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author | Nicolai Stange <nicstange@gmail.com> | 2017-03-30 22:08:20 +0200 |
---|---|---|
committer | John Stultz <john.stultz@linaro.org> | 2017-04-14 13:11:13 -0700 |
commit | c7438ba1133f9cccf230d63e7f978b5a71d468ff (patch) | |
tree | 5dc0888bc5ac8e68155290c81389dd973a760119 /drivers/clocksource/metag_generic.c | |
parent | 8317b53fbe32439c56ba83ad4435b641799b2ce8 (diff) | |
download | op-kernel-dev-c7438ba1133f9cccf230d63e7f978b5a71d468ff.zip op-kernel-dev-c7438ba1133f9cccf230d63e7f978b5a71d468ff.tar.gz |
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@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: James Hogan <james.hogan@imgtec.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Nicolai Stange <nicstange@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'drivers/clocksource/metag_generic.c')
-rw-r--r-- | drivers/clocksource/metag_generic.c | 2 |
1 files changed, 2 insertions, 0 deletions
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); |