linux-kernel - drivers/pci/controller/pci-xgene.c:626:34: warning: unused variable 'xgene_pcie_match

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Date:   Fri, 7 Jan 2022 00:36:36 +0800
From:   kernel test robot <lkp@...el.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Bjorn Helgaas <helgaas@...nel.org>,
        Robert Richter <rric@...nel.org>
Subject: drivers/pci/controller/pci-xgene.c:626:34: warning: unused variable
 'xgene_pcie_match_table'

Hi Arnd,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   75acfdb6fd922598a408a0d864486aeb167c1a97
commit: 6e5a1fff9096ecd259dedcbbdc812aa90986a40e PCI: Avoid building empty drivers
date:   10 months ago
config: x86_64-buildonly-randconfig-r001-20220106 (https://download.01.org/0day-ci/archive/20220107/202201070057.wNIXLTxV-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project ca7ffe09dc6e525109e3cd570cc5182ce568be13)
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=6e5a1fff9096ecd259dedcbbdc812aa90986a40e
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 6e5a1fff9096ecd259dedcbbdc812aa90986a40e
        # 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=x86_64 SHELL=/bin/bash drivers/pci/controller/ drivers/scsi/

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/pci-xgene.c:626:34: warning: unused variable 'xgene_pcie_match_table' [-Wunused-const-variable]
   static const struct of_device_id xgene_pcie_match_table[] = {
                                    ^
   1 warning generated.


vim +/xgene_pcie_match_table +626 drivers/pci/controller/pci-xgene.c

5f6b6ccdbe1cdf drivers/pci/host/pci-xgene.c Tanmay Inamdar 2014-10-01  625  
5f6b6ccdbe1cdf drivers/pci/host/pci-xgene.c Tanmay Inamdar 2014-10-01 @626  static const struct of_device_id xgene_pcie_match_table[] = {
5f6b6ccdbe1cdf drivers/pci/host/pci-xgene.c Tanmay Inamdar 2014-10-01  627  	{.compatible = "apm,xgene-pcie",},
5f6b6ccdbe1cdf drivers/pci/host/pci-xgene.c Tanmay Inamdar 2014-10-01  628  	{},
5f6b6ccdbe1cdf drivers/pci/host/pci-xgene.c Tanmay Inamdar 2014-10-01  629  };
5f6b6ccdbe1cdf drivers/pci/host/pci-xgene.c Tanmay Inamdar 2014-10-01  630  

:::::: The code at line 626 was first introduced by commit
:::::: 5f6b6ccdbe1cdfa5aa4347ec5412509b8995db27 PCI: xgene: Add APM X-Gene PCIe driver

:::::: TO: Tanmay Inamdar <tinamdar@....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