linux-kernel - [PATCH] hwmon: nzxt: Fix some error handling path in kraken2

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Message-Id: <a768e69851a07a1f4e29f270f4e2559063f07343.1701617030.git.christophe.jaillet@wanadoo.fr>
Date:   Sun,  3 Dec 2023 16:24:05 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Jonas Malaco <jonas@...tocubo.io>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Aleksa Savic <savicaleksa83@...il.com>,
        linux-hwmon@...r.kernel.org
Subject: [PATCH] hwmon: nzxt: Fix some error handling path in kraken2_probe()

There is no point in calling hid_hw_stop() if hid_hw_start() has failed.
There is no point in calling hid_hw_close() if hid_hw_open() has failed.

Update the error handling path accordingly.

Fixes: 82e3430dfa8c ("hwmon: add driver for NZXT Kraken X42/X52/X62/X72")
Reported-by: Aleksa Savic <savicaleksa83@...il.com>
Closes: https://lore.kernel.org/all/121470f0-6c1f-418a-844c-7ec2e8a54b8e@gmail.com/
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
Closes added to please checkpatch, not sure if relevant here.
---
 drivers/hwmon/nzxt-kraken2.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hwmon/nzxt-kraken2.c b/drivers/hwmon/nzxt-kraken2.c
index 428c77b5fce5..7caf387eb144 100644
--- a/drivers/hwmon/nzxt-kraken2.c
+++ b/drivers/hwmon/nzxt-kraken2.c
@@ -161,13 +161,13 @@ static int kraken2_probe(struct hid_device *hdev,
 	ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
 	if (ret) {
 		hid_err(hdev, "hid hw start failed with %d\n", ret);
-		goto fail_and_stop;
+		return ret;
 	}
 
 	ret = hid_hw_open(hdev);
 	if (ret) {
 		hid_err(hdev, "hid hw open failed with %d\n", ret);
-		goto fail_and_close;
+		goto fail_and_stop;
 	}
 
 	priv->hwmon_dev = hwmon_device_register_with_info(&hdev->dev, "kraken2",
-- 
2.34.1