diff options
| author | Colin Cross <ccross@android.com> | 2013-08-23 23:45:10 +0400 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-08-30 00:11:38 +0400 |
| commit | 59e998561103a93f294c8d3138dd659af772a5da (patch) | |
| tree | ef7bc435dbe2346af94992c06543b91d5e49164a /drivers/cpuidle | |
| parent | 51f245b895e3fe4cbac0b2633e54a1830864a83f (diff) | |
| download | linux-59e998561103a93f294c8d3138dd659af772a5da.tar.xz | |
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>
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/coupled.c | 2 |
1 files changed, 2 insertions, 0 deletions
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)) { |