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SubjectRe: [PATCH v3 07/11] power: supply: core: tabularize HWMON temperature labels
On Sat, Apr 4, 2020 at 6:53 PM kbuild test robot <lkp@intel.com> wrote:
>
> Hi "Michał,
>
> I love your patch! Perhaps something to improve:
>
> [auto build test WARNING on power-supply/for-next]
> [also build test WARNING on hwmon/hwmon-next linus/master v5.6 next-20200404]
> [if your patch is applied to the wrong git tree, please drop us a note to help
> improve the system. BTW, we also suggest to use '--base' option to specify the
> base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
>
> url: https://github.com/0day-ci/linux/commits/Micha-Miros-aw/extensions-and-fixes/20200405-044024
> base: https://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply.git for-next
> config: x86_64-randconfig-b002-20200405 (attached as .config)
> compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 62f3a9650a9f289a07a5f480764fb655178c2334)
> reproduce:
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # save the attached .config to linux build tree
> COMPILER=clang make.cross ARCH=x86_64
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kbuild test robot <lkp@intel.com>
>
> All warnings (new ones prefixed by >>):
>
> >> drivers/power/supply/power_supply_hwmon.o: warning: objtool: power_supply_hwmon_read_string() falls through to next function power_supply_hwmon_write()

I'm guessing this is from the unreachable:
https://github.com/0day-ci/linux/commit/b8b2d14ca46ca54257f55c9af58ea25695b9ee36
I'll need to play with this some more as I couldn't reproduce with a
simplified test case, but looks like a compiler bug. Filed
https://github.com/ClangBuiltLinux/linux/issues/978 for me to track.

--
Thanks,
~Nick Desaulniers

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