linux-kernel - Re: [stable:linux-5.15.y 9126/9999] ERROR: modpost: "devm_drm_of_get_bridge" [drivers/gpu/drm/vc4/vc4.ko] undefined!

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Date:   Thu, 1 Sep 2022 10:48:33 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     kernel test robot <lkp@...el.com>,
        "Minghao Chi (CGEL ZTE)" <chi.minghao@....com.cn>,
        kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Sasha Levin <sashal@...nel.org>
Subject: Re: [stable:linux-5.15.y 9126/9999] ERROR: modpost:
 "devm_drm_of_get_bridge" [drivers/gpu/drm/vc4/vc4.ko] undefined!

On Thu, Sep 01, 2022 at 10:39:36AM +0200, Greg Kroah-Hartman wrote:
> On Thu, Sep 01, 2022 at 10:00:17AM +0200, Maxime Ripard wrote:
> > 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-stable.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=1 build):
> > >         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> > >         chmod +x ~/bin/make.cross
> > >         # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?id=3d722c01d628d17a37cf2820195f15cfc9a6a332
> > >         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=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=parisc SHELL=/bin/bash
> > > 
> > > If you fix the issue, kindly add following tag where applicable
> > > Reported-by: kernel test robot <lkp@...el.com>
> > > 
> > > All errors (new ones prefixed by >>, old ones prefixed by <<):
> > > 
> > > >> 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
> 
> I see no such commit as "59050d7838482" in Linus's tree, what are you
> referring to exactly here?

Sorry, I meant 59050d783848, I'm not sure how the final 2 ended up there

Maxime