linux-kernel - drivers/media/platform/marvell/mmp-driver.c:364:34: warning: unused variable 'mmpcam_of

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Message-ID: <202210221523.JsW4GDfE-lkp@intel.com>
Date:   Sat, 22 Oct 2022 15:28:33 +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/marvell/mmp-driver.c:364:34: warning: unused
 variable 'mmpcam_of_match'

Hi Mauro,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4da34b7d175dc99b8befebd69e96546c960d526c
commit: dc7bbea90075b57772e9a28043061bf71d96f06f media: platform: rename marvell-ccic/ to marvell/
date:   7 months ago
config: mips-randconfig-c004-20221022
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920)
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=dc7bbea90075b57772e9a28043061bf71d96f06f
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout dc7bbea90075b57772e9a28043061bf71d96f06f
        # 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/

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/marvell/mmp-driver.c:364:34: warning: unused variable 'mmpcam_of_match' [-Wunused-const-variable]
   static const struct of_device_id mmpcam_of_match[] = {
                                    ^
   1 warning generated.


vim +/mmpcam_of_match +364 drivers/media/platform/marvell/mmp-driver.c

bb0a896e3d5083 drivers/media/video/marvell-ccic/mmp-driver.c    Jonathan Corbet 2011-12-30  363  
83c40e6611ec1e drivers/media/platform/marvell-ccic/mmp-driver.c Lubomir Rintel  2019-05-28 @364  static const struct of_device_id mmpcam_of_match[] = {
83c40e6611ec1e drivers/media/platform/marvell-ccic/mmp-driver.c Lubomir Rintel  2019-05-28  365  	{ .compatible = "marvell,mmp2-ccic", },
83c40e6611ec1e drivers/media/platform/marvell-ccic/mmp-driver.c Lubomir Rintel  2019-05-28  366  	{},
83c40e6611ec1e drivers/media/platform/marvell-ccic/mmp-driver.c Lubomir Rintel  2019-05-28  367  };
08aac0e32fe44b drivers/media/platform/marvell-ccic/mmp-driver.c Lubomir Rintel  2019-07-22  368  MODULE_DEVICE_TABLE(of, mmpcam_of_match);
67a8dbbc4e04cd drivers/media/video/marvell-ccic/mmp-driver.c    Jonathan Corbet 2011-06-11  369  

:::::: The code at line 364 was first introduced by commit
:::::: 83c40e6611ec1e548ece34f6940f516333abc16a media: marvell-ccic/mmp: add devicetree support

:::::: TO: Lubomir Rintel <lkundrak@...sk>
:::::: CC: Mauro Carvalho Chehab <mchehab+samsung@...nel.org>

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

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