linux-kernel - Re: [PATCH] pinctrl: qcom: spmi-gpio: Assign boolean values to a bool variable

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Date:   Wed, 20 Jan 2021 21:19:13 -0600
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Jiapeng Zhong <abaci-bugfix@...ux.alibaba.com>
Cc:     agross@...nel.org, linus.walleij@...aro.org,
        linux-arm-msm@...r.kernel.org, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pinctrl: qcom: spmi-gpio: Assign boolean values to a
 bool variable

On Wed 20 Jan 01:29 CST 2021, Jiapeng Zhong wrote:

> Fix the following coccicheck warnings:
> 
> ./drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c:340:3-15: WARNING:
> Assignment of 0/1 to bool variable.
> 
> Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
> Signed-off-by: Jiapeng Zhong <abaci-bugfix@...ux.alibaba.com>

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>

Although we're mixing bool/int on line 417 and 637 as well, with:

	val |= pin->disable;

and

	pin->disable = val & BIT(0);

respectively. The latter could be dealt with using !!(val & BIT(0)); I
guess the appropriate for for the prior is:

	if (pin->disable)
		val |= BIT(0);

If you would like to update your patch with these as well I'd be happy
to review this.

Thanks,
Bjorn

> ---
>  drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c b/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c
> index b5949f7..eb0b60c 100644
> --- a/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c
> +++ b/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c
> @@ -331,13 +331,13 @@ static int pm8xxx_pin_config_set(struct pinctrl_dev *pctldev,
>  		case PIN_CONFIG_BIAS_DISABLE:
>  			pin->bias = PM8XXX_GPIO_BIAS_NP;
>  			banks |= BIT(2);
> -			pin->disable = 0;
> +			pin->disable = false;
>  			banks |= BIT(3);
>  			break;
>  		case PIN_CONFIG_BIAS_PULL_DOWN:
>  			pin->bias = PM8XXX_GPIO_BIAS_PD;
>  			banks |= BIT(2);
> -			pin->disable = 0;
> +			pin->disable = false;
>  			banks |= BIT(3);
>  			break;
>  		case PM8XXX_QCOM_PULL_UP_STRENGTH:
> @@ -350,11 +350,11 @@ static int pm8xxx_pin_config_set(struct pinctrl_dev *pctldev,
>  		case PIN_CONFIG_BIAS_PULL_UP:
>  			pin->bias = pin->pull_up_strength;
>  			banks |= BIT(2);
> -			pin->disable = 0;
> +			pin->disable = false;
>  			banks |= BIT(3);
>  			break;
>  		case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
> -			pin->disable = 1;
> +			pin->disable = true;
>  			banks |= BIT(3);
>  			break;
>  		case PIN_CONFIG_INPUT_ENABLE:
> -- 
> 1.8.3.1
>