tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f838f8d2b694cf9d524dc4423e9dd2db13892f3f commit: 156ec4731cb22b06c08e27debc1ef9f16f4bbb5e platform/x86: amd-pmc: Add AMD platform support for S2Idle date: 7 weeks ago config: i386-randconfig-p002-20201222 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=156ec4731cb22b06c08e27debc1ef9f16f4bbb5e git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 156ec4731cb22b06c08e27debc1ef9f16f4bbb5e # 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 All warnings (new ones prefixed by >>): >> drivers/platform/x86/amd-pmc.c:88:5: warning: "CONFIG_DEBUG_FS" is not defined, evaluates to 0 [-Wundef] 88 | #if CONFIG_DEBUG_FS | ^~~~~~~~~~~~~~~ vim +/CONFIG_DEBUG_FS +88 drivers/platform/x86/amd-pmc.c 87 > 88 #if CONFIG_DEBUG_FS 89 static int smu_fw_info_show(struct seq_file *s, void *unused) 90 { 91 struct amd_pmc_dev *dev = s->private; 92 u32 value; 93 94 value = ioread32(dev->smu_base + AMD_SMU_FW_VERSION); 95 seq_printf(s, "SMU FW Info: %x\n", value); 96 return 0; 97 } 98 DEFINE_SHOW_ATTRIBUTE(smu_fw_info); 99 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org