linux-kernel - drivers/char/hw_random/npcm-rng.c:166:34: warning: unused variable 'rng_dt

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Message-ID: <202006232136.vz36SNV9%lkp@intel.com>
Date:   Tue, 23 Jun 2020 21:58:39 +0800
From:   kernel test robot <lkp@...el.com>
To:     Tomer Maimon <tmaimon77@...il.com>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Daniel Thompson <daniel.thompson@...aro.org>
Subject: drivers/char/hw_random/npcm-rng.c:166:34: warning: unused variable
 'rng_dt_id'

Hi Tomer,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   dd0d718152e4c65b173070d48ea9dfc06894c3e5
commit: c98429297d8b25a0d9c48d8e1f5237f19412f07b hwrng: npcm - add NPCM RNG driver
date:   9 months ago
config: x86_64-randconfig-r004-20200623 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 1d4c87335d5236ea1f35937e1014980ba961ae34)
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
        git checkout c98429297d8b25a0d9c48d8e1f5237f19412f07b
        # 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/char/hw_random/npcm-rng.c:166:34: warning: unused variable 'rng_dt_id' [-Wunused-const-variable]
   static const struct of_device_id rng_dt_id[] = {
                                    ^
   1 warning generated.

vim +/rng_dt_id +166 drivers/char/hw_random/npcm-rng.c

   165	
 > 166	static const struct of_device_id rng_dt_id[] = {
   167		{ .compatible = "nuvoton,npcm750-rng",  },
   168		{},
   169	};
   170	MODULE_DEVICE_TABLE(of, rng_dt_id);
   171	

---
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" (37856 bytes)