Hi Robert,

[FYI, it's a private test report for your RFC patch.]
[auto build test ERROR on robh/for-next]
[also build test ERROR on v5.13-rc6 next-20210616]
[cannot apply to clk/clk-next]
[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/Robert-Foss/Qcom-SM8350-DispCC-VideoCC/20210617-000803
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: h8300-randconfig-p001-20210615 (attached as .config)
compiler: h8300-linux-gcc (GCC) 9.3.0
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
        # https://github.com/0day-ci/linux/commit/dec0377e64d6caab3b75a8b7325689af258652eb
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Robert-Foss/Qcom-SM8350-DispCC-VideoCC/20210617-000803
        git checkout dec0377e64d6caab3b75a8b7325689af258652eb
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=h8300 

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 include/uapi/linux/posix_types.h:5,
                    from include/uapi/linux/types.h:14,
                    from include/linux/types.h:6,
                    from include/linux/kasan-checks.h:5,
                    from include/asm-generic/rwonce.h:26,
                    from ./arch/h8300/include/generated/asm/rwonce.h:1,
                    from include/linux/compiler.h:248,
                    from include/linux/err.h:5,
                    from include/linux/clk.h:12,
                    from drivers/clk/qcom/common.c:6:
   drivers/clk/qcom/common.c: In function 'qcom_cc_runtime_resume':
>> include/linux/stddef.h:8:14: error: called object is not a function or function pointer
       8 | #define NULL ((void *)0)
         |              ^
   include/linux/pm_clock.h:82:23: note: in expansion of macro 'NULL'
      82 | #define pm_clk_resume NULL
         |                       ^~~~
   drivers/clk/qcom/common.c:397:8: note: in expansion of macro 'pm_clk_resume'
     397 |  ret = pm_clk_resume(dev);
         |        ^~~~~~~~~~~~~
   drivers/clk/qcom/common.c: In function 'qcom_cc_runtime_suspend':
>> include/linux/stddef.h:8:14: error: called object is not a function or function pointer
       8 | #define NULL ((void *)0)
         |              ^
   include/linux/pm_clock.h:81:24: note: in expansion of macro 'NULL'
      81 | #define pm_clk_suspend NULL
         |                        ^~~~
   drivers/clk/qcom/common.c:410:8: note: in expansion of macro 'pm_clk_suspend'
     410 |  ret = pm_clk_suspend(dev);
         |        ^~~~~~~~~~~~~~


vim +8 include/linux/stddef.h

^1da177e4c3f41 Linus Torvalds   2005-04-16  6  
^1da177e4c3f41 Linus Torvalds   2005-04-16  7  #undef NULL
^1da177e4c3f41 Linus Torvalds   2005-04-16 @8  #define NULL ((void *)0)
6e218287432472 Richard Knutsson 2006-09-30  9  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org