linux-kernel - Re: [PATCH v5 1/3] watchdog: introduce watchdog_worker_should

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Message-ID: <2360adb8-ad7b-9b9f-d83c-db994dec00c9@roeck-us.net>
Date:   Wed, 24 May 2017 17:53:21 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Rasmus Villemoes <rasmus.villemoes@...vas.dk>,
        Wim Van Sebroeck <wim@...ana.be>
Cc:     Sebastian Reichel <sebastian.reichel@...labora.co.uk>,
        esben.haabendal@...il.com, linux-watchdog@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 1/3] watchdog: introduce watchdog_worker_should_ping
 helper

On 05/22/2017 07:06 AM, Rasmus Villemoes wrote:
> This will be useful when the condition becomes slightly more
> complicated in the next patch.
> 
> Signed-off-by: Rasmus Villemoes <rasmus.villemoes@...vas.dk>

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

> ---
>   drivers/watchdog/watchdog_dev.c | 13 +++++++++----
>   1 file changed, 9 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c
> index d5d2bbd..caa4b90 100644
> --- a/drivers/watchdog/watchdog_dev.c
> +++ b/drivers/watchdog/watchdog_dev.c
> @@ -192,18 +192,23 @@ static int watchdog_ping(struct watchdog_device *wdd)
>   	return __watchdog_ping(wdd);
>   }
>   
> +static bool watchdog_worker_should_ping(struct watchdog_core_data *wd_data)
> +{
> +	struct watchdog_device *wdd = wd_data->wdd;
> +
> +	return wdd && (watchdog_active(wdd) || watchdog_hw_running(wdd));
> +}
> +
>   static void watchdog_ping_work(struct work_struct *work)
>   {
>   	struct watchdog_core_data *wd_data;
> -	struct watchdog_device *wdd;
>   
>   	wd_data = container_of(to_delayed_work(work), struct watchdog_core_data,
>   			       work);
>   
>   	mutex_lock(&wd_data->lock);
> -	wdd = wd_data->wdd;
> -	if (wdd && (watchdog_active(wdd) || watchdog_hw_running(wdd)))
> -		__watchdog_ping(wdd);
> +	if (watchdog_worker_should_ping(wd_data))
> +		__watchdog_ping(wd_data->wdd);
>   	mutex_unlock(&wd_data->lock);
>   }
>   
>