drivers/iio/light/cm32181.c:508:1: sparse: sparse: symbol 'cm32181_pm_ops' 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:   69dac8e431af26173ca0a1ebc87054e01c585bcc
commit: 68c1b3dd5c48b2323067f8c1f0649ae2f31ab20b iio: light: cm32181: Add PM support
date:   5 weeks ago
config: i386-randconfig-s001 (https://download.01.org/0day-ci/archive/20220813/202208132158.Lo65077F-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce:
        # 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=68c1b3dd5c48b2323067f8c1f0649ae2f31ab20b
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 68c1b3dd5c48b2323067f8c1f0649ae2f31ab20b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/iio/light/

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/iio/light/cm32181.c:508:1: sparse: sparse: symbol 'cm32181_pm_ops' was not declared. Should it be static?

vim +/cm32181_pm_ops +508 drivers/iio/light/cm32181.c

   507	
 > 508	DEFINE_SIMPLE_DEV_PM_OPS(cm32181_pm_ops, cm32181_suspend, cm32181_resume);
   509	

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