Re: [v5 1/5] drm/panel: add basic DP AUX backlight support

[kernel test robot]

Hi Rajeev,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on drm-intel/for-linux-next]
[also build test ERROR on drm-tip/drm-tip drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next linus/master v5.13-rc3 next-20210528]
[cannot apply to drm/drm-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/Rajeev-Nandan/drm-Support-basic-DPCD-backlight-in-panel-simple-and-add-a-new-panel-ATNA33XC20/20210530-235810
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: openrisc-randconfig-r002-20210530 (attached as .config)
compiler: or1k-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/1cf1b3f6b1f766d4e932422d1cdec19354acdcc3
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Rajeev-Nandan/drm-Support-basic-DPCD-backlight-in-panel-simple-and-add-a-new-panel-ATNA33XC20/20210530-235810
        git checkout 1cf1b3f6b1f766d4e932422d1cdec19354acdcc3
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=openrisc 

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

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/drm_panel.c:39:32: error: field 'info' has incomplete type
      39 |  struct drm_edp_backlight_info info;
         |                                ^~~~
   drivers/gpu/drm/drm_panel.c: In function 'dp_aux_backlight_update_status':
>> drivers/gpu/drm/drm_panel.c:362:4: error: implicit declaration of function 'drm_edp_backlight_enable'; did you mean 'backlight_enable'? [-Werror=implicit-function-declaration]
     362 |    drm_edp_backlight_enable(bl->aux, &bl->info, brightness);
         |    ^~~~~~~~~~~~~~~~~~~~~~~~
         |    backlight_enable
>> drivers/gpu/drm/drm_panel.c:366:9: error: implicit declaration of function 'drm_edp_backlight_set_level' [-Werror=implicit-function-declaration]
     366 |   ret = drm_edp_backlight_set_level(bl->aux, &bl->info, brightness);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/drm_panel.c:369:4: error: implicit declaration of function 'drm_edp_backlight_disable'; did you mean 'backlight_disable'? [-Werror=implicit-function-declaration]
     369 |    drm_edp_backlight_disable(bl->aux, &bl->info);
         |    ^~~~~~~~~~~~~~~~~~~~~~~~~
         |    backlight_disable
   drivers/gpu/drm/drm_panel.c: In function 'drm_panel_dp_aux_backlight':
>> drivers/gpu/drm/drm_panel.c:428:7: error: implicit declaration of function 'drm_edp_backlight_supported' [-Werror=implicit-function-declaration]
     428 |  if (!drm_edp_backlight_supported(edp_dpcd)) {
         |       ^~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/drm_panel.c:433:8: error: implicit declaration of function 'drm_edp_backlight_init' [-Werror=implicit-function-declaration]
     433 |  ret = drm_edp_backlight_init(aux, &bl->info, 0, edp_dpcd,
         |        ^~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for LOCKDEP
   Depends on DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT && (FRAME_POINTER || MIPS || PPC || S390 || MICROBLAZE || ARM || ARC || X86)
   Selected by
   - PROVE_LOCKING && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT
   - DEBUG_LOCK_ALLOC && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT


vim +/info +39 drivers/gpu/drm/drm_panel.c

    35	
    36	struct dp_aux_backlight {
    37		struct backlight_device *base;
    38		struct drm_dp_aux *aux;
  > 39		struct drm_edp_backlight_info info;
    40		bool enabled;
    41	};
    42	

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

Attachment: .config.gz
Description: application/gzip