drivers/watchdog/sa1100_wdt.c:241:24: sparse: sparse: symbol 'sa1100dog_driver' was not declared. Should it be static?

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   50cd95ac46548429e5bba7ca75cc97d11a697947
commit: e86bd43bcfc579cf8935c1913e92cb76b4ba81c2 watchdog: sa1100: use platform device registration
date:   4 months ago
config: arm-randconfig-s052-20220820 (https://download.01.org/0day-ci/archive/20220821/202208210136.zAPBCMxF-lkp@xxxxxxxxx/config)
compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e86bd43bcfc579cf8935c1913e92cb76b4ba81c2
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout e86bd43bcfc579cf8935c1913e92cb76b4ba81c2
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm SHELL=/bin/bash drivers/watchdog/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

sparse warnings: (new ones prefixed by >>)
>> drivers/watchdog/sa1100_wdt.c:241:24: sparse: sparse: symbol 'sa1100dog_driver' was not declared. Should it be static?

vim +/sa1100dog_driver +241 drivers/watchdog/sa1100_wdt.c

   240	
 > 241	struct platform_driver sa1100dog_driver = {
   242		.driver.name = "sa1100_wdt",
   243		.probe	  = sa1100dog_probe,
   244		.remove	  = sa1100dog_remove,
   245	};
   246	module_platform_driver(sa1100dog_driver);
   247	

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