[kbuild-all] [chrome-os:chromeos-4.4 6/9] drivers/iio/industrialio-sw-trigger.c:169:1-3: WARNING: PTR_ERR_OR_ZERO can be used

tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-4.4 head: aac4814b1098ee558c879fb53cbbaa5596d2aec7 commit: 9704384747162dd0ecd4b4859cd2a5861065fc82 [6/9] UPSTREAM: iio: core: Introduce IIO software triggers config: powerpc64-randconfig-c022-20200620 (attached as .config) compiler: powerpc-linux-gcc (GCC) 7.5.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; coccinelle warnings: (new ones prefixed by >>) Please review and possibly fold the followup patch. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org