timers: Fix slack calculation for expired timers

[pandora-kernel.git] / kernel / timer.c

diff --git a/kernel/timer.c b/kernel/timer.c
index 9199f3c..be394af 100644 (file)
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -750,13 +750,14 @@ unsigned long apply_slack(struct timer_list *timer, unsigned long expires)
        unsigned long expires_limit, mask;
        int bit;
 
-       expires_limit = expires + timer->slack;
+       expires_limit = expires;
 
-       if (timer->slack < 0) /* auto slack: use 0.4% */
+       if (timer->slack > -1)
+               expires_limit = expires + timer->slack;
+       else if (time_after(expires, jiffies)) /* auto slack: use 0.4% */
                expires_limit = expires + (expires - jiffies)/256;
 
        mask = expires ^ expires_limit;
-
        if (mask == 0)
                return expires;