linux-kernel - Re: [v3,1/1] hwmon: (nct7904) Fix the incorrect value of vsen_mask in nct7904

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Date:   Wed, 18 Sep 2019 06:40:56 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Amy.Shih@...antech.com.tw
Cc:     she90122@...il.com, oakley.ding@...antech.com.tw,
        bichan.lu@...antech.com.tw, Jean Delvare <jdelvare@...e.com>,
        linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [v3,1/1] hwmon: (nct7904) Fix the incorrect value of vsen_mask
 in nct7904_data struct.

On Wed, Sep 18, 2019 at 04:48:00PM +0800, Amy.Shih@...antech.com.tw wrote:
> From: "amy.shih" <amy.shih@...antech.com.tw>
> 
> Voltage sensors overlap with external temperature sensors. Detect
> the multi-function of voltage, thermal diode and thermistor from
> register VT_ADC_MD_REG to set value of vsen_mask in nct7904_data
> struct.
> 
> Signed-off-by: amy.shih <amy.shih@...antech.com.tw>

Applied.

Thanks,
Guenter

> ---
> Changes in v3:
> - Simplified the bit map.
> - Modified the if statement.
> Changes in v2:
> - Moved the if statement to outside.
> 
>  drivers/hwmon/nct7904.c | 11 +++++++----
>  1 file changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/hwmon/nct7904.c b/drivers/hwmon/nct7904.c
> index 95b447cfa24c..f62dd1882451 100644
> --- a/drivers/hwmon/nct7904.c
> +++ b/drivers/hwmon/nct7904.c
> @@ -915,12 +915,15 @@ static int nct7904_probe(struct i2c_client *client,
>  
>  	data->temp_mode = 0;
>  	for (i = 0; i < 4; i++) {
> -		val = (ret & (0x03 << i)) >> (i * 2);
> +		val = (ret >> (i * 2)) & 0x03;
>  		bit = (1 << i);
> -		if (val == 0)
> +		if (val == 0) {
>  			data->tcpu_mask &= ~bit;
> -		else if (val == 0x1 || val == 0x2)
> -			data->temp_mode |= bit;
> +		} else {
> +			if (val == 0x1 || val == 0x2)
> +				data->temp_mode |= bit;
> +			data->vsen_mask &= ~(0x06 << (i * 2));
> +		}
>  	}
>  
>  	/* PECI */