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| author | Nicholas Piggin <npiggin@gmail.com> | 2017-09-01 14:29:56 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-25 14:23:46 +0100 |
| commit | b86c7b8c5dfb2a68bce79e1ad3fe50e06022d1f6 (patch) | |
| tree | 9372010f6a84110215e8a8f15385b92dffff42eb /drivers/cpuidle/cpuidle.c | |
| parent | 15319d2a49ca1df37d83c868e2c301fcbc87c059 (diff) | |
| download | linux-rt-b86c7b8c5dfb2a68bce79e1ad3fe50e06022d1f6.tar.gz | |
cpuidle: fix broadcast control when broadcast can not be entered
[ Upstream commit f187851b9b4a76952b1158b86434563dd2031103 ]
When failing to enter broadcast timer mode for an idle state that
requires it, a new state is selected that does not require broadcast,
but the broadcast variable remains set. This causes
tick_broadcast_exit to be called despite not having entered broadcast
mode.
This causes the WARN_ON_ONCE(!irqs_disabled()) to trigger in some
cases. It does not appear to cause problems for code today, but seems
to violate the interface so should be fixed.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/cpuidle/cpuidle.c')
| -rw-r--r-- | drivers/cpuidle/cpuidle.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index c73207abb5a4..35237c8d5206 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -189,6 +189,7 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv, return -EBUSY; } target_state = &drv->states[index]; + broadcast = false; } /* Take note of the planned idle state. */ |