linux-kernel - drivers/gpu/drm/rockchip/rockchip_vop2_reg.c:248:34: warning: unused variable 'vop2_dt

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Message-ID: <202301051647.nGVktsbj-lkp@intel.com>
Date:   Thu, 5 Jan 2023 16:20:18 +0800
From:   kernel test robot <lkp@...el.com>
To:     Andy Yan <andy.yan@...k-chips.com>
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        linux-kernel@...r.kernel.org, Heiko Stuebner <heiko@...ech.de>,
        Sascha Hauer <s.hauer@...gutronix.de>
Subject: drivers/gpu/drm/rockchip/rockchip_vop2_reg.c:248:34: warning: unused
 variable 'vop2_dt_match'

Hi Andy,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   41c03ba9beea760bd2d2ac9250b09a2e192da2dc
commit: 604be85547ce4d61b89292d2f9a78c721b778c16 drm/rockchip: Add VOP2 driver
date:   8 months ago
config: hexagon-randconfig-r006-20230105
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 8d9828ef5aa9688500657d36cd2aefbe12bbd162)
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=604be85547ce4d61b89292d2f9a78c721b778c16
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 604be85547ce4d61b89292d2f9a78c721b778c16
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/gpu/drm/rockchip/

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

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/rockchip/rockchip_vop2_reg.c:248:34: warning: unused variable 'vop2_dt_match' [-Wunused-const-variable]
   static const struct of_device_id vop2_dt_match[] = {
                                    ^
   1 warning generated.


vim +/vop2_dt_match +248 drivers/gpu/drm/rockchip/rockchip_vop2_reg.c

   247	
 > 248	static const struct of_device_id vop2_dt_match[] = {
   249		{
   250			.compatible = "rockchip,rk3566-vop",
   251			.data = &rk3566_vop,
   252		}, {
   253			.compatible = "rockchip,rk3568-vop",
   254			.data = &rk3568_vop,
   255		}, {
   256		},
   257	};
   258	MODULE_DEVICE_TABLE(of, vop2_dt_match);
   259	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

View attachment "config" of type "text/plain" (118852 bytes)