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hwmon: (tmp421) Check error when loading label from dt

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Add error checking when loading temperature channel label defined
in device tree. Handling of error from of_property_read_string()
is inspired by lm90 driver and therefor contain same error string.

Signed-off-by: Bruno Thomsen <bruno.thomsen@gmail.com>
Link: https://lore.kernel.org/r/20251111144406.7489-1-bruno.thomsen@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Bruno Thomsen 2025-11-11 15:44:05 +01:00 committed by Guenter Roeck
parent 71a117d28f
commit 638196d43b
1 changed files with 5 additions and 1 deletions
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6
drivers/hwmon/tmp421.c
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@ -369,7 +369,11 @@ static int tmp421_probe_child_from_dt(struct i2c_client *client,
return -EINVAL;
}
of_property_read_string(child, "label", &data->channel[i].label);
err = of_property_read_string(child, "label", &data->channel[i].label);
if (err == -ENODATA || err == -EILSEQ) {
dev_err(dev, "invalid label property in %pOFn\n", child);
return err;
}
if (data->channel[i].label)
data->temp_config[i] |= HWMON_T_LABEL;