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cpuidle: coupled: disable interrupts after entering safe state

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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.

Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Colin Cross 2013-08-23 12:45:10 -07:00 committed by Rafael J. Wysocki
parent 51f245b895
commit 59e9985611
1 changed files with 2 additions and 0 deletions
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2
drivers/cpuidle/coupled.c
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@ -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)) {