class: use IS_ERR_OR_NULL() helper in class_unregister()

Use IS_ERR_OR_NULL() helper in class_unregister() to simplify code.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220822061922.3884113-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/base/class.c b/drivers/base/class.c
index 8feb85e..64f7b9a 100644 (file)
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -260,7 +260,7 @@ EXPORT_SYMBOL_GPL(__class_create);
  */
 void class_destroy(struct class *cls)
 {
-       if ((cls == NULL) || (IS_ERR(cls)))
+       if (IS_ERR_OR_NULL(cls))
                return;
 
        class_unregister(cls);