From:   Qi Zheng <zhengqi.arch@bytedance.com>
To:     vireshk@kernel.org, nm@ti.com, sboyd@kernel.org,
        gregkh@linuxfoundation.org
Cc:     linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
        Qi Zheng <zhengqi.arch@bytedance.com>
Subject: [PATCH RESEND] PM/OPP: fix error checking in opp_migrate_dentry()
Date:   Wed,  8 Feb 2023 12:00:37 +0800
Message-Id: <20230208040037.60305-1-zhengqi.arch@bytedance.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Since commit ff9fb72bc077 ("debugfs: return error values,
not NULL") changed return value of debugfs_rename() in
error cases from %NULL to %ERR_PTR(-ERROR), we should
also check error values instead of NULL.

Fixes: ff9fb72bc077 ("debugfs: return error values, not NULL")
Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
---
Resend as a separate patch.

 drivers/opp/debugfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/opp/debugfs.c b/drivers/opp/debugfs.c
index 96a30a032c5f..2c7fb683441e 100644
--- a/drivers/opp/debugfs.c
+++ b/drivers/opp/debugfs.c
@@ -235,7 +235,7 @@ static void opp_migrate_dentry(struct opp_device *opp_dev,
 
 	dentry = debugfs_rename(rootdir, opp_dev->dentry, rootdir,
 				opp_table->dentry_name);
-	if (!dentry) {
+	if (IS_ERR(dentry)) {
 		dev_err(dev, "%s: Failed to rename link from: %s to %s\n",
 			__func__, dev_name(opp_dev->dev), dev_name(dev));
 		return;
-- 
2.20.1