Hi Andy, kernel test robot noticed the following build errors: [auto build test ERROR on pci/next] [also build test ERROR on pci/for-linus linus/master v6.19-rc6 next-20260120] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Andy-Shevchenko/ACPI-PCI-simplify-code-with-acpi_get_local_u64_address/20260121-004826 base: https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next patch link: https://lore.kernel.org/r/20260120154015.1764021-1-andriy.shevchenko%40linux.intel.com patch subject: [PATCH v1 1/1] ACPI: PCI: simplify code with acpi_get_local_u64_address() config: i386-buildonly-randconfig-001-20260121 compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202601211015.DidNlKfG-lkp@intel.com/ All errors (new ones prefixed by >>): drivers/acpi/pci_slot.c:44:6: warning: unused variable 'device' [-Wunused-variable] 44 | int device = -1; | ^~~~~~ >> drivers/acpi/pci_slot.c:57:9: error: use of undeclared label 'out' 57 | goto out; | ^ >> drivers/acpi/pci_slot.c:67:2: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int] 67 | status = acpi_evaluate_integer(handle, "_SUN", NULL, sun); | ^ | int >> drivers/acpi/pci_slot.c:67:33: error: use of undeclared identifier 'handle' 67 | status = acpi_evaluate_integer(handle, "_SUN", NULL, sun); | ^ >> drivers/acpi/pci_slot.c:67:55: error: use of undeclared identifier 'sun' 67 | status = acpi_evaluate_integer(handle, "_SUN", NULL, sun); | ^ >> drivers/acpi/pci_slot.c:68:2: error: expected identifier or '(' 68 | if (ACPI_FAILURE(status)) { | ^ drivers/acpi/pci_slot.c:74:2: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int] 74 | device = (adr >> 16) & 0xffff; | ^ | int >> drivers/acpi/pci_slot.c:74:12: error: use of undeclared identifier 'adr' 74 | device = (adr >> 16) & 0xffff; | ^ drivers/acpi/pci_slot.c:75:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int] 75 | out: | ^ | int >> drivers/acpi/pci_slot.c:75:4: error: expected ';' after top level declarator 75 | out: | ^ | ; >> drivers/acpi/pci_slot.c:76:8: error: unknown type name 'buffer' 76 | kfree(buffer.pointer); | ^ >> drivers/acpi/pci_slot.c:76:14: error: expected ')' 76 | kfree(buffer.pointer); | ^ drivers/acpi/pci_slot.c:76:7: note: to match this '(' 76 | kfree(buffer.pointer); | ^ drivers/acpi/pci_slot.c:76:2: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int] 76 | kfree(buffer.pointer); | ^ | int drivers/acpi/pci_slot.c:77:2: error: expected identifier or '(' 77 | return device; | ^ >> drivers/acpi/pci_slot.c:78:1: error: extraneous closing brace ('}') 78 | } | ^ 1 warning and 14 errors generated. vim +/out +57 drivers/acpi/pci_slot.c 8344b568f5bdc7 Alex Chiang 2008-06-10 40 8344b568f5bdc7 Alex Chiang 2008-06-10 41 static int 27663c5855b10a Matthew Wilcox 2008-10-10 42 check_slot(acpi_handle handle, unsigned long long *sun) 8344b568f5bdc7 Alex Chiang 2008-06-10 43 { 362b7077a5546b Matthew Wilcox 2008-07-22 44 int device = -1; 6705d4a3a5ffa1 Andy Shevchenko 2026-01-20 45 unsigned long long sta; 8344b568f5bdc7 Alex Chiang 2008-06-10 46 acpi_status status; 6705d4a3a5ffa1 Andy Shevchenko 2026-01-20 47 u64 adr; 8344b568f5bdc7 Alex Chiang 2008-06-10 48 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 8344b568f5bdc7 Alex Chiang 2008-06-10 49 8344b568f5bdc7 Alex Chiang 2008-06-10 50 acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer); 409ffed2b6ae1d Joe Perches 2016-05-27 51 pr_debug("Checking slot on path: %s\n", (char *)buffer.pointer); 8344b568f5bdc7 Alex Chiang 2008-06-10 52 8344b568f5bdc7 Alex Chiang 2008-06-10 53 if (check_sta_before_sun) { 8344b568f5bdc7 Alex Chiang 2008-06-10 54 /* If SxFy doesn't have _STA, we just assume it's there */ 8344b568f5bdc7 Alex Chiang 2008-06-10 55 status = acpi_evaluate_integer(handle, "_STA", NULL, &sta); 362b7077a5546b Matthew Wilcox 2008-07-22 56 if (ACPI_SUCCESS(status) && !(sta & ACPI_STA_DEVICE_PRESENT)) 8344b568f5bdc7 Alex Chiang 2008-06-10 @57 goto out; 8344b568f5bdc7 Alex Chiang 2008-06-10 58 } 8344b568f5bdc7 Alex Chiang 2008-06-10 59 6705d4a3a5ffa1 Andy Shevchenko 2026-01-20 60 if (acpi_get_local_u64_address(handle, &adr)) 6705d4a3a5ffa1 Andy Shevchenko 2026-01-20 61 pr_debug("_ADR returned with failure on %s\n", 6705d4a3a5ffa1 Andy Shevchenko 2026-01-20 62 (char *)buffer.pointer); 8344b568f5bdc7 Alex Chiang 2008-06-10 63 goto out; 8344b568f5bdc7 Alex Chiang 2008-06-10 64 } 8344b568f5bdc7 Alex Chiang 2008-06-10 65 8344b568f5bdc7 Alex Chiang 2008-06-10 66 /* No _SUN == not a slot == bail */ 8344b568f5bdc7 Alex Chiang 2008-06-10 @67 status = acpi_evaluate_integer(handle, "_SUN", NULL, sun); 8344b568f5bdc7 Alex Chiang 2008-06-10 @68 if (ACPI_FAILURE(status)) { 409ffed2b6ae1d Joe Perches 2016-05-27 69 pr_debug("_SUN returned %d on %s\n", 409ffed2b6ae1d Joe Perches 2016-05-27 70 status, (char *)buffer.pointer); 8344b568f5bdc7 Alex Chiang 2008-06-10 71 goto out; 8344b568f5bdc7 Alex Chiang 2008-06-10 72 } 8344b568f5bdc7 Alex Chiang 2008-06-10 73 362b7077a5546b Matthew Wilcox 2008-07-22 @74 device = (adr >> 16) & 0xffff; 8344b568f5bdc7 Alex Chiang 2008-06-10 @75 out: 8344b568f5bdc7 Alex Chiang 2008-06-10 @76 kfree(buffer.pointer); 362b7077a5546b Matthew Wilcox 2008-07-22 77 return device; 8344b568f5bdc7 Alex Chiang 2008-06-10 @78 } 8344b568f5bdc7 Alex Chiang 2008-06-10 79 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki