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clocksource/drivers/exynos_mct: Mark MCT device as CLOCK_EVT_FEAT_PERCPU

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The "mct_tick" is a per-cpu clockevents device. Set the
CLOCK_EVT_FEAT_PERCPU feature to prevent e.g. mct_tick0 being unsafely
designated as the global broadcast timer and instead treat the device as
a per-cpu wakeup timer.

Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Will Deacon <will@kernel.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210608154341.10794-3-will@kernel.org
This commit is contained in:
Will Deacon 2021-06-08 16:43:41 +01:00 committed by Daniel Lezcano
parent ae460fd916
commit 88183788ea
1 changed files with 2 additions and 1 deletions
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3
drivers/clocksource/exynos_mct.c
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@ -465,7 +465,8 @@ static int exynos4_mct_starting_cpu(unsigned int cpu)
evt->set_state_oneshot = set_state_shutdown; evt->set_state_oneshot = set_state_shutdown;
evt->set_state_oneshot_stopped = set_state_shutdown; evt->set_state_oneshot_stopped = set_state_shutdown;
evt->tick_resume = set_state_shutdown; evt->tick_resume = set_state_shutdown;
evt->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT; evt->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT |
CLOCK_EVT_FEAT_PERCPU;
evt->rating = MCT_CLKEVENTS_RATING, evt->rating = MCT_CLKEVENTS_RATING,
exynos4_mct_write(TICK_BASE_CNT, mevt->base + MCT_L_TCNTB_OFFSET); exynos4_mct_write(TICK_BASE_CNT, mevt->base + MCT_L_TCNTB_OFFSET);