linux-kernel - Re: [PATCH 1/3] watchdog: cadence: Simplify with dev_err

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Date:   Tue, 1 Sep 2020 08:49:52 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        linux-watchdog@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] watchdog: cadence: Simplify with dev_err_probe()

On Tue, Sep 01, 2020 at 05:31:39PM +0200, Krzysztof Kozlowski wrote:
> Common pattern of handling deferred probe can be simplified with
> dev_err_probe().  Less code and the error value gets printed.
> 
> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>

Reviewed-by: Guenter Roeck <linux@...ck-us.net>

> ---
>  drivers/watchdog/cadence_wdt.c | 9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/watchdog/cadence_wdt.c b/drivers/watchdog/cadence_wdt.c
> index 672b184da875..bc99e9164930 100644
> --- a/drivers/watchdog/cadence_wdt.c
> +++ b/drivers/watchdog/cadence_wdt.c
> @@ -334,12 +334,9 @@ static int cdns_wdt_probe(struct platform_device *pdev)
>  	watchdog_set_drvdata(cdns_wdt_device, wdt);
>  
>  	wdt->clk = devm_clk_get(dev, NULL);
> -	if (IS_ERR(wdt->clk)) {
> -		ret = PTR_ERR(wdt->clk);
> -		if (ret != -EPROBE_DEFER)
> -			dev_err(dev, "input clock not found\n");
> -		return ret;
> -	}
> +	if (IS_ERR(wdt->clk))
> +		return dev_err_probe(dev, PTR_ERR(wdt->clk),
> +				     "input clock not found\n");
>  
>  	ret = clk_prepare_enable(wdt->clk);
>  	if (ret) {
> -- 
> 2.17.1
>