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Date:   Sun, 3 Jan 2021 16:24:15 +0100
From:   Arnd Bergmann <>
To:     kernel test robot <>
Cc:     Rob Clark <>, Sean Paul <>,
        David Airlie <>,
        Daniel Vetter <>,
        Sharat Masetty <>,
        Sai Prakash Ranjan <>,, Arnd Bergmann <>,
        linux-arm-msm <>,
        "" <>,
        Tanmay Shah <>
Subject: Re: [PATCH] drm/msm/a6xx: add CONFIG_QCOM_LLCC dependency

On Sun, Jan 3, 2021 at 4:09 PM kernel test robot <> wrote:
> Hi Arnd,
> I love your patch! Yet something to improve:
> [auto build test ERROR on linus/master]
> [also build test ERROR on v5.11-rc1 next-20201223]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> url:
> base: 3516bd729358a2a9b090c1905bd2a3fa926e24c6
> config: i386-randconfig-m021-20210103 (attached as .config)
> compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
> reproduce (this is a W=1 build):
>         #
>         git remote add linux-review
>         git fetch --no-tags linux-review Arnd-Bergmann/drm-msm-a6xx-add-CONFIG_QCOM_LLCC-dependency/20210103-220704
>         git checkout 7d8b8d7954012e210a5e6c77103e52382c6b5503
>         # save the attached .config to linux build tree
>         make W=1 ARCH=i386
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <>
> All errors (new ones prefixed by >>):
> >> drivers/gpu/drm/Kconfig:74:error: recursive dependency detected!
>    drivers/gpu/drm/Kconfig:74: symbol DRM_KMS_HELPER is selected by DRM_MSM
>    drivers/gpu/drm/msm/Kconfig:3: symbol DRM_MSM depends on QCOM_COMMAND_DB
>    drivers/soc/qcom/Kconfig:19: symbol QCOM_COMMAND_DB depends on OF_RESERVED_MEM
>    drivers/of/Kconfig:80: symbol OF_RESERVED_MEM default is visible depending on DMA_CMA
>    kernel/dma/Kconfig:109: symbol DMA_CMA is selected by FB_HYPERV
>    drivers/video/fbdev/Kconfig:2182: symbol FB_HYPERV depends on FB
>    drivers/video/fbdev/Kconfig:12: symbol FB is selected by DRM_KMS_FB_HELPER
>    drivers/gpu/drm/Kconfig:80: symbol DRM_KMS_FB_HELPER depends on DRM_KMS_HELPER
>    For a resolution refer to Documentation/kbuild/kconfig-language.rst
>    subsection "Kconfig recursive dependency limitations"

Ah, this depends on another patch of mine that I have in my randconfig tree, to
replace the 'select FB' in DRM_KMS_FB_HELPER with 'depends on FB'.

Should I resend that patch, or would someone suggest a different fix for
the CONFIG_QCOM_LLCC dependency issue?


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