7 files changed, 273 insertions, 180 deletions

diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c
index e18ba676cdf6..b69bcb37c830 100644
--- a/drivers/base/power/clock_ops.c
+++ b/drivers/base/power/clock_ops.c
@@ -259,39 +259,6 @@ int pm_clk_add_clk(struct device *dev, struct clk *clk)
 }
 EXPORT_SYMBOL_GPL(pm_clk_add_clk);
 
-
-/**
- * of_pm_clk_add_clk - Start using a device clock for power management.
- * @dev: Device whose clock is going to be used for power management.
- * @name: Name of clock that is going to be used for power management.
- *
- * Add the clock described in the 'clocks' device-tree node that matches
- * with the 'name' provided, to the list of clocks used for the power
- * management of @dev. On success, returns 0. Returns a negative error
- * code if the clock is not found or cannot be added.
- */
-int of_pm_clk_add_clk(struct device *dev, const char *name)
-{
-	struct clk *clk;
-	int ret;
-
-	if (!dev || !dev->of_node || !name)
-		return -EINVAL;
-
-	clk = of_clk_get_by_name(dev->of_node, name);
-	if (IS_ERR(clk))
-		return PTR_ERR(clk);
-
-	ret = pm_clk_add_clk(dev, clk);
-	if (ret) {
-		clk_put(clk);
-		return ret;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(of_pm_clk_add_clk);
-
 /**
  * of_pm_clk_add_clks - Start using device clock(s) for power management.
  * @dev: Device whose clock(s) is going to be used for power management.
@@ -377,46 +344,6 @@ static void __pm_clk_remove(struct pm_clock_entry *ce)
 }
 
 /**
- * pm_clk_remove - Stop using a device clock for power management.
- * @dev: Device whose clock should not be used for PM any more.
- * @con_id: Connection ID of the clock.
- *
- * Remove the clock represented by @con_id from the list of clocks used for
- * the power management of @dev.
- */
-void pm_clk_remove(struct device *dev, const char *con_id)
-{
-	struct pm_subsys_data *psd = dev_to_psd(dev);
-	struct pm_clock_entry *ce;
-
-	if (!psd)
-		return;
-
-	pm_clk_list_lock(psd);
-
-	list_for_each_entry(ce, &psd->clock_list, node) {
-		if (!con_id && !ce->con_id)
-			goto remove;
-		else if (!con_id || !ce->con_id)
-			continue;
-		else if (!strcmp(con_id, ce->con_id))
-			goto remove;
-	}
-
-	pm_clk_list_unlock(psd);
-	return;
-
- remove:
-	list_del(&ce->node);
-	if (ce->enabled_when_prepared)
-		psd->clock_op_might_sleep--;
-	pm_clk_list_unlock(psd);
-
-	__pm_clk_remove(ce);
-}
-EXPORT_SYMBOL_GPL(pm_clk_remove);
-
-/**
  * pm_clk_remove_clk - Stop using a device clock for power management.
  * @dev: Device whose clock should not be used for PM any more.
  * @clk: Clock pointer
diff --git a/drivers/base/power/generic_ops.c b/drivers/base/power/generic_ops.c
index 4fa525668cb7..6502720bb564 100644
--- a/drivers/base/power/generic_ops.c
+++ b/drivers/base/power/generic_ops.c
@@ -115,18 +115,6 @@ int pm_generic_freeze_noirq(struct device *dev)
 EXPORT_SYMBOL_GPL(pm_generic_freeze_noirq);
 
 /**
- * pm_generic_freeze_late - Generic freeze_late callback for subsystems.
- * @dev: Device to freeze.
- */
-int pm_generic_freeze_late(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->freeze_late ? pm->freeze_late(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_freeze_late);
-
-/**
  * pm_generic_freeze - Generic freeze callback for subsystems.
  * @dev: Device to freeze.
  */
@@ -187,18 +175,6 @@ int pm_generic_thaw_noirq(struct device *dev)
 EXPORT_SYMBOL_GPL(pm_generic_thaw_noirq);
 
 /**
- * pm_generic_thaw_early - Generic thaw_early callback for subsystems.
- * @dev: Device to thaw.
- */
-int pm_generic_thaw_early(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->thaw_early ? pm->thaw_early(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_thaw_early);
-
-/**
  * pm_generic_thaw - Generic thaw callback for subsystems.
  * @dev: Device to thaw.
  */
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 4a67e83300e1..1926454c7a7e 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -249,7 +249,7 @@ static int dpm_wait_fn(struct device *dev, void *async_ptr)
 
 static void dpm_wait_for_children(struct device *dev, bool async)
 {
-       device_for_each_child(dev, &async, dpm_wait_fn);
+	device_for_each_child(dev, &async, dpm_wait_fn);
 }
 
 static void dpm_wait_for_suppliers(struct device *dev, bool async)
@@ -496,6 +496,7 @@ struct dpm_watchdog {
 	struct device		*dev;
 	struct task_struct	*tsk;
 	struct timer_list	timer;
+	bool			fatal;
 };
 
 #define DECLARE_DPM_WATCHDOG_ON_STACK(wd) \
@@ -512,11 +513,23 @@ struct dpm_watchdog {
 static void dpm_watchdog_handler(struct timer_list *t)
 {
 	struct dpm_watchdog *wd = from_timer(wd, t, timer);
+	struct timer_list *timer = &wd->timer;
+	unsigned int time_left;
+
+	if (wd->fatal) {
+		dev_emerg(wd->dev, "**** DPM device timeout ****\n");
+		show_stack(wd->tsk, NULL, KERN_EMERG);
+		panic("%s %s: unrecoverable failure\n",
+			dev_driver_string(wd->dev), dev_name(wd->dev));
+	}
+
+	time_left = CONFIG_DPM_WATCHDOG_TIMEOUT - CONFIG_DPM_WATCHDOG_WARNING_TIMEOUT;
+	dev_warn(wd->dev, "**** DPM device timeout after %u seconds; %u seconds until panic ****\n",
+		 CONFIG_DPM_WATCHDOG_WARNING_TIMEOUT, time_left);
+	show_stack(wd->tsk, NULL, KERN_WARNING);
 
-	dev_emerg(wd->dev, "**** DPM device timeout ****\n");
-	show_stack(wd->tsk, NULL, KERN_EMERG);
-	panic("%s %s: unrecoverable failure\n",
-		dev_driver_string(wd->dev), dev_name(wd->dev));
+	wd->fatal = true;
+	mod_timer(timer, jiffies + HZ * time_left);
 }
 
 /**
@@ -530,10 +543,11 @@ static void dpm_watchdog_set(struct dpm_watchdog *wd, struct device *dev)
 
 	wd->dev = dev;
 	wd->tsk = current;
+	wd->fatal = CONFIG_DPM_WATCHDOG_TIMEOUT == CONFIG_DPM_WATCHDOG_WARNING_TIMEOUT;
 
 	timer_setup_on_stack(timer, dpm_watchdog_handler, 0);
 	/* use same timeout value for both suspend and resume */
-	timer->expires = jiffies + HZ * CONFIG_DPM_WATCHDOG_TIMEOUT;
+	timer->expires = jiffies + HZ * CONFIG_DPM_WATCHDOG_WARNING_TIMEOUT;
 	add_timer(timer);
 }
 
@@ -545,7 +559,7 @@ static void dpm_watchdog_clear(struct dpm_watchdog *wd)
 {
 	struct timer_list *timer = &wd->timer;
 
-	del_timer_sync(timer);
+	timer_delete_sync(timer);
 	destroy_timer_on_stack(timer);
 }
 #else
@@ -585,27 +599,34 @@ static bool is_async(struct device *dev)
 
 static bool dpm_async_fn(struct device *dev, async_func_t func)
 {
-	reinit_completion(&dev->power.completion);
+	if (!is_async(dev))
+		return false;
 
-	if (is_async(dev)) {
-		dev->power.async_in_progress = true;
+	dev->power.work_in_progress = true;
 
-		get_device(dev);
+	get_device(dev);
+
+	if (async_schedule_dev_nocall(func, dev))
+		return true;
 
-		if (async_schedule_dev_nocall(func, dev))
-			return true;
+	put_device(dev);
 
-		put_device(dev);
-	}
 	/*
-	 * Because async_schedule_dev_nocall() above has returned false or it
-	 * has not been called at all, func() is not running and it is safe to
-	 * update the async_in_progress flag without extra synchronization.
+	 * async_schedule_dev_nocall() above has returned false, so func() is
+	 * not running and it is safe to update power.work_in_progress without
+	 * extra synchronization.
 	 */
-	dev->power.async_in_progress = false;
+	dev->power.work_in_progress = false;
+
 	return false;
 }
 
+static void dpm_clear_async_state(struct device *dev)
+{
+	reinit_completion(&dev->power.completion);
+	dev->power.work_in_progress = false;
+}
+
 /**
  * device_resume_noirq - Execute a "noirq resume" callback for given device.
  * @dev: Device to handle.
@@ -642,12 +663,12 @@ static void device_resume_noirq(struct device *dev, pm_message_t state, bool asy
 	 * so change its status accordingly.
 	 *
 	 * Otherwise, the device is going to be resumed, so set its PM-runtime
-	 * status to "active", but do that only if DPM_FLAG_SMART_SUSPEND is set
-	 * to avoid confusing drivers that don't use it.
+	 * status to "active" unless its power.smart_suspend flag is clear, in
+	 * which case it is not necessary to update its PM-runtime status.
 	 */
 	if (skip_resume)
 		pm_runtime_set_suspended(dev);
-	else if (dev_pm_skip_suspend(dev))
+	else if (dev_pm_smart_suspend(dev))
 		pm_runtime_set_active(dev);
 
 	if (dev->pm_domain) {
@@ -715,14 +736,16 @@ static void dpm_noirq_resume_devices(pm_message_t state)
 	 * Trigger the resume of "async" devices upfront so they don't have to
 	 * wait for the "non-async" ones they don't depend on.
 	 */
-	list_for_each_entry(dev, &dpm_noirq_list, power.entry)
+	list_for_each_entry(dev, &dpm_noirq_list, power.entry) {
+		dpm_clear_async_state(dev);
 		dpm_async_fn(dev, async_resume_noirq);
+	}
 
 	while (!list_empty(&dpm_noirq_list)) {
 		dev = to_device(dpm_noirq_list.next);
 		list_move_tail(&dev->power.entry, &dpm_late_early_list);
 
-		if (!dev->power.async_in_progress) {
+		if (!dev->power.work_in_progress) {
 			get_device(dev);
 
 			mutex_unlock(&dpm_list_mtx);
@@ -855,14 +878,16 @@ void dpm_resume_early(pm_message_t state)
 	 * Trigger the resume of "async" devices upfront so they don't have to
 	 * wait for the "non-async" ones they don't depend on.
 	 */
-	list_for_each_entry(dev, &dpm_late_early_list, power.entry)
+	list_for_each_entry(dev, &dpm_late_early_list, power.entry) {
+		dpm_clear_async_state(dev);
 		dpm_async_fn(dev, async_resume_early);
+	}
 
 	while (!list_empty(&dpm_late_early_list)) {
 		dev = to_device(dpm_late_early_list.next);
 		list_move_tail(&dev->power.entry, &dpm_suspended_list);
 
-		if (!dev->power.async_in_progress) {
+		if (!dev->power.work_in_progress) {
 			get_device(dev);
 
 			mutex_unlock(&dpm_list_mtx);
@@ -913,8 +938,20 @@ static void device_resume(struct device *dev, pm_message_t state, bool async)
 	if (dev->power.syscore)
 		goto Complete;
 
+	if (!dev->power.is_suspended)
+		goto Complete;
+
+	dev->power.is_suspended = false;
+
 	if (dev->power.direct_complete) {
-		/* Match the pm_runtime_disable() in __device_suspend(). */
+		/*
+		 * Allow new children to be added under the device after this
+		 * point if it has no PM callbacks.
+		 */
+		if (dev->power.no_pm_callbacks)
+			dev->power.is_prepared = false;
+
+		/* Match the pm_runtime_disable() in device_suspend(). */
 		pm_runtime_enable(dev);
 		goto Complete;
 	}
@@ -931,9 +968,6 @@ static void device_resume(struct device *dev, pm_message_t state, bool async)
 	 */
 	dev->power.is_prepared = false;
 
-	if (!dev->power.is_suspended)
-		goto Unlock;
-
 	if (dev->pm_domain) {
 		info = "power domain ";
 		callback = pm_op(&dev->pm_domain->ops, state);
@@ -971,9 +1005,7 @@ static void device_resume(struct device *dev, pm_message_t state, bool async)
 
  End:
 	error = dpm_run_callback(callback, dev, state, info);
-	dev->power.is_suspended = false;
 
- Unlock:
 	device_unlock(dev);
 	dpm_watchdog_clear(&wd);
 
@@ -1021,14 +1053,16 @@ void dpm_resume(pm_message_t state)
 	 * Trigger the resume of "async" devices upfront so they don't have to
 	 * wait for the "non-async" ones they don't depend on.
 	 */
-	list_for_each_entry(dev, &dpm_suspended_list, power.entry)
+	list_for_each_entry(dev, &dpm_suspended_list, power.entry) {
+		dpm_clear_async_state(dev);
 		dpm_async_fn(dev, async_resume);
+	}
 
 	while (!list_empty(&dpm_suspended_list)) {
 		dev = to_device(dpm_suspended_list.next);
 		list_move_tail(&dev->power.entry, &dpm_prepared_list);
 
-		if (!dev->power.async_in_progress) {
+		if (!dev->power.work_in_progress) {
 			get_device(dev);
 
 			mutex_unlock(&dpm_list_mtx);
@@ -1093,6 +1127,8 @@ static void device_complete(struct device *dev, pm_message_t state)
 	device_unlock(dev);
 
 out:
+	/* If enabling runtime PM for the device is blocked, unblock it. */
+	pm_runtime_unblock(dev);
 	pm_runtime_put(dev);
 }
 
@@ -1254,14 +1290,13 @@ Skip:
 	dev->power.is_noirq_suspended = true;
 
 	/*
-	 * Skipping the resume of devices that were in use right before the
-	 * system suspend (as indicated by their PM-runtime usage counters)
-	 * would be suboptimal.  Also resume them if doing that is not allowed
-	 * to be skipped.
+	 * Devices must be resumed unless they are explicitly allowed to be left
+	 * in suspend, but even in that case skipping the resume of devices that
+	 * were in use right before the system suspend (as indicated by their
+	 * runtime PM usage counters and child counters) would be suboptimal.
 	 */
-	if (atomic_read(&dev->power.usage_count) > 1 ||
-	    !(dev_pm_test_driver_flags(dev, DPM_FLAG_MAY_SKIP_RESUME) &&
-	      dev->power.may_skip_resume))
+	if (!(dev_pm_test_driver_flags(dev, DPM_FLAG_MAY_SKIP_RESUME) &&
+	      dev->power.may_skip_resume) || !pm_runtime_need_not_resume(dev))
 		dev->power.must_resume = true;
 
 	if (dev->power.must_resume)
@@ -1298,6 +1333,7 @@ static int dpm_noirq_suspend_devices(pm_message_t state)
 
 		list_move(&dev->power.entry, &dpm_noirq_list);
 
+		dpm_clear_async_state(dev);
 		if (dpm_async_fn(dev, async_suspend_noirq))
 			continue;
 
@@ -1382,6 +1418,10 @@ static int device_suspend_late(struct device *dev, pm_message_t state, bool asyn
 	TRACE_DEVICE(dev);
 	TRACE_SUSPEND(0);
 
+	/*
+	 * Disable runtime PM for the device without checking if there is a
+	 * pending resume request for it.
+	 */
 	__pm_runtime_disable(dev, false);
 
 	dpm_wait_for_subordinate(dev, async);
@@ -1471,6 +1511,7 @@ int dpm_suspend_late(pm_message_t state)
 
 		list_move(&dev->power.entry, &dpm_late_early_list);
 
+		dpm_clear_async_state(dev);
 		if (dpm_async_fn(dev, async_suspend_late))
 			continue;
 
@@ -1628,6 +1669,7 @@ static int device_suspend(struct device *dev, pm_message_t state, bool async)
 			pm_runtime_disable(dev);
 			if (pm_runtime_status_suspended(dev)) {
 				pm_dev_dbg(dev, state, "direct-complete ");
+				dev->power.is_suspended = true;
 				goto Complete;
 			}
 
@@ -1738,6 +1780,7 @@ int dpm_suspend(pm_message_t state)
 
 		list_move(&dev->power.entry, &dpm_suspended_list);
 
+		dpm_clear_async_state(dev);
 		if (dpm_async_fn(dev, async_suspend))
 			continue;
 
@@ -1769,6 +1812,46 @@ int dpm_suspend(pm_message_t state)
 	return error;
 }
 
+static bool device_prepare_smart_suspend(struct device *dev)
+{
+	struct device_link *link;
+	bool ret = true;
+	int idx;
+
+	/*
+	 * The "smart suspend" feature is enabled for devices whose drivers ask
+	 * for it and for devices without PM callbacks.
+	 *
+	 * However, if "smart suspend" is not enabled for the device's parent
+	 * or any of its suppliers that take runtime PM into account, it cannot
+	 * be enabled for the device either.
+	 */
+	if (!dev->power.no_pm_callbacks &&
+	    !dev_pm_test_driver_flags(dev, DPM_FLAG_SMART_SUSPEND))
+		return false;
+
+	if (dev->parent && !dev_pm_smart_suspend(dev->parent) &&
+	    !dev->parent->power.ignore_children && !pm_runtime_blocked(dev->parent))
+		return false;
+
+	idx = device_links_read_lock();
+
+	list_for_each_entry_rcu_locked(link, &dev->links.suppliers, c_node) {
+		if (!(link->flags & DL_FLAG_PM_RUNTIME))
+			continue;
+
+		if (!dev_pm_smart_suspend(link->supplier) &&
+		    !pm_runtime_blocked(link->supplier)) {
+			ret = false;
+			break;
+		}
+	}
+
+	device_links_read_unlock(idx);
+
+	return ret;
+}
+
 /**
  * device_prepare - Prepare a device for system power transition.
  * @dev: Device to handle.
@@ -1780,6 +1863,7 @@ int dpm_suspend(pm_message_t state)
 static int device_prepare(struct device *dev, pm_message_t state)
 {
 	int (*callback)(struct device *) = NULL;
+	bool smart_suspend;
 	int ret = 0;
 
 	/*
@@ -1789,6 +1873,13 @@ static int device_prepare(struct device *dev, pm_message_t state)
 	 * it again during the complete phase.
 	 */
 	pm_runtime_get_noresume(dev);
+	/*
+	 * If runtime PM is disabled for the device at this point and it has
+	 * never been enabled so far, it should not be enabled until this system
+	 * suspend-resume cycle is complete, so prepare to trigger a warning on
+	 * subsequent attempts to enable it.
+	 */
+	smart_suspend = !pm_runtime_block_if_disabled(dev);
 
 	if (dev->power.syscore)
 		return 0;
@@ -1823,6 +1914,13 @@ unlock:
 		pm_runtime_put(dev);
 		return ret;
 	}
+	/* Do not enable "smart suspend" for devices with disabled runtime PM. */
+	if (smart_suspend)
+		smart_suspend = device_prepare_smart_suspend(dev);
+
+	spin_lock_irq(&dev->power.lock);
+
+	dev->power.smart_suspend = smart_suspend;
 	/*
 	 * A positive return value from ->prepare() means "this device appears
 	 * to be runtime-suspended and its state is fine, so if it really is
@@ -1830,11 +1928,12 @@ unlock:
 	 * will do the same thing with all of its descendants".  This only
 	 * applies to suspend transitions, however.
 	 */
-	spin_lock_irq(&dev->power.lock);
 	dev->power.direct_complete = state.event == PM_EVENT_SUSPEND &&
 		(ret > 0 || dev->power.no_pm_callbacks) &&
 		!dev_pm_test_driver_flags(dev, DPM_FLAG_NO_DIRECT_COMPLETE);
+
 	spin_unlock_irq(&dev->power.lock);
+
 	return 0;
 }
 
@@ -1998,6 +2097,5 @@ void device_pm_check_callbacks(struct device *dev)
 
 bool dev_pm_skip_suspend(struct device *dev)
 {
-	return dev_pm_test_driver_flags(dev, DPM_FLAG_SMART_SUSPEND) &&
-		pm_runtime_status_suspended(dev);
+	return dev_pm_smart_suspend(dev) && pm_runtime_status_suspended(dev);
 }
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 2ee45841486b..c55a7c70bc1a 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -448,8 +448,19 @@ static int rpm_callback(int (*cb)(struct device *), struct device *dev)
 		retval = __rpm_callback(cb, dev);
 	}
 
-	dev->power.runtime_error = retval;
-	return retval != -EACCES ? retval : -EIO;
+	/*
+	 * Since -EACCES means that runtime PM is disabled for the given device,
+	 * it should not be returned by runtime PM callbacks.  If it is returned
+	 * nevertheless, assume it to be a transient error and convert it to
+	 * -EAGAIN.
+	 */
+	if (retval == -EACCES)
+		retval = -EAGAIN;
+
+	if (retval != -EAGAIN && retval != -EBUSY)
+		dev->power.runtime_error = retval;
+
+	return retval;
 }
 
 /**
@@ -725,21 +736,18 @@ static int rpm_suspend(struct device *dev, int rpmflags)
 	dev->power.deferred_resume = false;
 	wake_up_all(&dev->power.wait_queue);
 
-	if (retval == -EAGAIN || retval == -EBUSY) {
-		dev->power.runtime_error = 0;
+	/*
+	 * On transient errors, if the callback routine failed an autosuspend,
+	 * and if the last_busy time has been updated so that there is a new
+	 * autosuspend expiration time, automatically reschedule another
+	 * autosuspend.
+	 */
+	if (!dev->power.runtime_error && (rpmflags & RPM_AUTO) &&
+	    pm_runtime_autosuspend_expiration(dev) != 0)
+		goto repeat;
+
+	pm_runtime_cancel_pending(dev);
 
-		/*
-		 * If the callback routine failed an autosuspend, and
-		 * if the last_busy time has been updated so that there
-		 * is a new autosuspend expiration time, automatically
-		 * reschedule another autosuspend.
-		 */
-		if ((rpmflags & RPM_AUTO) &&
-		    pm_runtime_autosuspend_expiration(dev) != 0)
-			goto repeat;
-	} else {
-		pm_runtime_cancel_pending(dev);
-	}
 	goto out;
 }
 
@@ -1003,7 +1011,7 @@ static enum hrtimer_restart  pm_suspend_timer_fn(struct hrtimer *timer)
 	 * If 'expires' is after the current time, we've been called
 	 * too early.
 	 */
-	if (expires > 0 && expires < ktime_get_mono_fast_ns()) {
+	if (expires > 0 && expires <= ktime_get_mono_fast_ns()) {
 		dev->power.timer_expires = 0;
 		rpm_suspend(dev, dev->power.timer_autosuspends ?
 		    (RPM_ASYNC | RPM_AUTO) : RPM_ASYNC);
@@ -1460,20 +1468,31 @@ int pm_runtime_barrier(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(pm_runtime_barrier);
 
-/**
- * __pm_runtime_disable - Disable runtime PM of a device.
- * @dev: Device to handle.
- * @check_resume: If set, check if there's a resume request for the device.
- *
- * Increment power.disable_depth for the device and if it was zero previously,
- * cancel all pending runtime PM requests for the device and wait for all
- * operations in progress to complete.  The device can be either active or
- * suspended after its runtime PM has been disabled.
- *
- * If @check_resume is set and there's a resume request pending when
- * __pm_runtime_disable() is called and power.disable_depth is zero, the
- * function will wake up the device before disabling its runtime PM.
- */
+bool pm_runtime_block_if_disabled(struct device *dev)
+{
+	bool ret;
+
+	spin_lock_irq(&dev->power.lock);
+
+	ret = !pm_runtime_enabled(dev);
+	if (ret && dev->power.last_status == RPM_INVALID)
+		dev->power.last_status = RPM_BLOCKED;
+
+	spin_unlock_irq(&dev->power.lock);
+
+	return ret;
+}
+
+void pm_runtime_unblock(struct device *dev)
+{
+	spin_lock_irq(&dev->power.lock);
+
+	if (dev->power.last_status == RPM_BLOCKED)
+		dev->power.last_status = RPM_INVALID;
+
+	spin_unlock_irq(&dev->power.lock);
+}
+
 void __pm_runtime_disable(struct device *dev, bool check_resume)
 {
 	spin_lock_irq(&dev->power.lock);
@@ -1532,6 +1551,10 @@ void pm_runtime_enable(struct device *dev)
 	if (--dev->power.disable_depth > 0)
 		goto out;
 
+	if (dev->power.last_status == RPM_BLOCKED) {
+		dev_warn(dev, "Attempt to enable runtime PM when it is blocked\n");
+		dump_stack();
+	}
 	dev->power.last_status = RPM_INVALID;
 	dev->power.accounting_timestamp = ktime_get_mono_fast_ns();
 
@@ -1545,6 +1568,32 @@ out:
 }
 EXPORT_SYMBOL_GPL(pm_runtime_enable);
 
+static void pm_runtime_set_suspended_action(void *data)
+{
+	pm_runtime_set_suspended(data);
+}
+
+/**
+ * devm_pm_runtime_set_active_enabled - set_active version of devm_pm_runtime_enable.
+ *
+ * @dev: Device to handle.
+ */
+int devm_pm_runtime_set_active_enabled(struct device *dev)
+{
+	int err;
+
+	err = pm_runtime_set_active(dev);
+	if (err)
+		return err;
+
+	err = devm_add_action_or_reset(dev, pm_runtime_set_suspended_action, dev);
+	if (err)
+		return err;
+
+	return devm_pm_runtime_enable(dev);
+}
+EXPORT_SYMBOL_GPL(devm_pm_runtime_set_active_enabled);
+
 static void pm_runtime_disable_action(void *data)
 {
 	pm_runtime_dont_use_autosuspend(data);
@@ -1567,6 +1616,24 @@ int devm_pm_runtime_enable(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(devm_pm_runtime_enable);
 
+static void pm_runtime_put_noidle_action(void *data)
+{
+	pm_runtime_put_noidle(data);
+}
+
+/**
+ * devm_pm_runtime_get_noresume - devres-enabled version of pm_runtime_get_noresume.
+ *
+ * @dev: Device to handle.
+ */
+int devm_pm_runtime_get_noresume(struct device *dev)
+{
+	pm_runtime_get_noresume(dev);
+
+	return devm_add_action_or_reset(dev, pm_runtime_put_noidle_action, dev);
+}
+EXPORT_SYMBOL_GPL(devm_pm_runtime_get_noresume);
+
 /**
  * pm_runtime_forbid - Block runtime PM of a device.
  * @dev: Device to handle.
@@ -1764,8 +1831,8 @@ void pm_runtime_init(struct device *dev)
 	INIT_WORK(&dev->power.work, pm_runtime_work);
 
 	dev->power.timer_expires = 0;
-	hrtimer_init(&dev->power.suspend_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
-	dev->power.suspend_timer.function = pm_suspend_timer_fn;
+	hrtimer_setup(&dev->power.suspend_timer, pm_suspend_timer_fn, CLOCK_MONOTONIC,
+		      HRTIMER_MODE_ABS);
 
 	init_waitqueue_head(&dev->power.wait_queue);
 }
@@ -1874,7 +1941,7 @@ void pm_runtime_drop_link(struct device_link *link)
 	pm_request_idle(link->supplier);
 }
 
-static bool pm_runtime_need_not_resume(struct device *dev)
+bool pm_runtime_need_not_resume(struct device *dev)
 {
 	return atomic_read(&dev->power.usage_count) <= 1 &&
 		(atomic_read(&dev->power.child_count) == 0 ||
@@ -1959,7 +2026,7 @@ int pm_runtime_force_resume(struct device *dev)
 	int (*callback)(struct device *);
 	int ret = 0;
 
-	if (!pm_runtime_status_suspended(dev) || !dev->power.needs_force_resume)
+	if (!dev->power.needs_force_resume)
 		goto out;
 
 	/*
diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c
index f8163b559bf9..f84018125b46 100644
--- a/drivers/base/power/sysfs.c
+++ b/drivers/base/power/sysfs.c
@@ -6,7 +6,6 @@
 #include <linux/export.h>
 #include <linux/pm_qos.h>
 #include <linux/pm_runtime.h>
-#include <linux/pm_wakeup.h>
 #include <linux/atomic.h>
 #include <linux/jiffies.h>
 #include "power.h"
diff --git a/drivers/base/power/wakeirq.c b/drivers/base/power/wakeirq.c
index 5a5a9e978e85..8aa28c08b289 100644
--- a/drivers/base/power/wakeirq.c
+++ b/drivers/base/power/wakeirq.c
@@ -103,6 +103,32 @@ void dev_pm_clear_wake_irq(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(dev_pm_clear_wake_irq);
 
+static void devm_pm_clear_wake_irq(void *dev)
+{
+	dev_pm_clear_wake_irq(dev);
+}
+
+/**
+ * devm_pm_set_wake_irq - device-managed variant of dev_pm_set_wake_irq
+ * @dev: Device entry
+ * @irq: Device IO interrupt
+ *
+ *
+ * Attach a device IO interrupt as a wake IRQ, same with dev_pm_set_wake_irq,
+ * but the device will be auto clear wake capability on driver detach.
+ */
+int devm_pm_set_wake_irq(struct device *dev, int irq)
+{
+	int ret;
+
+	ret = dev_pm_set_wake_irq(dev, irq);
+	if (ret)
+		return ret;
+
+	return devm_add_action_or_reset(dev, devm_pm_clear_wake_irq, dev);
+}
+EXPORT_SYMBOL_GPL(devm_pm_set_wake_irq);
+
 /**
  * handle_threaded_wake_irq - Handler for dedicated wake-up interrupts
  * @irq: Device specific dedicated wake-up interrupt
diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
index 752b417e8129..63bf914a4d44 100644
--- a/drivers/base/power/wakeup.c
+++ b/drivers/base/power/wakeup.c
@@ -197,7 +197,7 @@ void wakeup_source_remove(struct wakeup_source *ws)
 	raw_spin_unlock_irqrestore(&events_lock, flags);
 	synchronize_srcu(&wakeup_srcu);
 
-	del_timer_sync(&ws->timer);
+	timer_delete_sync(&ws->timer);
 	/*
 	 * Clear timer.function to make wakeup_source_not_registered() treat
 	 * this wakeup source as not registered.
@@ -613,7 +613,7 @@ void __pm_stay_awake(struct wakeup_source *ws)
 	spin_lock_irqsave(&ws->lock, flags);
 
 	wakeup_source_report_event(ws, false);
-	del_timer(&ws->timer);
+	timer_delete(&ws->timer);
 	ws->timer_expires = 0;
 
 	spin_unlock_irqrestore(&ws->lock, flags);
@@ -693,7 +693,7 @@ static void wakeup_source_deactivate(struct wakeup_source *ws)
 		ws->max_time = duration;
 
 	ws->last_time = now;
-	del_timer(&ws->timer);
+	timer_delete(&ws->timer);
 	ws->timer_expires = 0;
 
 	if (ws->autosleep_enabled)