[vishal:vv/dax_abi 2/5] drivers/dax/bus.c:19:1: sparse: sparse: symbol 'dax_region_rwsem' was not declared. Should it be static?

[vishal:vv/dax_abi 2/5] drivers/dax/bus.c:19:1: sparse: sparse: symbol 'dax_region_rwsem' was not declared. Should it be static?

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vishal/linux.git vv/dax_abi
head:   d3de88ca301b687923a19a41d16a22afcd9c40a1
commit: 2e7ab04d7b9be08918c4166412b02550d545819c [2/5] dax/bus.c: replace driver-core lock usage by a local rwsem
config: x86_64-randconfig-121-20240118 (https://download.01.org/0day-ci/archive/20240119/202401190002.akeSPLMC-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240119/202401190002.akeSPLMC-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401190002.akeSPLMC-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/dax/bus.c:19:1: sparse: sparse: symbol 'dax_region_rwsem' was not declared. Should it be static?
>> drivers/dax/bus.c:25:1: sparse: sparse: symbol 'dax_dev_rwsem' was not declared. Should it be static?

vim +/dax_region_rwsem +19 drivers/dax/bus.c

    14	
    15	/*
    16	 * All changes to the dax region configuration occur with this lock held
    17	 * for write.
    18	 */
  > 19	DECLARE_RWSEM(dax_region_rwsem);
    20	
    21	/*
    22	 * All changes to the dax device configuration occur with this lock held
    23	 * for write.
    24	 */
  > 25	DECLARE_RWSEM(dax_dev_rwsem);
    26	

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