serviceFSM = (L2_SVC_FSM *)malloc(sizeof(L2_SVC_FSM));
 	if (*serviceFSM == NULL)
 	{
 		return EALLOC;
@@ -190,13 +190,33 @@ int32_t L2_Service_Init(L2_SVC_FSM **serviceFSM)
 	return SUCCESS;
 }
 
+/*****************************************************************************/
+/**
+ * @brief  Reset ServiceNet FSM
+ *
+ * @param   scanFsmPtr a pointer to service net finite state machine
+ *
+ * @return  NONE
+ *
+ ******************************************************************************/
 void L2_Service_Reset(L2_SVC_FSM *serviceFSM)
 {
+	ASSERT(serviceFSM != NULL);
 	serviceFSM->isBisar = false;
 	serviceFSM->isBisarEven = false;
 	serviceFSM->bisarDst = L2_NONE_ID;
 }
 
+
+/*****************************************************************************/
+/**
+ * @brief  Destroy ServiceNet FSM, free memory
+ *
+ * @param   scanFsmPtr a pointer to service net finite state machine
+ *
+ * @return  NONE
+ *
+ ******************************************************************************/
 void L2_Service_Destroy(L2_SVC_FSM *serviceFSM)
 {
 	free(serviceFSM);