[PATCH net-next] net/iucv: Add missing kernel-doc return value descriptions

[Alexandra Winter <wintera@linux.ibm.com>]

From: Nagamani PV <nagamani@linux.ibm.com>

Add missing return value descriptions for several functions in
net/iucv/af_iucv.c and net/iucv/iucv.c to address kernel-doc warnings.

Warnings detected with:
scripts/kernel-doc -none -Wall net/iucv/*
Warning: net/iucv/af_iucv.c:131 No description found for return value of 'iucv_msg_length'
Warning: net/iucv/af_iucv.c:150 No description found for return value of 'iucv_sock_in_state'
...

No functional change.

Reviewed-by: Aswin Karuvally <aswin@linux.ibm.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Nagamani PV <nagamani@linux.ibm.com>
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
---
 net/iucv/af_iucv.c | 12 +++++++-----
 net/iucv/iucv.c    |  6 ++++++
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index 6554d2cffc19..72dfccd4e3d5 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -127,6 +127,8 @@ static inline void low_nmcpy(unsigned char *dst, char *src)
  * if the socket data len is > 7, the function returns 8.
  *
  * Use this function to allocate socket buffers to store iucv message data.
+ *
+ * Returns: Length of the IUCV message.
  */
 static inline size_t iucv_msg_length(struct iucv_message *msg)
 {
@@ -145,7 +147,7 @@ static inline size_t iucv_msg_length(struct iucv_message *msg)
  * @state:	first iucv sk state
  * @state2:	second iucv sk state
  *
- * Returns true if the socket in either in the first or second state.
+ * Returns: true if the socket is either in the first or second state.
  */
 static int iucv_sock_in_state(struct sock *sk, int state, int state2)
 {
@@ -156,9 +158,9 @@ static int iucv_sock_in_state(struct sock *sk, int state, int state2)
  * iucv_below_msglim() - function to check if messages can be sent
  * @sk:		sock structure
  *
- * Returns true if the send queue length is lower than the message limit.
- * Always returns true if the socket is not connected (no iucv path for
- * checking the message limit).
+ * Returns: true, if either the socket is not connected (no iucv path for
+ * checking the message limit) or if the send queue length is lower
+ * than the message limit.
  */
 static inline int iucv_below_msglim(struct sock *sk)
 {
@@ -883,7 +885,7 @@ static int iucv_sock_getname(struct socket *sock, struct sockaddr *addr,
  * list and the socket data len at index 7 (last byte).
  * See also iucv_msg_length().
  *
- * Returns the error code from the iucv_message_send() call.
+ * Returns: the return code from the iucv_message_send() call.
  */
 static int iucv_send_iprm(struct iucv_path *path, struct iucv_message *msg,
 			  struct sk_buff *skb)
diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c
index 6641c49b09ac..e03bc4a74f67 100644
--- a/net/iucv/iucv.c
+++ b/net/iucv/iucv.c
@@ -687,6 +687,8 @@ static int iucv_cpu_down_prep(unsigned int cpu)
  *
  * @pathid: path identification number.
  * @userdata: 16-bytes of user data.
+ *
+ * Returns: 0 on success, the result of the CP b2f0 IUCV call.
  */
 static int iucv_sever_pathid(u16 pathid, u8 *userdata)
 {
@@ -1092,6 +1094,8 @@ EXPORT_SYMBOL(iucv_message_purge);
  *
  * Internal function used by iucv_message_receive and __iucv_message_receive
  * to receive RMDATA data stored in struct iucv_message.
+ *
+ * Returns: 0
  */
 static int iucv_message_receive_iprmdata(struct iucv_path *path,
 					 struct iucv_message *msg,
@@ -1852,6 +1856,8 @@ static enum cpuhp_state iucv_online;
 
 /**
  * iucv_init - Allocates and initializes various data structures.
+ *
+ * Returns: 0 on success, return code on failure.
  */
 static int __init iucv_init(void)
 {
-- 
2.51.0