linux-kernel - [PATCH v2] android: Remove error checking for debugfs_create

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Message-Id: <20230713080649.1893-1-machel@vivo.com>
Date:   Thu, 13 Jul 2023 16:06:37 +0800
From:   Wang Ming <machel@...o.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arve Hjønnevåg <arve@...roid.com>,
        Todd Kjos <tkjos@...roid.com>,
        Martijn Coenen <maco@...roid.com>,
        Joel Fernandes <joel@...lfernandes.org>,
        Christian Brauner <brauner@...nel.org>,
        Carlos Llamas <cmllamas@...gle.com>,
        Suren Baghdasaryan <surenb@...gle.com>,
        linux-kernel@...r.kernel.org
Cc:     opensource.kernel@...o.com, Wang Ming <machel@...o.com>
Subject: [PATCH v2]  android: Remove error checking for debugfs_create_dir()

It is expected that most callers should _ignore_ the errors
return by debugfs_create_dir() in binder_init().

Signed-off-by: Wang Ming <machel@...o.com>
---
 drivers/android/binder.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index 486c8271cab7..49d84a6c4594 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -6557,6 +6557,7 @@ static int __init binder_init(void)
 	struct binder_device *device;
 	struct hlist_node *tmp;
 	char *device_names = NULL;
+	const struct binder_debugfs_entry *db_entry;
 
 	ret = binder_alloc_shrinker_init();
 	if (ret)
@@ -6566,19 +6567,16 @@ static int __init binder_init(void)
 	atomic_set(&binder_transaction_log_failed.cur, ~0U);
 
 	binder_debugfs_dir_entry_root = debugfs_create_dir("binder", NULL);
-	if (binder_debugfs_dir_entry_root) {
-		const struct binder_debugfs_entry *db_entry;
 
-		binder_for_each_debugfs_entry(db_entry)
-			debugfs_create_file(db_entry->name,
-					    db_entry->mode,
-					    binder_debugfs_dir_entry_root,
-					    db_entry->data,
-					    db_entry->fops);
+	binder_for_each_debugfs_entry(db_entry)
+		debugfs_create_file(db_entry->name,
+					db_entry->mode,
+					binder_debugfs_dir_entry_root,
+					db_entry->data,
+					db_entry->fops);
 
-		binder_debugfs_dir_entry_proc = debugfs_create_dir("proc",
-						 binder_debugfs_dir_entry_root);
-	}
+	binder_debugfs_dir_entry_proc = debugfs_create_dir("proc",
+						binder_debugfs_dir_entry_root);
 
 	if (!IS_ENABLED(CONFIG_ANDROID_BINDERFS) &&
 	    strcmp(binder_devices_param, "") != 0) {
-- 
2.25.1