Re: [PATCH 01/44] kernel: Add support for poweroff handler call chain

[Guenter Roeck <linux@xxxxxxxxxxxx>]

On 10/09/2014 04:31 AM, Geert Uytterhoeven wrote:
> On Tue, Oct 7, 2014 at 7:28 AM, Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
> > +int register_poweroff_handler_simple(void (*handler)(void), int priority)
> > +{
> > +       char symname[KSYM_NAME_LEN];
> > +
> > +       if (poweroff_handler_data.handler) {
> > +               lookup_symbol_name((unsigned long)poweroff_handler_data.handler,
> > +                                  symname);
> > +               pr_warn("Poweroff function already registered (%s)", symname);
> > +               lookup_symbol_name((unsigned long)handler, symname);
> > +               pr_cont(", cannot register %s\n", symname);
>
> Doesn't %ps work to look up symbols?
>
> pr_warn("Poweroff function already registered (%ps), cannot register
> %ps\n", poweroff_handler_data.handler, handler);

Hi Geert,

That is great. One never stops learning. I'll use that.

Thanks!

Guenter