1 files changed, 9 insertions, 1 deletions

diff --git a/kernel/rtmutex.c b/kernel/rtmutex.c
index 255e1662acdb..f9d8482dd487 100644
--- a/kernel/rtmutex.c
+++ b/kernel/rtmutex.c
@@ -11,7 +11,7 @@
  *  See Documentation/rt-mutex-design.txt for details.
  */
 #include <linux/spinlock.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/sched.h>
 #include <linux/timer.h>
 
@@ -579,6 +579,7 @@ __rt_mutex_slowlock(struct rt_mutex *lock, int state,
                     struct rt_mutex_waiter *waiter)
 {
         int ret = 0;
+        int was_disabled;
 
         for (;;) {
                 /* Try to acquire the lock: */
@@ -601,10 +602,17 @@ __rt_mutex_slowlock(struct rt_mutex *lock, int state,
 
                 raw_spin_unlock(&lock->wait_lock);
 
+                was_disabled = irqs_disabled();
+                if (was_disabled)
+                        local_irq_enable();
+
                 debug_rt_mutex_print_deadlock(waiter);
 
                 schedule_rt_mutex(lock);
 
+                if (was_disabled)
+                        local_irq_disable();
+
                 raw_spin_lock(&lock->wait_lock);
                 set_current_state(state);
         }