Hi Andy, I love your patch! Yet something to improve: [auto build test ERROR on linux/master] [also build test ERROR on linus/master v5.12-rc2 next-20210305] [cannot apply to gpio/for-next] [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/Andy-Shevchenko/gpiolib-Reuse-de... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2ab38c17aac10bf55ab3efde4c4db3893d8691d2 config: s390-randconfig-s031-20210309 (attached as .config) compiler: s390-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-262-g5e674421-dirty # https://github.com/0day-ci/linux/commit/cfe5ca8e3b629a621c75b8e64aa49f8ee... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Andy-Shevchenko/gpiolib-Reuse-device-s-fwnode-to-create-IRQ-domain/20210309-033330 git checkout cfe5ca8e3b629a621c75b8e64aa49f8ee81f1e0d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): drivers/gpio/gpiolib.c: In function 'gpiochip_add_irqchip': 1505 | gc->irq.domain = irq_domain_create_simple(fwnode, | ^~~~~~~~~~~~~~~~~~~~~~~~ | irq_domain_create_tree 1505 | gc->irq.domain = irq_domain_create_simple(fwnode, | ^ cc1: some warnings being treated as errors vim +1505 drivers/gpio/gpiolib.c 1449 1450 /** 1451 * gpiochip_add_irqchip() - adds an IRQ chip to a GPIO chip 1452 * @gc: the GPIO chip to add the IRQ chip to 1453 * @lock_key: lockdep class for IRQ lock 1454 * @request_key: lockdep class for IRQ request 1455 */ 1456 static int gpiochip_add_irqchip(struct gpio_chip *gc, 1457 struct lock_class_key *lock_key, 1458 struct lock_class_key *request_key) 1459 { 1460 struct fwnode_handle *fwnode = dev_fwnode(&gc->gpiodev->dev); 1461 struct irq_chip *irqchip = gc->irq.chip; 1462 const struct irq_domain_ops *ops = NULL; 1463 unsigned int type; 1464 unsigned int i; 1465 1466 if (!irqchip) 1467 return 0; 1468 1469 if (gc->irq.parent_handler && gc->can_sleep) { 1470 chip_err(gc, "you cannot have chained interrupts on a chip that may sleep\n"); 1471 return -EINVAL; 1472 } 1473 1474 type = gc->irq.default_type; 1475 1476 /* 1477 * Specifying a default trigger is a terrible idea if DT or ACPI is 1478 * used to configure the interrupts, as you may end up with 1479 * conflicting triggers. Tell the user, and reset to NONE. 1480 */ 1481 if (WARN(fwnode && type != IRQ_TYPE_NONE, 1482 "%pfw: Ignoring %u default trigger\n", fwnode, type)) 1483 type = IRQ_TYPE_NONE; 1484 1485 if (gc->to_irq) 1486 chip_warn(gc, "to_irq is redefined in %s and you shouldn't rely on it\n", __func__); 1487 1488 gc->to_irq = gpiochip_to_irq; 1489 gc->irq.default_type = type; 1490 gc->irq.lock_key = lock_key; 1491 gc->irq.request_key = request_key; 1492 1493 /* If a parent irqdomain is provided, let's build a hierarchy */ 1494 if (gpiochip_hierarchy_is_hierarchical(gc)) { 1495 int ret = gpiochip_hierarchy_add_domain(gc); 1496 if (ret) 1497 return ret; 1498 } else { 1499 /* Some drivers provide custom irqdomain ops */ 1500 if (gc->irq.domain_ops) 1501 ops = gc->irq.domain_ops; 1502 1503 if (!ops) 1504 ops = &gpiochip_domain_ops; 1506 gc->ngpio, 1507 gc->irq.first, 1508 ops, gc); 1509 if (!gc->irq.domain) 1510 return -EINVAL; 1511 } 1512 1513 if (gc->irq.parent_handler) { 1514 void *data = gc->irq.parent_handler_data ?: gc; 1515 1516 for (i = 0; i < gc->irq.num_parents; i++) { 1517 /* 1518 * The parent IRQ chip is already using the chip_data 1519 * for this IRQ chip, so our callbacks simply use the 1520 * handler_data. 1521 */ 1522 irq_set_chained_handler_and_data(gc->irq.parents[i], 1523 gc->irq.parent_handler, 1524 data); 1525 } 1526 } 1527 1528 gpiochip_set_irq_hooks(gc); 1529 1530 acpi_gpiochip_request_interrupts(gc); 1531 1532 return 0; 1533 } 1534 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org