[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>

diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index 28e72fd..aad6f13 100644 (file)
--- 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;