linux-kernel - Re: [PATCH] ARM: shmobile: fix build regressions

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Date:   Tue, 11 Dec 2018 09:58:05 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Simon Horman <horms@...ge.net.au>,
        Magnus Damm <magnus.damm@...il.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Biju Das <biju.das@...renesas.com>,
        Fabrizio Castro <fabrizio.castro@...renesas.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Jacopo Mondi <jacopo+renesas@...ndi.org>,
        Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARM: shmobile: fix build regressions

Hi Arnd,

On Mon, Dec 10, 2018 at 10:00 PM Arnd Bergmann <arnd@...db.de> wrote:
> A number of Kconfig options have become available now to random ARM
> platforms outside of ARCH_MULTIPLATFORM, which now causes Kconfig
> warnings, and other build errors when those select options that
> lack additonal dependencies, e.g.:
>
> WARNING: unmet direct dependencies detected for HAVE_ARM_ARCH_TIMER
>   Depends on [n]: CPU_V7 [=n]
>   Selected by [y]:
>   - ARCH_RCAR_GEN2 [=y] && SOC_RENESAS [=y]
>   - ARCH_R8A73A4 [=y] && SOC_RENESAS [=y] && ARM [=y]
>
> WARNING: unmet direct dependencies detected for SYS_SUPPORTS_EM_STI
>   Depends on [n]: GENERIC_CLOCKEVENTS [=n]
>   Selected by [y]:
>   - ARCH_EMEV2 [=y] && SOC_RENESAS [=y] && ARM [=y]
>
> Put the old dependency on ARCH_RENESAS back for the moment to restore
> the previous behavior.
>
> Fixes: 062887bf5ef7 ("ARM: shmobile: Move SoC Kconfig symbols to drivers/soc/renesas/")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  drivers/soc/renesas/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/soc/renesas/Kconfig b/drivers/soc/renesas/Kconfig
> index 4d8012e1205c..68bfca6f20dd 100644
> --- a/drivers/soc/renesas/Kconfig
> +++ b/drivers/soc/renesas/Kconfig
> @@ -44,7 +44,7 @@ config ARCH_RZN1
>         bool
>         select ARM_AMBA
>
> -if ARM
> +if ARM && ARCH_RENESAS

After a closer look, I think restricting this from ARM to ARCH_MULTI_V7
should work, too (ARCH_MULTI_V7 selects CPU_V7, and ARCH_MULTIPLATFORM
selects GENERIC_CLOCKEVENTS).

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