From:   Armin Wolf <W_Armin@gmx.de>
To:     pali@kernel.org
Cc:     jdelvare@suse.com, linux@roeck-us.net, linux-hwmon@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH] hwmon: (dell-smm) Fix warning on /proc/i8k creation error
Date:   Fri, 12 Nov 2021 18:14:40 +0100
Message-Id: <20211112171440.59006-1-W_Armin@gmx.de>
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable
Precedence: bulk

The removal function is called regardless of whether
/proc/i8k was created successfully or not, the later
causing a WARN() on module removal.
Fix that by only registering the removal function
if /proc/i8k was created successfully.

Tested on a Inspiron 3505.

Fixes: 039ae58503f3 ("hwmon: Allow to compile dell-smm-hwmon driver withou=
t /proc/i8k")
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
=2D--
 drivers/hwmon/dell-smm-hwmon.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon=
.c
index eaace478f508..5596c211f38d 100644
=2D-- a/drivers/hwmon/dell-smm-hwmon.c
+++ b/drivers/hwmon/dell-smm-hwmon.c
@@ -627,10 +627,9 @@ static void __init i8k_init_procfs(struct device *dev=
)
 {
 	struct dell_smm_data *data =3D dev_get_drvdata(dev);

-	/* Register the proc entry */
-	proc_create_data("i8k", 0, NULL, &i8k_proc_ops, data);
-
-	devm_add_action_or_reset(dev, i8k_exit_procfs, NULL);
+	/* Only register exit function if creation was successful */
+	if (proc_create_data("i8k", 0, NULL, &i8k_proc_ops, data))
+		devm_add_action_or_reset(dev, i8k_exit_procfs, NULL);
 }

 #else
=2D-
2.30.2