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clockevents/drivers/exynos_mct: Implement ->set_state_oneshot_stopped() 

set_state_oneshot_stopped() is called by the clkevt core, when the next
event is required at an expiry time of 'KTIME_MAX'. This normally
happens with NO_HZ_{IDLE|FULL} in both LOWRES/HIGHRES modes.

This patch makes the clockevent device to stop on such an event, to
avoid spurious interrupts, as explained by: commit 8fff52fd50
("clockevents: Introduce CLOCK_EVT_STATE_ONESHOT_STOPPED state").

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Viresh Kumar 2015-12-23 16:59:14 +05:30 committed by Daniel Lezcano
parent 3effa3ceea
commit 07f101d33d
1 changed files with 2 additions and 0 deletions
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2
drivers/clocksource/exynos_mct.c
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@ -313,6 +313,7 @@ static struct clock_event_device mct_comp_device = {
.set_state_periodic = mct_set_state_periodic, .set_state_periodic = mct_set_state_periodic,
.set_state_shutdown = mct_set_state_shutdown, .set_state_shutdown = mct_set_state_shutdown,
.set_state_oneshot = mct_set_state_shutdown, .set_state_oneshot = mct_set_state_shutdown,
.set_state_oneshot_stopped = mct_set_state_shutdown,
.tick_resume = mct_set_state_shutdown, .tick_resume = mct_set_state_shutdown,
}; };
@ -452,6 +453,7 @@ static int exynos4_local_timer_setup(struct mct_clock_event_device *mevt)
evt->set_state_periodic = set_state_periodic; evt->set_state_periodic = set_state_periodic;
evt->set_state_shutdown = set_state_shutdown; evt->set_state_shutdown = set_state_shutdown;
evt->set_state_oneshot = set_state_shutdown; evt->set_state_oneshot = set_state_shutdown;
evt->set_state_oneshot_stopped = set_state_shutdown;
evt->tick_resume = set_state_shutdown; evt->tick_resume = set_state_shutdown;
evt->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT; evt->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT;
evt->rating = 450; evt->rating = 450;