linux-kernel - Re: [RESEND PATCH v7 1/2] EDAC/qcom: Remove extra error no assignment in qcom_llcc_core

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Date:   Wed, 17 May 2023 12:35:31 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc:     andersson@...nel.org, mchehab@...nel.org, james.morse@....com,
        rric@...nel.org, linux-arm-msm@...r.kernel.org,
        linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org,
        dmitry.baryshkov@...aro.org
Subject: Re: [RESEND PATCH v7 1/2] EDAC/qcom: Remove extra error no
 assignment in qcom_llcc_core_setup()

On Wed, May 17, 2023 at 11:58:58AM +0530, Manivannan Sadhasivam wrote:
> If the ret variable is initialized with -EINVAL, then there is no need to
> assign it again in the default case of qcom_llcc_core_setup().
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> ---
>  drivers/edac/qcom_edac.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/edac/qcom_edac.c b/drivers/edac/qcom_edac.c
> index 265e0fb39bc7..53d666ffcb1f 100644
> --- a/drivers/edac/qcom_edac.c
> +++ b/drivers/edac/qcom_edac.c
> @@ -170,7 +170,7 @@ static int qcom_llcc_core_setup(struct regmap *llcc_bcast_regmap)
>  static int
>  qcom_llcc_clear_error_status(int err_type, struct llcc_drv_data *drv)
>  {
> -	int ret = 0;
> +	int ret = -EINVAL;

It is actually better to leave it here uninitialized...

>  
>  	switch (err_type) {
>  	case LLCC_DRAM_CE:
> @@ -198,7 +198,6 @@ qcom_llcc_clear_error_status(int err_type, struct llcc_drv_data *drv)
>  			return ret;
>  		break;
>  	default:
> -		ret = -EINVAL;

... and initialize it here to -EINVAL because then it is perfectly clear
what the default case returns. Instead of going through the whole
function.

-- 
Regards/Gruss,
    Boris.

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