On Sat, Sep 12, 2020 at 06:23:36PM -0700, David Miller wrote:

From: Peilin Ye <redacted>
Date: Sat, 12 Sep 2020 06:22:30 -0400

quoted

@@ -291,10 +291,11 @@ static void tipc_group_add_to_tree(struct tipc_group *grp,
 		else if (key > nkey)
 			n = &(*n)->rb_right;
 		else
-			return;
+			return -1;

Use a real error code like "-EEXIST", thank you.

Ah, I'll fix it in v2 soon, sorry about that. I saw another function in
this file returning -1.

Peilin Ye