linux-kernel - drivers/acpi/acpi_pcc.c:34:22: sparse: sparse: symbol 'pcc_ctx' was not declared. Should it be static?

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Message-ID: <202201122308.6u2N4BuL-lkp@intel.com>
Date:   Wed, 12 Jan 2022 23:18:49 +0800
From:   kernel test robot <lkp@...el.com>
To:     Sudeep Holla <sudeep.holla@....com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        "Rafael J. Wysocki" <rjw@...ysocki.net>
Subject: drivers/acpi/acpi_pcc.c:34:22: sparse: sparse: symbol 'pcc_ctx' was
 not declared. Should it be static?

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   daadb3bd0e8d3e317e36bc2c1542e86c528665e5
commit: 77e2a04745ff8e391ad402e2d2d1157a5d3a7ebc ACPI: PCC: Implement OperationRegion handler for the PCC Type 3 subtype
date:   8 days ago
config: i386-randconfig-s002 (https://download.01.org/0day-ci/archive/20220112/202201122308.6u2N4BuL-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=77e2a04745ff8e391ad402e2d2d1157a5d3a7ebc
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 77e2a04745ff8e391ad402e2d2d1157a5d3a7ebc
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/acpi/

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


sparse warnings: (new ones prefixed by >>)
>> drivers/acpi/acpi_pcc.c:34:22: sparse: sparse: symbol 'pcc_ctx' was not declared. Should it be static?

vim +/pcc_ctx +34 drivers/acpi/acpi_pcc.c

    33	
  > 34	struct acpi_pcc_info pcc_ctx;
    35	

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