linux-kernel - [mcgrof-next:20210916-firmware-builtin-v2 1565/2476] fs/smbfs_client/cifsroot.c:83:12: warning: no previous prototype for function 'cifs_root

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Message-ID: <202201041758.okbqhT2i-lkp@intel.com>
Date:   Tue, 4 Jan 2022 17:29:12 +0800
From:   kernel test robot <lkp@...el.com>
To:     Steve French <stfrench@...rosoft.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Ronnie Sahlberg <lsahlber@...hat.com>
Subject: [mcgrof-next:20210916-firmware-builtin-v2 1565/2476]
 fs/smbfs_client/cifsroot.c:83:12: warning: no previous prototype for
 function 'cifs_root_data'

Hi Steve,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git 20210916-firmware-builtin-v2
head:   f69194f4bcf5b301f2d169b2f036c0da4b642e53
commit: b4a8c8f8fa8b7b86bb62257fbb27e7bde58ac97e [1565/2476] cifs: rename fs/cifs directory to fs/smbfs_client
config: x86_64-randconfig-a003-20210928 (https://download.01.org/0day-ci/archive/20220104/202201041758.okbqhT2i-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project dc6e8dfdfe7efecfda318d43a06fae18b40eb498)
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/mcgrof/linux-next.git/commit/?id=b4a8c8f8fa8b7b86bb62257fbb27e7bde58ac97e
        git remote add mcgrof-next https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git
        git fetch --no-tags mcgrof-next 20210916-firmware-builtin-v2
        git checkout b4a8c8f8fa8b7b86bb62257fbb27e7bde58ac97e
        # 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 fs/smbfs_client/

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 >>):

>> fs/smbfs_client/cifsroot.c:83:12: warning: no previous prototype for function 'cifs_root_data' [-Wmissing-prototypes]
   int __init cifs_root_data(char **dev, char **opts)
              ^
   fs/smbfs_client/cifsroot.c:83:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int __init cifs_root_data(char **dev, char **opts)
   ^
   static 
   1 warning generated.


vim +/cifs_root_data +83 fs/smbfs_client/cifsroot.c

8eecd1c2e5bc73 fs/cifs/cifsroot.c Paulo Alcantara (SUSE  2019-07-16  82) 
8eecd1c2e5bc73 fs/cifs/cifsroot.c Paulo Alcantara (SUSE  2019-07-16 @83) int __init cifs_root_data(char **dev, char **opts)

:::::: The code at line 83 was first introduced by commit
:::::: 8eecd1c2e5bc73d33f3a544751305679dbf88eb4 cifs: Add support for root file systems

:::::: TO: Paulo Alcantara (SUSE) <paulo@...lo.ac>
:::::: CC: Steve French <stfrench@...rosoft.com>

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