linux-kernel - Re: [PATCH 1/2] watchdog: cadence_wdt: Enable access to module parameters

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Message-ID: <c25ea869-55fe-dde9-4004-cb49bb5553c2@roeck-us.net>
Date:   Fri, 4 Aug 2017 06:45:10 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Michal Simek <michal.simek@...inx.com>,
        linux-kernel@...r.kernel.org, monstr@...str.eu
Cc:     linux-watchdog@...r.kernel.org, Wim Van Sebroeck <wim@...ana.be>
Subject: Re: [PATCH 1/2] watchdog: cadence_wdt: Enable access to module
 parameters

On 08/04/2017 12:39 AM, Michal Simek wrote:
> Give read access to module parameters to all and write access to root.
> This change also improves driver error path testing.
> 
> Signed-off-by: Michal Simek <michal.simek@...inx.com>
> ---
> 
> Please let me know what you think - I can use macros from stat.h if
> required
> 

Seems to be quite pointless and misleading, since the values are only read
at probe time. Am I missing something ?

Guenter

> ---
>   drivers/watchdog/cadence_wdt.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/watchdog/cadence_wdt.c b/drivers/watchdog/cadence_wdt.c
> index 05c000081e9d..dadd3b0c2d49 100644
> --- a/drivers/watchdog/cadence_wdt.c
> +++ b/drivers/watchdog/cadence_wdt.c
> @@ -52,12 +52,12 @@
>   static int wdt_timeout;
>   static int nowayout = WATCHDOG_NOWAYOUT;
>   
> -module_param(wdt_timeout, int, 0);
> +module_param(wdt_timeout, int, 0644);
>   MODULE_PARM_DESC(wdt_timeout,
>   		 "Watchdog time in seconds. (default="
>   		 __MODULE_STRING(CDNS_WDT_DEFAULT_TIMEOUT) ")");
>   
> -module_param(nowayout, int, 0);
> +module_param(nowayout, int, 0644);
>   MODULE_PARM_DESC(nowayout,
>   		 "Watchdog cannot be stopped once started (default="
>   		 __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
>