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From: Krzysztof Kozlowski <krzk@kernel.org>
To: kbuild-all@lists.01.org
Subject: Re: [chanwoo:devfreq-testing 12/16] arceb-elf-ld: tegra30-devfreq.c:undefined reference to `tegra_sku_info'
Date: Tue, 24 Nov 2020 11:11:05 +0100
Message-ID: <20201124101105.GA25587@kozik-lap>
In-Reply-To: <8713de48-df46-4916-968c-13d130c088a3@samsung.com>
List-Id: <oe-kbuild-all.lists.linux.dev>

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On Tue, Nov 24, 2020 at 10:34:53AM +0900, Chanwoo Choi wrote:
> + Krzysztof Kozlowski
> =

> On 11/23/20 8:02 PM, Dmitry Osipenko wrote:
> > 23.11.2020 10:29, Chanwoo Choi =D0=BF=D0=B8=D1=88=D0=B5=D1=82:
> >> Hi Dmitry,
> >>
> >> On 11/14/20 7:16 AM, kernel test robot wrote:
> >>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux=
.git devfreq-testing
> >>> head:   24353caf6d50c7ddccd48435d34f79182c0b3923
> >>> commit: e56035f87752d8663188ca8507099f6c7172f053 [12/16] PM / devfreq=
: tegra30: Support interconnect and OPPs from device-tree
> >>> config: arc-randconfig-c003-20201113 (attached as .config)
> >>> compiler: arceb-elf-gcc (GCC) 9.3.0
> >>> reproduce (this is a W=3D1 build):
> >>>         wget https://protect2.fireeye.com/v1/url?k=3D7ccf28b1-235411a=
b-7ccea3fe-0cc47a6cba04-e2247e2fae4671e2&q=3D1&e=3D1034e496-a416-46d0-8795-=
74cdeb44922c&u=3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fintel%2Flkp-test=
s%2Fmaster%2Fsbin%2Fmake.cross -O ~/bin/make.cross
> >>>         chmod +x ~/bin/make.cross
> >>>         # https://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/lin=
ux.git/commit/?id=3De56035f87752d8663188ca8507099f6c7172f053
> >>>         git remote add chanwoo https://git.kernel.org/pub/scm/linux/k=
ernel/git/chanwoo/linux.git
> >>>         git fetch --no-tags chanwoo devfreq-testing
> >>>         git checkout e56035f87752d8663188ca8507099f6c7172f053
> >>>         # save the attached .config to linux build tree
> >>>         COMPILER_INSTALL_PATH=3D$HOME/0day COMPILER=3Dgcc-9.3.0 make.=
cross ARCH=3Darc =

> >>>
> >>> If you fix the issue, kindly add following tag as appropriate
> >>> Reported-by: kernel test robot <lkp@intel.com>
> >>>
> >>> All errors (new ones prefixed by >>):
> >>>
> >>>    arceb-elf-ld: drivers/devfreq/tegra30-devfreq.o: in function `tegr=
a_devfreq_probe':
> >>>    tegra30-devfreq.c:(.text+0x10a): undefined reference to `tegra_sku=
_info'
> >>
> >>
> >> Do you know about this build issue?
> > =

> > It happens because yours devfreq tree doesn't have the soc/tegra patch
> > which adds a stub for tegra_sku_info. This patch is already queued by
> > Krzysztof Kozlowski [1] and available in linux-next [2]. Hence there is
> > no real problem here, this COMPILE_TEST build issue will be fixed
> > naturally once all the patches will be merged into the Linus' tree.
> =

> Actually before merging all patches to linus git repo, it is problem.
> And if this case, have to make the immutable branch and then send
> the pull request to other maintainer or merge the patches to one git repo.

Chanwoo is right here, it is a problem. The merge result will not be
bisectable (at least under compile testing).

> Hi Krzysztof,
> The devfreq patch depends on patch[1] was already merged to linux-mem-ctr=
l.git.
> Could you make the immutable branch and share it?

Of course, give me few minutes, please.

Best regards,
Krzysztof

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