linux-kernel - drivers/scsi/ufs/ufs-exynos.c:1268:34: warning: unused variable 'exynos_ufs_of

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Message-ID: <202103160403.5g8fgbRT-lkp@intel.com>
Date:   Tue, 16 Mar 2021 04:24:09 +0800
From:   kernel test robot <lkp@...el.com>
To:     Alim Akhtar <alim.akhtar@...sung.com>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Subject: drivers/scsi/ufs/ufs-exynos.c:1268:34: warning: unused variable
 'exynos_ufs_of_match'

Hi Alim,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1e28eed17697bcf343c6743f0028cc3b5dd88bf0
commit: d31503fe395d1d7e17b85eb7b291cc1a4bff2671 scsi: ufs: Allow exynos ufs driver to build as module
date:   9 months ago
config: x86_64-randconfig-a002-20210316 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project a28facba1ccdc957f386b7753f4958307f1bfde8)
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 x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d31503fe395d1d7e17b85eb7b291cc1a4bff2671
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout d31503fe395d1d7e17b85eb7b291cc1a4bff2671
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All warnings (new ones prefixed by >>):

>> drivers/scsi/ufs/ufs-exynos.c:1268:34: warning: unused variable 'exynos_ufs_of_match' [-Wunused-const-variable]
   static const struct of_device_id exynos_ufs_of_match[] = {
                                    ^
   1 warning generated.


vim +/exynos_ufs_of_match +1268 drivers/scsi/ufs/ufs-exynos.c

55f4b1f73631a0 Alim Akhtar 2020-05-28  1267  
55f4b1f73631a0 Alim Akhtar 2020-05-28 @1268  static const struct of_device_id exynos_ufs_of_match[] = {
55f4b1f73631a0 Alim Akhtar 2020-05-28  1269  	{ .compatible = "samsung,exynos7-ufs",
55f4b1f73631a0 Alim Akhtar 2020-05-28  1270  	  .data	      = &exynos_ufs_drvs },
55f4b1f73631a0 Alim Akhtar 2020-05-28  1271  	{},
55f4b1f73631a0 Alim Akhtar 2020-05-28  1272  };
55f4b1f73631a0 Alim Akhtar 2020-05-28  1273  

:::::: The code at line 1268 was first introduced by commit
:::::: 55f4b1f73631a0817717fe6e98517de51b4c3527 scsi: ufs: ufs-exynos: Add UFS host support for Exynos SoCs

:::::: TO: Alim Akhtar <alim.akhtar@...sung.com>
:::::: CC: Martin K. Petersen <martin.petersen@...cle.com>

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

Download attachment ".config.gz" of type "application/gzip" (39897 bytes)