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x86: Convert PIT to clockevents_config_and_register() 

Let the core do the work.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Link: http://lkml.kernel.org/r/%3C20110518210136.545615675%40linutronix.de%3E
This commit is contained in:
Thomas Gleixner 2011-05-18 21:33:42 +00:00
parent 80b816b736
commit 61ee9a4ba0
1 changed files with 1 additions and 5 deletions
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6
arch/x86/kernel/i8253.c
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@ -93,7 +93,6 @@ static struct clock_event_device pit_ce = {
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
.set_mode = init_pit_timer,
.set_next_event = pit_next_event,
.shift = 32,
.irq = 0,
};
@ -108,11 +107,8 @@ void __init setup_pit_timer(void)
* IO_APIC has been initialized.
*/
pit_ce.cpumask = cpumask_of(smp_processor_id());
pit_ce.mult = div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC, pit_ce.shift);
pit_ce.max_delta_ns = clockevent_delta2ns(0x7FFF, &pit_ce);
pit_ce.min_delta_ns = clockevent_delta2ns(0xF, &pit_ce);
clockevents_register_device(&pit_ce);
clockevents_config_and_register(&pit_ce, CLOCK_TICK_RATE, 0xF, 0x7FFF);
global_clock_event = &pit_ce;
}