Re: [PATCH v6 2/3] platform: arm64: lenovo-thinkpad-t14s-ec: Add hwmon support for temperatures

[Krzysztof Kozlowski <krzk@kernel.org>]

On Tue, Jul 07, 2026 at 09:22:27PM +0200, Daniel Lezcano wrote:
> +static const struct hwmon_ops t14s_ec_hwmon_ops = {
> +	.is_visible = t14s_ec_hwmon_is_visible,
> +	.read = t14s_ec_hwmon_read,
> +	.read_string = t14s_ec_hwmon_read_string,
> +};
> +
> +static const struct hwmon_channel_info *t14s_ec_hwmon_info[] = {
> +	HWMON_CHANNEL_INFO(chip, HWMON_C_REGISTER_TZ),
> +	HWMON_CHANNEL_INFO(temp,
> +			   HWMON_T_INPUT | HWMON_T_LABEL,
> +			   HWMON_T_INPUT | HWMON_T_LABEL,
> +			   HWMON_T_INPUT | HWMON_T_LABEL,
> +			   HWMON_T_INPUT | HWMON_T_LABEL,
> +			   HWMON_T_INPUT | HWMON_T_LABEL,
> +			   HWMON_T_INPUT | HWMON_T_LABEL),
> +	NULL
> +};
> +
> +static const struct hwmon_chip_info t14s_ec_chip_info = {
> +	.ops = &t14s_ec_hwmon_ops,
> +	.info = t14s_ec_hwmon_info,
> +};
> +
> +static int t14s_ec_hwmon_probe(struct t14s_ec *ec)
> +{
> +	struct device *dev;
> +	struct t14s_ec_hwmon_sys_thermx sys_thermx[] = {
> +		{ .label = "soc",	.reg = T14S_EC_SYS_THERM0 },
> +		{ .label = "keyboard",	.reg = T14S_EC_SYS_THERM1 },
> +		{ .label = "base",	.reg = T14S_EC_SYS_THERM2 },
> +		{ .label = "charging",	.reg = T14S_EC_SYS_THERM3 },
> +		{ .label = "qtm",	.reg = T14S_EC_SYS_THERM6 },
> +		{ .label = "ssd",	.reg = T14S_EC_SYS_THERM7 },
> +	};
> +
> +	ec->ec_hwmon.sys_thermx = devm_kmemdup_array(ec->dev, sys_thermx,
> +						     ARRAY_SIZE(sys_thermx),
> +						     sizeof(sys_thermx[0]), GFP_KERNEL);
> +	if (!ec->ec_hwmon.sys_thermx)
> +		return -ENOMEM;
> +
> +	dev = devm_hwmon_device_register_with_info(ec->dev, "t14s_ec", ec,
> +						   &t14s_ec_chip_info, NULL);

Last time I commented this looks like actual ABI break. You did not respond to
that, so I assume my finding was right, thus:
1. binding is not correct (although driver should be fixed, not binding)
2. the code still breaks users

Best regards,
Krzysztof