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From: Michael Ellerman <mpe@ellerman.id.au>
To: Arnd Bergmann <arnd@arndb.de>, kernel test robot <lkp@intel.com>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
 linuxppc-dev@lists.ozlabs.org
Subject: Re: [powerpc:next-test 21/79]
 arch/powerpc/platforms/powermac/feature.c:137:19: error: unused function
 'simple_feature_tweak'
In-Reply-To: <6173828b-183c-490d-abca-bdc72221bafc@app.fastmail.com>
References: <202308181501.AR5HMDWC-lkp@intel.com>
 <6173828b-183c-490d-abca-bdc72221bafc@app.fastmail.com>
Date: Sat, 19 Aug 2023 17:04:07 +1000
Message-ID: <87zg2nv7h4.fsf@mail.lhotse>
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"Arnd Bergmann" <arnd@arndb.de> writes:
> On Fri, Aug 18, 2023, at 09:59, kernel test robot wrote:
>> tree:   
>> https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git 
>> next-test
>> head:   c56963d48343b50998bacc6df949217c950163e3
>> commit: 54f30b83fe627453082f15d83d7820b28b2d24bb [21/79] powerpc: 
>> address missing-prototypes warnings
>
>>
>> If you fix the issue in a separate patch/commit (i.e. not just a new 
>> version of
>> the same patch/commit), kindly add following tags
>> | Reported-by: kernel test robot <lkp@intel.com>
>> | Closes: 
>> https://lore.kernel.org/oe-kbuild-all/202308181501.AR5HMDWC-lkp@intel.com/
>>
>> All errors (new ones prefixed by >>):
>>
>>>> arch/powerpc/platforms/powermac/feature.c:137:19: error: unused function 'simple_feature_tweak' [-Werror,-Wunused-function]
>>    static inline int simple_feature_tweak(struct device_node *node, int type,
>>                      ^
>
> This looks unrelated to my patch, but is easily addressed by marking
> the function __maybe_unused. The warning is triggered by clang specific
> behavior that treats inline functions in .c files differently, see
> 6863f5643dd7 ("kbuild: allow Clang to find unused static inline functions
> for W=1 build")

It looks like it can just move inside the nearby ifdef. Will send a
patch.

cheers