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 8fff52fd5093
("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>

diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c
index ff44082a0827d60ff14a00e40001d5900adc8e92..be09bc0b5e269cb3748644456bf5bfb86d329379 100644 (file)
--- a/drivers/clocksource/exynos_mct.c
+++ b/drivers/clocksource/exynos_mct.c
@@ -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;