[PATCH v4 12/13] gpio: gpiolib-kunit: use devm_blocking_notifier_chain_register()

[Eliav Farber <farbere@amazon.com>]

Replace the blocking_notifier_chain_register() +
devm_add_action_or_reset() pattern with a single call to
devm_blocking_notifier_chain_register(), removing the
gpio_unbind_unregister_notifier() callback.

Signed-off-by: Eliav Farber <farbere@amazon.com>
---
 drivers/gpio/gpiolib-kunit.c | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/drivers/gpio/gpiolib-kunit.c b/drivers/gpio/gpiolib-kunit.c
index 380b68f879e5..8ce9acc89e29 100644
--- a/drivers/gpio/gpiolib-kunit.c
+++ b/drivers/gpio/gpiolib-kunit.c
@@ -237,13 +237,6 @@ static int gpio_unbind_notify(struct notifier_block *nb, unsigned long action,
 	return NOTIFY_OK;
 }
 
-static void gpio_unbind_unregister_notifier(void *data)
-{
-	struct notifier_block *nb = data;
-
-	blocking_notifier_chain_unregister(&gpio_unbind_notifier, nb);
-}
-
 static int gpio_unbind_consumer_probe(struct platform_device *pdev)
 {
 	struct gpio_unbind_consumer_drvdata *data;
@@ -261,11 +254,8 @@ static int gpio_unbind_consumer_probe(struct platform_device *pdev)
 		return PTR_ERR(data->desc);
 
 	data->nb.notifier_call = gpio_unbind_notify;
-	ret = blocking_notifier_chain_register(&gpio_unbind_notifier, &data->nb);
-	if (ret)
-		return ret;
-
-	ret = devm_add_action_or_reset(dev, gpio_unbind_unregister_notifier, &data->nb);
+	ret = devm_blocking_notifier_chain_register(dev, &gpio_unbind_notifier,
+						    &data->nb);
 	if (ret)
 		return ret;
 
-- 
2.47.3