linux-kernel - Re: [PATCH] watchdog: test_bit() => watchdog

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Date:   Fri, 29 May 2020 09:52:17 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Bumsik Kim <kbumsik@...il.com>
Cc:     wim@...ux-watchdog.org, corbet@....net,
        linux-kernel@...r.kernel.org, linux-watchdog@...r.kernel.org,
        Bumsik Kim <k.bumsik@...il.com>
Subject: Re: [PATCH] watchdog: test_bit() => watchdog_active()

On Fri, May 29, 2020 at 10:24:28AM +0900, Bumsik Kim wrote:
> Use the dedicated function watchdog_active()
> instead of the generic test_bit() function.
> 
> It is done using the following Coccinelle script:
> 
> @@
> identifier wdd;
> @@
> - test_bit(WDOG_ACTIVE, &wdd->status)
> + watchdog_active(wdd)
> 
> Signed-off-by: Bumsik Kim <k.bumsik@...il.com>

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

> ---
>  drivers/watchdog/watchdog_dev.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c
> index 7e4cd34a8c20..3ae608d78af2 100644
> --- a/drivers/watchdog/watchdog_dev.c
> +++ b/drivers/watchdog/watchdog_dev.c
> @@ -916,7 +916,7 @@ static int watchdog_release(struct inode *inode, struct file *file)
>  	 * or if WDIOF_MAGICCLOSE is not set. If nowayout was set then
>  	 * watchdog_stop will fail.
>  	 */
> -	if (!test_bit(WDOG_ACTIVE, &wdd->status))
> +	if (!watchdog_active(wdd))
>  		err = 0;
>  	else if (test_and_clear_bit(_WDOG_ALLOW_RELEASE, &wd_data->status) ||
>  		 !(wdd->info->options & WDIOF_MAGICCLOSE))
> -- 
> 2.26.2
>