From: Alexander Stein <alexander.stein@ew.tq-group.com>
To: Jean Delvare <jdelvare@suse.com>, Guenter Roeck <linux@roeck-us.net>
Cc: Alexander Stein <alexander.stein@ew.tq-group.com>,
linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 1/1] hwmon: (iio_hwmon) use dev_err_probe
Date: Tue, 31 Jan 2023 11:33:59 +0100 [thread overview]
Message-ID: <20230131103359.625081-1-alexander.stein@ew.tq-group.com> (raw)
Instead of just returning an error code, add an error message as well.
While at it, simplify the code and use a common return path.
Upon deferral this also nicely lists the following message in
/sys/kernel/debug/devices_deferred:
adc iio_hwmon: Failed to get channels
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
---
drivers/hwmon/iio_hwmon.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/hwmon/iio_hwmon.c b/drivers/hwmon/iio_hwmon.c
index 3aa40893fc09..4c8a80847891 100644
--- a/drivers/hwmon/iio_hwmon.c
+++ b/drivers/hwmon/iio_hwmon.c
@@ -77,9 +77,11 @@ static int iio_hwmon_probe(struct platform_device *pdev)
channels = devm_iio_channel_get_all(dev);
if (IS_ERR(channels)) {
- if (PTR_ERR(channels) == -ENODEV)
- return -EPROBE_DEFER;
- return PTR_ERR(channels);
+ ret = PTR_ERR(channels);
+ if (ret == -ENODEV)
+ ret = -EPROBE_DEFER;
+ return dev_err_probe(dev, ret,
+ "Failed to get channels\n");
}
st = devm_kzalloc(dev, sizeof(*st), GFP_KERNEL);
--
2.34.1
next reply other threads:[~2023-01-31 10:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-31 10:33 Alexander Stein [this message]
2023-01-31 15:05 ` [PATCH 1/1] hwmon: (iio_hwmon) use dev_err_probe Guenter Roeck
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