linux-kernel - drivers/gpu/drm/rockchip/analogix_dp-rockchip.c:457:34: warning: unused variable 'rockchip_dp_dt

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Date:   Wed, 17 Mar 2021 05:52:46 +0800
From:   kernel test robot <lkp@...el.com>
To:     Robin Murphy <robin.murphy@....com>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org, Joerg Roedel <jroedel@...e.de>
Subject: drivers/gpu/drm/rockchip/analogix_dp-rockchip.c:457:34: warning:
 unused variable 'rockchip_dp_dt_ids'

Hi Robin,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1df27313f50a57497c1faeb6a6ae4ca939c85a7d
commit: b4ceb4a5359ed1c9ba4a20acf3a70d4bbead3248 iommu: Tidy up Kconfig for SoC IOMMUs
date:   8 months ago
config: x86_64-randconfig-a013-20210317 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 50c7504a93fdb90c26870db8c8ea7add895c7725)
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b4ceb4a5359ed1c9ba4a20acf3a70d4bbead3248
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout b4ceb4a5359ed1c9ba4a20acf3a70d4bbead3248
        # 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/gpu/drm/rockchip/analogix_dp-rockchip.c:457:34: warning: unused variable 'rockchip_dp_dt_ids' [-Wunused-const-variable]
   static const struct of_device_id rockchip_dp_dt_ids[] = {
                                    ^
   1 warning generated.
--
>> drivers/gpu/drm/rockchip/rockchip_vop_reg.c:1029:34: warning: unused variable 'vop_driver_dt_match' [-Wunused-const-variable]
   static const struct of_device_id vop_driver_dt_match[] = {
                                    ^
   1 warning generated.


vim +/rockchip_dp_dt_ids +457 drivers/gpu/drm/rockchip/analogix_dp-rockchip.c

d9c900b0270a18 Yakir Yang 2016-06-29  456  
9e32e16e9e989f Yakir Yang 2016-03-29 @457  static const struct of_device_id rockchip_dp_dt_ids[] = {
d9c900b0270a18 Yakir Yang 2016-06-29  458  	{.compatible = "rockchip,rk3288-dp", .data = &rk3288_dp },
82872e42bb1501 Yakir Yang 2016-06-29  459  	{.compatible = "rockchip,rk3399-edp", .data = &rk3399_edp },
9e32e16e9e989f Yakir Yang 2016-03-29  460  	{}
9e32e16e9e989f Yakir Yang 2016-03-29  461  };
9e32e16e9e989f Yakir Yang 2016-03-29  462  MODULE_DEVICE_TABLE(of, rockchip_dp_dt_ids);
9e32e16e9e989f Yakir Yang 2016-03-29  463  

:::::: The code at line 457 was first introduced by commit
:::::: 9e32e16e9e989f2c4a11b377c5ed3e1c7be16cfb drm: rockchip: dp: add rockchip platform dp driver

:::::: TO: Yakir Yang <ykk@...k-chips.com>
:::::: CC: Yakir Yang <ykk@...k-chips.com>

---
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" (38293 bytes)