linux-kernel - Re: [PATCH v1 1/8] docs: watchdog: codify ident.options as superset of possible status flags

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Message-ID: <20200630204940.GA21564@roeck-us.net>
Date:   Tue, 30 Jun 2020 13:49:40 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Ahmad Fatoum <a.fatoum@...gutronix.de>
Cc:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        linux-watchdog@...r.kernel.org, kernel@...gutronix.de,
        Jonathan Corbet <corbet@....net>, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/8] docs: watchdog: codify ident.options as superset
 of possible status flags

On Thu, Jun 11, 2020 at 09:17:42PM +0200, Ahmad Fatoum wrote:
> The FIXME comment has been in-tree since the very first git commit.
> The described behavior has been since relied on by some userspace, e.g.
> the util-linux wdctl command and has been ignored by some kernelspace,
> like the f71808e_wdt driver.
> 
> The functionality is useful to have to be able to differentiate between a
> driver that doesn't support WDIOF_CARDRESET and one that does, but hasn't
> had a watchdog reset, thus drop the FIXME to encourage drivers adopting
> this convention.
> 
> Signed-off-by: Ahmad Fatoum <a.fatoum@...gutronix.de>

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

> ---
>  Documentation/watchdog/watchdog-api.rst | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/Documentation/watchdog/watchdog-api.rst b/Documentation/watchdog/watchdog-api.rst
> index c6c1e9fa9f73..800dcd7586f2 100644
> --- a/Documentation/watchdog/watchdog-api.rst
> +++ b/Documentation/watchdog/watchdog-api.rst
> @@ -168,7 +168,7 @@ the fields returned in the ident struct are:
>  
>  the options field can have the following bits set, and describes what
>  kind of information that the GET_STATUS and GET_BOOT_STATUS ioctls can
> -return.   [FIXME -- Is this correct?]
> +return.
>  
>  	================	=========================
>  	WDIOF_OVERHEAT		Reset due to CPU overheat