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^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/gpu/drm/amd/amdgpu/../display/dc/dcn31/dcn31_apg.c:125:2: warning: Value stored to 'channels' is never read [clang-analyzer-deadcode.DeadStores] channels = speakers_to_channels(audio_info->flags.speaker_flags).all; ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/speakers +124 drivers/gpu/drm/amd/amdgpu/../display/dc/dcn31/dcn31_apg.c 61452908a79ec9 Fangzhi Zuo 2021-06-09 108 61452908a79ec9 Fangzhi Zuo 2021-06-09 109 static void apg31_se_audio_setup( 61452908a79ec9 Fangzhi Zuo 2021-06-09 110 struct apg *apg, 61452908a79ec9 Fangzhi Zuo 2021-06-09 111 unsigned int az_inst, 61452908a79ec9 Fangzhi Zuo 2021-06-09 112 struct audio_info *audio_info) 61452908a79ec9 Fangzhi Zuo 2021-06-09 113 { 61452908a79ec9 Fangzhi Zuo 2021-06-09 114 struct dcn31_apg *apg31 = DCN31_APG_FROM_APG(apg); 61452908a79ec9 Fangzhi Zuo 2021-06-09 115 61452908a79ec9 Fangzhi Zuo 2021-06-09 116 uint32_t speakers = 0; 61452908a79ec9 Fangzhi Zuo 2021-06-09 117 uint32_t channels = 0; 61452908a79ec9 Fangzhi Zuo 2021-06-09 118 61452908a79ec9 Fangzhi Zuo 2021-06-09 119 ASSERT(audio_info); 61452908a79ec9 Fangzhi Zuo 2021-06-09 120 /* This should not happen.it does so we don't get BSOD*/ 61452908a79ec9 Fangzhi Zuo 2021-06-09 121 if (audio_info == NULL) 61452908a79ec9 Fangzhi Zuo 2021-06-09 122 return; 61452908a79ec9 Fangzhi Zuo 2021-06-09 123 61452908a79ec9 Fangzhi Zuo 2021-06-09 @124 speakers = audio_info->flags.info.ALLSPEAKERS; 61452908a79ec9 Fangzhi Zuo 2021-06-09 @125 channels = speakers_to_channels(audio_info->flags.speaker_flags).all; 61452908a79ec9 Fangzhi Zuo 2021-06-09 126 61452908a79ec9 Fangzhi Zuo 2021-06-09 127 /* DisplayPort only allows for one audio stream with stream ID 0 */ 61452908a79ec9 Fangzhi Zuo 2021-06-09 128 REG_UPDATE(APG_CONTROL2, APG_DP_AUDIO_STREAM_ID, 0); 61452908a79ec9 Fangzhi Zuo 2021-06-09 129 61452908a79ec9 Fangzhi Zuo 2021-06-09 130 /* When running in "pair mode", pairs of audio channels have their own enable 61452908a79ec9 Fangzhi Zuo 2021-06-09 131 * this is for really old audio drivers */ 61452908a79ec9 Fangzhi Zuo 2021-06-09 132 REG_UPDATE(APG_DBG_GEN_CONTROL, APG_DBG_AUDIO_CHANNEL_ENABLE, 0xF); 61452908a79ec9 Fangzhi Zuo 2021-06-09 133 // REG_UPDATE(APG_DBG_GEN_CONTROL, APG_DBG_AUDIO_CHANNEL_ENABLE, channels); 61452908a79ec9 Fangzhi Zuo 2021-06-09 134 61452908a79ec9 Fangzhi Zuo 2021-06-09 135 /* Disable forced mem power off */ 61452908a79ec9 Fangzhi Zuo 2021-06-09 136 REG_UPDATE(APG_MEM_PWR, APG_MEM_PWR_FORCE, 0); 61452908a79ec9 Fangzhi Zuo 2021-06-09 137 61452908a79ec9 Fangzhi Zuo 2021-06-09 138 apg31_enable(apg); 61452908a79ec9 Fangzhi Zuo 2021-06-09 139 } 61452908a79ec9 Fangzhi Zuo 2021-06-09 140 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org