clockevents/drivers/arm_global_timer: 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/arm_global_timer.c b/drivers/clocksource/arm_global_timer.c
index 36998fa188459f2390daf751c7cd1e39341bc846..9df0d1699d22b9f6bbaa8089ca71bc9c17895de0 100644 (file)
--- a/drivers/clocksource/arm_global_timer.c
+++ b/drivers/clocksource/arm_global_timer.c
@@ -175,6 +175,7 @@ static int gt_clockevents_init(struct clock_event_device *clk)
        clk->set_state_shutdown = gt_clockevent_shutdown;
        clk->set_state_periodic = gt_clockevent_set_periodic;
        clk->set_state_oneshot = gt_clockevent_shutdown;
+       clk->set_state_oneshot_stopped = gt_clockevent_shutdown;
        clk->set_next_event = gt_clockevent_set_next_event;
        clk->cpumask = cpumask_of(cpu);
        clk->rating = 300;