linux-kernel - Re: [PATCH] soc: imx: gpcv2: Use dev_err

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Message-ID: <20200811070308.GB2904@bogon.m.sigxcpu.org>
Date:   Tue, 11 Aug 2020 09:03:08 +0200
From:   Guido Günther <agx@...xcpu.org>
To:     Anson Huang <Anson.Huang@....com>
Cc:     shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
        festevam@...il.com, daniel.baluta@....com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Linux-imx@....com
Subject: Re: [PATCH] soc: imx: gpcv2: Use dev_err_probe() to simplify error
 handling

Hi,
On Tue, Aug 11, 2020 at 11:04:42AM +0800, Anson Huang wrote:
> dev_err_probe() can reduce code size, uniform error handling and record the
> defer probe reason etc., use it to simplify the code.
> 
> Signed-off-by: Anson Huang <Anson.Huang@....com>
> ---
>  drivers/soc/imx/gpcv2.c | 15 +++++----------
>  1 file changed, 5 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/soc/imx/gpcv2.c b/drivers/soc/imx/gpcv2.c
> index 6cf8a7a..db7e7fc 100644
> --- a/drivers/soc/imx/gpcv2.c
> +++ b/drivers/soc/imx/gpcv2.c
> @@ -487,22 +487,17 @@ static int imx_pgc_domain_probe(struct platform_device *pdev)
>  
>  	domain->regulator = devm_regulator_get_optional(domain->dev, "power");
>  	if (IS_ERR(domain->regulator)) {
> -		if (PTR_ERR(domain->regulator) != -ENODEV) {
> -			if (PTR_ERR(domain->regulator) != -EPROBE_DEFER)
> -				dev_err(domain->dev, "Failed to get domain's regulator\n");
> -			return PTR_ERR(domain->regulator);
> -		}
> +		if (PTR_ERR(domain->regulator) != -ENODEV)
> +			return dev_err_probe(domain->dev, PTR_ERR(domain->regulator),
> +					     "Failed to get domain's regulator\n");
>  	} else if (domain->voltage) {
>  		regulator_set_voltage(domain->regulator,
>  				      domain->voltage, domain->voltage);
>  	}
>  
>  	ret = imx_pgc_get_clocks(domain);
> -	if (ret) {
> -		if (ret != -EPROBE_DEFER)
> -			dev_err(domain->dev, "Failed to get domain's clocks\n");
> -		return ret;
> -	}
> +	if (ret)
> +		return dev_err_probe(domain->dev, ret, "Failed to get domain's clocks\n");
>  
>  	ret = pm_genpd_init(&domain->genpd, NULL, true);
>  	if (ret) {

Reviewed-by: Guido Günther <agx@...xcpu.org>
 -- Guido

> -- 
> 2.7.4
>