diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2017-09-01 06:29:56 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-09-28 02:18:07 +0200 |
| commit | f187851b9b4a76952b1158b86434563dd2031103 (patch) | |
| tree | d30189d904af975c880025df370c8e186dad201e | |
| parent | Linux 4.14-rc2 (diff) | |
| download | linux-f187851b9b4a76952b1158b86434563dd2031103.tar.xz linux-f187851b9b4a76952b1158b86434563dd2031103.zip | |
cpuidle: fix broadcast control when broadcast can not be entered
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>
| -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 484cc8909d5c..ed4df58a855e 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -208,6 +208,7 @@ 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. */ |