linux-kernel - drivers/pci/controller/pcie-mt7621.c:549:34: warning: unused variable 'mt7621_pcie

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Message-ID: <202201241754.igtHzgHv-lkp@intel.com>
Date:   Mon, 24 Jan 2022 17:58:44 +0800
From:   kernel test robot <lkp@...el.com>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: drivers/pci/controller/pcie-mt7621.c:549:34: warning: unused
 variable 'mt7621_pcie_ids'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   dd81e1c7d5fb126e5fbc5c9e334d7b3ec29a16a0
commit: 87c71931633bd15e9cfd51d4a4d9cd685e8cdb55 Merge branch 'pci/driver-cleanup'
date:   11 days ago
config: mips-randconfig-r031-20220124 (https://download.01.org/0day-ci/archive/20220124/202201241754.igtHzgHv-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 7b3d30728816403d1fd73cc5082e9fb761262bce)
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=87c71931633bd15e9cfd51d4a4d9cd685e8cdb55
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 87c71931633bd15e9cfd51d4a4d9cd685e8cdb55
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/pci/controller/

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/pci/controller/pcie-mt7621.c:112:20: warning: unused function 'pcie_rmw' [-Wunused-function]
   static inline void pcie_rmw(struct mt7621_pcie *pcie, u32 reg, u32 clr, u32 set)
                      ^
>> drivers/pci/controller/pcie-mt7621.c:549:34: warning: unused variable 'mt7621_pcie_ids' [-Wunused-const-variable]
   static const struct of_device_id mt7621_pcie_ids[] = {
                                    ^
   2 warnings generated.


vim +/mt7621_pcie_ids +549 drivers/pci/controller/pcie-mt7621.c

03f152e31f4ae89 drivers/staging/mt7621-pci/pci-mt7621.c John Crispin  2018-03-15  548  
4793895f597d42e drivers/pci/controller/pcie-mt7621.c    Bjorn Helgaas 2021-12-22 @549  static const struct of_device_id mt7621_pcie_ids[] = {
03f152e31f4ae89 drivers/staging/mt7621-pci/pci-mt7621.c John Crispin  2018-03-15  550  	{ .compatible = "mediatek,mt7621-pci" },
03f152e31f4ae89 drivers/staging/mt7621-pci/pci-mt7621.c John Crispin  2018-03-15  551  	{},
03f152e31f4ae89 drivers/staging/mt7621-pci/pci-mt7621.c John Crispin  2018-03-15  552  };
4793895f597d42e drivers/pci/controller/pcie-mt7621.c    Bjorn Helgaas 2021-12-22  553  MODULE_DEVICE_TABLE(of, mt7621_pcie_ids);
03f152e31f4ae89 drivers/staging/mt7621-pci/pci-mt7621.c John Crispin  2018-03-15  554  

:::::: The code at line 549 was first introduced by commit
:::::: 4793895f597d42eb54a0f54711b61263b6a8dd03 PCI: mt7621: Rename mt7621_pci_ to mt7621_pcie_

:::::: TO: Bjorn Helgaas <bhelgaas@...gle.com>
:::::: CC: Bjorn Helgaas <bhelgaas@...gle.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org