From 855703e93627e571f7172085c848ec5abbf2188b Mon Sep 17 00:00:00 2001
From: Carlo Vallati <carlo.vallati@iet.unipi.it>
Date: Thu, 31 Mar 2016 10:09:47 +0200
Subject: [PATCH] Fixed a bug into tsch-schedule - tsch_schedule_add_link that
 causes deadlock if a new link cannot be created

---
 core/net/mac/tsch/tsch-schedule.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/core/net/mac/tsch/tsch-schedule.c b/core/net/mac/tsch/tsch-schedule.c
index 8b15e0faf..e0028c492 100644
--- a/core/net/mac/tsch/tsch-schedule.c
+++ b/core/net/mac/tsch/tsch-schedule.c
@@ -191,6 +191,7 @@ tsch_schedule_add_link(struct tsch_slotframe *slotframe,
       l = memb_alloc(&link_memb);
       if(l == NULL) {
         PRINTF("TSCH-schedule:! add_link memb_alloc failed\n");
+        tsch_release_lock();
       } else {
         static int current_link_handle = 0;
         struct tsch_neighbor *n;