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Merge branch 'pm-core'

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* pm-core:
  ACPI / PM: Take SMART_SUSPEND driver flag into account
  PCI / PM: Take SMART_SUSPEND driver flag into account
  PCI / PM: Drop unnecessary invocations of pcibios_pm_ops callbacks
  PM / core: Add SMART_SUSPEND driver flag
  PCI / PM: Use the NEVER_SKIP driver flag
  PM / core: Add NEVER_SKIP and SMART_PREPARE driver flags
  PM / core: Convert timers to use timer_setup()
  PM / core: Fix kerneldoc comments of four functions
  PM / core: Drop legacy class suspend/resume operations
This commit is contained in:
Rafael J. Wysocki
2017-11-13 01:41:26 +01:00
parent 05d658b5b5 05087360fd
commit 1efef68262
17 changed files with 371 additions and 103 deletions
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2
drivers/base/dd.c
View File

@@ -464,6 +464,7 @@ pinctrl_bind_failed:
if (dev->pm_domain && dev->pm_domain->dismiss)
dev->pm_domain->dismiss(dev);
pm_runtime_reinit(dev);
dev_pm_set_driver_flags(dev, 0);
switch (ret) {
case -EPROBE_DEFER:
@@ -869,6 +870,7 @@ static void __device_release_driver(struct device *dev, struct device *parent)
if (dev->pm_domain && dev->pm_domain->dismiss)
dev->pm_domain->dismiss(dev);
pm_runtime_reinit(dev);
dev_pm_set_driver_flags(dev, 0);
klist_remove(&dev->p->knode_driver);
device_pm_check_callbacks(dev);

53
drivers/base/power/main.c
View File

@@ -528,7 +528,7 @@ static void dpm_watchdog_clear(struct dpm_watchdog *wd)
/*------------------------- Resume routines -------------------------*/
/**
* device_resume_noirq - Execute an "early resume" callback for given device.
* device_resume_noirq - Execute a "noirq resume" callback for given device.
* @dev: Device to handle.
* @state: PM transition of the system being carried out.
* @async: If true, the device is being resumed asynchronously.
@@ -848,16 +848,10 @@ static int device_resume(struct device *dev, pm_message_t state, bool async)
goto Driver;
}
if (dev->class) {
if (dev->class->pm) {
info = "class ";
callback = pm_op(dev->class->pm, state);
goto Driver;
} else if (dev->class->resume) {
info = "legacy class ";
callback = dev->class->resume;
goto End;
}
if (dev->class && dev->class->pm) {
info = "class ";
callback = pm_op(dev->class->pm, state);
goto Driver;
}
if (dev->bus) {
@@ -1083,7 +1077,7 @@ static pm_message_t resume_event(pm_message_t sleep_state)
}
/**
* device_suspend_noirq - Execute a "late suspend" callback for given device.
* __device_suspend_noirq - Execute a "noirq suspend" callback for given device.
* @dev: Device to handle.
* @state: PM transition of the system being carried out.
* @async: If true, the device is being suspended asynchronously.
@@ -1243,7 +1237,7 @@ int dpm_suspend_noirq(pm_message_t state)
}
/**
* device_suspend_late - Execute a "late suspend" callback for given device.
* __device_suspend_late - Execute a "late suspend" callback for given device.
* @dev: Device to handle.
* @state: PM transition of the system being carried out.
* @async: If true, the device is being suspended asynchronously.
@@ -1445,7 +1439,7 @@ static void dpm_clear_suppliers_direct_complete(struct device *dev)
}
/**
* device_suspend - Execute "suspend" callbacks for given device.
* __device_suspend - Execute "suspend" callbacks for given device.
* @dev: Device to handle.
* @state: PM transition of the system being carried out.
* @async: If true, the device is being suspended asynchronously.
@@ -1508,17 +1502,10 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async)
goto Run;
}
if (dev->class) {
if (dev->class->pm) {
info = "class ";
callback = pm_op(dev->class->pm, state);
goto Run;
} else if (dev->class->suspend) {
pm_dev_dbg(dev, state, "legacy class ");
error = legacy_suspend(dev, state, dev->class->suspend,
"legacy class ");
goto End;
}
if (dev->class && dev->class->pm) {
info = "class ";
callback = pm_op(dev->class->pm, state);
goto Run;
}
if (dev->bus) {
@@ -1665,6 +1652,9 @@ static int device_prepare(struct device *dev, pm_message_t state)
if (dev->power.syscore)
return 0;
WARN_ON(dev_pm_test_driver_flags(dev, DPM_FLAG_SMART_SUSPEND) &&
!pm_runtime_enabled(dev));
/*
* If a device's parent goes into runtime suspend at the wrong time,
* it won't be possible to resume the device. To prevent this we
@@ -1713,7 +1703,9 @@ unlock:
* applies to suspend transitions, however.
*/
spin_lock_irq(&dev->power.lock);
dev->power.direct_complete = ret > 0 && state.event == PM_EVENT_SUSPEND;
dev->power.direct_complete = state.event == PM_EVENT_SUSPEND &&
pm_runtime_suspended(dev) && ret > 0 &&
!dev_pm_test_driver_flags(dev, DPM_FLAG_NEVER_SKIP);
spin_unlock_irq(&dev->power.lock);
return 0;
}
@@ -1862,11 +1854,16 @@ void device_pm_check_callbacks(struct device *dev)
dev->power.no_pm_callbacks =
(!dev->bus || (pm_ops_is_empty(dev->bus->pm) &&
!dev->bus->suspend && !dev->bus->resume)) &&
(!dev->class || (pm_ops_is_empty(dev->class->pm) &&
!dev->class->suspend && !dev->class->resume)) &&
(!dev->class || pm_ops_is_empty(dev->class->pm)) &&
(!dev->type || pm_ops_is_empty(dev->type->pm)) &&
(!dev->pm_domain || pm_ops_is_empty(&dev->pm_domain->ops)) &&
(!dev->driver || (pm_ops_is_empty(dev->driver->pm) &&
!dev->driver->suspend && !dev->driver->resume));
spin_unlock_irq(&dev->power.lock);
}
bool dev_pm_smart_suspend_and_suspended(struct device *dev)
{
return dev_pm_test_driver_flags(dev, DPM_FLAG_SMART_SUSPEND) &&
pm_runtime_status_suspended(dev);
}

7
drivers/base/power/runtime.c
View File

@@ -894,9 +894,9 @@ static void pm_runtime_work(struct work_struct *work)
*
* Check if the time is right and queue a suspend request.
*/
static void pm_suspend_timer_fn(unsigned long data)
static void pm_suspend_timer_fn(struct timer_list *t)
{
struct device *dev = (struct device *)data;
struct device *dev = from_timer(dev, t, power.suspend_timer);
unsigned long flags;
unsigned long expires;
@@ -1499,8 +1499,7 @@ void pm_runtime_init(struct device *dev)
INIT_WORK(&dev->power.work, pm_runtime_work);
dev->power.timer_expires = 0;
setup_timer(&dev->power.suspend_timer, pm_suspend_timer_fn,
(unsigned long)dev);
timer_setup(&dev->power.suspend_timer, pm_suspend_timer_fn, 0);
init_waitqueue_head(&dev->power.wait_queue);
}

11
drivers/base/power/wakeup.c
View File

@@ -54,7 +54,7 @@ static unsigned int saved_count;
static DEFINE_SPINLOCK(events_lock);
static void pm_wakeup_timer_fn(unsigned long data);
static void pm_wakeup_timer_fn(struct timer_list *t);
static LIST_HEAD(wakeup_sources);
@@ -176,7 +176,7 @@ void wakeup_source_add(struct wakeup_source *ws)
return;
spin_lock_init(&ws->lock);
setup_timer(&ws->timer, pm_wakeup_timer_fn, (unsigned long)ws);
timer_setup(&ws->timer, pm_wakeup_timer_fn, 0);
ws->active = false;
ws->last_time = ktime_get();
@@ -481,8 +481,7 @@ static bool wakeup_source_not_registered(struct wakeup_source *ws)
* Use timer struct to check if the given source is initialized
* by wakeup_source_add.
*/
return ws->timer.function != pm_wakeup_timer_fn ||
ws->timer.data != (unsigned long)ws;
return ws->timer.function != (TIMER_FUNC_TYPE)pm_wakeup_timer_fn;
}
/*
@@ -724,9 +723,9 @@ EXPORT_SYMBOL_GPL(pm_relax);
* in @data if it is currently active and its timer has not been canceled and
* the expiration time of the timer is not in future.
*/
static void pm_wakeup_timer_fn(unsigned long data)
static void pm_wakeup_timer_fn(struct timer_list *t)
{
struct wakeup_source *ws = (struct wakeup_source *)data;
struct wakeup_source *ws = from_timer(ws, t, timer);
unsigned long flags;
spin_lock_irqsave(&ws->lock, flags);