[linux-nvdimm:libnvdimm-for-next 6/15] drivers/md/dm-table.c:897:9: error: implicit declaration of function 'dax_synchronous'; did you mean 'device_synchronous'?

[linux-nvdimm:libnvdimm-for-next 6/15] drivers/md/dm-table.c:897:9: error: implicit declaration of function 'dax_synchronous'; did you mean 'device_synchronous'?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm.git libnvdimm-for-next
head:   3b6047778c09037615e7b919c922081ef1a37a7f
commit: 38887edec2472179cc79bb45034731f5f816f064 [6/15] dm: enable synchronous dax
config: parisc-c3000_defconfig (attached as .config)
compiler: hppa-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 38887edec2472179cc79bb45034731f5f816f064
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=parisc 

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

All errors (new ones prefixed by >>):

   drivers/md/dm-table.c: In function 'device_synchronous':
>> drivers/md/dm-table.c:897:9: error: implicit declaration of function 'dax_synchronous'; did you mean 'device_synchronous'? [-Werror=implicit-function-declaration]
     return dax_synchronous(dev->dax_dev);
            ^~~~~~~~~~~~~~~
            device_synchronous
   drivers/md/dm-table.c: In function 'dm_table_set_restrictions':
>> drivers/md/dm-table.c:1925:4: error: implicit declaration of function 'set_dax_synchronous'; did you mean 'device_synchronous'? [-Werror=implicit-function-declaration]
       set_dax_synchronous(t->md->dax_dev);
       ^~~~~~~~~~~~~~~~~~~
       device_synchronous
   cc1: some warnings being treated as errors

vim +897 drivers/md/dm-table.c

   892	
   893	/* Check devices support synchronous DAX */
   894	static int device_synchronous(struct dm_target *ti, struct dm_dev *dev,
   895					       sector_t start, sector_t len, void *data)
   896	{
 > 897		return dax_synchronous(dev->dax_dev);
   898	}
   899	

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