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d="scan'208";a="314051105" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Nov 2022 00:50:11 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10539"; a="705279153" X-IronPort-AV: E=Sophos;i="5.96,186,1665471600"; d="scan'208";a="705279153" Received: from rongch2-mobl.ccr.corp.intel.com (HELO [10.254.208.60]) ([10.254.208.60]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Nov 2022 00:50:09 -0800 Subject: Re: [linux-next:master 5636/9540] ld.lld: error: undefined symbol: drm_of_get_data_lanes_count_ep To: Biju Das , kernel test robot Cc: "llvm@lists.linux.dev" , "oe-kbuild-all@lists.linux.dev" , Linux Memory Management List , Laurent Pinchart References: <202211222131.H2kT55xh-lkp@intel.com> From: "Chen, Rong A" Message-ID: <0a033967-0336-b265-e346-e05eec14e204@intel.com> Date: Wed, 23 Nov 2022 16:50:07 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0 Thunderbird/78.12.0 Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit On 11/22/2022 11:17 PM, Biju Das wrote: > Hi kernel test robot, > >> Subject: [linux-next:master 5636/9540] ld.lld: error: undefined symbol: >> drm_of_get_data_lanes_count_ep >> >> tree: >> >> head: 771a207d1ee9f38da8c0cee1412228f18b900bac >> commit: 7a043f978ed1433bddb088a732e9bb91501ebd76 [5636/9540] drm: rcar- >> du: Add RZ/G2L DSI driver >> config: arm64-randconfig-r026-20221122 >> compiler: clang version 16.0.0 >> reproduce (this is a W=1 build): >> wget > -O ~/bin/make.cross >> chmod +x ~/bin/make.cross >> # install arm64 cross compiling tool for clang build >> # apt-get install binutils-aarch64-linux-gnu >> # >> git remote add linux-next >> git fetch --no-tags linux-next master >> git checkout 7a043f978ed1433bddb088a732e9bb91501ebd76 >> # save the config file >> mkdir build_dir && cp config build_dir/.config >> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 >> O=build_dir ARCH=arm64 SHELL=/bin/bash >> >> If you fix the issue, kindly add following tag where applicable >> | Reported-by: kernel test robot >> >> All errors (new ones prefixed by >>): >> >>>> ld.lld: error: undefined symbol: drm_of_get_data_lanes_count_ep >> >>> referenced by rzg2l_mipi_dsi.c >> >>> drivers/gpu/drm/rcar- >> du/rzg2l_mipi_dsi.o:(rzg2l_mipi_dsi_probe) in archive vmlinux.a >> -- >>>> ld.lld: error: undefined symbol: drm_bridge_attach >> >>> referenced by rzg2l_mipi_dsi.c >> >>> drivers/gpu/drm/rcar- >> du/rzg2l_mipi_dsi.o:(rzg2l_mipi_dsi_attach) in archive vmlinux.a >> -- >>>> ld.lld: error: undefined symbol: >> drm_atomic_get_new_connector_for_encoder >> >>> referenced by rzg2l_mipi_dsi.c >> >>> drivers/gpu/drm/rcar- >> du/rzg2l_mipi_dsi.o:(rzg2l_mipi_dsi_atomic_enable) in archive vmlinux.a >> -- >>>> ld.lld: error: undefined symbol: devm_drm_of_get_bridge >> >>> referenced by rzg2l_mipi_dsi.c >> >>> drivers/gpu/drm/rcar- >> du/rzg2l_mipi_dsi.o:(rzg2l_mipi_dsi_host_attach) in archive vmlinux.a >> -- >>>> ld.lld: error: undefined symbol: drm_bridge_add >> >>> referenced by rzg2l_mipi_dsi.c >> >>> drivers/gpu/drm/rcar- >> du/rzg2l_mipi_dsi.o:(rzg2l_mipi_dsi_host_attach) in archive vmlinux.a >> -- >>>> ld.lld: error: undefined symbol: drm_bridge_remove >> >>> referenced by rzg2l_mipi_dsi.c >> >>> drivers/gpu/drm/rcar- >> du/rzg2l_mipi_dsi.o:(rzg2l_mipi_dsi_host_detach) in archive vmlinux.a >> -- >>>> ld.lld: error: undefined symbol: >> drm_atomic_helper_bridge_duplicate_state >> >>> referenced by rzg2l_mipi_dsi.c >> >>> drivers/gpu/drm/rcar- >> du/rzg2l_mipi_dsi.o:(rzg2l_mipi_dsi_bridge_ops) in archive vmlinux.a >> -- >>>> ld.lld: error: undefined symbol: >> drm_atomic_helper_bridge_destroy_state >> >>> referenced by rzg2l_mipi_dsi.c >> >>> drivers/gpu/drm/rcar- >> du/rzg2l_mipi_dsi.o:(rzg2l_mipi_dsi_bridge_ops) in archive vmlinux.a >> -- >>>> ld.lld: error: undefined symbol: drm_atomic_helper_bridge_reset >> >>> referenced by rzg2l_mipi_dsi.c >> >>> drivers/gpu/drm/rcar- >> du/rzg2l_mipi_dsi.o:(rzg2l_mipi_dsi_bridge_ops) in archive vmlinux.a > > I was able to reproduce the issue and the same fix[1], will fix the issue > here for clang compiler as well. Can you please apply [1] to avoid > repeatedly sending the same issue for different compilers on the kernel test robot? Hi Biju, Thanks for your advice, we'll add it to ignore list. Best Regards, Rong Chen > > [1] https://lore.kernel.org/linux-renesas-soc/Y3wVLU01mHp2zozI@pendragon.ideasonboard.com/T/#t > > Cheers, > Biju >