Hi Hsin-Yi,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on wsa/i2c/for-next]
[also build test ERROR on robh/for-next mediatek/for-next v5.13-rc3 next-20210527]
[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-in-i2c/20210527-155826
base:   https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-next
config: x86_64-randconfig-a011-20210526 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 6505c630407c5feec818f0bb1c284f9eeebf2071)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://github.com/0day-ci/linux/commit/e76ae7334b07a6721160299cf30e55b200bb5466
        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/20210527-155826
        git checkout e76ae7334b07a6721160299cf30e55b200bb5466
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from drivers/gpu/drm/i915/i915_gem.c:1250:
>> drivers/gpu/drm/i915/selftests/i915_gem.c:97:13: error: static declaration of 'pm_suspend' follows non-static declaration
   static void pm_suspend(struct drm_i915_private *i915)
               ^
   include/linux/suspend.h:331:12: note: previous declaration is here
   extern int pm_suspend(suspend_state_t state);
              ^
   In file included from drivers/gpu/drm/i915/i915_gem.c:1250:
   drivers/gpu/drm/i915/selftests/i915_gem.c:155:13: error: incompatible pointer to integer conversion passing 'struct drm_i915_private *' to parameter of type 'suspend_state_t' (aka 'int') [-Werror,-Wint-conversion]
           pm_suspend(i915);
                      ^~~~
   include/linux/suspend.h:331:39: note: passing argument to parameter 'state' here
   extern int pm_suspend(suspend_state_t state);
                                         ^
   2 errors generated.


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(a)lists.01.org