[PATCH 2/2] drm/dp: add a number of DP 2.0 DPCD definitions

[kernel test robot]

Hi Jani,

I love your patch! Perhaps something to improve:

[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on tegra-drm/drm/tegra/for-next drm-tip/drm-tip linus/master drm-exynos/exynos-drm-next v5.9-rc5 next-20200917]
[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/Jani-Nikula/drm-dp-add-subheadings-to-DPCD-address-definitions/20200917-185206
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: nds32-randconfig-p001-20200917 (attached as .config)
compiler: nds32le-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
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nds32 

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

All warnings (new ones prefixed by >>):

   In file included from drivers/gpu/drm/drm_crtc_helper_internal.h:31,
                    from drivers/gpu/drm/drm_crtc_helper.c:51:
>> include/drm/drm_dp_helper.h:640: warning: "DP_ADJUST_TX_FFE_PRESET_LANE0_MASK" redefined
     640 | # define DP_ADJUST_TX_FFE_PRESET_LANE0_MASK  (0xf << 4)
         | 
   include/drm/drm_dp_helper.h:638: note: this is the location of the previous definition
     638 | # define DP_ADJUST_TX_FFE_PRESET_LANE0_MASK  (0xf << 0)
         | 
>> include/drm/drm_dp_helper.h:641: warning: "DP_ADJUST_TX_FFE_PRESET_LANE0_SHIFT" redefined
     641 | # define DP_ADJUST_TX_FFE_PRESET_LANE0_SHIFT 4
         | 
   include/drm/drm_dp_helper.h:639: note: this is the location of the previous definition
     639 | # define DP_ADJUST_TX_FFE_PRESET_LANE0_SHIFT 0
         | 
--
   In file included from include/drm/drm_dp_mst_helper.h:26,
                    from drivers/gpu/drm/drm_dp_mst_topology.c:43:
>> include/drm/drm_dp_helper.h:640: warning: "DP_ADJUST_TX_FFE_PRESET_LANE0_MASK" redefined
     640 | # define DP_ADJUST_TX_FFE_PRESET_LANE0_MASK  (0xf << 4)
         | 
   include/drm/drm_dp_helper.h:638: note: this is the location of the previous definition
     638 | # define DP_ADJUST_TX_FFE_PRESET_LANE0_MASK  (0xf << 0)
         | 
>> include/drm/drm_dp_helper.h:641: warning: "DP_ADJUST_TX_FFE_PRESET_LANE0_SHIFT" redefined
     641 | # define DP_ADJUST_TX_FFE_PRESET_LANE0_SHIFT 4
         | 
   include/drm/drm_dp_helper.h:639: note: this is the location of the previous definition
     639 | # define DP_ADJUST_TX_FFE_PRESET_LANE0_SHIFT 0
         | 
   drivers/gpu/drm/drm_dp_mst_topology.c: In function 'drm_dp_send_query_stream_enc_status':
   drivers/gpu/drm/drm_dp_mst_topology.c:3261:6: warning: variable 'len' set but not used [-Wunused-but-set-variable]
    3261 |  int len, ret;
         |      ^~~
--
   In file included from drivers/gpu/drm/bridge/analogix/analogix_dp_core.h:13,
                    from drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c:17:
>> include/drm/drm_dp_helper.h:640: warning: "DP_ADJUST_TX_FFE_PRESET_LANE0_MASK" redefined
     640 | # define DP_ADJUST_TX_FFE_PRESET_LANE0_MASK  (0xf << 4)
         | 
   include/drm/drm_dp_helper.h:638: note: this is the location of the previous definition
     638 | # define DP_ADJUST_TX_FFE_PRESET_LANE0_MASK  (0xf << 0)
         | 
>> include/drm/drm_dp_helper.h:641: warning: "DP_ADJUST_TX_FFE_PRESET_LANE0_SHIFT" redefined
     641 | # define DP_ADJUST_TX_FFE_PRESET_LANE0_SHIFT 4
         | 
   include/drm/drm_dp_helper.h:639: note: this is the location of the previous definition
     639 | # define DP_ADJUST_TX_FFE_PRESET_LANE0_SHIFT 0
         | 
   drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c:527:5: warning: no previous prototype for 'analogix_dp_start_aux_transaction' [-Wmissing-prototypes]
     527 | int analogix_dp_start_aux_transaction(struct analogix_dp_device *dp)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c:571:5: warning: no previous prototype for 'analogix_dp_write_byte_to_dpcd' [-Wmissing-prototypes]
     571 | int analogix_dp_write_byte_to_dpcd(struct analogix_dp_device *dp,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

# https://github.com/0day-ci/linux/commit/ee700fcadff2b9f1f941cd4af77242e51a139649
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Jani-Nikula/drm-dp-add-subheadings-to-DPCD-address-definitions/20200917-185206
git checkout ee700fcadff2b9f1f941cd4af77242e51a139649
vim +/DP_ADJUST_TX_FFE_PRESET_LANE0_MASK +640 include/drm/drm_dp_helper.h

   636	
   637	/* DP 2.0 128b/132b Link Layer */
   638	# define DP_ADJUST_TX_FFE_PRESET_LANE0_MASK  (0xf << 0)
   639	# define DP_ADJUST_TX_FFE_PRESET_LANE0_SHIFT 0
 > 640	# define DP_ADJUST_TX_FFE_PRESET_LANE0_MASK  (0xf << 4)
 > 641	# define DP_ADJUST_TX_FFE_PRESET_LANE0_SHIFT 4
   642	

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