[radeon-alex:amd-20.45 1087/2427] drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h:679:12: warning: variable 'temp' set but not used - dri-devel - freedesktop.org experimental mailing list

15 Dec 2020


      Hi Anthony,
FYI, the error/warning still remains.
tree:   git://people.freedesktop.org/~agd5f/linux.git amd-20.45
head:   a3950d94b046fb206e58fd3ec717f071c0203ba3
commit: cba14b2c4e6c30f8af8c1fe00893e11e040d1873 [1087/2427] drm/amd/display: combine public interfaces into single header
config: i386-randconfig-r022-20201214 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
        git remote add radeon-alex git://people.freedesktop.org/~agd5f/linux.git
        git fetch --no-tags radeon-alex amd-20.45
        git checkout cba14b2c4e6c30f8af8c1fe00893e11e040d1873
        # save the attached .config to linux build tree
        make W=1 ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot lkp@intel.com
All warnings (new ones prefixed by >>):
In file included from drivers/gpu/drm/amd/display/dmub/dmub_srv.h:67,
                    from drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_debugfs.c:35:
   drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h: In function 'dmub_rb_flush_pending':
...
...
drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h:679:12: warning: variable 'temp' set but not used [-Wunused-but-set-variable]
679 |   uint64_t temp;
         |            ^~~~
   In file included from drivers/gpu/drm/amd/backport/include/kcl/kcl_amdgpu.h:5,
                    from drivers/gpu/drm/amd/backport/backport.h:17,
                    from <command-line>:
   At top level:
   drivers/gpu/drm/amd/amdgpu/amdgpu.h:193:18: warning: 'sched_policy' defined but not used [-Wunused-const-variable=]
     193 | static const int sched_policy = KFD_SCHED_POLICY_HWS;
         |                  ^~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/display/dc/dc_types.h:33,
                    from drivers/gpu/drm/amd/display/dc/dm_services_types.h:30,
                    from drivers/gpu/drm/amd/include/dm_pp_interface.h:26,
                    from drivers/gpu/drm/amd/amdgpu/amdgpu.h:64,
                    from drivers/gpu/drm/amd/backport/include/kcl/kcl_amdgpu.h:5,
                    from drivers/gpu/drm/amd/backport/backport.h:17,
                    from <command-line>:
   drivers/gpu/drm/amd/display/include/fixed31_32.h:76:32: warning: 'dc_fixpt_ln2_div_2' defined but not used [-Wunused-const-variable=]
      76 | static const struct fixed31_32 dc_fixpt_ln2_div_2 = { 1488522236LL };
         |                                ^~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:75:32: warning: 'dc_fixpt_ln2' defined but not used [-Wunused-const-variable=]
      75 | static const struct fixed31_32 dc_fixpt_ln2 = { 2977044471LL };
         |                                ^~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:74:32: warning: 'dc_fixpt_e' defined but not used [-Wunused-const-variable=]
      74 | static const struct fixed31_32 dc_fixpt_e = { 11674931555LL };
         |                                ^~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:73:32: warning: 'dc_fixpt_two_pi' defined but not used [-Wunused-const-variable=]
      73 | static const struct fixed31_32 dc_fixpt_two_pi = { 26986075409LL };
         |                                ^~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:72:32: warning: 'dc_fixpt_pi' defined but not used [-Wunused-const-variable=]
      72 | static const struct fixed31_32 dc_fixpt_pi = { 13493037705LL };
         |                                ^~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:67:32: warning: 'dc_fixpt_zero' defined but not used [-Wunused-const-variable=]
      67 | static const struct fixed31_32 dc_fixpt_zero = { 0 };
         |                                ^~~~~~~~~~~~~
--
   In file included from drivers/gpu/drm/amd/display/dmub/dmub_srv.h:67,
                    from drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h:30,
                    from drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dmub_psr.c:28:
   drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h: In function 'dmub_rb_flush_pending':
...
...
drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h:679:12: warning: variable 'temp' set but not used [-Wunused-but-set-variable]
679 |   uint64_t temp;
         |            ^~~~
   In file included from drivers/gpu/drm/amd/display/dc/inc/core_types.h:88,
                    from drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dmub_psr.c:30:
   At top level:
   drivers/gpu/drm/amd/display/dc/inc/hw/dpp.h:54:42: warning: 'dpp_input_csc_matrix' defined but not used [-Wunused-const-variable=]
      54 | static const struct dpp_input_csc_matrix dpp_input_csc_matrix[] = {
         |                                          ^~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/display/dc/inc/core_types.h:32,
                    from drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dmub_psr.c:30:
   drivers/gpu/drm/amd/display/include/ddc_service_types.h:124:22: warning: 'DP_DVI_CONVERTER_ID_4' defined but not used [-Wunused-const-variable=]
     124 | static const uint8_t DP_DVI_CONVERTER_ID_4[] = "m2DVIa";
         |                      ^~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/ddc_service_types.h:122:22: warning: 'DP_VGA_LVDS_CONVERTER_ID_3' defined but not used [-Wunused-const-variable=]
     122 | static const uint8_t DP_VGA_LVDS_CONVERTER_ID_3[] = "dnomlA";
         |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/ddc_service_types.h:120:22: warning: 'DP_VGA_LVDS_CONVERTER_ID_2' defined but not used [-Wunused-const-variable=]
     120 | static const uint8_t DP_VGA_LVDS_CONVERTER_ID_2[] = "sivarT";
         |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/backport/include/kcl/kcl_amdgpu.h:5,
                    from drivers/gpu/drm/amd/backport/backport.h:17,
                    from <command-line>:
   drivers/gpu/drm/amd/amdgpu/amdgpu.h:193:18: warning: 'sched_policy' defined but not used [-Wunused-const-variable=]
     193 | static const int sched_policy = KFD_SCHED_POLICY_HWS;
         |                  ^~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/display/dc/dc_types.h:33,
                    from drivers/gpu/drm/amd/display/dc/dm_services_types.h:30,
                    from drivers/gpu/drm/amd/include/dm_pp_interface.h:26,
                    from drivers/gpu/drm/amd/amdgpu/amdgpu.h:64,
                    from drivers/gpu/drm/amd/backport/include/kcl/kcl_amdgpu.h:5,
                    from drivers/gpu/drm/amd/backport/backport.h:17,
                    from <command-line>:
   drivers/gpu/drm/amd/display/include/fixed31_32.h:76:32: warning: 'dc_fixpt_ln2_div_2' defined but not used [-Wunused-const-variable=]
      76 | static const struct fixed31_32 dc_fixpt_ln2_div_2 = { 1488522236LL };
         |                                ^~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:75:32: warning: 'dc_fixpt_ln2' defined but not used [-Wunused-const-variable=]
      75 | static const struct fixed31_32 dc_fixpt_ln2 = { 2977044471LL };
         |                                ^~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:74:32: warning: 'dc_fixpt_e' defined but not used [-Wunused-const-variable=]
      74 | static const struct fixed31_32 dc_fixpt_e = { 11674931555LL };
         |                                ^~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:73:32: warning: 'dc_fixpt_two_pi' defined but not used [-Wunused-const-variable=]
      73 | static const struct fixed31_32 dc_fixpt_two_pi = { 26986075409LL };
         |                                ^~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:72:32: warning: 'dc_fixpt_pi' defined but not used [-Wunused-const-variable=]
      72 | static const struct fixed31_32 dc_fixpt_pi = { 13493037705LL };
         |                                ^~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:67:32: warning: 'dc_fixpt_zero' defined but not used [-Wunused-const-variable=]
      67 | static const struct fixed31_32 dc_fixpt_zero = { 0 };
         |                                ^~~~~~~~~~~~~
--
   In file included from drivers/gpu/drm/amd/display/dmub/dmub_srv.h:67,
                    from drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h:30,
                    from drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_panel_cntl.c:28:
   drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h: In function 'dmub_rb_flush_pending':
...
...
drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h:679:12: warning: variable 'temp' set but not used [-Wunused-but-set-variable]
679 |   uint64_t temp;
         |            ^~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_panel_cntl.c: In function 'calculate_16_bit_backlight_from_pwm':
   drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_panel_cntl.c:54:11: warning: variable 'bl_pwm_cntl' set but not used [-Wunused-but-set-variable]
      54 |  uint32_t bl_pwm_cntl, bl_pwm, fractional_duty_cycle_en;
         |           ^~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_panel_cntl.c:53:11: warning: variable 'pwm_period_cntl' set but not used [-Wunused-but-set-variable]
      53 |  uint32_t pwm_period_cntl, bl_period, bl_int_count;
         |           ^~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_panel_cntl.c: At top level:
   drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_panel_cntl.c:98:10: warning: no previous prototype for 'dce_panel_cntl_hw_init' [-Wmissing-prototypes]
      98 | uint32_t dce_panel_cntl_hw_init(struct panel_cntl *panel_cntl)
         |          ^~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_panel_cntl.c:158:6: warning: no previous prototype for 'dce_is_panel_backlight_on' [-Wmissing-prototypes]
     158 | bool dce_is_panel_backlight_on(struct panel_cntl *panel_cntl)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_panel_cntl.c:168:6: warning: no previous prototype for 'dce_is_panel_powered_on' [-Wmissing-prototypes]
     168 | bool dce_is_panel_powered_on(struct panel_cntl *panel_cntl)
         |      ^~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_panel_cntl.c:180:6: warning: no previous prototype for 'dce_store_backlight_level' [-Wmissing-prototypes]
     180 | void dce_store_backlight_level(struct panel_cntl *panel_cntl)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_panel_cntl.c:195:6: warning: no previous prototype for 'dce_driver_set_backlight' [-Wmissing-prototypes]
     195 | void dce_driver_set_backlight(struct panel_cntl *panel_cntl,
         |      ^~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/display/dc/inc/core_types.h:88,
                    from drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_panel_cntl.c:27:
   drivers/gpu/drm/amd/display/dc/inc/hw/dpp.h:54:42: warning: 'dpp_input_csc_matrix' defined but not used [-Wunused-const-variable=]
      54 | static const struct dpp_input_csc_matrix dpp_input_csc_matrix[] = {
         |                                          ^~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/display/dc/inc/core_types.h:32,
                    from drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_panel_cntl.c:27:
   drivers/gpu/drm/amd/display/include/ddc_service_types.h:124:22: warning: 'DP_DVI_CONVERTER_ID_4' defined but not used [-Wunused-const-variable=]
     124 | static const uint8_t DP_DVI_CONVERTER_ID_4[] = "m2DVIa";
         |                      ^~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/ddc_service_types.h:122:22: warning: 'DP_VGA_LVDS_CONVERTER_ID_3' defined but not used [-Wunused-const-variable=]
     122 | static const uint8_t DP_VGA_LVDS_CONVERTER_ID_3[] = "dnomlA";
         |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/ddc_service_types.h:120:22: warning: 'DP_VGA_LVDS_CONVERTER_ID_2' defined but not used [-Wunused-const-variable=]
     120 | static const uint8_t DP_VGA_LVDS_CONVERTER_ID_2[] = "sivarT";
         |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/backport/include/kcl/kcl_amdgpu.h:5,
                    from drivers/gpu/drm/amd/backport/backport.h:17,
                    from <command-line>:
   drivers/gpu/drm/amd/amdgpu/amdgpu.h:193:18: warning: 'sched_policy' defined but not used [-Wunused-const-variable=]
     193 | static const int sched_policy = KFD_SCHED_POLICY_HWS;
         |                  ^~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/display/dc/dc_types.h:33,
                    from drivers/gpu/drm/amd/display/dc/dm_services_types.h:30,
                    from drivers/gpu/drm/amd/include/dm_pp_interface.h:26,
                    from drivers/gpu/drm/amd/amdgpu/amdgpu.h:64,
                    from drivers/gpu/drm/amd/backport/include/kcl/kcl_amdgpu.h:5,
                    from drivers/gpu/drm/amd/backport/backport.h:17,
                    from <command-line>:
   drivers/gpu/drm/amd/display/include/fixed31_32.h:76:32: warning: 'dc_fixpt_ln2_div_2' defined but not used [-Wunused-const-variable=]
      76 | static const struct fixed31_32 dc_fixpt_ln2_div_2 = { 1488522236LL };
         |                                ^~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:75:32: warning: 'dc_fixpt_ln2' defined but not used [-Wunused-const-variable=]
      75 | static const struct fixed31_32 dc_fixpt_ln2 = { 2977044471LL };
         |                                ^~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:74:32: warning: 'dc_fixpt_e' defined but not used [-Wunused-const-variable=]
      74 | static const struct fixed31_32 dc_fixpt_e = { 11674931555LL };
         |                                ^~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:73:32: warning: 'dc_fixpt_two_pi' defined but not used [-Wunused-const-variable=]
      73 | static const struct fixed31_32 dc_fixpt_two_pi = { 26986075409LL };
         |                                ^~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:72:32: warning: 'dc_fixpt_pi' defined but not used [-Wunused-const-variable=]
      72 | static const struct fixed31_32 dc_fixpt_pi = { 13493037705LL };
         |                                ^~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:67:32: warning: 'dc_fixpt_zero' defined but not used [-Wunused-const-variable=]
      67 | static const struct fixed31_32 dc_fixpt_zero = { 0 };
         |                                ^~~~~~~~~~~~~
--
   In file included from drivers/gpu/drm/amd/display/dmub/dmub_srv.h:67,
                    from drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h:30,
                    from drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc.c:61:
   drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h: In function 'dmub_rb_flush_pending':
...
...
drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h:679:12: warning: variable 'temp' set but not used [-Wunused-but-set-variable]
679 |   uint64_t temp;
         |            ^~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc.c: At top level:
   drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc.c:788:6: warning: no previous prototype for 'apply_ctx_interdependent_lock' [-Wmissing-prototypes]
     788 | void apply_ctx_interdependent_lock(struct dc *dc, struct dc_state *context, struct dc_stream_state *stream, bool lock)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/display/dc/inc/core_types.h:88,
                    from drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc.c:33:
   drivers/gpu/drm/amd/display/dc/inc/hw/dpp.h:54:42: warning: 'dpp_input_csc_matrix' defined but not used [-Wunused-const-variable=]
      54 | static const struct dpp_input_csc_matrix dpp_input_csc_matrix[] = {
         |                                          ^~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/display/dc/inc/core_types.h:32,
                    from drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc.c:33:
   drivers/gpu/drm/amd/display/include/ddc_service_types.h:124:22: warning: 'DP_DVI_CONVERTER_ID_4' defined but not used [-Wunused-const-variable=]
     124 | static const uint8_t DP_DVI_CONVERTER_ID_4[] = "m2DVIa";
         |                      ^~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/ddc_service_types.h:122:22: warning: 'DP_VGA_LVDS_CONVERTER_ID_3' defined but not used [-Wunused-const-variable=]
     122 | static const uint8_t DP_VGA_LVDS_CONVERTER_ID_3[] = "dnomlA";
         |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/ddc_service_types.h:120:22: warning: 'DP_VGA_LVDS_CONVERTER_ID_2' defined but not used [-Wunused-const-variable=]
     120 | static const uint8_t DP_VGA_LVDS_CONVERTER_ID_2[] = "sivarT";
         |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/backport/include/kcl/kcl_amdgpu.h:5,
                    from drivers/gpu/drm/amd/backport/backport.h:17,
                    from <command-line>:
   drivers/gpu/drm/amd/amdgpu/amdgpu.h:193:18: warning: 'sched_policy' defined but not used [-Wunused-const-variable=]
     193 | static const int sched_policy = KFD_SCHED_POLICY_HWS;
         |                  ^~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/display/dc/dc_types.h:33,
                    from drivers/gpu/drm/amd/display/dc/dm_services_types.h:30,
                    from drivers/gpu/drm/amd/include/dm_pp_interface.h:26,
                    from drivers/gpu/drm/amd/amdgpu/amdgpu.h:64,
                    from drivers/gpu/drm/amd/backport/include/kcl/kcl_amdgpu.h:5,
                    from drivers/gpu/drm/amd/backport/backport.h:17,
                    from <command-line>:
   drivers/gpu/drm/amd/display/include/fixed31_32.h:76:32: warning: 'dc_fixpt_ln2_div_2' defined but not used [-Wunused-const-variable=]
      76 | static const struct fixed31_32 dc_fixpt_ln2_div_2 = { 1488522236LL };
         |                                ^~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:75:32: warning: 'dc_fixpt_ln2' defined but not used [-Wunused-const-variable=]
      75 | static const struct fixed31_32 dc_fixpt_ln2 = { 2977044471LL };
         |                                ^~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:74:32: warning: 'dc_fixpt_e' defined but not used [-Wunused-const-variable=]
      74 | static const struct fixed31_32 dc_fixpt_e = { 11674931555LL };
         |                                ^~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:73:32: warning: 'dc_fixpt_two_pi' defined but not used [-Wunused-const-variable=]
      73 | static const struct fixed31_32 dc_fixpt_two_pi = { 26986075409LL };
         |                                ^~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:72:32: warning: 'dc_fixpt_pi' defined but not used [-Wunused-const-variable=]
      72 | static const struct fixed31_32 dc_fixpt_pi = { 13493037705LL };
         |                                ^~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:67:32: warning: 'dc_fixpt_zero' defined but not used [-Wunused-const-variable=]
      67 | static const struct fixed31_32 dc_fixpt_zero = { 0 };
         |                                ^~~~~~~~~~~~~
--
   In file included from drivers/gpu/drm/amd/display/dmub/dmub_srv.h:67,
                    from drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:49:
   drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h: In function 'dmub_rb_flush_pending':
...
...
drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h:679:12: warning: variable 'temp' set but not used [-Wunused-but-set-variable]
679 |   uint64_t temp;
         |            ^~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c: In function 'query_hdcp_capability':
   drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:599:28: warning: variable 'status' set but not used [-Wunused-but-set-variable]
     599 |   enum hdcp_message_status status = HDCP_MESSAGE_UNSUPPORTED;
         |                            ^~~~~~
   In file included from drivers/gpu/drm/amd/display/dc/inc/core_types.h:88,
                    from drivers/gpu/drm/amd/display/dc/inc/resource.h:28,
                    from drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:42:
   At top level:
   drivers/gpu/drm/amd/display/dc/inc/hw/dpp.h:54:42: warning: 'dpp_input_csc_matrix' defined but not used [-Wunused-const-variable=]
      54 | static const struct dpp_input_csc_matrix dpp_input_csc_matrix[] = {
         |                                          ^~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/display/dc/inc/dc_link_ddc.h:29,
                    from drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:36:
   drivers/gpu/drm/amd/display/include/ddc_service_types.h:124:22: warning: 'DP_DVI_CONVERTER_ID_4' defined but not used [-Wunused-const-variable=]
     124 | static const uint8_t DP_DVI_CONVERTER_ID_4[] = "m2DVIa";
         |                      ^~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/ddc_service_types.h:122:22: warning: 'DP_VGA_LVDS_CONVERTER_ID_3' defined but not used [-Wunused-const-variable=]
     122 | static const uint8_t DP_VGA_LVDS_CONVERTER_ID_3[] = "dnomlA";
         |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/ddc_service_types.h:120:22: warning: 'DP_VGA_LVDS_CONVERTER_ID_2' defined but not used [-Wunused-const-variable=]
     120 | static const uint8_t DP_VGA_LVDS_CONVERTER_ID_2[] = "sivarT";
         |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/backport/include/kcl/kcl_amdgpu.h:5,
                    from drivers/gpu/drm/amd/backport/backport.h:17,
                    from <command-line>:
   drivers/gpu/drm/amd/amdgpu/amdgpu.h:193:18: warning: 'sched_policy' defined but not used [-Wunused-const-variable=]
     193 | static const int sched_policy = KFD_SCHED_POLICY_HWS;
         |                  ^~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/display/dc/dc_types.h:33,
                    from drivers/gpu/drm/amd/display/dc/dm_services_types.h:30,
                    from drivers/gpu/drm/amd/include/dm_pp_interface.h:26,
                    from drivers/gpu/drm/amd/amdgpu/amdgpu.h:64,
                    from drivers/gpu/drm/amd/backport/include/kcl/kcl_amdgpu.h:5,
                    from drivers/gpu/drm/amd/backport/backport.h:17,
                    from <command-line>:
   drivers/gpu/drm/amd/display/include/fixed31_32.h:76:32: warning: 'dc_fixpt_ln2_div_2' defined but not used [-Wunused-const-variable=]
      76 | static const struct fixed31_32 dc_fixpt_ln2_div_2 = { 1488522236LL };
         |                                ^~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:75:32: warning: 'dc_fixpt_ln2' defined but not used [-Wunused-const-variable=]
      75 | static const struct fixed31_32 dc_fixpt_ln2 = { 2977044471LL };
         |                                ^~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:74:32: warning: 'dc_fixpt_e' defined but not used [-Wunused-const-variable=]
      74 | static const struct fixed31_32 dc_fixpt_e = { 11674931555LL };
         |                                ^~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:73:32: warning: 'dc_fixpt_two_pi' defined but not used [-Wunused-const-variable=]
      73 | static const struct fixed31_32 dc_fixpt_two_pi = { 26986075409LL };
         |                                ^~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:72:32: warning: 'dc_fixpt_pi' defined but not used [-Wunused-const-variable=]
      72 | static const struct fixed31_32 dc_fixpt_pi = { 13493037705LL };
         |                                ^~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:67:32: warning: 'dc_fixpt_zero' defined but not used [-Wunused-const-variable=]
      67 | static const struct fixed31_32 dc_fixpt_zero = { 0 };
         |                                ^~~~~~~~~~~~~
--
   In file included from drivers/gpu/drm/amd/display/dmub/dmub_srv.h:67,
                    from drivers/gpu/drm/amd/amdgpu/../display/dc/dc_dmub_srv.h:30,
                    from drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:36:
   drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h: In function 'dmub_rb_flush_pending':
...
...
drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h:679:12: warning: variable 'temp' set but not used [-Wunused-but-set-variable]
679 |   uint64_t temp;
         |            ^~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c: At top level:
   drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:325:10: warning: no previous prototype for 'generic_reg_get' [-Wmissing-prototypes]
     325 | uint32_t generic_reg_get(const struct dc_context *ctx, uint32_t addr,
         |          ^~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:333:10: warning: no previous prototype for 'generic_reg_get2' [-Wmissing-prototypes]
     333 | uint32_t generic_reg_get2(const struct dc_context *ctx, uint32_t addr,
         |          ^~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:343:10: warning: no previous prototype for 'generic_reg_get3' [-Wmissing-prototypes]
     343 | uint32_t generic_reg_get3(const struct dc_context *ctx, uint32_t addr,
         |          ^~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:355:10: warning: no previous prototype for 'generic_reg_get4' [-Wmissing-prototypes]
     355 | uint32_t generic_reg_get4(const struct dc_context *ctx, uint32_t addr,
         |          ^~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:369:10: warning: no previous prototype for 'generic_reg_get5' [-Wmissing-prototypes]
     369 | uint32_t generic_reg_get5(const struct dc_context *ctx, uint32_t addr,
         |          ^~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:385:10: warning: no previous prototype for 'generic_reg_get6' [-Wmissing-prototypes]
     385 | uint32_t generic_reg_get6(const struct dc_context *ctx, uint32_t addr,
         |          ^~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:403:10: warning: no previous prototype for 'generic_reg_get7' [-Wmissing-prototypes]
     403 | uint32_t generic_reg_get7(const struct dc_context *ctx, uint32_t addr,
         |          ^~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:423:10: warning: no previous prototype for 'generic_reg_get8' [-Wmissing-prototypes]
     423 | uint32_t generic_reg_get8(const struct dc_context *ctx, uint32_t addr,
         |          ^~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:529:6: warning: no previous prototype for 'generic_write_indirect_reg' [-Wmissing-prototypes]
     529 | void generic_write_indirect_reg(const struct dc_context *ctx,
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:537:10: warning: no previous prototype for 'generic_read_indirect_reg' [-Wmissing-prototypes]
     537 | uint32_t generic_read_indirect_reg(const struct dc_context *ctx,
         |          ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:555:10: warning: no previous prototype for 'generic_indirect_reg_get' [-Wmissing-prototypes]
     555 | uint32_t generic_indirect_reg_get(const struct dc_context *ctx,
         |          ^~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:586:10: warning: no previous prototype for 'generic_indirect_reg_update_ex' [-Wmissing-prototypes]
     586 | uint32_t generic_indirect_reg_update_ex(const struct dc_context *ctx,
         |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/backport/include/kcl/kcl_amdgpu.h:5,
                    from drivers/gpu/drm/amd/backport/backport.h:17,
                    from <command-line>:
   drivers/gpu/drm/amd/amdgpu/amdgpu.h:193:18: warning: 'sched_policy' defined but not used [-Wunused-const-variable=]
     193 | static const int sched_policy = KFD_SCHED_POLICY_HWS;
         |                  ^~~~~~~~~~~~
   In file included from drivers/gpu/drm/amd/display/dc/dc_types.h:33,
                    from drivers/gpu/drm/amd/display/dc/dm_services_types.h:30,
                    from drivers/gpu/drm/amd/include/dm_pp_interface.h:26,
                    from drivers/gpu/drm/amd/amdgpu/amdgpu.h:64,
                    from drivers/gpu/drm/amd/backport/include/kcl/kcl_amdgpu.h:5,
                    from drivers/gpu/drm/amd/backport/backport.h:17,
                    from <command-line>:
   drivers/gpu/drm/amd/display/include/fixed31_32.h:76:32: warning: 'dc_fixpt_ln2_div_2' defined but not used [-Wunused-const-variable=]
      76 | static const struct fixed31_32 dc_fixpt_ln2_div_2 = { 1488522236LL };
         |                                ^~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:75:32: warning: 'dc_fixpt_ln2' defined but not used [-Wunused-const-variable=]
      75 | static const struct fixed31_32 dc_fixpt_ln2 = { 2977044471LL };
         |                                ^~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:74:32: warning: 'dc_fixpt_e' defined but not used [-Wunused-const-variable=]
      74 | static const struct fixed31_32 dc_fixpt_e = { 11674931555LL };
         |                                ^~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:73:32: warning: 'dc_fixpt_two_pi' defined but not used [-Wunused-const-variable=]
      73 | static const struct fixed31_32 dc_fixpt_two_pi = { 26986075409LL };
         |                                ^~~~~~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:72:32: warning: 'dc_fixpt_pi' defined but not used [-Wunused-const-variable=]
      72 | static const struct fixed31_32 dc_fixpt_pi = { 13493037705LL };
         |                                ^~~~~~~~~~~
   drivers/gpu/drm/amd/display/include/fixed31_32.h:67:32: warning: 'dc_fixpt_zero' defined but not used [-Wunused-const-variable=]
      67 | static const struct fixed31_32 dc_fixpt_zero = { 0 };
         |                                ^~~~~~~~~~~~~
..
vim +/temp +679 drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
670	
   671	static inline void dmub_rb_flush_pending(const struct dmub_rb *rb)
   672	{
   673		uint32_t rptr = rb->rptr;
   674		uint32_t wptr = rb->wrpt;
   675	
   676		while (rptr != wptr) {
   677			uint64_t volatile *data = (uint64_t volatile *)rb->base_address + rptr / sizeof(uint64_t);
   678			//uint64_t volatile *p = (uint64_t volatile *)data;
...
679			uint64_t temp;
680			int i;
   681	
   682			for (i = 0; i < DMUB_RB_CMD_SIZE / sizeof(uint64_t); i++)
   683				temp = *data++;
   684	
   685			rptr += DMUB_RB_CMD_SIZE;
   686			if (rptr >= rb->capacity)
   687				rptr %= rb->capacity;
   688		}
   689	}
   690
---
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