linux-kernel - Re: [PATCH] of/fdt: Fix #ifdef dependency of early flattree declarations

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Date:   Thu, 4 Jan 2018 09:33:25 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     kbuild test robot <lkp@...el.com>
Cc:     Geert Uytterhoeven <geert+renesas@...der.be>, kbuild-all@...org,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Pantelis Antoniou <pantelis.antoniou@...sulko.com>,
        devicetree@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] of/fdt: Fix #ifdef dependency of early flattree declarations

Hi Fengguang,

On Thu, Jan 4, 2018 at 12:16 AM, kbuild test robot <lkp@...el.com> wrote:
> I love your patch! Yet something to improve:

Thanks, I love your report!

> url:    https://github.com/0day-ci/linux/commits/Geert-Uytterhoeven/of-fdt-Fix-ifdef-dependency-of-early-flattree-declarations/20180104-062259
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
> config: i386-randconfig-i0-201800 (attached as .config)
> compiler: gcc-7 (Debian 7.2.0-12) 7.2.1 20171025
> reproduce:
>         # save the attached .config to linux build tree
>         make ARCH=i386
>
> All errors (new ones prefixed by >>):
>
>    drivers/tty/serial/earlycon.c: In function 'param_setup_earlycon':
>>> drivers/tty/serial/earlycon.c:221:11: error: implicit declaration of function 'early_init_dt_scan_chosen_stdout' [-Werror=implicit-function-declaration]
>        return early_init_dt_scan_chosen_stdout();
>               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    cc1: some warnings being treated as errors

Bummer, of course the dummies should be provided based on complementary
logic... Will fix in v2.

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