linux-kernel - drivers/mfd/atc260x-i2c.c:45:34: warning: unused variable 'atc260x_i2c_of

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Date:   Thu, 21 Apr 2022 22:15:21 +0800
From:   kernel test robot <lkp@...el.com>
To:     Wei Yongjun <weiyongjun1@...wei.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Lee Jones <lee.jones@...aro.org>,
        Cristian Ciocaltea <cristian.ciocaltea@...il.com>
Subject: drivers/mfd/atc260x-i2c.c:45:34: warning: unused variable
 'atc260x_i2c_of_match'

Hi Wei,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   b253435746d9a4a701b5f09211b9c14d3370d0da
commit: c0d46b89ddeae419ee3ee8679fe6836119a83e14 mfd: Make symbol 'atc260x_i2c_of_match' static
date:   1 year ago
config: x86_64-randconfig-a005 (https://download.01.org/0day-ci/archive/20220421/202204212213.zQ5mP49k-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project bac6cd5bf85669e3376610cfc4c4f9ca015e7b9b)
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=c0d46b89ddeae419ee3ee8679fe6836119a83e14
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout c0d46b89ddeae419ee3ee8679fe6836119a83e14
        # 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=x86_64 SHELL=/bin/bash drivers/gpu/drm/i915/gvt/ drivers/mfd/

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/mfd/atc260x-i2c.c:45:34: warning: unused variable 'atc260x_i2c_of_match' [-Wunused-const-variable]
   static const struct of_device_id atc260x_i2c_of_match[] = {
                                    ^
   1 warning generated.


vim +/atc260x_i2c_of_match +45 drivers/mfd/atc260x-i2c.c

    44	
  > 45	static const struct of_device_id atc260x_i2c_of_match[] = {
    46		{ .compatible = "actions,atc2603c", .data = (void *)ATC2603C },
    47		{ .compatible = "actions,atc2609a", .data = (void *)ATC2609A },
    48		{ }
    49	};
    50	MODULE_DEVICE_TABLE(of, atc260x_i2c_of_match);
    51	

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