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authorNicholas Piggin <npiggin@gmail.com>2017-09-01 07:29:56 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-09-28 03:18:07 +0300
commitf187851b9b4a76952b1158b86434563dd2031103 (patch)
treed30189d904af975c880025df370c8e186dad201e /drivers/cpuidle/cpuidle.c
parente19b205be43d11bff638cad4487008c48d21c103 (diff)
downloadlinux-f187851b9b4a76952b1158b86434563dd2031103.tar.xz
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>
Diffstat (limited to 'drivers/cpuidle/cpuidle.c')
-rw-r--r--drivers/cpuidle/cpuidle.c1
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. */