diff options
| author | Stuart Menefy <stuart.menefy@mathembedded.com> | 2019-02-10 22:51:14 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-23 08:44:35 +0100 |
| commit | 185ca832f7d74c2bbb4001ea22a5ca0819caa991 (patch) | |
| tree | 7996bcf6acd815621ea6fff05f4f211906746a14 | |
| parent | 3e08ffef428689e452e169bd23ae7b35affb6f8f (diff) | |
clocksource/drivers/exynos_mct: Clear timer interrupt when shutdown
commit d2f276c8d3c224d5b493c42b6cf006ae4e64fb1c 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>
| -rw-r--r-- | drivers/clocksource/exynos_mct.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c index f6734fbd1de5..d65a6036d610 100644 --- a/drivers/clocksource/exynos_mct.c +++ b/drivers/clocksource/exynos_mct.c @@ -402,6 +402,7 @@ 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; } |