[STLinux Kernel] [PATCH v3 5/8] watchdog: st_wdt: Add new driver for ST's LPC Watchdog

Peter Griffin peter.griffin at linaro.org
Mon Feb 23 02:25:26 PST 2015


Hi Lee,

<snip>

> +#ifdef CONFIG_PM_SLEEP
> +static int st_wdog_suspend(struct device *dev)
> +{
> +	struct st_wdog *st_wdog = watchdog_get_drvdata(&st_wdog_dev);
> +
> +	if (watchdog_active(&st_wdog_dev))
> +		st_wdog_stop(&st_wdog_dev);
> +
> +	st_wdog_setup(st_wdog, false);

I was expecting the suspend / resume callbacks would be disabling / enabling
the IP clock.

Is there a reason why it doesn't?

>From looking at the code by this point the watchdog has already been disabled so gating
the IP seems reasonable.

regards,

Peter



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