linux-kernel - Re: [PATCH 1/2] pwm: pwm-mediatek: Simplify error handling with dev_err

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Date:   Mon, 14 Feb 2022 14:48:50 +0100
From:   Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     thierry.reding@...il.com, lee.jones@...aro.org,
        matthias.bgg@...il.com, linux-pwm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, kernel@...labora.com
Subject: Re: [PATCH 1/2] pwm: pwm-mediatek: Simplify error handling with
 dev_err_probe()

On Mon, Feb 14, 2022 at 12:30:37PM +0100, AngeloGioacchino Del Regno wrote:
> Use dev_err_probe() to simplify handling errors in pwm_mediatek_probe().
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> ---
>  drivers/pwm/pwm-mediatek.c | 30 +++++++++++-------------------
>  1 file changed, 11 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/pwm/pwm-mediatek.c b/drivers/pwm/pwm-mediatek.c
> index 0d4dd80e9f07..c7d5ca09a684 100644
> --- a/drivers/pwm/pwm-mediatek.c
> +++ b/drivers/pwm/pwm-mediatek.c
> @@ -227,18 +227,14 @@ static int pwm_mediatek_probe(struct platform_device *pdev)
>  		return -ENOMEM;
>  
>  	pc->clk_top = devm_clk_get(&pdev->dev, "top");
> -	if (IS_ERR(pc->clk_top)) {
> -		dev_err(&pdev->dev, "clock: top fail: %ld\n",
> -			PTR_ERR(pc->clk_top));
> -		return PTR_ERR(pc->clk_top);
> -	}
> +	if (IS_ERR(pc->clk_top))
> +		return dev_err_probe(&pdev->dev, PTR_ERR(pc->clk_top),
> +				     "clock: top failed\n");

The change looks straight forward. I wonder if we should improve the
error message on this occasion. E.g.

	"Failed to get top clock\n"

? Ditto below.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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