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Date: Fri, 23 Aug 2013 12:45:10 -0700 From: Colin Cross <ccross@...roid.com> To: linux-pm@...r.kernel.org Cc: linux-kernel@...r.kernel.org, Neil Zhang <zhangwm@...vell.com>, Joseph Lo <josephl@...dia.com>, linux-tegra@...r.kernel.org, Colin Cross <ccross@...roid.com>, stable@...r.kernel.org, "Rafael J. Wysocki" <rjw@...k.pl>, Daniel Lezcano <daniel.lezcano@...aro.org> Subject: [PATCH 1/3] cpuidle: coupled: disable interrupts after entering safe state Calling cpuidle_enter_state is expected to return with interrupts enabled, but interrupts must be disabled before starting the ready loop synchronization stage. Call local_irq_disable after each call to cpuidle_enter_state for the safe state. CC: stable@...r.kernel.org Signed-off-by: Colin Cross <ccross@...roid.com> --- drivers/cpuidle/coupled.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/cpuidle/coupled.c b/drivers/cpuidle/coupled.c index 2a297f8..db92bcb 100644 --- a/drivers/cpuidle/coupled.c +++ b/drivers/cpuidle/coupled.c @@ -460,6 +460,7 @@ int cpuidle_enter_state_coupled(struct cpuidle_device *dev, } entered_state = cpuidle_enter_state(dev, drv, dev->safe_state_index); + local_irq_disable(); } /* Read barrier ensures online_count is read after prevent is cleared */ @@ -485,6 +486,7 @@ retry: entered_state = cpuidle_enter_state(dev, drv, dev->safe_state_index); + local_irq_disable(); } if (cpuidle_coupled_clear_pokes(dev->cpu)) { -- 1.8.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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