Re: [PATCH v4] drm/amd/powerplay: Remove unnecessary cast on void pointer

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Hi Harsha,

[auto build test ERROR on v4.14-rc3]
[cannot apply to drm/drm-next next-20171018]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Harsha-Sharma/drm-amd-powerplay-Remove-unnecessary-cast-on-void-pointer/20171017-011426
config: x86_64-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/smu7_hwmgr.c: In function 'smu7_get_pp_table_entry_callback_func_v1':
>> drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/smu7_hwmgr.c:2954:47: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
     struct smu7_power_state  *smu7_power_state = &(power_state->hardware);
                                                  ^
   cc1: some warnings being treated as errors

vim +2954 drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/smu7_hwmgr.c

  2948	
  2949	static int smu7_get_pp_table_entry_callback_func_v1(struct pp_hwmgr *hwmgr,
  2950			void *state, struct pp_power_state *power_state,
  2951			void *pp_table, uint32_t classification_flag)
  2952	{
  2953		struct smu7_hwmgr *data = hwmgr->backend;
> 2954		struct smu7_power_state  *smu7_power_state = &(power_state->hardware);
  2955		struct smu7_performance_level *performance_level;
  2956		ATOM_Tonga_State *state_entry = state;
  2957		ATOM_Tonga_POWERPLAYTABLE *powerplay_table = pp_table;
  2958		PPTable_Generic_SubTable_Header *sclk_dep_table =
  2959				(PPTable_Generic_SubTable_Header *)
  2960				(((unsigned long)powerplay_table) +
  2961					le16_to_cpu(powerplay_table->usSclkDependencyTableOffset));
  2962	
  2963		ATOM_Tonga_MCLK_Dependency_Table *mclk_dep_table =
  2964				(ATOM_Tonga_MCLK_Dependency_Table *)
  2965				(((unsigned long)powerplay_table) +
  2966					le16_to_cpu(powerplay_table->usMclkDependencyTableOffset));
  2967	
  2968		/* The following fields are not initialized here: id orderedList allStatesList */
  2969		power_state->classification.ui_label =
  2970				(le16_to_cpu(state_entry->usClassification) &
  2971				ATOM_PPLIB_CLASSIFICATION_UI_MASK) >>
  2972				ATOM_PPLIB_CLASSIFICATION_UI_SHIFT;
  2973		power_state->classification.flags = classification_flag;
  2974		/* NOTE: There is a classification2 flag in BIOS that is not being used right now */
  2975	
  2976		power_state->classification.temporary_state = false;
  2977		power_state->classification.to_be_deleted = false;
  2978	
  2979		power_state->validation.disallowOnDC =
  2980				(0 != (le32_to_cpu(state_entry->ulCapsAndSettings) &
  2981						ATOM_Tonga_DISALLOW_ON_DC));
  2982	
  2983		power_state->pcie.lanes = 0;
  2984	
  2985		power_state->display.disableFrameModulation = false;
  2986		power_state->display.limitRefreshrate = false;
  2987		power_state->display.enableVariBright =
  2988				(0 != (le32_to_cpu(state_entry->ulCapsAndSettings) &
  2989						ATOM_Tonga_ENABLE_VARIBRIGHT));
  2990	
  2991		power_state->validation.supportedPowerLevels = 0;
  2992		power_state->uvd_clocks.VCLK = 0;
  2993		power_state->uvd_clocks.DCLK = 0;
  2994		power_state->temperatures.min = 0;
  2995		power_state->temperatures.max = 0;
  2996	
  2997		performance_level = &(smu7_power_state->performance_levels
  2998				[smu7_power_state->performance_level_count++]);
  2999	
  3000		PP_ASSERT_WITH_CODE(
  3001				(smu7_power_state->performance_level_count < smum_get_mac_definition(hwmgr->smumgr, SMU_MAX_LEVELS_GRAPHICS)),
  3002				"Performance levels exceeds SMC limit!",
  3003				return -EINVAL);
  3004	
  3005		PP_ASSERT_WITH_CODE(
  3006				(smu7_power_state->performance_level_count <=
  3007						hwmgr->platform_descriptor.hardwareActivityPerformanceLevels),
  3008				"Performance levels exceeds Driver limit!",
  3009				return -EINVAL);
  3010	
  3011		/* Performance levels are arranged from low to high. */
  3012		performance_level->memory_clock = mclk_dep_table->entries
  3013				[state_entry->ucMemoryClockIndexLow].ulMclk;
  3014		if (sclk_dep_table->ucRevId == 0)
  3015			performance_level->engine_clock = ((ATOM_Tonga_SCLK_Dependency_Table *)sclk_dep_table)->entries
  3016				[state_entry->ucEngineClockIndexLow].ulSclk;
  3017		else if (sclk_dep_table->ucRevId == 1)
  3018			performance_level->engine_clock = ((ATOM_Polaris_SCLK_Dependency_Table *)sclk_dep_table)->entries
  3019				[state_entry->ucEngineClockIndexLow].ulSclk;
  3020		performance_level->pcie_gen = get_pcie_gen_support(data->pcie_gen_cap,
  3021				state_entry->ucPCIEGenLow);
  3022		performance_level->pcie_lane = get_pcie_lane_support(data->pcie_lane_cap,
  3023				state_entry->ucPCIELaneHigh);
  3024	
  3025		performance_level = &(smu7_power_state->performance_levels
  3026				[smu7_power_state->performance_level_count++]);
  3027		performance_level->memory_clock = mclk_dep_table->entries
  3028				[state_entry->ucMemoryClockIndexHigh].ulMclk;
  3029	
  3030		if (sclk_dep_table->ucRevId == 0)
  3031			performance_level->engine_clock = ((ATOM_Tonga_SCLK_Dependency_Table *)sclk_dep_table)->entries
  3032				[state_entry->ucEngineClockIndexHigh].ulSclk;
  3033		else if (sclk_dep_table->ucRevId == 1)
  3034			performance_level->engine_clock = ((ATOM_Polaris_SCLK_Dependency_Table *)sclk_dep_table)->entries
  3035				[state_entry->ucEngineClockIndexHigh].ulSclk;
  3036	
  3037		performance_level->pcie_gen = get_pcie_gen_support(data->pcie_gen_cap,
  3038				state_entry->ucPCIEGenHigh);
  3039		performance_level->pcie_lane = get_pcie_lane_support(data->pcie_lane_cap,
  3040				state_entry->ucPCIELaneHigh);
  3041	
  3042		return 0;
  3043	}
  3044	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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