Commit a7f1d03b authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Greg Kroah-Hartman
Browse files

devres: No need to call remove_nodes() when there none present 



If a list of devres nodes is empty, no need to call remove_nodes().

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210517122946.53161-3-andriy.shevchenko@linux.intel.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c3cd0ff7

drivers/base/devres.c

+4 −0
Original line number Diff line number Diff line
@@ -526,6 +526,10 @@ int devres_release_all(struct device *dev) 
	if (WARN_ON(dev->devres_head.next == NULL))

		return -ENODEV;



	/* Nothing to release if list is empty */

	if (list_empty(&dev->devres_head))

		return 0;



	spin_lock_irqsave(&dev->devres_lock, flags);

	cnt = remove_nodes(dev, dev->devres_head.next, &dev->devres_head, &todo);

	spin_unlock_irqrestore(&dev->devres_lock, flags);