[linux-next:master 6432/9897] drivers/perf/arm_smmuv3_pmu.c:889:34: warning: unused variable 'smmu_pmu_of_match'

[linux-next:master 6432/9897] drivers/perf/arm_smmuv3_pmu.c:889:34: warning: unused variable 'smmu_pmu_of_match'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   ea586a076e8aa606c59b66d86660590f18354b11
commit: 3f7be43561766b7ad91661580376913c997613d6 [6432/9897] perf/smmuv3: Add devicetree support
config: x86_64-buildonly-randconfig-r001-20220102 (https://download.01.org/0day-ci/archive/20220104/202201041700.01KZEzhb-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 104a827ea6de0cbe0f5faef4407552ede31d165c)
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/next/linux-next.git/commit/?id=3f7be43561766b7ad91661580376913c997613d6
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 3f7be43561766b7ad91661580376913c997613d6
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/perf/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/perf/arm_smmuv3_pmu.c:889:34: warning: unused variable 'smmu_pmu_of_match' [-Wunused-const-variable]
   static const struct of_device_id smmu_pmu_of_match[] = {
                                    ^
   1 warning generated.


vim +/smmu_pmu_of_match +889 drivers/perf/arm_smmuv3_pmu.c

   888	
 > 889	static const struct of_device_id smmu_pmu_of_match[] = {
   890		{ .compatible = "arm,smmu-v3-pmcg" },
   891		{}
   892	};
   893	MODULE_DEVICE_TABLE(of, smmu_pmu_of_match);
   894	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Re: [linux-next:master 6432/9897] drivers/perf/arm_smmuv3_pmu.c:889:34: warning: unused variable 'smmu_pmu_of_match'

[Will Deacon]

On Tue, Jan 04, 2022 at 05:49:36PM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   ea586a076e8aa606c59b66d86660590f18354b11
> commit: 3f7be43561766b7ad91661580376913c997613d6 [6432/9897] perf/smmuv3: Add devicetree support
> config: x86_64-buildonly-randconfig-r001-20220102 (https://download.01.org/0day-ci/archive/20220104/202201041700.01KZEzhb-lkp@intel.com/config)
> compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 104a827ea6de0cbe0f5faef4407552ede31d165c)
> 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/next/linux-next.git/commit/?id=3f7be43561766b7ad91661580376913c997613d6
>         git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
>         git fetch --no-tags linux-next master
>         git checkout 3f7be43561766b7ad91661580376913c997613d6
>         # save the config file to linux build tree
>         mkdir build_dir
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/perf/
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
> 
> All warnings (new ones prefixed by >>):
> 
> >> drivers/perf/arm_smmuv3_pmu.c:889:34: warning: unused variable 'smmu_pmu_of_match' [-Wunused-const-variable]
>    static const struct of_device_id smmu_pmu_of_match[] = {
>                                     ^
>    1 warning generated.
> 
> 
> vim +/smmu_pmu_of_match +889 drivers/perf/arm_smmuv3_pmu.c
> 
>    888	
>  > 889	static const struct of_device_id smmu_pmu_of_match[] = {
>    890		{ .compatible = "arm,smmu-v3-pmcg" },
>    891		{}
>    892	};
>    893	MODULE_DEVICE_TABLE(of, smmu_pmu_of_match);
>    894	

I've fixed this locally with an #ifdef CONFIG_OF around the match table.
I'll push out a branch once I've got on top of the other pending perf
issues.

Will