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Commit f90b8ad8 authored by Krzysztof Kozlowski's avatar Krzysztof Kozlowski Committed by Rafael J. Wysocki
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PM / QoS: Use lockdep asserts to find missing hold of power.lock 



Add lockdep asserts for holding the dev->power.lock to non-static
functions which require this. They could be used outside of the file so
asserts may help in detecting locking misuse.

Signed-off-by: default avatarKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent f5f4eda4

drivers/base/power/qos.c

+4 −0
Original line number Diff line number Diff line
@@ -64,6 +64,8 @@ enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, s32 mask) 
	struct pm_qos_flags *pqf;

	s32 val;



	lockdep_assert_held(&dev->power.lock);



	if (IS_ERR_OR_NULL(qos))

		return PM_QOS_FLAGS_UNDEFINED;
@@ -104,6 +106,8 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_flags); 
 */

s32 __dev_pm_qos_read_value(struct device *dev)

{

	lockdep_assert_held(&dev->power.lock);



	return IS_ERR_OR_NULL(dev->power.qos) ?

		0 : pm_qos_read_value(&dev->power.qos->resume_latency);

}