s390/time: improve comparison for tod steering

It doesn't make sense to add zero shifted by 15. It's still zero.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 3170596..513e59d 100644 (file)
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -237,7 +237,7 @@ static u64 read_tod_clock(struct clocksource *cs)
        preempt_disable(); /* protect from changes to steering parameters */
        now = get_tod_clock();
        adj = tod_steering_end - now;
-       if (unlikely((s64) adj >= 0))
+       if (unlikely((s64) adj > 0))
                /*
                 * manually steer by 1 cycle every 2^16 cycles. This
                 * corresponds to shifting the tod delta by 15. 1s is