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

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Message-ID: <CAMuHMdVOBnZ=pyVeGSxbOT9MtRR2iNY4V-PUm0NU=UFQ2pxE_g@mail.gmail.com>
Date:	Thu, 9 Oct 2014 13:31:40 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Guenter Roeck <linux@...ck-us.net>
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Subject: Re: [PATCH 01/44] kernel: Add support for poweroff handler call chain

On Tue, Oct 7, 2014 at 7:28 AM, Guenter Roeck <linux@...ck-us.net> 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);

> +               return -EBUSY;
> +       }

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

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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