Hi Marcos, kernel test robot noticed the following build errors: [auto build test ERROR on brgl/gpio/for-next] [also build test ERROR on lee-mfd/for-mfd-next lee-mfd/for-mfd-fixes pci/next pci/for-linus linus/master v6.17-rc2 next-20250821] [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/Marcos-Del-Sol-Vives/gpio-gpio-regmap-add-flags-to-control-some-behaviour/20250821-182416 base: https://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux.git gpio/for-next patch link: https://lore.kernel.org/r/20250821101902.626329-2-marcos%40orca.pet patch subject: [PATCH v3 1/3] gpio: gpio-regmap: add flags to control some behaviour config: x86_64-buildonly-randconfig-001-20250822 (https://download.01.org/0day-ci/archive/20250822/202508221142.ETxcEpjA-lkp@xxxxxxxxx/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250822/202508221142.ETxcEpjA-lkp@xxxxxxxxx/reproduce) 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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202508221142.ETxcEpjA-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from drivers/gpio/gpio-fxl6408.c:11: >> include/linux/gpio/regmap.h:26:31: error: call to undeclared function 'BIT'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 26 | GPIO_REGMAP_DIR_BEFORE_SET = BIT(0), | ^ >> include/linux/gpio/regmap.h:26:31: error: expression is not an integer constant expression 26 | GPIO_REGMAP_DIR_BEFORE_SET = BIT(0), | ^~~~~~ In file included from drivers/gpio/gpio-fxl6408.c:12: In file included from include/linux/i2c.h:13: In file included from include/linux/acpi.h:14: In file included from include/linux/device.h:32: In file included from include/linux/device/driver.h:21: In file included from include/linux/module.h:20: In file included from include/linux/elf.h:6: In file included from arch/x86/include/asm/elf.h:10: In file included from arch/x86/include/asm/ia32.h:7: In file included from include/linux/compat.h:17: In file included from include/linux/fs.h:34: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:98:11: warning: array index 3 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds] 98 | return (set->sig[3] | set->sig[2] | | ^ ~ arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here 24 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from drivers/gpio/gpio-fxl6408.c:12: In file included from include/linux/i2c.h:13: In file included from include/linux/acpi.h:14: In file included from include/linux/device.h:32: In file included from include/linux/device/driver.h:21: In file included from include/linux/module.h:20: In file included from include/linux/elf.h:6: In file included from arch/x86/include/asm/elf.h:10: In file included from arch/x86/include/asm/ia32.h:7: In file included from include/linux/compat.h:17: In file included from include/linux/fs.h:34: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:98:25: warning: array index 2 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds] 98 | return (set->sig[3] | set->sig[2] | | ^ ~ arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here 24 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from drivers/gpio/gpio-fxl6408.c:12: In file included from include/linux/i2c.h:13: In file included from include/linux/acpi.h:14: In file included from include/linux/device.h:32: In file included from include/linux/device/driver.h:21: In file included from include/linux/module.h:20: In file included from include/linux/elf.h:6: In file included from arch/x86/include/asm/elf.h:10: In file included from arch/x86/include/asm/ia32.h:7: In file included from include/linux/compat.h:17: In file included from include/linux/fs.h:34: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:99:4: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds] 99 | set->sig[1] | set->sig[0]) == 0; | ^ ~ arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here 24 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from drivers/gpio/gpio-fxl6408.c:12: In file included from include/linux/i2c.h:13: In file included from include/linux/acpi.h:14: In file included from include/linux/device.h:32: In file included from include/linux/device/driver.h:21: In file included from include/linux/module.h:20: In file included from include/linux/elf.h:6: In file included from arch/x86/include/asm/elf.h:10: In file included from arch/x86/include/asm/ia32.h:7: In file included from include/linux/compat.h:17: In file included from include/linux/fs.h:34: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:101:11: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds] 101 | return (set->sig[1] | set->sig[0]) == 0; | ^ ~ arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here 24 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from drivers/gpio/gpio-fxl6408.c:12: In file included from include/linux/i2c.h:13: In file included from include/linux/acpi.h:14: In file included from include/linux/device.h:32: In file included from include/linux/device/driver.h:21: In file included from include/linux/module.h:20: In file included from include/linux/elf.h:6: In file included from arch/x86/include/asm/elf.h:10: In file included from arch/x86/include/asm/ia32.h:7: In file included from include/linux/compat.h:17: In file included from include/linux/fs.h:34: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:114:11: warning: array index 3 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds] 114 | return (set1->sig[3] == set2->sig[3]) && | ^ ~ arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here vim +/BIT +26 include/linux/gpio/regmap.h 14 15 16 /** 17 * enum gpio_regmap_flags - flags to control GPIO operation 18 */ 19 enum gpio_regmap_flags { 20 /** 21 * @GPIO_REGMAP_DIR_BEFORE_SET: when setting a pin as an output, set 22 * its direction before the value. The output value will be undefined 23 * for a short time which may have unwanted side effects, but some 24 * hardware requires this. 25 */ > 26 GPIO_REGMAP_DIR_BEFORE_SET = BIT(0), 27 }; 28 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki