Hi Matti, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on regulator/for-next] [also build test WARNING on v5.11-rc7 next-20210211] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Matti-Vaittinen/Extend-regulator... base: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next config: i386-randconfig-s001-20210211 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-215-g0fb77bb6-dirty # https://github.com/0day-ci/linux/commit/1844ad67f3ebe118184da7e83b30df9f4... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Matti-Vaittinen/Extend-regulator-notification-support/20210211-204336 git checkout 1844ad67f3ebe118184da7e83b30df9f4eb0caf0 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 286 | int dev_delayed_work_autocancel(struct device *dev, struct delayed_work *w, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ "sparse warnings: (new ones prefixed by >>)" Please review and possibly fold the followup patch. vim +/dev_delayed_work_autocancel +286 drivers/regulator/irq_helpers.c 285 287 void (*worker)(struct work_struct *work)) 288 { 289 struct delayed_work **ptr; 290 291 ptr = devres_alloc(dev_delayed_work_drop, sizeof(*ptr), GFP_KERNEL); 292 if (!ptr) 293 return -ENOMEM; 294 295 INIT_DELAYED_WORK(w, worker); 296 *ptr = w; 297 devres_add(dev, ptr); 298 299 return 0; 300 } 301 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org