[PATCH v4 06/13] platform/x86: bitland-mifs-wmi: use devm_blocking_notifier_chain_register()

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

Signed-off-by: Eliav Farber <[email protected]>
---
 drivers/platform/x86/bitland-mifs-wmi.c | 17 +++--------------
 1 file changed, 3 insertions(+), 14 deletions(-)

diff --git a/drivers/platform/x86/bitland-mifs-wmi.c b/drivers/platform/x86/bitland-mifs-wmi.c
index 3a373184519d..2bcd4f692a74 100644
--- a/drivers/platform/x86/bitland-mifs-wmi.c
+++ b/drivers/platform/x86/bitland-mifs-wmi.c
@@ -623,13 +623,6 @@ static const struct key_entry bitland_mifs_wmi_keymap[] = {
 	{ KE_END, 0 }
 };
 
-static void bitland_notifier_unregister(void *data)
-{
-	struct notifier_block *nb = data;
-
-	blocking_notifier_chain_unregister(&bitland_notifier_list, nb);
-}
-
 static int bitland_notifier_callback(struct notifier_block *nb,
 				     unsigned long action, void *data)
 {
@@ -729,13 +722,9 @@ static int bitland_mifs_wmi_probe(struct wmi_device *wdev, const void *context)
 		return ret;
 
 	drv_data->notifier.notifier_call = bitland_notifier_callback;
-	ret = blocking_notifier_chain_register(&bitland_notifier_list, &drv_data->notifier);
-	if (ret)
-		return ret;
-
-	return devm_add_action_or_reset(&wdev->dev,
-				       bitland_notifier_unregister,
-				       &drv_data->notifier);
+	return devm_blocking_notifier_chain_register(&wdev->dev,
+						     &bitland_notifier_list,
+						     &drv_data->notifier);
 }
 
 static void bitland_mifs_wmi_notify(struct wmi_device *wdev,
-- 
2.47.3