linux-kernel - [PATCH] hwmon: (raspberrypi) Exit immediately in case of error in init

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Message-Id: <20211211184449.18211-1-W_Armin@gmx.de>
Date:   Sat, 11 Dec 2021 19:44:49 +0100
From:   Armin Wolf <W_Armin@....de>
To:     jdelvare@...e.com, linux@...ck-us.net
Cc:     linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] hwmon: (raspberrypi) Exit immediately in case of error in init

Exit immediately if devm_hwmon_device_register_with_info()
fails since registering a delayed work whould be useless
in such a case anyway.

Signed-off-by: Armin Wolf <W_Armin@....de>
---
 drivers/hwmon/raspberrypi-hwmon.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/hwmon/raspberrypi-hwmon.c b/drivers/hwmon/raspberrypi-hwmon.c
index 573f53d52912..1650d3b4c26e 100644
--- a/drivers/hwmon/raspberrypi-hwmon.c
+++ b/drivers/hwmon/raspberrypi-hwmon.c
@@ -120,6 +120,8 @@ static int rpi_hwmon_probe(struct platform_device *pdev)
 							       data,
 							       &rpi_chip_info,
 							       NULL);
+	if (IS_ERR(data->hwmon_dev))
+		return PTR_ERR(data->hwmon_dev);

 	ret = devm_delayed_work_autocancel(dev, &data->get_values_poll_work,
 					   get_values_poll);
@@ -127,10 +129,9 @@ static int rpi_hwmon_probe(struct platform_device *pdev)
 		return ret;
 	platform_set_drvdata(pdev, data);

-	if (!PTR_ERR_OR_ZERO(data->hwmon_dev))
-		schedule_delayed_work(&data->get_values_poll_work, 2 * HZ);
+	schedule_delayed_work(&data->get_values_poll_work, 2 * HZ);

-	return PTR_ERR_OR_ZERO(data->hwmon_dev);
+	return 0;
 }

 static struct platform_driver rpi_hwmon_driver = {
--
2.30.2