linux-kernel - Re: [PATCH] hwmon: occ: Fix power sensor indexing

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Date:   Wed, 20 Mar 2019 06:29:30 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Eddie James <eajames@...ux.ibm.com>
Cc:     linux-hwmon@...r.kernel.org, jdelvare@...e.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] hwmon: occ: Fix power sensor indexing

On Tue, Mar 19, 2019 at 04:01:58PM -0500, Eddie James wrote:
> In the case of power sensor version 0xA0, the sensor indexing overlapped
> with the "caps" power sensors, resulting in probe failure and kernel
> warnings. Fix this by specifying the next index for each power sensor
> version.
> 
> Fixes: 54076cb ("hwmon (occ): Add sensor attributes and register ...")
> Signed-off-by: Eddie James <eajames@...ux.ibm.com>
> Tested-by: Joel Stanley <joel@....id.au>

Applied.

Side note: There is no v4.21.

Thanks,
Guenter

> ---
>  drivers/hwmon/occ/common.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/hwmon/occ/common.c b/drivers/hwmon/occ/common.c
> index 391118c..c888f4a 100644
> --- a/drivers/hwmon/occ/common.c
> +++ b/drivers/hwmon/occ/common.c
> @@ -889,6 +889,8 @@ static int occ_setup_sensor_attrs(struct occ *occ)
>  				s++;
>  			}
>  		}
> +
> +		s = (sensors->power.num_sensors * 4) + 1;
>  	} else {
>  		for (i = 0; i < sensors->power.num_sensors; ++i) {
>  			s = i + 1;
> @@ -917,11 +919,11 @@ static int occ_setup_sensor_attrs(struct occ *occ)
>  						     show_power, NULL, 3, i);
>  			attr++;
>  		}
> -	}
>  
> -	if (sensors->caps.num_sensors >= 1) {
>  		s = sensors->power.num_sensors + 1;
> +	}
>  
> +	if (sensors->caps.num_sensors >= 1) {
>  		snprintf(attr->name, sizeof(attr->name), "power%d_label", s);
>  		attr->sensor = OCC_INIT_ATTR(attr->name, 0444, show_caps, NULL,
>  					     0, 0);