[PATCH] hrtimers: set correct initial expiry time for relative SIGEV_NONE timers

The expiry time for relative timers with SIGEV_NONE set was never
updated to the correct value.

Pointed out by George Anzinger.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index 28e72fd0029f..aad6f138d5c9 100644
--- a/kernel/posix-timers.c
+++ b/kernel/posix-timers.c
@@ -724,8 +724,13 @@ common_timer_set(struct k_itimer *timr, int flags,
         timr->it.real.interval = timespec_to_ktime(new_setting->it_interval);
 
         /* SIGEV_NONE timers are not queued ! See common_timer_get */
-        if (((timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE))
+        if (((timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE)) {
+                /* Setup correct expiry time for relative timers */
+                if (mode == HRTIMER_REL)
+                        timer->expires = ktime_add(timer->expires,
+                                                   timer->base->get_time());
                 return 0;
+        }
 
         hrtimer_start(timer, timer->expires, mode);
         return 0;