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Message-ID: <202102041208.QKNa0Tiw-lkp@intel.com>
Date:   Thu, 4 Feb 2021 12:22:35 +0800
From:   kernel test robot <lkp@...el.com>
To:     Yang Li <yang.lee@...ux.alibaba.com>, mark@...heh.com
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        jlbec@...lplan.org, joseph.qi@...ux.alibaba.com,
        ocfs2-devel@....oracle.com, linux-kernel@...r.kernel.org,
        Yang Li <yang.lee@...ux.alibaba.com>
Subject: Re: [PATCH] ocfs2: Remove unneeded return variable

Hi Yang,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.11-rc6 next-20210125]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Yang-Li/ocfs2-Remove-unneeded-return-variable/20210204-111516
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 61556703b610a104de324e4f061dc6cf7b218b46
config: riscv-randconfig-r023-20210203 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 275c6af7d7f1ed63a03d05b4484413e447133269)
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 riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://github.com/0day-ci/linux/commit/5bb80175fa7cb498c4ed06c376ea16b672477df7
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Yang-Li/ocfs2-Remove-unneeded-return-variable/20210204-111516
        git checkout 5bb80175fa7cb498c4ed06c376ea16b672477df7
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 

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

All errors (new ones prefixed by >>):

>> fs/ocfs2/stack_o2cb.c:69:2: error: use of undeclared identifier 'o2dlm_flags'
           map_flag(DLM_LKF_NOQUEUE, LKM_NOQUEUE);
           ^
   fs/ocfs2/stack_o2cb.c:65:3: note: expanded from macro 'map_flag'
                   o2dlm_flags |= (_o2dlm);        \
                   ^
   fs/ocfs2/stack_o2cb.c:70:2: error: use of undeclared identifier 'o2dlm_flags'
           map_flag(DLM_LKF_CANCEL, LKM_CANCEL);
           ^
   fs/ocfs2/stack_o2cb.c:65:3: note: expanded from macro 'map_flag'
                   o2dlm_flags |= (_o2dlm);        \
                   ^
   fs/ocfs2/stack_o2cb.c:71:2: error: use of undeclared identifier 'o2dlm_flags'
           map_flag(DLM_LKF_CONVERT, LKM_CONVERT);
           ^
   fs/ocfs2/stack_o2cb.c:65:3: note: expanded from macro 'map_flag'
                   o2dlm_flags |= (_o2dlm);        \
                   ^
   fs/ocfs2/stack_o2cb.c:72:2: error: use of undeclared identifier 'o2dlm_flags'
           map_flag(DLM_LKF_VALBLK, LKM_VALBLK);
           ^
   fs/ocfs2/stack_o2cb.c:65:3: note: expanded from macro 'map_flag'
                   o2dlm_flags |= (_o2dlm);        \
                   ^
   fs/ocfs2/stack_o2cb.c:73:2: error: use of undeclared identifier 'o2dlm_flags'
           map_flag(DLM_LKF_IVVALBLK, LKM_INVVALBLK);
           ^
   fs/ocfs2/stack_o2cb.c:65:3: note: expanded from macro 'map_flag'
                   o2dlm_flags |= (_o2dlm);        \
                   ^
   fs/ocfs2/stack_o2cb.c:74:2: error: use of undeclared identifier 'o2dlm_flags'
           map_flag(DLM_LKF_ORPHAN, LKM_ORPHAN);
           ^
   fs/ocfs2/stack_o2cb.c:65:3: note: expanded from macro 'map_flag'
                   o2dlm_flags |= (_o2dlm);        \
                   ^
   fs/ocfs2/stack_o2cb.c:75:2: error: use of undeclared identifier 'o2dlm_flags'
           map_flag(DLM_LKF_FORCEUNLOCK, LKM_FORCE);
           ^
   fs/ocfs2/stack_o2cb.c:65:3: note: expanded from macro 'map_flag'
                   o2dlm_flags |= (_o2dlm);        \
                   ^
   fs/ocfs2/stack_o2cb.c:76:2: error: use of undeclared identifier 'o2dlm_flags'
           map_flag(DLM_LKF_TIMEOUT, LKM_TIMEOUT);
           ^
   fs/ocfs2/stack_o2cb.c:65:3: note: expanded from macro 'map_flag'
                   o2dlm_flags |= (_o2dlm);        \
                   ^
   fs/ocfs2/stack_o2cb.c:77:2: error: use of undeclared identifier 'o2dlm_flags'
           map_flag(DLM_LKF_LOCAL, LKM_LOCAL);
           ^
   fs/ocfs2/stack_o2cb.c:65:3: note: expanded from macro 'map_flag'
                   o2dlm_flags |= (_o2dlm);        \
                   ^
   9 errors generated.


vim +/o2dlm_flags +69 fs/ocfs2/stack_o2cb.c

e3dad42bf993a0 Joel Becker 2008-02-01  61  
e3dad42bf993a0 Joel Becker 2008-02-01  62  #define map_flag(_generic, _o2dlm)		\
e3dad42bf993a0 Joel Becker 2008-02-01  63  	if (flags & (_generic)) {		\
e3dad42bf993a0 Joel Becker 2008-02-01  64  		flags &= ~(_generic);		\
e3dad42bf993a0 Joel Becker 2008-02-01  65  		o2dlm_flags |= (_o2dlm);	\
e3dad42bf993a0 Joel Becker 2008-02-01  66  	}
e3dad42bf993a0 Joel Becker 2008-02-01  67  static int flags_to_o2dlm(u32 flags)
e3dad42bf993a0 Joel Becker 2008-02-01  68  {
e3dad42bf993a0 Joel Becker 2008-02-01 @69  	map_flag(DLM_LKF_NOQUEUE, LKM_NOQUEUE);
e3dad42bf993a0 Joel Becker 2008-02-01  70  	map_flag(DLM_LKF_CANCEL, LKM_CANCEL);
e3dad42bf993a0 Joel Becker 2008-02-01  71  	map_flag(DLM_LKF_CONVERT, LKM_CONVERT);
e3dad42bf993a0 Joel Becker 2008-02-01  72  	map_flag(DLM_LKF_VALBLK, LKM_VALBLK);
e3dad42bf993a0 Joel Becker 2008-02-01  73  	map_flag(DLM_LKF_IVVALBLK, LKM_INVVALBLK);
e3dad42bf993a0 Joel Becker 2008-02-01  74  	map_flag(DLM_LKF_ORPHAN, LKM_ORPHAN);
e3dad42bf993a0 Joel Becker 2008-02-01  75  	map_flag(DLM_LKF_FORCEUNLOCK, LKM_FORCE);
e3dad42bf993a0 Joel Becker 2008-02-01  76  	map_flag(DLM_LKF_TIMEOUT, LKM_TIMEOUT);
e3dad42bf993a0 Joel Becker 2008-02-01  77  	map_flag(DLM_LKF_LOCAL, LKM_LOCAL);
e3dad42bf993a0 Joel Becker 2008-02-01  78  
e3dad42bf993a0 Joel Becker 2008-02-01  79  	/* map_flag() should have cleared every flag passed in */
e3dad42bf993a0 Joel Becker 2008-02-01  80  	BUG_ON(flags != 0);
e3dad42bf993a0 Joel Becker 2008-02-01  81  
5bb80175fa7cb4 Yang Li     2021-02-04  82  	return 0;
e3dad42bf993a0 Joel Becker 2008-02-01  83  }
e3dad42bf993a0 Joel Becker 2008-02-01  84  #undef map_flag
e3dad42bf993a0 Joel Becker 2008-02-01  85  

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

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