Re: [PATCH drm-dp 2/4] drm/hisilicon/hibmc: add dp link moduel in hibmc drivers

[kernel test robot]

Hi shiyongbang,

kernel test robot noticed the following build errors:

[auto build test ERROR on drm-misc/drm-misc-next]
[also build test ERROR on linus/master v6.12-rc1 next-20241003]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/shiyongbang/drm-hisilicon-hibmc-add-dp-aux-in-hibmc-drivers/20240930-181437
base:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link:    https://lore.kernel.org/r/20240930100610.782363-3-shiyongbang%40huawei.com
patch subject: [PATCH drm-dp 2/4] drm/hisilicon/hibmc: add dp link moduel in hibmc drivers
config: i386-buildonly-randconfig-003-20241003 (https://download.01.org/0day-ci/archive/20241003/202410031735.8iRZZR6T-lkp@xxxxxxxxx/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241003/202410031735.8iRZZR6T-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410031735.8iRZZR6T-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   In file included from drivers/gpu/drm/hisilicon/hibmc/dp/dp_link.c:10:
   drivers/gpu/drm/hisilicon/hibmc/dp/dp_link.c: In function 'dp_link_training_cr_pre':
>> drivers/gpu/drm/hisilicon/hibmc/dp/dp_aux.h:45:41: error: implicit declaration of function 'FIELD_PREP' [-Werror=implicit-function-declaration]
      45 | #define DPCD_VOLTAGE_SWING_LEVEL_2      FIELD_PREP(GENMASK(1, 0), 2)
         |                                         ^~~~~~~~~~
   drivers/gpu/drm/hisilicon/hibmc/dp/dp_link.c:105:32: note: in expansion of macro 'DPCD_VOLTAGE_SWING_LEVEL_2'
     105 |                 train_set[i] = DPCD_VOLTAGE_SWING_LEVEL_2 | DPCD_PRE_EMPHASIS_LEVEL_0;
         |                                ^~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/FIELD_PREP +45 drivers/gpu/drm/hisilicon/hibmc/dp/dp_aux.h

ff6e8ef6021188 baihan li 2024-09-30  37  
ff6e8ef6021188 baihan li 2024-09-30  38  #define DPCD_TRAINING_PATTERN_DISABLE	0x0
ff6e8ef6021188 baihan li 2024-09-30  39  #define DPCD_TRAINING_PATTERN_1		0x1
ff6e8ef6021188 baihan li 2024-09-30  40  #define DPCD_TRAINING_PATTERN_2		0x2
ff6e8ef6021188 baihan li 2024-09-30  41  #define DPCD_TRAINING_PATTERN_3		0x3
ff6e8ef6021188 baihan li 2024-09-30  42  #define DPCD_TRAINING_PATTERN_4		0x7
ff6e8ef6021188 baihan li 2024-09-30  43  #define DPCD_VOLTAGE_SWING_LEVEL_0	FIELD_PREP(GENMASK(1, 0), 0)
ff6e8ef6021188 baihan li 2024-09-30  44  #define DPCD_VOLTAGE_SWING_LEVEL_1	FIELD_PREP(GENMASK(1, 0), 1)
ff6e8ef6021188 baihan li 2024-09-30 @45  #define DPCD_VOLTAGE_SWING_LEVEL_2	FIELD_PREP(GENMASK(1, 0), 2)
ff6e8ef6021188 baihan li 2024-09-30  46  #define DPCD_VOLTAGE_SWING_LEVEL_3	FIELD_PREP(GENMASK(1, 0), 3)
ff6e8ef6021188 baihan li 2024-09-30  47  #define DPCD_PRE_EMPHASIS_LEVEL_0	FIELD_PREP(GENMASK(4, 3), 0)
ff6e8ef6021188 baihan li 2024-09-30  48  #define DPCD_PRE_EMPHASIS_LEVEL_1	FIELD_PREP(GENMASK(4, 3), 1)
ff6e8ef6021188 baihan li 2024-09-30  49  #define DPCD_PRE_EMPHASIS_LEVEL_2	FIELD_PREP(GENMASK(4, 3), 2)
ff6e8ef6021188 baihan li 2024-09-30  50  #define DPCD_PRE_EMPHASIS_LEVEL_3	FIELD_PREP(GENMASK(4, 3), 3)
ff6e8ef6021188 baihan li 2024-09-30  51  

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