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authorKrzysztof Kozlowski <k.kozlowski@samsung.com>2015-01-09 09:27:58 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-01-23 22:31:08 +0100
commitf90b8ad83a6ae984edb6b489ed02e45dadfd263e (patch)
treef3b756682a92783fdb0f2064dc2d3f1b3b47e0bb /drivers/base
parentf5f4eda4c9b9e26ec7d7c8ce083e386016ffc0f8 (diff)
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: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/power/qos.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c
index a8fe4c1a8d07..e56d538d039e 100644
--- a/drivers/base/power/qos.c
+++ b/drivers/base/power/qos.c
@@ -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);
}