Re: [PATCH] ACPI: scan: Turn off unused power resources during initialization

[kernel test robot <lkp@intel.com>]

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Hi "Rafael,

I love your patch! Yet something to improve:

[auto build test ERROR on pm/linux-next]
[also build test ERROR on linux/master linus/master v5.12-rc3 next-20210317]
[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/Rafael-J-Wysocki/ACPI-scan-Turn-off-unused-power-resources-during-initialization/20210318-005323
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
config: x86_64-randconfig-c022-20210317 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/2462e52396b65921f0c83dfe19d5fcd9927d3498
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Rafael-J-Wysocki/ACPI-scan-Turn-off-unused-power-resources-during-initialization/20210318-005323
        git checkout 2462e52396b65921f0c83dfe19d5fcd9927d3498
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   ld: drivers/acpi/scan.o: in function `acpi_scan_init':
>> drivers/acpi/scan.c:2363: undefined reference to `acpi_turn_off_unused_power_resources'


vim +2363 drivers/acpi/scan.c

  2290	
  2291	int __init acpi_scan_init(void)
  2292	{
  2293		int result;
  2294		acpi_status status;
  2295		struct acpi_table_stao *stao_ptr;
  2296	
  2297		acpi_pci_root_init();
  2298		acpi_pci_link_init();
  2299		acpi_processor_init();
  2300		acpi_platform_init();
  2301		acpi_lpss_init();
  2302		acpi_apd_init();
  2303		acpi_cmos_rtc_init();
  2304		acpi_container_init();
  2305		acpi_memory_hotplug_init();
  2306		acpi_watchdog_init();
  2307		acpi_pnp_init();
  2308		acpi_int340x_thermal_init();
  2309		acpi_amba_init();
  2310		acpi_init_lpit();
  2311	
  2312		acpi_scan_add_handler(&generic_device_handler);
  2313	
  2314		/*
  2315		 * If there is STAO table, check whether it needs to ignore the UART
  2316		 * device in SPCR table.
  2317		 */
  2318		status = acpi_get_table(ACPI_SIG_STAO, 0,
  2319					(struct acpi_table_header **)&stao_ptr);
  2320		if (ACPI_SUCCESS(status)) {
  2321			if (stao_ptr->header.length > sizeof(struct acpi_table_stao))
  2322				pr_info(PREFIX "STAO Name List not yet supported.\n");
  2323	
  2324			if (stao_ptr->ignore_uart)
  2325				acpi_get_spcr_uart_addr();
  2326	
  2327			acpi_put_table((struct acpi_table_header *)stao_ptr);
  2328		}
  2329	
  2330		acpi_gpe_apply_masked_gpes();
  2331		acpi_update_all_gpes();
  2332	
  2333		/*
  2334		 * Although we call __add_memory() that is documented to require the
  2335		 * device_hotplug_lock, it is not necessary here because this is an
  2336		 * early code when userspace or any other code path cannot trigger
  2337		 * hotplug/hotunplug operations.
  2338		 */
  2339		mutex_lock(&acpi_scan_lock);
  2340		/*
  2341		 * Enumerate devices in the ACPI namespace.
  2342		 */
  2343		result = acpi_bus_scan(ACPI_ROOT_OBJECT);
  2344		if (result)
  2345			goto out;
  2346	
  2347		result = acpi_bus_get_device(ACPI_ROOT_OBJECT, &acpi_root);
  2348		if (result)
  2349			goto out;
  2350	
  2351		/* Fixed feature devices do not exist on HW-reduced platform */
  2352		if (!acpi_gbl_reduced_hardware) {
  2353			result = acpi_bus_scan_fixed();
  2354			if (result) {
  2355				acpi_detach_data(acpi_root->handle,
  2356						 acpi_scan_drop_device);
  2357				acpi_device_del(acpi_root);
  2358				put_device(&acpi_root->dev);
  2359				goto out;
  2360			}
  2361		}
  2362	
> 2363		acpi_turn_off_unused_power_resources();
  2364	
  2365		acpi_scan_initialized = true;
  2366	
  2367	 out:
  2368		mutex_unlock(&acpi_scan_lock);
  2369		return result;
  2370	}
  2371	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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