linux-kernel - Re: [PATCH 9/9] i2c: synquacer: Use dev_err

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Date:   Sat, 5 Aug 2023 00:18:24 +0200
From:   Andi Shyti <andi.shyti@...nel.org>
To:     Liao Chang <liaochang1@...wei.com>
Cc:     florian.fainelli@...adcom.com,
        bcm-kernel-feedback-list@...adcom.com, rjui@...adcom.com,
        sbranden@...adcom.com, yangyicong@...ilicon.com,
        aisheng.dong@....com, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        kblaiech@...dia.com, asmaa@...dia.com, loic.poulain@...aro.org,
        rfoss@...nel.org, ardb@...nel.org, gcherian@...vell.com,
        linux-i2c@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 9/9] i2c: synquacer: Use dev_err_probe in probe function

On Wed, Aug 02, 2023 at 05:57:37PM +0800, Liao Chang wrote:
> Use the dev_err_probe function instead of dev_err in the probe function
> so that the printed messge includes the return value and also handles
> -EPROBE_DEFER nicely.
> 
> Signed-off-by: Liao Chang <liaochang1@...wei.com>
> ---
>  drivers/i2c/busses/i2c-synquacer.c | 19 ++++++-------------
>  1 file changed, 6 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-synquacer.c b/drivers/i2c/busses/i2c-synquacer.c
> index 4cc196ca8f6d..8ada613598eb 100644
> --- a/drivers/i2c/busses/i2c-synquacer.c
> +++ b/drivers/i2c/busses/i2c-synquacer.c
> @@ -557,11 +557,8 @@ static int synquacer_i2c_probe(struct platform_device *pdev)
>  		dev_dbg(&pdev->dev, "clock source %p\n", i2c->pclk);
>  
>  		ret = clk_prepare_enable(i2c->pclk);
> -		if (ret) {
> -			dev_err(&pdev->dev, "failed to enable clock (%d)\n",
> -				ret);
> -			return ret;
> -		}
> +		if (ret)
> +			return dev_err_probe(&pdev->dev, ret, "failed to enable clock\n");
>  		i2c->pclkrate = clk_get_rate(i2c->pclk);
>  	}
>  

you forgot

		dev_err(&pdev->dev, "PCLK missing or out of range (%d)\n",
			i2c->pclkrate);
		return -EINVAL;

Thanks,
Andi