[linux-nvdimm:libnvdimm-fixes 2/3] drivers/dax/super.c:325:6: error: redefinition of 'dax_supported'

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm.git libnvdimm-fixes
head:   d4c5da5049ac27c6ef8f6f98548c3a1ade352d25
commit: e2ec5128254518cae320d5dc631b71b94160f663 [2/3] dm: Call proper helper to determine dax support
config: x86_64-randconfig-a011-20200920 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project f4e554180962aa6bc93678898b6933ea712bde50)
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 x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        git checkout e2ec5128254518cae320d5dc631b71b94160f663
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All errors (new ones prefixed by >>):

>> drivers/dax/super.c:325:6: error: redefinition of 'dax_supported'
   bool dax_supported(struct dax_device *dax_dev, struct block_device *bdev,
        ^
   include/linux/dax.h:162:20: note: previous definition is here
   static inline bool dax_supported(struct dax_device *dax_dev,
                      ^
   drivers/dax/super.c:451:6: warning: no previous prototype for function 'run_dax' [-Wmissing-prototypes]
   void run_dax(struct dax_device *dax_dev)
        ^
   drivers/dax/super.c:451:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void run_dax(struct dax_device *dax_dev)
   ^
   static 
   1 warning and 1 error generated.

# https://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm.git/commit/?id=e2ec5128254518cae320d5dc631b71b94160f663
git remote add linux-nvdimm https://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm.git
git fetch --no-tags linux-nvdimm libnvdimm-fixes
git checkout e2ec5128254518cae320d5dc631b71b94160f663
vim +/dax_supported +325 drivers/dax/super.c

b0686260fecaa9 Dan Williams 2017-01-26  324  
7bf7eac8d64805 Dan Williams 2019-05-16 @325  bool dax_supported(struct dax_device *dax_dev, struct block_device *bdev,
7bf7eac8d64805 Dan Williams 2019-05-16  326  		int blocksize, sector_t start, sector_t len)
7bf7eac8d64805 Dan Williams 2019-05-16  327  {
e2ec5128254518 Jan Kara     2020-09-20  328  	if (!dax_dev)
e2ec5128254518 Jan Kara     2020-09-20  329  		return false;
e2ec5128254518 Jan Kara     2020-09-20  330  
7bf7eac8d64805 Dan Williams 2019-05-16  331  	if (!dax_alive(dax_dev))
7bf7eac8d64805 Dan Williams 2019-05-16  332  		return false;
7bf7eac8d64805 Dan Williams 2019-05-16  333  
7bf7eac8d64805 Dan Williams 2019-05-16  334  	return dax_dev->ops->dax_supported(dax_dev, bdev, blocksize, start, len);
7bf7eac8d64805 Dan Williams 2019-05-16  335  }
e2ec5128254518 Jan Kara     2020-09-20  336  EXPORT_SYMBOL_GPL(dax_supported);
7bf7eac8d64805 Dan Williams 2019-05-16  337  

:::::: The code at line 325 was first introduced by commit
:::::: 7bf7eac8d648057519adb6fce1e31458c902212c dax: Arrange for dax_supported check to span multiple devices

:::::: TO: Dan Williams <dan.j.williams@intel.com>
:::::: CC: Dan Williams <dan.j.williams@intel.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
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