linux-kernel - Re: [PATCH V2] watchdog: Improve watchdog

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Date:   Fri, 11 Feb 2022 10:08:06 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Daniel Bristot de Oliveira <bristot@...nel.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>
Cc:     linux-watchdog@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] watchdog: Improve watchdog_dev function documentation

Hi Daniel,

On 2/11/22 06:30, Daniel Bristot de Oliveira wrote:
> Adjust function comments to the kernel doc format. It
> also adjusts some variable names and adds return values.
> 
> No functional change.
> 
> Changes from V1:
>   Change "Returns" to "Return:" (Randy Dunlap)
> 
> Cc: Wim Van Sebroeck <wim@...ux-watchdog.org>
> Cc: Guenter Roeck <linux@...ck-us.net>
> Cc: Randy Dunlap <rdunlap@...radead.org>
> Cc: linux-watchdog@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Daniel Bristot de Oliveira <bristot@...nel.org>


scripts/kernel-doc throws one warning:
watchdog_dev.c:1194: warning: contents before sections

which is a bug in the script IMO.
I would just ignore this one.
(see more below)


Tested-by: Randy Dunlap <rdunlap@...radead.org>
Acked-by: Randy Dunlap <rdunlap@...radead.org>

Thanks.

> ---
>  drivers/watchdog/watchdog_dev.c | 244 ++++++++++++++++----------------
>  1 file changed, 125 insertions(+), 119 deletions(-)
> 
> diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c
> index 3a3d8b5c7ad5..54903f3c851e 100644
> --- a/drivers/watchdog/watchdog_dev.c
> +++ b/drivers/watchdog/watchdog_dev.c


scripts/kernel-doc does not nicely handle a function that has
no parameters (hence no @param descriptions) that is followed
by a function description.

Adding one line (I am not suggesting this as a patch) stops the
warning:

 * @void: none


This is the function that kernel-doc complains about
(nothing wrong with it):

/**
 * watchdog_dev_init - init dev part of watchdog core
 *
 * Allocate a range of chardev nodes to use for watchdog devices.
 *
 * Return: 0 if successful, error otherwise.
 */
int __init watchdog_dev_init(void)
{


-- 
~Randy