1 files changed, 4 insertions, 1 deletions

diff --git a/net/tipc/port.h b/net/tipc/port.h
index 3f93454592b6..3087da39ee47 100644
--- a/net/tipc/port.h
+++ b/net/tipc/port.h
@@ -179,9 +179,12 @@ static inline int tipc_port_importance(struct tipc_port *port)
         return msg_importance(&port->phdr);
 }
 
-static inline void tipc_port_set_importance(struct tipc_port *port, int imp)
+static inline int tipc_port_set_importance(struct tipc_port *port, int imp)
 {
+        if (imp > TIPC_CRITICAL_IMPORTANCE)
+                return -EINVAL;
         msg_set_importance(&port->phdr, (u32)imp);
+        return 0;
 }
 
 #endif