Re: [PATCH net-next] eth: fbnic: Add hardware monitoring support

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On 9/13/24 06:28, Andrew Lunn wrote:
+static int fbnic_hwmon_sensor_id(enum hwmon_sensor_types type)
+{
+	if (type == hwmon_temp)
+		return FBNIC_SENSOR_TEMP;
+	if (type == hwmon_in)
+		return FBNIC_SENSOR_VOLTAGE;
+
+	return -EOPNOTSUPP;
+}

+static int fbnic_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
+			    u32 attr, int channel, long *val)
+{
+	struct fbnic_dev *fbd = dev_get_drvdata(dev);
+	const struct fbnic_mac *mac = fbd->mac;
+	int id;
+
+	id = fbnic_hwmon_sensor_id(type);
+	if (id < 0)
+		return -EOPNOTSUPP;

fbnic_hwmon_sensor_id() itself returns EOPNOTSUPP, so just use it.

+void fbnic_hwmon_register(struct fbnic_dev *fbd)
+{
+	if (!IS_REACHABLE(CONFIG_HWMON))
+		return;
+
+	fbd->hwmon = hwmon_device_register_with_info(fbd->dev, "fbnic",
+						     fbd, &fbnic_chip_info,
+						     NULL);
+	if (IS_ERR(fbd->hwmon)) {
+		dev_err(fbd->dev,
+			"Cannot register hwmon device %pe, aborting\n",
+			fbd->hwmon);

aborting is probably the wrong word, because you keep going
independent of it working or not.


I have not seen the original patch, and it doesn't seem to be available
on the networking mailing list, so I can not really comment on the patch
as a whole. For hwmon drivers in drivers/hwmon, I don't accept patches
with dev_err() which is then ignored ... because ignoring the error
means that it is not really an error. This should be dev_warn()
or better dev_notice().

Guenter







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