linux-kernel - Re: mmotm 2021-10-05-19-53 uploaded (drivers/gpu/drm/msm/hdmi/hdmi

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Message-ID: <CAMuHMdV3eMchpgUasU6BBHrDQyjCc2TrqJ+zJgFhgAySpqVGfw@mail.gmail.com>
Date:   Thu, 7 Oct 2021 11:28:07 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Christian König <christian.koenig@....com>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Randy Dunlap <rdunlap@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mark Brown <broonie@...nel.org>,
        Linux FS Devel <linux-fsdevel@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux MM <linux-mm@...ck.org>,
        Linux-Next <linux-next@...r.kernel.org>,
        Michal Hocko <mhocko@...e.cz>, mm-commits@...r.kernel.org,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        freedreno@...ts.freedesktop.org,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Intel Graphics <intel-gfx@...ts.freedesktop.org>,
        DRI <dri-devel@...ts.freedesktop.org>
Subject: Re: mmotm 2021-10-05-19-53 uploaded (drivers/gpu/drm/msm/hdmi/hdmi_phy.o)

Hi Christian,

On Wed, Oct 6, 2021 at 9:28 AM Christian König <christian.koenig@....com> wrote:
> Am 06.10.21 um 09:20 schrieb Stephen Rothwell:
> > On Tue, 5 Oct 2021 22:48:03 -0700 Randy Dunlap <rdunlap@...radead.org> wrote:
> >> on i386:
> >>
> >> ld: drivers/gpu/drm/msm/hdmi/hdmi_phy.o:(.rodata+0x3f0): undefined reference to `msm_hdmi_phy_8996_cfg'
> >>
> >>
> >> Full randconfig fle is attached.
> > This would be because CONFIG_DRM_MSM is set but CONFIG_COMMON_CLOCK is
> > not and has been exposed by commit
> >
> >    b3ed524f84f5 ("drm/msm: allow compile_test on !ARM")
> >
> > from the drm-misc tree.
>
> Good point, how about this change:
>
> diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig
> index 5879f67bc88c..d9879b011fb0 100644
> --- a/drivers/gpu/drm/msm/Kconfig
> +++ b/drivers/gpu/drm/msm/Kconfig
> @@ -5,7 +5,7 @@ config DRM_MSM
>          depends on DRM
>          depends on ARCH_QCOM || SOC_IMX5 || COMPILE_TEST
>          depends on IOMMU_SUPPORT
> -       depends on (OF && COMMON_CLK) || COMPILE_TEST
> +       depends on (OF || COMPILE_TEST) && COMMON_CLK

I'd make that:

    -        depends on DRM
    +       depends on COMMON_CLK && DRM && IOMMU_SUPPORT
            depends on ARCH_QCOM || SOC_IMX5 || COMPILE_TEST
    -        depends on IOMMU_SUPPORT
    -       depends on (OF && COMMON_CLK) || COMPILE_TEST
    +       depends on OF || COMPILE_TEST

to keep a better separation between hard and soft dependencies.

Note that the "depends on OF || COMPILE_TEST" can even be
deleted, as the dependency on ARCH_QCOM || SOC_IMX5 implies OF.

>          depends on QCOM_OCMEM || QCOM_OCMEM=n
>          depends on QCOM_LLCC || QCOM_LLCC=n
>          depends on QCOM_COMMAND_DB || QCOM_COMMAND_DB=n
>

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