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clocksource/drivers/exynos_mct: Clear timer interrupt when shutdown 

commit d2f276c8d3 upstream.

When shutting down the timer, ensure that after we have stopped the
timer any pending interrupts are cleared. This fixes a problem when
suspending, as interrupts are disabled before the timer is stopped,
so the timer interrupt may still be asserted, preventing the system
entering a low power state when the wfi is executed.

Signed-off-by: Stuart Menefy <stuart.menefy@mathembedded.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: <stable@vger.kernel.org> # v4.3+
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Stuart Menefy 2019-02-10 22:51:14 +00:00 committed by Greg Kroah-Hartman
parent c83aa58cea
commit c7a897a6c1
1 changed files with 1 additions and 0 deletions
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1
drivers/clocksource/exynos_mct.c
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@ -411,6 +411,7 @@ static int set_state_shutdown(struct clock_event_device *evt)
mevt = container_of(evt, struct mct_clock_event_device, evt);
exynos4_mct_tick_stop(mevt);
exynos4_mct_tick_clear(mevt);
return 0;
}