Commit-ID: c7438ba1133f9cccf230d63e7f978b5a71d468ff Gitweb: http://git.kernel.org/tip/c7438ba1133f9cccf230d63e7f978b5a71d468ff Author: Nicolai Stange <nicstange@xxxxxxxxx> AuthorDate: Thu, 30 Mar 2017 22:08:20 +0200 Committer: John Stultz <john.stultz@xxxxxxxxxx> CommitDate: Fri, 14 Apr 2017 13:11:13 -0700 clockevents/drivers/metag: 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 metag_generic 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: James Hogan <james.hogan@xxxxxxxxxx> Acked-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx> Signed-off-by: Nicolai Stange <nicstange@xxxxxxxxx> Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx> --- drivers/clocksource/metag_generic.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/clocksource/metag_generic.c b/drivers/clocksource/metag_generic.c index 6fcf965..3e5fa2f 100644 --- a/drivers/clocksource/metag_generic.c +++ b/drivers/clocksource/metag_generic.c @@ -114,7 +114,9 @@ static int arch_timer_starting_cpu(unsigned int cpu) clk->mult = div_sc(hwtimer_freq, NSEC_PER_SEC, clk->shift); clk->max_delta_ns = clockevent_delta2ns(0x7fffffff, clk); + clk->max_delta_ticks = 0x7fffffff; clk->min_delta_ns = clockevent_delta2ns(0xf, clk); + clk->min_delta_ticks = 0xf; clk->cpumask = cpumask_of(cpu); clockevents_register_device(clk); -- 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
|