linux-kernel - Re: [PATCH] fpga: xilinx-pr-decoupler: Simplify code by using dev_err

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Date:   Sat, 6 Feb 2021 12:32:47 -0800
From:   Moritz Fischer <mdf@...nel.org>
To:     Michal Simek <michal.simek@...inx.com>
Cc:     linux-kernel@...r.kernel.org, monstr@...str.eu, git@...inx.com,
        Moritz Fischer <mdf@...nel.org>, Tom Rix <trix@...hat.com>,
        linux-arm-kernel@...ts.infradead.org, linux-fpga@...r.kernel.org
Subject: Re: [PATCH] fpga: xilinx-pr-decoupler: Simplify code by using
 dev_err_probe()

On Thu, Feb 04, 2021 at 02:36:11PM +0100, Michal Simek wrote:
> Use already prepared dev_err_probe() introduced by commit a787e5400a1c
> ("driver core: add device probe log helper").
> It simplifies EPROBE_DEFER handling.
> 
> Signed-off-by: Michal Simek <michal.simek@...inx.com>
> ---
> 
>  drivers/fpga/xilinx-pr-decoupler.c | 8 +++-----
>  1 file changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/fpga/xilinx-pr-decoupler.c b/drivers/fpga/xilinx-pr-decoupler.c
> index 7d69af230567..b0eaf26af6e7 100644
> --- a/drivers/fpga/xilinx-pr-decoupler.c
> +++ b/drivers/fpga/xilinx-pr-decoupler.c
> @@ -100,11 +100,9 @@ static int xlnx_pr_decoupler_probe(struct platform_device *pdev)
>  		return PTR_ERR(priv->io_base);
>  
>  	priv->clk = devm_clk_get(&pdev->dev, "aclk");
> -	if (IS_ERR(priv->clk)) {
> -		if (PTR_ERR(priv->clk) != -EPROBE_DEFER)
> -			dev_err(&pdev->dev, "input clock not found\n");
> -		return PTR_ERR(priv->clk);
> -	}
> +	if (IS_ERR(priv->clk))
> +		return dev_err_probe(&pdev->dev, PTR_ERR(priv->clk),
> +				     "input clock not found\n");
>  
>  	err = clk_prepare_enable(priv->clk);
>  	if (err) {
> -- 
> 2.30.0
> 
Looks good, will queue.

- Moritz