Commit-ID: 547733c58dc3d2a50af762d4fdaf1d552e6b31cd Gitweb: http://git.kernel.org/tip/547733c58dc3d2a50af762d4fdaf1d552e6b31cd Author: Nicolai Stange <nicstange@xxxxxxxxx> AuthorDate: Thu, 30 Mar 2017 22:10:21 +0200 Committer: John Stultz <john.stultz@xxxxxxxxxx> CommitDate: Fri, 14 Apr 2017 13:11:15 -0700 clockevents/drivers/atlas7: 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 timer-atlas7 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@xxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx> Cc: Richard Cochran <richardcochran@xxxxxxxxx> Cc: Prarit Bhargava <prarit@xxxxxxxxxx> Cc: Stephen Boyd <sboyd@xxxxxxxxxxxxxx> Cc: Barry Song <baohua@xxxxxxxxxx> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx Acked-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx> Signed-off-by: Nicolai Stange <nicstange@xxxxxxxxx> Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx> --- drivers/clocksource/timer-atlas7.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/clocksource/timer-atlas7.c b/drivers/clocksource/timer-atlas7.c index 3d8a181..50300ee 100644 --- a/drivers/clocksource/timer-atlas7.c +++ b/drivers/clocksource/timer-atlas7.c @@ -192,7 +192,9 @@ static int sirfsoc_local_timer_starting_cpu(unsigned int cpu) ce->set_next_event = sirfsoc_timer_set_next_event; clockevents_calc_mult_shift(ce, atlas7_timer_rate, 60); ce->max_delta_ns = clockevent_delta2ns(-2, ce); + ce->max_delta_ticks = (unsigned long)-2; ce->min_delta_ns = clockevent_delta2ns(2, ce); + ce->min_delta_ticks = 2; ce->cpumask = cpumask_of(cpu); action->dev_id = ce; -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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