linux-kernel - drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c:1175:34: warning: unused variable 'c8sectpfe

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Message-ID: <202207280016.r8tOLF4N-lkp@intel.com>
Date:   Thu, 28 Jul 2022 00:17:53 +0800
From:   kernel test robot <lkp@...el.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org
Subject: drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c:1175:34:
 warning: unused variable 'c8sectpfe_match'

Hi Mauro,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   39c3c396f8131f3db454c80e0fcfcdc54ed9ec01
commit: e7b8153e2a4f0c9c8d1450aa7328d54ea64fe8b2 media: platform: place stm32/ and sti/ under st/ dir
date:   4 months ago
config: mips-buildonly-randconfig-r001-20220727 (https://download.01.org/0day-ci/archive/20220728/202207280016.r8tOLF4N-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 8dfaecc4c24494337933aff9d9166486ca0949f1)
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
        # install mips cross compiling tool for clang build
        # apt-get install binutils-mipsel-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e7b8153e2a4f0c9c8d1450aa7328d54ea64fe8b2
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout e7b8153e2a4f0c9c8d1450aa7328d54ea64fe8b2
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/media/platform/ drivers/tty/serial/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c:1175:34: warning: unused variable 'c8sectpfe_match' [-Wunused-const-variable]
   static const struct of_device_id c8sectpfe_match[] = {
                                    ^
   1 warning generated.


vim +/c8sectpfe_match +1175 drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c

c5f5d0f99794cfb drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c Peter Griffin 2015-07-30  1174  
c5f5d0f99794cfb drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c Peter Griffin 2015-07-30 @1175  static const struct of_device_id c8sectpfe_match[] = {
c5f5d0f99794cfb drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c Peter Griffin 2015-07-30  1176  	{ .compatible = "st,stih407-c8sectpfe" },
c5f5d0f99794cfb drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c Peter Griffin 2015-07-30  1177  	{ /* sentinel */ },
c5f5d0f99794cfb drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c Peter Griffin 2015-07-30  1178  };
c5f5d0f99794cfb drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c Peter Griffin 2015-07-30  1179  MODULE_DEVICE_TABLE(of, c8sectpfe_match);
c5f5d0f99794cfb drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c Peter Griffin 2015-07-30  1180  

:::::: The code at line 1175 was first introduced by commit
:::::: c5f5d0f99794cfb675ecacfe37a1b33b352b9752 [media] c8sectpfe: STiH407/10 Linux DVB demux support

:::::: TO: Peter Griffin <peter.griffin@...aro.org>
:::::: CC: Mauro Carvalho Chehab <mchehab@....samsung.com>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp