[PATCH v3 3/4] devres: No need to call remove_nodes() when there none present

[Andy Shevchenko]

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

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
v3: new patch
 drivers/base/devres.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/base/devres.c b/drivers/base/devres.c
index db1f3137fc81..dee48858663f 100644
--- a/drivers/base/devres.c
+++ b/drivers/base/devres.c
@@ -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);
-- 
2.30.2