unicore32/time: Set ->min_delta_ticks and ->max_delta_ticks

In preparation for making the clockevents core NTP correction aware,
all clockevent device drivers must set ->min_delta_ticks and
->max_delta_ticks rather than ->min_delta_ns and ->max_delta_ns: a
clockevent device's rate is going to change dynamically and thus, the
ratio of ns to ticks ceases to stay invariant.

Make the unicore32 arch's clockevent driver initialize these fields
properly.

This patch alone doesn't introduce any change in functionality as the
clockevents core still looks exclusively at the (untouched) ->min_delta_ns
and ->max_delta_ns. As soon as this has changed, a followup patch will
purge the initialization of ->min_delta_ns and ->max_delta_ns from this
driver.

Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Nicolai Stange <nicstange@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>

diff --git a/arch/unicore32/kernel/time.c b/arch/unicore32/kernel/time.c
index fceaa673f8614f0ef0a375ff9007c813bc8710fe..c6b3fa3ee0b6df006883a262b1d83b349a33ec8d 100644 (file)
--- a/arch/unicore32/kernel/time.c
+++ b/arch/unicore32/kernel/time.c
@@ -91,8 +91,10 @@ void __init time_init(void)
 
        ckevt_puv3_osmr0.max_delta_ns =
                clockevent_delta2ns(0x7fffffff, &ckevt_puv3_osmr0);
+       ckevt_puv3_osmr0.max_delta_ticks = 0x7fffffff;
        ckevt_puv3_osmr0.min_delta_ns =
                clockevent_delta2ns(MIN_OSCR_DELTA * 2, &ckevt_puv3_osmr0) + 1;
+       ckevt_puv3_osmr0.min_delta_ticks = MIN_OSCR_DELTA * 2;
        ckevt_puv3_osmr0.cpumask = cpumask_of(0);
 
        setup_irq(IRQ_TIMER0, &puv3_timer_irq);