From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date: Thu, 17 Jul 2025 17:55:25 +0000 (+0200)
Subject: Merge back earlier material related to system sleep
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c1f7c22e69fae209eaad58de2627b8b5acb3cb3;p=thirdparty%2Flinux.git

Merge back earlier material related to system sleep
---

7c1f7c22e69fae209eaad58de2627b8b5acb3cb3
diff --cc drivers/base/power/main.c
index 7a50af416cac8,215c147eed040..5d9b3dc9011dc
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@@ -1278,24 -1301,28 +1301,44 @@@ static bool dpm_async_suspend_parent(st
  	/* Start processing the device's parent if it is "async". */
  	if (dev->parent)
  		dpm_async_with_cleanup(dev->parent, func);
+ 
+ 	return true;
+ }
+ 
+ static void dpm_async_suspend_superior(struct device *dev, async_func_t func)
+ {
+ 	struct device_link *link;
+ 	int idx;
+ 
+ 	if (!dpm_async_suspend_parent(dev, func))
+ 		return;
+ 
+ 	idx = device_links_read_lock();
+ 
+ 	/* Start processing the device's "async" suppliers. */
+ 	list_for_each_entry_rcu(link, &dev->links.suppliers, c_node)
+ 		if (READ_ONCE(link->status) != DL_STATE_DORMANT)
+ 			dpm_async_with_cleanup(link->supplier, func);
+ 
+ 	device_links_read_unlock(idx);
  }
  
 +static void dpm_async_suspend_complete_all(struct list_head *device_list)
 +{
 +	struct device *dev;
 +
 +	guard(mutex)(&async_wip_mtx);
 +
 +	list_for_each_entry_reverse(dev, device_list, power.entry) {
 +		/*
 +		 * In case the device is being waited for and async processing
 +		 * has not started for it yet, let the waiters make progress.
 +		 */
 +		if (!dev->power.work_in_progress)
 +			complete_all(&dev->power.completion);
 +	}
 +}
 +
  /**
   * resume_event - Return a "resume" message for given "suspend" sleep state.
   * @sleep_state: PM message representing a sleep state.