Hi Sui, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on drm-intel/for-linux-next] [also build test WARNING on drm-tip/drm-tip linus/master v5.16-rc1 next-20211118] [cannot apply to drm/drm-next robh/for-next] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Sui-Jingfeng/dt-bindings-ls2k100... base: git://anongit.freedesktop.org/drm-intel for-linux-next config: hexagon-randconfig-r041-20211119 (attached as .config) 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://github.com/0day-ci/linux/commit/85be7d6c6ecf8364546054827b621699e... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Sui-Jingfeng/dt-bindings-ls2k1000-add-gpu-device-node/20211120-165949 git checkout 85be7d6c6ecf8364546054827b621699e9fb632b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=hexagon If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): unregister_platform_driver: ^~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 warning generated. vim +/unregister_platform_driver +741 drivers/gpu/drm/etnaviv/etnaviv_drv.c 85be7d6c6ecf83 suijingfeng 2021-11-20 716 246774d17fc05a Lucas Stach 2018-01-24 717 /* 246774d17fc05a Lucas Stach 2018-01-24 718 * If the DT contains at least one available GPU device, instantiate 246774d17fc05a Lucas Stach 2018-01-24 719 * the DRM platform device. 246774d17fc05a Lucas Stach 2018-01-24 720 */ 246774d17fc05a Lucas Stach 2018-01-24 721 for_each_compatible_node(np, NULL, "vivante,gc") { 246774d17fc05a Lucas Stach 2018-01-24 722 if (!of_device_is_available(np)) 246774d17fc05a Lucas Stach 2018-01-24 723 continue; 1a866306e0fbf3 Lucas Stach 2018-09-12 724 85be7d6c6ecf83 suijingfeng 2021-11-20 725 ret = etnaviv_create_platform_device("etnaviv", np); 1a866306e0fbf3 Lucas Stach 2018-09-12 726 45a0faaba9c8c5 Fabio Estevam 2018-06-27 727 of_node_put(np); 1a866306e0fbf3 Lucas Stach 2018-09-12 728 85be7d6c6ecf83 suijingfeng 2021-11-20 729 if (ret) 85be7d6c6ecf83 suijingfeng 2021-11-20 730 goto unregister_pci_driver; 85be7d6c6ecf83 suijingfeng 2021-11-20 731 246774d17fc05a Lucas Stach 2018-01-24 732 break; 246774d17fc05a Lucas Stach 2018-01-24 733 } 246774d17fc05a Lucas Stach 2018-01-24 734 45a0faaba9c8c5 Fabio Estevam 2018-06-27 735 return 0; 45a0faaba9c8c5 Fabio Estevam 2018-06-27 736 85be7d6c6ecf83 suijingfeng 2021-11-20 737 unregister_pci_driver: 85be7d6c6ecf83 suijingfeng 2021-11-20 738 #ifdef CONFIG_DRM_ETNAVIV_PCI_DRIVER 85be7d6c6ecf83 suijingfeng 2021-11-20 739 pci_unregister_driver(&etnaviv_pci_driver); 85be7d6c6ecf83 suijingfeng 2021-11-20 740 #endif 45a0faaba9c8c5 Fabio Estevam 2018-06-27 @741 unregister_platform_driver: 45a0faaba9c8c5 Fabio Estevam 2018-06-27 742 platform_driver_unregister(&etnaviv_platform_driver); 45a0faaba9c8c5 Fabio Estevam 2018-06-27 743 unregister_gpu_driver: 45a0faaba9c8c5 Fabio Estevam 2018-06-27 744 platform_driver_unregister(&etnaviv_gpu_driver); a8c21a5451d831 The etnaviv authors 2015-12-03 745 return ret; a8c21a5451d831 The etnaviv authors 2015-12-03 746 } a8c21a5451d831 The etnaviv authors 2015-12-03 747 module_init(etnaviv_init); a8c21a5451d831 The etnaviv authors 2015-12-03 748 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org