1 files changed, 7 insertions, 4 deletions

diff --git a/kernel/futex.c b/kernel/futex.c
index 62cbd648e28a..e10c5c8786a6 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -1229,13 +1229,16 @@ static int futex_wait(u32 __user *uaddr, int fshared,
                 if (!abs_time)
                         schedule();
                 else {
+                        unsigned long slack;
+                        slack = current->timer_slack_ns;
+                        if (rt_task(current))
+                                slack = 0;
                         hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC,
                                                 HRTIMER_MODE_ABS);
                         hrtimer_init_sleeper(&t, current);
-                        t.timer.expires = *abs_time;
+                        hrtimer_set_expires_range_ns(&t.timer, *abs_time, slack);
 
-                        hrtimer_start(&t.timer, t.timer.expires,
-                                                HRTIMER_MODE_ABS);
+                        hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
                         if (!hrtimer_active(&t.timer))
                                 t.task = NULL;
 
@@ -1337,7 +1340,7 @@ static int futex_lock_pi(u32 __user *uaddr, int fshared,
                 hrtimer_init_on_stack(&to->timer, CLOCK_REALTIME,
                                       HRTIMER_MODE_ABS);
                 hrtimer_init_sleeper(to, current);
-                to->timer.expires = *time;
+                hrtimer_set_expires(&to->timer, *time);
         }
 
         q.pi_state = NULL;