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

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Date:   Tue, 28 Dec 2021 14:01:22 +0800
From:   kernel test robot <lkp@...el.com>
To:     Alim Akhtar <alim.akhtar@...sung.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        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:   a8ad9a2434dc7967ab285437f443cae633b6fc1c
commit: d31503fe395d1d7e17b85eb7b291cc1a4bff2671 scsi: ufs: Allow exynos ufs driver to build as module
date:   1 year, 6 months ago
config: hexagon-randconfig-r032-20211228 (https://download.01.org/0day-ci/archive/20211228/202112281324.w3VTX6oh-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 7171af744543433ac75b232eb7dfdaef7efd4d7a)
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/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 config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/scsi/ufs/

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.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for FRAME_POINTER
   Depends on DEBUG_KERNEL && (M68K || UML || SUPERH) || ARCH_WANT_FRAME_POINTERS
   Selected by
   - LOCKDEP && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT && !MIPS && !PPC && !ARM && !S390 && !MICROBLAZE && !ARC && !X86


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