Hi Mario, Thank you for the patch! Yet something to improve: [auto build test ERROR on rafael-pm/linux-next] [also build test ERROR on drm-misc/drm-misc-next hid/for-next linus/master v5.19-rc4 next-20220701] [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/intel-lab-lkp/linux/commits/Mario-Limonciello/PM-suspend-Introduce-pm_suspend_preferred_s2idle/20220701-103534 base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next config: x86_64-randconfig-a004 (https://download.01.org/0day-ci/archive/20220701/202207012033.3AjPSdQe-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-3) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/9603006925839aeb40b8a65adc7be87f4e89813f git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Mario-Limonciello/PM-suspend-Introduce-pm_suspend_preferred_s2idle/20220701-103534 git checkout 9603006925839aeb40b8a65adc7be87f4e89813f # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/acpi/acpi_lpit.c: In function 'lpit_update_residency': >> drivers/acpi/acpi_lpit.c:113:22: error: implicit declaration of function 'pm_suspend_preferred_s2idle'; did you mean 'pm_suspend_default_s2idle'? [-Werror=implicit-function-declaration] 113 | if (!pm_suspend_preferred_s2idle()) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ | pm_suspend_default_s2idle drivers/acpi/acpi_lpit.c: At top level: drivers/acpi/acpi_lpit.c:149:6: warning: no previous prototype for 'acpi_init_lpit' [-Wmissing-prototypes] 149 | void acpi_init_lpit(void) | ^~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +113 drivers/acpi/acpi_lpit.c 97 98 static void lpit_update_residency(struct lpit_residency_info *info, 99 struct acpi_lpit_native *lpit_native) 100 { 101 info->frequency = lpit_native->counter_frequency ? 102 lpit_native->counter_frequency : tsc_khz * 1000; 103 if (!info->frequency) 104 info->frequency = 1; 105 106 info->gaddr = lpit_native->residency_counter; 107 if (info->gaddr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { 108 info->iomem_addr = ioremap(info->gaddr.address, 109 info->gaddr.bit_width / 8); 110 if (!info->iomem_addr) 111 return; 112 > 113 if (!pm_suspend_preferred_s2idle()) 114 return; 115 116 /* Silently fail, if cpuidle attribute group is not present */ 117 sysfs_add_file_to_group(&cpu_subsys.dev_root->kobj, 118 &dev_attr_low_power_idle_system_residency_us.attr, 119 "cpuidle"); 120 } else if (info->gaddr.space_id == ACPI_ADR_SPACE_FIXED_HARDWARE) { 121 if (!pm_suspend_preferred_s2idle()) 122 return; 123 124 /* Silently fail, if cpuidle attribute group is not present */ 125 sysfs_add_file_to_group(&cpu_subsys.dev_root->kobj, 126 &dev_attr_low_power_idle_cpu_residency_us.attr, 127 "cpuidle"); 128 } 129 } 130 -- 0-DAY CI Kernel Test Service https://01.org/lkp