linux-kernel - Re: [PATCH] drm: xlnx: zynqmp: Use dev_err

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Message-ID: <20230322084946.GI20234@pendragon.ideasonboard.com>
Date:   Wed, 22 Mar 2023 10:49:46 +0200
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     ye.xingchen@....com.cn
Cc:     hyun.kwon@...inx.com, airlied@...il.com, daniel@...ll.ch,
        michal.simek@...inx.com, dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm: xlnx: zynqmp: Use dev_err_probe()

Hi Ye,

Thank you for the patch.

On Wed, Mar 22, 2023 at 04:25:25PM +0800, ye.xingchen@....com.cn wrote:
> From: Ye Xingchen <ye.xingchen@....com.cn>
> 
> Replace the open-code with dev_err_probe() to simplify the code.
> 
> Signed-off-by: Ye Xingchen <ye.xingchen@....com.cn>
> ---
>  drivers/gpu/drm/xlnx/zynqmp_dp.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/xlnx/zynqmp_dp.c b/drivers/gpu/drm/xlnx/zynqmp_dp.c
> index 0a7b466446fb..c6c2cb4626b9 100644
> --- a/drivers/gpu/drm/xlnx/zynqmp_dp.c
> +++ b/drivers/gpu/drm/xlnx/zynqmp_dp.c
> @@ -1700,10 +1700,8 @@ int zynqmp_dp_probe(struct zynqmp_dpsub *dpsub)
> 
>  	dp->reset = devm_reset_control_get(dp->dev, NULL);
>  	if (IS_ERR(dp->reset)) {
> -		if (PTR_ERR(dp->reset) != -EPROBE_DEFER)
> -			dev_err(dp->dev, "failed to get reset: %ld\n",
> -				PTR_ERR(dp->reset));
> -		ret = PTR_ERR(dp->reset);
> +		ret = dev_err_probe(dp->dev, PTR_ERR(dp->reset),
> +				    "failed to get reset: %ld\n");

There's no format string argument anymore, so you should drop the
": %ld". Didn't the compiler warn about this ?

>  		goto err_free;
>  	}
> 

-- 
Regards,

Laurent Pinchart