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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2021-05-17 15:29:45 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-15 18:14:36 +0300 |
| commit | a7f1d03b6046cf44f1dd702aeaad3b5e4d7b33a5 (patch) | |
| tree | b8424089754650db68bf8f4e6bd9944d7865b815 | |
| parent | c3cd0ff7aa18a60229134fb8e467d5e1d92abec3 (diff) | |
| download | linux-a7f1d03b6046cf44f1dd702aeaad3b5e4d7b33a5.tar.xz | |
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>
| -rw-r--r-- | drivers/base/devres.c | 4 |
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); |