tipc: eliminate risk of double link_up events

[cascardo/linux.git] / net / tipc / node.c

diff --git a/net/tipc/node.c b/net/tipc/node.c
index d903f56..e01e2c7 100644 (file)
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -542,7 +542,7 @@ static void __tipc_node_link_up(struct tipc_node *n, int bearer_id,
        struct tipc_link *ol = node_active_link(n, 0);
        struct tipc_link *nl = n->links[bearer_id].link;
 
-       if (!nl)
+       if (!nl || tipc_link_is_up(nl))
                return;
 
        tipc_link_fsm_evt(nl, LINK_ESTABLISH_EVT);