linux-kernel - Re: [PATCH] watchdog: meson: Handle return value of clk_prepare

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Message-ID: <20170607205225.GC29222@roeck-us.net>
Date:   Wed, 7 Jun 2017 13:52:25 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Arvind Yadav <arvind.yadav.cs@...il.com>
Cc:     wim@...ana.be, carlo@...one.org, khilman@...libre.com,
        linux-watchdog@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] watchdog: meson: Handle return value of
 clk_prepare_enable

On Wed, Jun 07, 2017 at 03:04:15PM +0530, Arvind Yadav wrote:
> clk_prepare_enable() can fail here and we must check its return value.
> 
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>

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

> ---
>  drivers/watchdog/meson_gxbb_wdt.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/watchdog/meson_gxbb_wdt.c b/drivers/watchdog/meson_gxbb_wdt.c
> index 45d4766..69a5a57 100644
> --- a/drivers/watchdog/meson_gxbb_wdt.c
> +++ b/drivers/watchdog/meson_gxbb_wdt.c
> @@ -203,7 +203,9 @@ static int meson_gxbb_wdt_probe(struct platform_device *pdev)
>  	if (IS_ERR(data->clk))
>  		return PTR_ERR(data->clk);
>  
> -	clk_prepare_enable(data->clk);
> +	ret = clk_prepare_enable(data->clk);
> +	if (ret)
> +		return ret;
>  
>  	platform_set_drvdata(pdev, data);
>  
> -- 
> 1.9.1
> 
> --
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