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 D5FDAC433EF for ; Fri, 14 Jan 2022 09:13:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229498AbiANJNk (ORCPT ); Fri, 14 Jan 2022 04:13:40 -0500 Received: from mga06.intel.com ([134.134.136.31]:55322 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233450AbiANJNi (ORCPT ); Fri, 14 Jan 2022 04:13:38 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1642151618; x=1673687618; h=date:from:to:cc:subject:message-id:mime-version; bh=RaOJVlZwiSIS8nodz6Kmpx4JyHIXqLC15AZgaDM31mo=; b=S7EoP7y+Ca73f2rXnSvyjjsL3qOvtL9uyxP1MQiumEOMLdywr4HYKQzl +sCxiiEIEmqUTJqPVBfxHSHEx/MJ1AxYcEdVr0EufuXFEYEOifvn0B4bL wmVXSuVHN/ipaAFTp9KMCq1zqQrOaCEeUgU1DoMn6sCEuIJVZvr+5HRTy bUUYP8AK5Ddy2BDJfhXZzozVgOpGaIn6LpVnyAEc7uE79HQHjP+5hqC0D Q+C3Wvpn59KpkmoCcN6eGhgdj3Qqp4NEqAkPut21OaxcP/WiXlpVz7R6F kDnm6LQcesyXYq8F2TAGoPrtkB6kpPmze7le5MIsUXTi+kh9dr0MCsVAw Q==; X-IronPort-AV: E=McAfee;i="6200,9189,10226"; a="304945615" X-IronPort-AV: E=Sophos;i="5.88,288,1635231600"; d="scan'208";a="304945615" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jan 2022 01:13:38 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,288,1635231600"; d="scan'208";a="516308942" Received: from lkp-server01.sh.intel.com (HELO 276f1b88eecb) ([10.239.97.150]) by orsmga007.jf.intel.com with ESMTP; 14 Jan 2022 01:13:36 -0800 Received: from kbuild by 276f1b88eecb with local (Exim 4.92) (envelope-from ) id 1n8IeN-0008Lq-OC; Fri, 14 Jan 2022 09:13:35 +0000 Date: Fri, 14 Jan 2022 17:13:25 +0800 From: kernel test robot To: Fangzhi Zuo Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Alex Deucher , Nicholas Kazlauskas Subject: drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link_dp.c:4343: warning: expecting prototype for Return PCON's post FRL link training supported BW if its non(). Prototype was for intersect_frl_link_bw_support() instead Message-ID: <202201141715.OhMqGKge-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 Fangzhi, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: fb3b0673b7d5b477ed104949450cd511337ba3c6 commit: c022375ae0955b6d97ec438d658ab43a857a010f drm/amd/display: Add DP-HDMI FRL PCON Support in DC date: 6 weeks ago config: i386-allyesconfig (https://download.01.org/0day-ci/archive/20220114/202201141715.OhMqGKge-lkp@intel.com/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c022375ae0955b6d97ec438d658ab43a857a010f git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout c022375ae0955b6d97ec438d658ab43a857a010f # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash 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/core/dc_link_dp.c:4343: warning: Function parameter or member 'max_supported_frl_bw_in_kbps' not described in 'intersect_frl_link_bw_support' drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link_dp.c:4343: warning: Function parameter or member 'hdmi_encoded_link_bw' not described in 'intersect_frl_link_bw_support' >> drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link_dp.c:4343: warning: expecting prototype for Return PCON's post FRL link training supported BW if its non(). Prototype was for intersect_frl_link_bw_support() instead vim +4343 drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link_dp.c 4336 4337 /** 4338 * Return PCON's post FRL link training supported BW if its non-zero, otherwise return max_supported_frl_bw. 4339 */ 4340 static uint32_t intersect_frl_link_bw_support( 4341 const uint32_t max_supported_frl_bw_in_kbps, 4342 const union hdmi_encoded_link_bw hdmi_encoded_link_bw) > 4343 { 4344 uint32_t supported_bw_in_kbps = max_supported_frl_bw_in_kbps; 4345 4346 // HDMI_ENCODED_LINK_BW bits are only valid if HDMI Link Configuration bit is 1 (FRL mode) 4347 if (hdmi_encoded_link_bw.bits.FRL_MODE) { 4348 if (hdmi_encoded_link_bw.bits.BW_48Gbps) 4349 supported_bw_in_kbps = 48000000; 4350 else if (hdmi_encoded_link_bw.bits.BW_40Gbps) 4351 supported_bw_in_kbps = 40000000; 4352 else if (hdmi_encoded_link_bw.bits.BW_32Gbps) 4353 supported_bw_in_kbps = 32000000; 4354 else if (hdmi_encoded_link_bw.bits.BW_24Gbps) 4355 supported_bw_in_kbps = 24000000; 4356 else if (hdmi_encoded_link_bw.bits.BW_18Gbps) 4357 supported_bw_in_kbps = 18000000; 4358 else if (hdmi_encoded_link_bw.bits.BW_9Gbps) 4359 supported_bw_in_kbps = 9000000; 4360 } 4361 4362 return supported_bw_in_kbps; 4363 } 4364 #endif 4365 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org