diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index 1a75d28..3a752be 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -64,6 +64,8 @@
 
 /**
  * batadv_nc_init - one-time initialization for network coding
+ *
+ * Return: 0 on success or negative error number in case of failure
  */
 int __init batadv_nc_init(void)
 {
@@ -142,6 +144,8 @@
 /**
  * batadv_nc_mesh_init - initialise coding hash table and start house keeping
  * @bat_priv: the bat priv with all the soft interface information
+ *
+ * Return: 0 on success or negative error number in case of failure
  */
 int batadv_nc_mesh_init(struct batadv_priv *bat_priv)
 {
@@ -989,6 +993,8 @@
  * batadv_nc_random_weight_tq - scale the receivers TQ-value to avoid unfair
  *  selection of a receiver with slightly lower TQ than the other
  * @tq: to be weighted tq value
+ *
+ * Return: scaled tq value
  */
 static u8 batadv_nc_random_weight_tq(u8 tq)
 {
@@ -1781,6 +1787,9 @@
  *  resulting unicast packet
  * @skb: incoming coded packet
  * @recv_if: pointer to interface this packet was received on
+ *
+ * Return: NET_RX_SUCCESS if the packet has been consumed or NET_RX_DROP
+ * otherwise.
  */
 static int batadv_nc_recv_coded_packet(struct sk_buff *skb,
 				       struct batadv_hard_iface *recv_if)
@@ -1865,6 +1874,8 @@
  * batadv_nc_nodes_seq_print_text - print the nc node information
  * @seq: seq file to print on
  * @offset: not used
+ *
+ * Return: always 0
  */
 int batadv_nc_nodes_seq_print_text(struct seq_file *seq, void *offset)
 {
@@ -1927,6 +1938,8 @@
 /**
  * batadv_nc_init_debugfs - create nc folder and related files in debugfs
  * @bat_priv: the bat priv with all the soft interface information
+ *
+ * Return: 0 on success or negative error number in case of failure
  */
 int batadv_nc_init_debugfs(struct batadv_priv *bat_priv)
 {