linux-kernel - [PATCH 1/2] hwmon: Fix wrong return errno in *sanitize

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Message-Id: <20251219-hwmon-fixes-v1-1-21b29097ea3b@gmail.com>
Date: Fri, 19 Dec 2025 17:48:14 +0200
From: Kari Argillander <kari.argillander@...il.com>
To: Kari Argillander <kari.argillander@...il.com>, 
 Guenter Roeck <linux@...ck-us.net>
Cc: linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] hwmon: Fix wrong return errno in *sanitize_name()

Currently if user of *sanitize_name() function gives nullptr for name
they get's ENOMEM. Logically it should be EINVAL.

Signed-off-by: Kari Argillander <kari.argillander@...il.com>
---
 drivers/hwmon/hwmon.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c
index 0b4bdcd33c7b..7a784d685d77 100644
--- a/drivers/hwmon/hwmon.c
+++ b/drivers/hwmon/hwmon.c
@@ -1260,6 +1260,9 @@ static char *__hwmon_sanitize_name(struct device *dev, const char *old_name)
  */
 char *hwmon_sanitize_name(const char *name)
 {
+	if (!name)
+		return ERR_PTR(-EINVAL);
+
 	return __hwmon_sanitize_name(NULL, name);
 }
 EXPORT_SYMBOL_GPL(hwmon_sanitize_name);
@@ -1276,7 +1279,7 @@ EXPORT_SYMBOL_GPL(hwmon_sanitize_name);
  */
 char *devm_hwmon_sanitize_name(struct device *dev, const char *name)
 {
-	if (!dev)
+	if (!dev || !name)
 		return ERR_PTR(-EINVAL);
 
 	return __hwmon_sanitize_name(dev, name);

-- 
2.43.0