3.8.13.10 -stable review patch. If anyone has any objections, please let me know.
------------------ From: Colin Cross <[email protected]> commit 59e998561103a93f294c8d3138dd659af772a5da upstream. 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 <[email protected]> Signed-off-by: Colin Cross <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]> Signed-off-by: Kamal Mostafa <[email protected]> --- drivers/cpuidle/coupled.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/cpuidle/coupled.c b/drivers/cpuidle/coupled.c index dc9e647..5d39627 100644 --- a/drivers/cpuidle/coupled.c +++ b/drivers/cpuidle/coupled.c @@ -470,6 +470,7 @@ 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 */ @@ -514,6 +515,7 @@ retry: entered_state = cpuidle_enter_state(dev, drv, dev->safe_state_index); + local_irq_disable(); } if (cpuidle_coupled_clear_pokes(dev->cpu)) { -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
