diff options
Diffstat (limited to 'drivers/base/power')
-rw-r--r-- | drivers/base/power/domain.c | 6 | ||||
-rw-r--r-- | drivers/base/power/generic_ops.c | 2 | ||||
-rw-r--r-- | drivers/base/power/main.c | 2 | ||||
-rw-r--r-- | drivers/base/power/opp.c | 1 | ||||
-rw-r--r-- | drivers/base/power/qos.c | 60 | ||||
-rw-r--r-- | drivers/base/power/runtime.c | 2 |
6 files changed, 54 insertions, 19 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 9a6b05a35603..7072404c8b6d 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -920,7 +920,7 @@ static int pm_genpd_prepare(struct device *dev) pm_wakeup_event(dev, 0); if (pm_wakeup_pending()) { - pm_runtime_put_sync(dev); + pm_runtime_put(dev); return -EBUSY; } @@ -961,7 +961,7 @@ static int pm_genpd_prepare(struct device *dev) pm_runtime_enable(dev); } - pm_runtime_put_sync(dev); + pm_runtime_put(dev); return ret; } @@ -1327,7 +1327,7 @@ static void pm_genpd_complete(struct device *dev) pm_generic_complete(dev); pm_runtime_set_active(dev); pm_runtime_enable(dev); - pm_runtime_idle(dev); + pm_request_idle(dev); } } diff --git a/drivers/base/power/generic_ops.c b/drivers/base/power/generic_ops.c index d03d290f31c2..bfd898b8988e 100644 --- a/drivers/base/power/generic_ops.c +++ b/drivers/base/power/generic_ops.c @@ -324,6 +324,6 @@ void pm_generic_complete(struct device *dev) * Let runtime PM try to suspend devices that haven't been in use before * going into the system-wide sleep state we're resuming from. */ - pm_runtime_idle(dev); + pm_request_idle(dev); } #endif /* CONFIG_PM_SLEEP */ diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 15beb500a4e4..5a9b6569dd74 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -756,7 +756,7 @@ static void device_complete(struct device *dev, pm_message_t state) device_unlock(dev); - pm_runtime_put_sync(dev); + pm_runtime_put(dev); } /** diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c index 32ee0fc7ea54..f0077cb8e249 100644 --- a/drivers/base/power/opp.c +++ b/drivers/base/power/opp.c @@ -55,6 +55,7 @@ * @rate: Frequency in hertz * @u_volt: Nominal voltage in microvolts corresponding to this OPP * @dev_opp: points back to the device_opp struct this opp belongs to + * @head: RCU callback head used for deferred freeing * * This structure stores the OPP information for a given device. */ diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index 5f74587ef258..71671c42ef45 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -46,6 +46,7 @@ #include "power.h" static DEFINE_MUTEX(dev_pm_qos_mtx); +static DEFINE_MUTEX(dev_pm_qos_sysfs_mtx); static BLOCKING_NOTIFIER_HEAD(dev_pm_notifiers); @@ -216,12 +217,17 @@ void dev_pm_qos_constraints_destroy(struct device *dev) struct pm_qos_constraints *c; struct pm_qos_flags *f; - mutex_lock(&dev_pm_qos_mtx); + mutex_lock(&dev_pm_qos_sysfs_mtx); /* * If the device's PM QoS resume latency limit or PM QoS flags have been * exposed to user space, they have to be hidden at this point. */ + pm_qos_sysfs_remove_latency(dev); + pm_qos_sysfs_remove_flags(dev); + + mutex_lock(&dev_pm_qos_mtx); + __dev_pm_qos_hide_latency_limit(dev); __dev_pm_qos_hide_flags(dev); @@ -254,6 +260,8 @@ void dev_pm_qos_constraints_destroy(struct device *dev) out: mutex_unlock(&dev_pm_qos_mtx); + + mutex_unlock(&dev_pm_qos_sysfs_mtx); } /** @@ -558,6 +566,14 @@ static void __dev_pm_qos_drop_user_request(struct device *dev, kfree(req); } +static void dev_pm_qos_drop_user_request(struct device *dev, + enum dev_pm_qos_req_type type) +{ + mutex_lock(&dev_pm_qos_mtx); + __dev_pm_qos_drop_user_request(dev, type); + mutex_unlock(&dev_pm_qos_mtx); +} + /** * dev_pm_qos_expose_latency_limit - Expose PM QoS latency limit to user space. * @dev: Device whose PM QoS latency limit is to be exposed to user space. @@ -581,6 +597,8 @@ int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value) return ret; } + mutex_lock(&dev_pm_qos_sysfs_mtx); + mutex_lock(&dev_pm_qos_mtx); if (IS_ERR_OR_NULL(dev->power.qos)) @@ -591,26 +609,27 @@ int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value) if (ret < 0) { __dev_pm_qos_remove_request(req); kfree(req); + mutex_unlock(&dev_pm_qos_mtx); goto out; } - dev->power.qos->latency_req = req; + + mutex_unlock(&dev_pm_qos_mtx); + ret = pm_qos_sysfs_add_latency(dev); if (ret) - __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY); + dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY); out: - mutex_unlock(&dev_pm_qos_mtx); + mutex_unlock(&dev_pm_qos_sysfs_mtx); return ret; } EXPORT_SYMBOL_GPL(dev_pm_qos_expose_latency_limit); static void __dev_pm_qos_hide_latency_limit(struct device *dev) { - if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->latency_req) { - pm_qos_sysfs_remove_latency(dev); + if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->latency_req) __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY); - } } /** @@ -619,9 +638,15 @@ static void __dev_pm_qos_hide_latency_limit(struct device *dev) */ void dev_pm_qos_hide_latency_limit(struct device *dev) { + mutex_lock(&dev_pm_qos_sysfs_mtx); + + pm_qos_sysfs_remove_latency(dev); + mutex_lock(&dev_pm_qos_mtx); __dev_pm_qos_hide_latency_limit(dev); mutex_unlock(&dev_pm_qos_mtx); + + mutex_unlock(&dev_pm_qos_sysfs_mtx); } EXPORT_SYMBOL_GPL(dev_pm_qos_hide_latency_limit); @@ -649,6 +674,8 @@ int dev_pm_qos_expose_flags(struct device *dev, s32 val) } pm_runtime_get_sync(dev); + mutex_lock(&dev_pm_qos_sysfs_mtx); + mutex_lock(&dev_pm_qos_mtx); if (IS_ERR_OR_NULL(dev->power.qos)) @@ -659,16 +686,19 @@ int dev_pm_qos_expose_flags(struct device *dev, s32 val) if (ret < 0) { __dev_pm_qos_remove_request(req); kfree(req); + mutex_unlock(&dev_pm_qos_mtx); goto out; } - dev->power.qos->flags_req = req; + + mutex_unlock(&dev_pm_qos_mtx); + ret = pm_qos_sysfs_add_flags(dev); if (ret) - __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_FLAGS); + dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_FLAGS); out: - mutex_unlock(&dev_pm_qos_mtx); + mutex_unlock(&dev_pm_qos_sysfs_mtx); pm_runtime_put(dev); return ret; } @@ -676,10 +706,8 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_expose_flags); static void __dev_pm_qos_hide_flags(struct device *dev) { - if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->flags_req) { - pm_qos_sysfs_remove_flags(dev); + if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->flags_req) __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_FLAGS); - } } /** @@ -689,9 +717,15 @@ static void __dev_pm_qos_hide_flags(struct device *dev) void dev_pm_qos_hide_flags(struct device *dev) { pm_runtime_get_sync(dev); + mutex_lock(&dev_pm_qos_sysfs_mtx); + + pm_qos_sysfs_remove_flags(dev); + mutex_lock(&dev_pm_qos_mtx); __dev_pm_qos_hide_flags(dev); mutex_unlock(&dev_pm_qos_mtx); + + mutex_unlock(&dev_pm_qos_sysfs_mtx); pm_runtime_put(dev); } EXPORT_SYMBOL_GPL(dev_pm_qos_hide_flags); diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index 1244930e3d7a..ef13ad08afb2 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -1400,5 +1400,5 @@ void pm_runtime_remove(struct device *dev) if (dev->power.runtime_status == RPM_ACTIVE) pm_runtime_set_suspended(dev); if (dev->power.irq_safe && dev->parent) - pm_runtime_put_sync(dev->parent); + pm_runtime_put(dev->parent); } |