On Fri, Nov 16, 2012 at 06:55:39PM +0100, Jean-Christophe PLAGNIOL-VILLARD
wrote:
> this will allow to ping the watchdog via poller
>
> /*
> * Note: this simple framework supports one watchdog only.
> */
> static struct watchdog *watchdog;
>
> +static void watchdog_poller_func(struct poller_struct *poller)
> +{
> + watchdog->keep_alive(watchdog);
> +}
> +
> +static struct poller_struct watchdog_poller = {
> + .func = watchdog_poller_func,
> +};
> +
> int watchdog_register(struct watchdog *wd)
> {
> if (watchdog != NULL)
> return -EBUSY;
>
> watchdog = wd;
> +
> + if (watchdog->keep_alive) {
> + int ret;
> +
> + ret = poller_register(&watchdog_poller);
> + if (ret) {
> + watchdog = NULL;
> + return ret;
> + }
> + }
Currently the watchdog is supposed to be kept alive with periodically
calling the watchdog (or wd) command. A user may decide to just
periodically ping the watchdog from C code, but this should be a users
decision (i.e. some enhancement to the wd command) and should be
available for i.MX aswell.
Sascha
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