From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 014C4C433F5 for ; Sat, 26 Mar 2022 11:46:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232755AbiCZLsG (ORCPT ); Sat, 26 Mar 2022 07:48:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33476 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232747AbiCZLry (ORCPT ); Sat, 26 Mar 2022 07:47:54 -0400 Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D86B650466; Sat, 26 Mar 2022 04:46:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1648295177; x=1679831177; h=date:from:to:cc:subject:message-id:mime-version; bh=QZz30kRk2KYFgwCCmkTEJe3s7wNZUQDJ9cvHRPojmY0=; b=PTq2cvEtK0Mpj4er9XfUIHJgFc8QRO7PqCkV4pXb4XnXIsm23lx1nbMP tkZGPUXpaAx36W/rDu9eIY7UeezXEWCpGRLACi17XXThjEM62eOq/T4lk 5pdK/130vcBCrqnloIhSIs9jgsSgR3tx40pg1XTxiMS6Fa/8DhlzInkQI FYFAIGaXTTBCB67UMG4qRwG4c39VVMSoej4nfnAgUD/KQUAoRdN86eBS1 xW73hmGBfXA/jjQlBVWawvKmZbFxJ1RFgJJ2eX2hBWT669DCrrFMPrtCN JOtYoE6vNhUl2pSCc6jI2q3pQ7vTSyKcm6iB11tO8tqTdwjJpITTAnnRb A==; X-IronPort-AV: E=McAfee;i="6200,9189,10297"; a="239376247" X-IronPort-AV: E=Sophos;i="5.90,213,1643702400"; d="scan'208";a="239376247" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Mar 2022 04:46:16 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,213,1643702400"; d="scan'208";a="718492219" Received: from lkp-server02.sh.intel.com (HELO 89b41b6ae01c) ([10.239.97.151]) by orsmga005.jf.intel.com with ESMTP; 26 Mar 2022 04:46:14 -0700 Received: from kbuild by 89b41b6ae01c with local (Exim 4.92) (envelope-from ) id 1nY4s1-000NKn-Vl; Sat, 26 Mar 2022 11:46:13 +0000 Date: Sat, 26 Mar 2022 19:45:19 +0800 From: kernel test robot To: Alex Deucher Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Nicholas Kazlauskas , linux-doc@vger.kernel.org Subject: drivers/gpu/drm/amd/amdgpu/../display/dc/dcn31/dcn31_optc.c:95: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst Message-ID: <202203261919.vs4G6G1g-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Alex, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 52d543b5497cf31d6baeb0bcfe5a5474c3238578 commit: 8fe44c080a53ac0ccbe88053a2e40f9acca33091 drm/amdgpu/display: fold DRM_AMD_DC_DCN3_1 into DRM_AMD_DC_DCN date: 9 months ago config: powerpc64-randconfig-r015-20220325 (https://download.01.org/0day-ci/archive/20220326/202203261919.vs4G6G1g-lkp@intel.com/config) compiler: powerpc64-linux-gcc (GCC) 11.2.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8fe44c080a53ac0ccbe88053a2e40f9acca33091 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 8fe44c080a53ac0ccbe88053a2e40f9acca33091 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/gpu/drm/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> drivers/gpu/drm/amd/amdgpu/../display/dc/dcn31/dcn31_optc.c:95: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Enable CRTC vim +95 drivers/gpu/drm/amd/amdgpu/../display/dc/dcn31/dcn31_optc.c 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 93 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 94 /** 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 @95 * Enable CRTC 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 96 * Enable CRTC - call ASIC Control Object to enable Timing generator. 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 97 */ 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 98 static bool optc31_enable_crtc(struct timing_generator *optc) 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 99 { 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 100 struct optc *optc1 = DCN10TG_FROM_TG(optc); 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 101 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 102 /* opp instance for OTG, 1 to 1 mapping and odm will adjust */ 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 103 REG_UPDATE(OPTC_DATA_SOURCE_SELECT, 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 104 OPTC_SEG0_SRC_SEL, optc->inst); 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 105 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 106 /* VTG enable first is for HW workaround */ 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 107 REG_UPDATE(CONTROL, 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 108 VTG0_ENABLE, 1); 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 109 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 110 REG_SEQ_START(); 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 111 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 112 /* Enable CRTC */ 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 113 REG_UPDATE_2(OTG_CONTROL, 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 114 OTG_DISABLE_POINT_CNTL, 2, 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 115 OTG_MASTER_EN, 1); 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 116 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 117 REG_SEQ_SUBMIT(); 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 118 REG_SEQ_WAIT_DONE(); 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 119 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 120 return true; 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 121 } 110d3968fe9508 Nicholas Kazlauskas 2021-05-19 122 :::::: The code at line 95 was first introduced by commit :::::: 110d3968fe9508142cb76b530d141209efa169a8 drm/amd/display: Add DCN3.1 OPTC :::::: TO: Nicholas Kazlauskas :::::: CC: Alex Deucher -- 0-DAY CI Kernel Test Service https://01.org/lkp