linux-kernel - [PATCH v2] drivers:block:Use IS_ERR() to check debugfs_create

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Message-Id: <20240822132358.2416027-1-11162571@vivo.com>
Date: Thu, 22 Aug 2024 21:23:58 +0800
From: Yang Ruibin <11162571@...o.com>
To: Tony Luck <tony.luck@...el.com>,
	Borislav Petkov <bp@...en8.de>,
	Andy Whitcroft <apw@...onical.com>,
	Joe Perches <joe@...ches.com>,
	Dwaipayan Ray <dwaipayanray1@...il.com>,
	Lukas Bulwahn <lukas.bulwahn@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	linux-edac@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: opensource.kernel@...o.com,
	Yang Ruibin <11162571@...o.com>
Subject: [PATCH v2] drivers:block:Use IS_ERR() to check debugfs_create_dir() return value

The debugfs_create_dir() function returns error pointers.It
never returns NULL. So use IS_ERR() to check its return value.

Fixes: 011d82611172 ("RAS: Add a Corrected Errors Collector")
Signed-off-by: Yang Ruibin <11162571@...o.com>
---
 drivers/ras/cec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ras/cec.c b/drivers/ras/cec.c
index e440b15fbabc..ebd4631b685b 100644
--- a/drivers/ras/cec.c
+++ b/drivers/ras/cec.c
@@ -489,7 +489,7 @@ static int __init create_debugfs_nodes(void)
 	}
 
 	d = debugfs_create_dir("cec", dfs);
-	if (!d) {
+	if (IS_ERR(d)) {
 		pr_warn("Error creating cec debugfs node!\n");
 		return -1;
 	}
-- 
2.34.1