Re: [PATCH v2 0/4] watchdog: add driver for Renesas Gen3 WDT watchdogs

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On Mon, Apr 04, 2016 at 05:21:44PM +0200, Geert Uytterhoeven wrote:
> Hi Wolfram,
> 
> On Mon, Apr 4, 2016 at 4:59 PM, Wolfram Sang <wsa@xxxxxxxxxxxxx> wrote:
> >> My Salvator-X reboots after timeout from "cat > /dev/watchdog0", but
> >> it doesn't reboot through "reboot" or "reboot -f"?
> >
> > That sadly doesn't work on Gen3. From the RFC v5 cover letter:
> 
> > ===
> >
> > * drop restart_handler since ARM64 uses PSCI firmware resets which do
> >   not call restart handlers
> >
> > The last point was quite a bummer to me because plain reboot was the
> > reason I wrote this driver ;) Well, so is life...
> 
> That's indeed silly. Can't we have it as a low-priority restart handler, to

Yes, it is. It defeats the purpose of restart handlers. PSCI reset should have
been implemented as a high priority restart handler.

Guenter

> restart the system if PSCI fails to do so?
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds
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