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SubjectRe: [PATCH] watchdog: omap_wdt: start_enabled module parameter
On 06/19/2015 06:18 AM, poeschel@lemonage.de wrote:
> From: Lars Poeschel <poeschel@lemonage.de>
>
> Add a start_enabled module parameter to the omap_wdt that starts the
> watchdog on module insertion. The default value is 0 which does not
> start the watchdog - which also does not change the behaviour if the

behavior

> parameter is not given.
>
> Signed-off-by: Lars Poeschel <poeschel@lemonage.de>
> ---
> Documentation/watchdog/watchdog-parameters.txt | 1 +
> drivers/watchdog/omap_wdt.c | 10 ++++++++++
> 2 files changed, 11 insertions(+)
>
> diff --git a/Documentation/watchdog/watchdog-parameters.txt b/Documentation/watchdog/watchdog-parameters.txt
> index 692791c..fb023bb 100644
> --- a/Documentation/watchdog/watchdog-parameters.txt
> +++ b/Documentation/watchdog/watchdog-parameters.txt
> @@ -208,6 +208,7 @@ nowayout: Watchdog cannot be stopped once started
> -------------------------------------------------
> omap_wdt:
> timer_margin: initial watchdog timeout (in seconds)
> +start_enabled: Watchdog is started on module insertion (default=0)

Please name the parameter early_enable. We have one driver with early_disable,
so this makes it at least to some degree generic.

> -------------------------------------------------
> orion_wdt:
> heartbeat: Initial watchdog heartbeat in seconds
> diff --git a/drivers/watchdog/omap_wdt.c b/drivers/watchdog/omap_wdt.c
> index a29a61d..7dc8de7 100644
> --- a/drivers/watchdog/omap_wdt.c
> +++ b/drivers/watchdog/omap_wdt.c
> @@ -53,6 +53,13 @@ static unsigned timer_margin;
> module_param(timer_margin, uint, 0);
> MODULE_PARM_DESC(timer_margin, "initial watchdog timeout (in seconds)");
>
> +#define START_DEFAULT 0
> +static bool start_enabled = START_DEFAULT;

Please drop the define. Static variables do not need to be initialized to 0.
Cirumventing that with a define to defeat the resulting warning isn't really
the idea.

> +module_param(start_enabled, bool, 0);
> +MODULE_PARM_DESC(start_enabled,
> + "Watchdog is started on module insertion (default="
> + __MODULE_STRING(START_DEFAULT) ")");

and just make this default=0.

Thanks,
Guenter

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