From: Colin Cross <ccross@android.com>
Date: Fri, 23 Aug 2013 19:45:10 +0000 (-0700)
Subject: cpuidle: coupled: disable interrupts after entering safe state
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=59e998561103a93f294c8d3138dd659af772a5da;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

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.

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>
---

diff --git a/drivers/cpuidle/coupled.c b/drivers/cpuidle/coupled.c
index 2a297f86dbad..db92bcbe6946 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)) {