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Date:	Wed, 22 Oct 2014 21:37:23 -0700
From:	Florian Fainelli <f.fainelli@...il.com>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	netdev <netdev@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Andrew Lunn <andrew@...n.ch>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 06/14] net: dsa: Add support for hardware monitoring

2014-10-22 21:03 GMT-07:00 Guenter Roeck <linux@...ck-us.net>:
> Some Marvell switches provide chip temperature data.
> Add support for reporting it to the dsa infrastructure.
>
> Signed-off-by: Guenter Roeck <linux@...ck-us.net>
> ---
[snip]

> +/* hwmon support ************************************************************/
> +
> +#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))

IS_ENABLED(CONFIG_HWMON)?

> +
> +static ssize_t temp1_input_show(struct device *dev,
> +                               struct device_attribute *attr, char *buf)
> +{
> +       struct dsa_switch *ds = dev_get_drvdata(dev);
> +       int temp, ret;
> +
> +       ret = ds->drv->get_temp(ds, &temp);
> +       if (ret < 0)
> +               return ret;
> +
> +       return sprintf(buf, "%d\n", temp * 1000);
> +}
> +static DEVICE_ATTR_RO(temp1_input);

You probably want the number of temperature sensors to come from the
switch driver, and support arbitrary number of temperature sensors?
--
Florian
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