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Commit 07f101d3 authored by Viresh Kumar's avatar Viresh Kumar Committed by Daniel Lezcano
Browse files

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 8fff52fd
("clockevents: Introduce CLOCK_EVT_STATE_ONESHOT_STOPPED state").

Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
parent 3effa3ce

drivers/clocksource/exynos_mct.c

+2 −0
Original line number Diff line number Diff line
@@ -313,6 +313,7 @@ static struct clock_event_device mct_comp_device = { 
	.set_state_periodic	= mct_set_state_periodic,

	.set_state_shutdown	= 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,

};
@@ -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_shutdown = 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->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT;

	evt->rating = 450;