Hi Palmer, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core head: ba63053f018721a0ad60b083e21a15e324a4a8c4 commit: 886d70aac148f6015ae3d1379c81b98af3e70981 [12/13] ARM: irq: Convert to GENERIC_IRQ_MULTI_HANDLER config: arm-netx_defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 886d70aac148f6015ae3d1379c81b98af3e70981 # save the attached .config to linux build tree make.cross ARCH=arm All errors (new ones prefixed by >>): drivers/irqchip/irq-vic.c: In function 'vic_register': >> drivers/irqchip/irq-vic.c:295:2: error: implicit declaration of function 'set_handle_irq'; did you mean 'vic_handle_irq'? [-Werror=implicit-function-declaration] set_handle_irq(vic_handle_irq); ^~~~~~~~~~~~~~ vic_handle_irq cc1: some warnings being treated as errors vim +295 drivers/irqchip/irq-vic.c ce94df9c0 arch/arm/common/vic.c Linus Walleij 2012-04-20 262 bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 263 /** f9b28ccbc arch/arm/common/vic.c Jamie Iles 2011-09-27 264 * vic_register() - Register a VIC. bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 265 * @base: The base address of the VIC. e641b987c drivers/irqchip/irq-vic.c Linus Walleij 2013-11-21 266 * @parent_irq: The parent IRQ if cascaded, else 0. bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 267 * @irq: The base IRQ for the VIC. fa943bed6 arch/arm/common/vic.c Linus Walleij 2012-04-20 268 * @valid_sources: bitmask of valid interrupts bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 269 * @resume_sources: bitmask of interrupts allowed for resume sources. f9b28ccbc arch/arm/common/vic.c Jamie Iles 2011-09-27 270 * @node: The device tree node associated with the VIC. bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 271 * bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 272 * Register the VIC with the system device tree so that it can be notified bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 273 * of suspend and resume requests and ensure that the correct actions are bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 274 * taken to re-instate the settings on resume. f9b28ccbc arch/arm/common/vic.c Jamie Iles 2011-09-27 275 * f9b28ccbc arch/arm/common/vic.c Jamie Iles 2011-09-27 276 * This also configures the IRQ domain for the VIC. bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 277 */ e641b987c drivers/irqchip/irq-vic.c Linus Walleij 2013-11-21 278 static void __init vic_register(void __iomem *base, unsigned int parent_irq, e641b987c drivers/irqchip/irq-vic.c Linus Walleij 2013-11-21 279 unsigned int irq, fa943bed6 arch/arm/common/vic.c Linus Walleij 2012-04-20 280 u32 valid_sources, u32 resume_sources, fa943bed6 arch/arm/common/vic.c Linus Walleij 2012-04-20 281 struct device_node *node) bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 282 { bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 283 struct vic_device *v; 5ced33bc0 arch/arm/common/vic.c Linus Walleij 2012-12-26 284 int i; bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 285 f9b28ccbc arch/arm/common/vic.c Jamie Iles 2011-09-27 286 if (vic_id >= ARRAY_SIZE(vic_devices)) { bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 287 printk(KERN_ERR "%s: too few VICs, increase CONFIG_ARM_VIC_NR\n", __func__); f9b28ccbc arch/arm/common/vic.c Jamie Iles 2011-09-27 288 return; f9b28ccbc arch/arm/common/vic.c Jamie Iles 2011-09-27 289 } f9b28ccbc arch/arm/common/vic.c Jamie Iles 2011-09-27 290 bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 291 v = &vic_devices[vic_id]; bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 292 v->base = base; ce94df9c0 arch/arm/common/vic.c Linus Walleij 2012-04-20 293 v->valid_sources = valid_sources; bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 294 v->resume_sources = resume_sources; 7fb7d8ae1 arch/arm/common/vic.c Rob Herring 2012-11-20 @295 set_handle_irq(vic_handle_irq); bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 296 vic_id++; e641b987c drivers/irqchip/irq-vic.c Linus Walleij 2013-11-21 297 e641b987c drivers/irqchip/irq-vic.c Linus Walleij 2013-11-21 298 if (parent_irq) { 9f2135419 drivers/irqchip/irq-vic.c Thomas Gleixner 2015-06-21 299 irq_set_chained_handler_and_data(parent_irq, 9f2135419 drivers/irqchip/irq-vic.c Thomas Gleixner 2015-06-21 300 vic_handle_irq_cascaded, v); e641b987c drivers/irqchip/irq-vic.c Linus Walleij 2013-11-21 301 } e641b987c drivers/irqchip/irq-vic.c Linus Walleij 2013-11-21 302 07c9249f1 arch/arm/common/vic.c Linus Walleij 2012-10-16 303 v->domain = irq_domain_add_simple(node, fls(valid_sources), irq, fa943bed6 arch/arm/common/vic.c Linus Walleij 2012-04-20 304 &vic_irqdomain_ops, v); 5ced33bc0 arch/arm/common/vic.c Linus Walleij 2012-12-26 305 /* create an IRQ mapping for each valid IRQ */ 5ced33bc0 arch/arm/common/vic.c Linus Walleij 2012-12-26 306 for (i = 0; i < fls(valid_sources); i++) 5ced33bc0 arch/arm/common/vic.c Linus Walleij 2012-12-26 307 if (valid_sources & (1 << i)) 5ced33bc0 arch/arm/common/vic.c Linus Walleij 2012-12-26 308 irq_create_mapping(v->domain, i); 3b4df9dbd drivers/irqchip/irq-vic.c Linus Walleij 2013-11-24 309 /* If no base IRQ was passed, figure out our allocated base */ 3b4df9dbd drivers/irqchip/irq-vic.c Linus Walleij 2013-11-24 310 if (irq) 3b4df9dbd drivers/irqchip/irq-vic.c Linus Walleij 2013-11-24 311 v->irq = irq; 3b4df9dbd drivers/irqchip/irq-vic.c Linus Walleij 2013-11-24 312 else 3b4df9dbd drivers/irqchip/irq-vic.c Linus Walleij 2013-11-24 313 v->irq = irq_find_mapping(v->domain, 0); bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 314 } bb06b7371 arch/arm/common/vic.c Hartley Sweeten 2010-01-12 315 :::::: The code at line 295 was first introduced by commit :::::: 7fb7d8ae1036f1002fe8b16c15cc26d32046df64 ARM: VIC: set handle_arch_irq in VIC initialization :::::: TO: Rob Herring :::::: CC: Rob Herring --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation