linux-kernel - [agd5f:drm-next 56/91] drivers/gpu/drm/amd/amdgpu/umc_v8_7.c:97:11: warning: variable 'umc_reg

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Date:   Wed, 19 Jan 2022 12:12:13 +0800
From:   kernel test robot <lkp@...el.com>
To:     mziya <Mohammadzafar.ziya@....com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org,
        Alex Deucher <alexander.deucher@....com>,
        "Stanley.Yang" <Stanley.Yang@....com>
Subject: [agd5f:drm-next 56/91] drivers/gpu/drm/amd/amdgpu/umc_v8_7.c:97:11:
 warning: variable 'umc_reg_offset' set but not used

tree:   https://gitlab.freedesktop.org/agd5f/linux.git drm-next
head:   e23fcf632883babbea03fc27f7993e151969b652
commit: c34242eea16f7d973501267142dd340cad3caeec [56/91] drm/amdgpu: add new query interface for umc_v8_7 block
config: i386-randconfig-a001-20220117 (https://download.01.org/0day-ci/archive/20220119/202201191214.xx7M9Hem-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project f7b7138a62648f4019c55e4671682af1f851f295)
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
        git remote add agd5f https://gitlab.freedesktop.org/agd5f/linux.git
        git fetch --no-tags agd5f drm-next
        git checkout c34242eea16f7d973501267142dd340cad3caeec
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/amd/amdgpu/

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

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/umc_v8_7.c:97:11: warning: variable 'umc_reg_offset' set but not used [-Wunused-but-set-variable]
           uint32_t umc_reg_offset  = 0;
                    ^
   1 warning generated.


vim +/umc_reg_offset +97 drivers/gpu/drm/amd/amdgpu/umc_v8_7.c

    89	
    90	static void umc_v8_7_ecc_info_query_ras_error_count(struct amdgpu_device *adev,
    91						void *ras_error_status)
    92	{
    93		struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
    94	
    95		uint32_t umc_inst        = 0;
    96		uint32_t ch_inst         = 0;
  > 97		uint32_t umc_reg_offset  = 0;
    98		uint32_t channel_index   = 0;
    99	
   100		/* TODO: driver needs to toggle DF Cstate to ensure
   101		 * safe access of UMC registers. Will add the protection
   102		 */
   103		LOOP_UMC_INST_AND_CH(umc_inst, ch_inst) {
   104			umc_reg_offset = get_umc_v8_7_reg_offset(adev,
   105								umc_inst,
   106								ch_inst);
   107			channel_index = get_umc_v8_7_channel_index(adev,
   108								umc_inst,
   109								ch_inst);
   110			umc_v8_7_ecc_info_query_correctable_error_count(adev,
   111								channel_index,
   112								&(err_data->ce_count));
   113			umc_v8_7_ecc_info_querry_uncorrectable_error_count(adev,
   114								channel_index,
   115								&(err_data->ue_count));
   116		}
   117	}
   118	

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