linux-kernel - Re: [PATCH] thermal/drivers/generic-adc: Register thermal zones as hwmon sensors

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Message-ID: <3a840fbf-8250-9870-3caa-3e12c468aa24@linaro.org>
Date:   Tue, 13 Jun 2023 11:44:02 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Chen-Yu Tsai <wenst@...omium.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Subject: Re: [PATCH] thermal/drivers/generic-adc: Register thermal zones as
 hwmon sensors

On 13/06/2023 11:30, Chen-Yu Tsai wrote:
> Register thermal zones as hwmon sensors to let userspace read
> temperatures using standard hwmon interface.
> 
> Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
> ---
>   drivers/thermal/thermal-generic-adc.c | 8 ++++++++
>   1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/thermal/thermal-generic-adc.c b/drivers/thermal/thermal-generic-adc.c
> index 017b0ce52122..e95dc354f192 100644
> --- a/drivers/thermal/thermal-generic-adc.c
> +++ b/drivers/thermal/thermal-generic-adc.c
> @@ -13,6 +13,8 @@
>   #include <linux/slab.h>
>   #include <linux/thermal.h>
>   
> +#include "thermal_hwmon.h"
> +
>   struct gadc_thermal_info {
>   	struct device *dev;
>   	struct thermal_zone_device *tz_dev;
> @@ -153,6 +155,12 @@ static int gadc_thermal_probe(struct platform_device *pdev)
>   		return ret;
>   	}
>   
> +	ret = devm_thermal_add_hwmon_sysfs(&pdev->dev, gti->tz_dev);
> +	if (ret) {
> +		dev_err(&pdev->dev, "Failed to add hwmon sysfs attributes\n");
> +		return ret;
> +	}

Usually, if the hwmon registering fails this is not fatal.

> +
>   	return 0;
>   }
>   

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