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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2021-05-17 15:29:45 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-06-15 17:14:36 +0200
commita7f1d03b6046cf44f1dd702aeaad3b5e4d7b33a5 (patch)
treeb8424089754650db68bf8f4e6bd9944d7865b815 /drivers/base
parentc3cd0ff7aa18a60229134fb8e467d5e1d92abec3 (diff)
downloadlinux-a7f1d03b6046cf44f1dd702aeaad3b5e4d7b33a5.tar.bz2
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: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210517122946.53161-3-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/devres.c4
1 files changed, 4 insertions, 0 deletions
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);