[RFC v4 13/26] watchdog: renesas_wdt: Add restart handler

[Fabrizio Castro]

Hello Wolfram,

thank you for your feedback!

> Subject: Re: [RFC v4 13/26] watchdog: renesas_wdt: Add restart handler
>
>
> > +static int rwdt_restart(struct watchdog_device *wdev, unsigned long action,
> > +void *data)
> > +{
> > +struct rwdt_priv *priv = watchdog_get_drvdata(wdev);
> > +
> > +pm_runtime_get_sync(wdev->parent);
> > +
> > +rwdt_write(priv, 0x00, RWTCSRB);
> > +rwdt_write(priv, 0x00, RWTCSRA);
> > +rwdt_write(priv, 0xffff, RWTCNT);
> > +
> > +while (readb_relaxed(priv->base + RWTCSRA) & RWTCSRA_WRFLG)
> > +cpu_relax();
> > +
> > +rwdt_write(priv, 0x80, RWTCSRA);
> > +return 0;
> > +}
>
> I used to have this simpler version (back then for the UP case):
>
> +rwdt_start(wdev);
> +rwdt_write(priv, 0xffff, RWTCNT);
> +return 0;
>
> It should still work probably...

It should still work, but it would be slower, I would stick with the version I have submitted if you don't mind.

Thanks,
Fabrizio





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