1 files changed, 4 insertions, 0 deletions

diff --git a/litmus/sched_pfp.c b/litmus/sched_pfp.c
index 65f460489aa8..29f1efdcffc6 100644
--- a/litmus/sched_pfp.c
+++ b/litmus/sched_pfp.c
@@ -648,6 +648,8 @@ static void mpcp_vspin_enter(void)
 
                 __add_wait_queue_prio_exclusive(vspin, &wait);
 
+                TS_LOCK_SUSPEND;
+
                 spin_unlock_irqrestore(&vspin->lock, flags);
 
                 preempt_enable_no_resched();
@@ -656,6 +658,8 @@ static void mpcp_vspin_enter(void)
 
                 preempt_disable();
 
+                TS_LOCK_RESUME;
+
                 /* ok, now it is ours */
                 BUG_ON(__get_cpu_var(mpcpvs_vspin) != t);
         }