Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Atul Kumar Pant <atulpant.linux@gmail.com>
To:     peterz@infradead.org, mingo@redhat.com, will@kernel.org,
        longman@redhat.com, boqun.feng@gmail.com
Cc:     Atul Kumar Pant <atulpant.linux@gmail.com>, shuah@kernel.org,
        linux-kernel-mentees@lists.linuxfoundation.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH v2] kernel: locking: Updates return value check
Date:   Mon,  7 Aug 2023 17:48:34 +0530
Message-Id: <20230807121834.7438-1-atulpant.linux@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Updating the check of return value from debugfs_create_file
and debugfs_create_dir to use IS_ERR.

Signed-off-by: Atul Kumar Pant <atulpant.linux@gmail.com>
Acked-by: Waiman Long <longman@redhat.com>
---

changes since v1:
    Adding linux-kernel@vger.kernel.org mailing list and retaining
    Acked-by tag from Waiman Long

 kernel/locking/lock_events.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/kernel/locking/lock_events.c b/kernel/locking/lock_events.c
index fa2c2f951c6b..e68d82099558 100644
--- a/kernel/locking/lock_events.c
+++ b/kernel/locking/lock_events.c
@@ -146,7 +146,7 @@ static int __init init_lockevent_counts(void)
 	struct dentry *d_counts = debugfs_create_dir(LOCK_EVENTS_DIR, NULL);
 	int i;
 
-	if (!d_counts)
+	if (IS_ERR(d_counts))
 		goto out;
 
 	/*
@@ -159,14 +159,14 @@ static int __init init_lockevent_counts(void)
 	for (i = 0; i < lockevent_num; i++) {
 		if (skip_lockevent(lockevent_names[i]))
 			continue;
-		if (!debugfs_create_file(lockevent_names[i], 0400, d_counts,
-					 (void *)(long)i, &fops_lockevent))
+		if (IS_ERR(debugfs_create_file(lockevent_names[i], 0400, d_counts,
+					 (void *)(long)i, &fops_lockevent)))
 			goto fail_undo;
 	}
 
-	if (!debugfs_create_file(lockevent_names[LOCKEVENT_reset_cnts], 0200,
+	if (IS_ERR(debugfs_create_file(lockevent_names[LOCKEVENT_reset_cnts], 0200,
 				 d_counts, (void *)(long)LOCKEVENT_reset_cnts,
-				 &fops_lockevent))
+				 &fops_lockevent)))
 		goto fail_undo;
 
 	return 0;
-- 
2.25.1