driver core: Skip unnecessary work when device doesn't have sync_state() (77036165) · Commits · 戴 / test

A bunch of busy work is done for devices that don't have sync_state() support. Stop doing the busy work. Signed-off-by:

drivers/base/core.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -718,6 +718,8 @@ static void __device_links_queue_sync_state(struct device *dev,
		{
		struct device_link *link;

		if (!dev_has_sync_state(dev))
		return;
		if (dev->state_synced)
		return;

		@@ -819,7 +821,7 @@ late_initcall(sync_state_resume_initcall);

		static void __device_links_supplier_defer_sync(struct device *sup)
		{
		if (list_empty(&sup->links.defer_sync))
		if (list_empty(&sup->links.defer_sync) && dev_has_sync_state(sup))
		list_add_tail(&sup->links.defer_sync, &deferred_sync);
		}