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Date:   Thu, 1 Sep 2022 10:00:17 +0200
From:   Maxime Ripard <maxime@cerno.tech>
To:     kernel test robot <lkp@intel.com>
Cc:     "Minghao Chi (CGEL ZTE)" <chi.minghao@zte.com.cn>,
        kbuild-all@lists.01.org, linux-kernel@vger.kernel.org,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Sasha Levin <sashal@kernel.org>
Subject: Re: [stable:linux-5.15.y 9126/9999] ERROR: modpost:
 "devm_drm_of_get_bridge" [drivers/gpu/drm/vc4/vc4.ko] undefined!
Message-ID: <20220901080017.fe4bx2ywuafry6ie@houat>
References: <202209011256.zvBzxcpP-lkp@intel.com>
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On Thu, Sep 01, 2022 at 12:51:57PM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stab=
le.git linux-5.15.y
> head:   1ded0ef2419e8f83a17d65594523ec3aeb2e3d0f
> commit: 3d722c01d628d17a37cf2820195f15cfc9a6a332 [9126/9999] drm/vc4: Use=
 of_device_get_match_data()
> config: parisc-randconfig-c034-20220831 (https://download.01.org/0day-ci/=
archive/20220901/202209011256.zvBzxcpP-lkp@intel.com/config)
> compiler: hppa-linux-gcc (GCC) 12.1.0
> reproduce (this is a W=3D1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbi=
n/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-st=
able.git/commit/?id=3D3d722c01d628d17a37cf2820195f15cfc9a6a332
>         git remote add stable https://git.kernel.org/pub/scm/linux/kernel=
/git/stable/linux-stable.git
>         git fetch --no-tags stable linux-5.15.y
>         git checkout 3d722c01d628d17a37cf2820195f15cfc9a6a332
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         COMPILER_INSTALL_PATH=3D$HOME/0day COMPILER=3Dgcc-12.1.0 make.cro=
ss W=3D1 O=3Dbuild_dir ARCH=3Dparisc SHELL=3D/bin/bash
>=20
> If you fix the issue, kindly add following tag where applicable
> Reported-by: kernel test robot <lkp@intel.com>
>=20
> All errors (new ones prefixed by >>, old ones prefixed by <<):
>=20
> >> ERROR: modpost: "devm_drm_of_get_bridge" [drivers/gpu/drm/vc4/vc4.ko] =
undefined!

I think this is due to stable having backported 87ea95808d53 and
a43dd76bacd0, but missing 59050d7838482

Maxime