Hi Hsin-Yi, Thank you for the patch! Yet something to improve: [auto build test ERROR on next-20210413] [also build test ERROR on v5.12-rc7] [cannot apply to wsa/i2c/for-next robh/for-next char-misc/char-misc-testing mediatek/for-next v5.12-rc7 v5.12-rc6 v5.12-rc5] [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/Hsin-Yi-Wang/add-power-control-i... base: dcf1b51d6b2ac5da234ae6883ed0e9422c339588 config: i386-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/bdc2a0f5916e6855282b62026e7ba8343... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Hsin-Yi-Wang/add-power-control-in-i2c/20210414-164337 git checkout bdc2a0f5916e6855282b62026e7ba83432859dac # save the attached .config to linux build tree make W=1 W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from drivers/gpu/drm/i915/i915_gem.c:1251: 97 | static void pm_suspend(struct drm_i915_private *i915) | ^~~~~~~~~~ In file included from include/linux/regulator/consumer.h:35, from include/linux/i2c.h:18, from drivers/gpu/drm/i915/i915_drv.h:39, from drivers/gpu/drm/i915/gt/intel_context.h:14, from drivers/gpu/drm/i915/gem/i915_gem_context.h:12, from drivers/gpu/drm/i915/i915_gem.c:44: include/linux/suspend.h:331:12: note: previous declaration of 'pm_suspend' was here 331 | extern int pm_suspend(suspend_state_t state); | ^~~~~~~~~~ vim +/pm_suspend +97 drivers/gpu/drm/i915/selftests/i915_gem.c 3f51b7e1f36a37 Chris Wilson 2018-08-30 96 3f51b7e1f36a37 Chris Wilson 2018-08-30 @97 static void pm_suspend(struct drm_i915_private *i915) 3f51b7e1f36a37 Chris Wilson 2018-08-30 98 { c9d08cc3e3393e Chris Wilson 2019-01-14 99 intel_wakeref_t wakeref; c9d08cc3e3393e Chris Wilson 2019-01-14 100 c447ff7db34807 Daniele Ceraolo Spurio 2019-06-13 101 with_intel_runtime_pm(&i915->runtime_pm, wakeref) { e986209c67024c Chris Wilson 2020-01-30 102 i915_ggtt_suspend(&i915->ggtt); 3f51b7e1f36a37 Chris Wilson 2018-08-30 103 i915_gem_suspend_late(i915); d4225a535b3b08 Chris Wilson 2019-01-14 104 } 3f51b7e1f36a37 Chris Wilson 2018-08-30 105 } 3f51b7e1f36a37 Chris Wilson 2018-08-30 106 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org