linux-kernel - drivers/iio/adc/ltc2496.c:90:34: warning: unused variable 'ltc2496_of

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Message-ID: <202006280337.23K6AIqC%lkp@intel.com>
Date:   Sun, 28 Jun 2020 03:27:41 +0800
From:   kernel test robot <lkp@...el.com>
To:     Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>
Subject: drivers/iio/adc/ltc2496.c:90:34: warning: unused variable
 'ltc2496_of_match'

Hi Uwe,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4e99b32169e84b4ece5a1d74eb0b7e4ef07866b3
commit: e4c5c4dfaa88e49f33e8c11b52c65c630c0b12a7 iio: adc: new driver to support Linear technology's ltc2496
date:   7 months ago
config: mips-randconfig-r001-20200628 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project a43b99a1e38e2beffb68a6db93f216f511e7fd41)
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-mips-linux-gnu
        git checkout e4c5c4dfaa88e49f33e8c11b52c65c630c0b12a7
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips 

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/iio/adc/ltc2496.c:90:34: warning: unused variable 'ltc2496_of_match' [-Wunused-const-variable]
   static const struct of_device_id ltc2496_of_match[] = {
                                    ^
   1 warning generated.

vim +/ltc2496_of_match +90 drivers/iio/adc/ltc2496.c

    89	
  > 90	static const struct of_device_id ltc2496_of_match[] = {
    91		{ .compatible = "lltc,ltc2496", },
    92		{},
    93	};
    94	MODULE_DEVICE_TABLE(of, ltc2496_of_match);
    95	

---
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" (25257 bytes)