tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.4 head: 630a3fc055ebbd162b1e710660fe3fb57b0d261e commit: a88376defcf7df6a2fca28d866973d1588be89db [36/39] UPSTREAM: PCI/PM: Remove unused pci_driver.resume_early() hook config: i386-debian-10.3 (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce (this is a W=1 build): git checkout a88376defcf7df6a2fca28d866973d1588be89db # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>, old ones prefixed by <<): 176 | .resume_early = platform_pci_resume, | ^~~~~~~~~~~~ 176 | .resume_early = platform_pci_resume, | ^~~~~~~~~~~~~~~~~~~ drivers/xen/platform-pci.c:176:20: note: (near initialization for 'platform_driver.probe') drivers/xen/platform-pci.c:176:20: note: (near initialization for 'platform_driver.probe') cc1: some warnings being treated as errors vim +176 drivers/xen/platform-pci.c 183d03cc4ff39e0 Stefano Stabellini 2010-05-17 170 183d03cc4ff39e0 Stefano Stabellini 2010-05-17 171 static struct pci_driver platform_driver = { 183d03cc4ff39e0 Stefano Stabellini 2010-05-17 172 .name = DRV_NAME, e01dc539df3ada9 Paul Gortmaker 2016-02-21 173 .probe = platform_pci_probe, 183d03cc4ff39e0 Stefano Stabellini 2010-05-17 174 .id_table = platform_pci_tbl, da72ff5bfcb02c6 Stefano Stabellini 2017-01-13 175 #ifdef CONFIG_PM da72ff5bfcb02c6 Stefano Stabellini 2017-01-13 @176 .resume_early = platform_pci_resume, da72ff5bfcb02c6 Stefano Stabellini 2017-01-13 177 #endif 183d03cc4ff39e0 Stefano Stabellini 2010-05-17 178 }; 183d03cc4ff39e0 Stefano Stabellini 2010-05-17 179 :::::: The code at line 176 was first introduced by commit :::::: da72ff5bfcb02c6ac8b169a7cf597a3c8e6c4de1 partially revert "xen: Remove event channel notification through Xen PCI platform device" :::::: TO: Stefano Stabellini <sstabellini(a)kernel.org&gt; :::::: CC: Stefano Stabellini <sstabellini(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org