linux-kernel - Re: [PATCH] rtc: rzn1: Check return value in rzn1_rtc

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Date:   Mon, 7 Nov 2022 10:49:16 +0100
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     zys.zljxml@...il.com
Cc:     a.zummo@...ertech.it, alexandre.belloni@...tlin.com,
        michel.pollet@...renesas.com, linux-rtc@...r.kernel.org,
        linux-renesas-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Yushan Zhou <katrinzhou@...cent.com>
Subject: Re: [PATCH] rtc: rzn1: Check return value in rzn1_rtc_probe

Hello,

zys.zljxml@...il.com wrote on Mon,  7 Nov 2022 17:25:44 +0800:

> From: Yushan Zhou <katrinzhou@...cent.com>
> 
> The rzn1_rtc_probe() function utilizes devm_pm_runtime_enable()
> but wasn't checking the return value. Fix it by adding missing
> check.
> 
> Fixes: deeb4b5393e1 ("rtc: rzn1: Add new RTC driver")
> 
> Signed-off-by: Yushan Zhou <katrinzhou@...cent.com>
> ---
>  drivers/rtc/rtc-rzn1.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/rtc/rtc-rzn1.c b/drivers/rtc/rtc-rzn1.c
> index ac788799c8e3..0d36bc50197c 100644
> --- a/drivers/rtc/rtc-rzn1.c
> +++ b/drivers/rtc/rtc-rzn1.c
> @@ -355,7 +355,9 @@ static int rzn1_rtc_probe(struct platform_device *pdev)
>  	set_bit(RTC_FEATURE_ALARM_RES_MINUTE, rtc->rtcdev->features);
>  	clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->rtcdev->features);
>  
> -	devm_pm_runtime_enable(&pdev->dev);
> +	ret = devm_pm_runtime_enable(&pdev->dev);
> +	if (ret < 0)
> +		return ret;
>  	ret = pm_runtime_resume_and_get(&pdev->dev);
>  	if (ret < 0)
>  		return ret;

Reviewed-by: Miquel Raynal <miquel.raynal@...tlin.com>

Thanks,
Miquèl