tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: de5540965853e514a85d3b775e9049deb85a2ff3 commit: d5d9f7ac58ea1041375a028f143ca5784693ea86 ARM/ixp4xx: Make NEED_MACH_IO_H optional date: 4 weeks ago config: arm-randconfig-r016-20210711 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8d69635ed9ecf36fd0ca85906bfde17949671cbe) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout d5d9f7ac58ea1041375a028f143ca5784693ea86 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): if (!is_pci_memory(addr)) ^ arch/arm/mach-ixp4xx/common.c:349:7: error: implicit declaration of function 'is_pci_memory' [-Werror,-Wimplicit-function-declaration] if (!is_pci_memory((__force u32)addr)) ^ 2 errors generated. -- .start = IXP4XX_UART1_BASE_PHYS, ^ arch/arm/mach-ixp4xx/vulcan-setup.c:68:11: error: use of undeclared identifier 'IXP4XX_UART1_BASE_PHYS' .end = IXP4XX_UART1_BASE_PHYS + 0x0fff, ^ .start = IXP4XX_UART2_BASE_PHYS, ^ arch/arm/mach-ixp4xx/vulcan-setup.c:73:11: error: use of undeclared identifier 'IXP4XX_UART2_BASE_PHYS' .end = IXP4XX_UART2_BASE_PHYS + 0x0fff, ^ arch/arm/mach-ixp4xx/vulcan-setup.c:83:14: error: use of undeclared identifier 'IXP4XX_UART1_BASE_PHYS' .mapbase = IXP4XX_UART1_BASE_PHYS, ^ .membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET, ^ .membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET, ^ .uartclk = IXP4XX_UART_XTAL, ^ arch/arm/mach-ixp4xx/vulcan-setup.c:92:14: error: use of undeclared identifier 'IXP4XX_UART2_BASE_PHYS' .mapbase = IXP4XX_UART2_BASE_PHYS, ^ .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET, ^ arch/arm/mach-ixp4xx/vulcan-setup.c:93:47: error: use of undeclared identifier 'REG_OFFSET' .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET, ^ arch/arm/mach-ixp4xx/vulcan-setup.c:98:14: error: use of undeclared identifier 'IXP4XX_UART_XTAL' .uartclk = IXP4XX_UART_XTAL, ^ .num_resources = ARRAY_SIZE(vulcan_uart_resources), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:42:32: note: expanded from macro 'ARRAY_SIZE' #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr)) ^~~~~ .start = IXP4XX_EthB_BASE_PHYS, ^ arch/arm/mach-ixp4xx/vulcan-setup.c:130:11: error: use of undeclared identifier 'IXP4XX_EthB_BASE_PHYS' .end = IXP4XX_EthB_BASE_PHYS + 0x0fff, ^ .start = IXP4XX_EthC_BASE_PHYS, ^ arch/arm/mach-ixp4xx/vulcan-setup.c:138:11: error: use of undeclared identifier 'IXP4XX_EthC_BASE_PHYS' .end = IXP4XX_EthC_BASE_PHYS + 0x0fff, ^ static struct eth_plat_info vulcan_plat_eth[] = { ^ arch/arm/mach-ixp4xx/vulcan-setup.c:143:15: note: forward declaration of 'struct eth_plat_info' static struct eth_plat_info vulcan_plat_eth[] = { ^ .id = IXP4XX_ETH_NPEB, ^ fatal error: too many errors emitted, stopping now [-ferror-limit=] 20 errors generated. -- ixp4xx_pci_preinit(); ^ arch/arm/mach-ixp4xx/nas100d-pci.c:39:2: note: did you mean 'iop3xx_pci_preinit'? arch/arm/include/asm/mach/pci.h:78:13: note: 'iop3xx_pci_preinit' declared here extern void iop3xx_pci_preinit(void); ^ arch/arm/mach-ixp4xx/nas100d-pci.c:32:13: warning: no previous prototype for function 'nas100d_pci_preinit' [-Wmissing-prototypes] void __init nas100d_pci_preinit(void) ^ arch/arm/mach-ixp4xx/nas100d-pci.c:32:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void __init nas100d_pci_preinit(void) ^ static .ops = &ixp4xx_ops, ^~~~~~~~~~ iop3xx_ops arch/arm/include/asm/mach/pci.h:76:23: note: 'iop3xx_ops' declared here extern struct pci_ops iop3xx_ops; ^ .setup = ixp4xx_setup, ^ arch/arm/mach-ixp4xx/nas100d-pci.c:65:12: warning: no previous prototype for function 'nas100d_pci_init' [-Wmissing-prototypes] int __init nas100d_pci_init(void) ^ arch/arm/mach-ixp4xx/nas100d-pci.c:65:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int __init nas100d_pci_init(void) ^ static 2 warnings and 3 errors generated. -- ixp4xx_pci_preinit(); ^ arch/arm/mach-ixp4xx/vulcan-pci.c:41:2: note: did you mean 'iop3xx_pci_preinit'? arch/arm/include/asm/mach/pci.h:78:13: note: 'iop3xx_pci_preinit' declared here extern void iop3xx_pci_preinit(void); ^ arch/arm/mach-ixp4xx/vulcan-pci.c:26:13: warning: no previous prototype for function 'vulcan_pci_preinit' [-Wmissing-prototypes] void __init vulcan_pci_preinit(void) ^ arch/arm/mach-ixp4xx/vulcan-pci.c:26:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void __init vulcan_pci_preinit(void) ^ static .ops = &ixp4xx_ops, ^~~~~~~~~~ iop3xx_ops arch/arm/include/asm/mach/pci.h:76:23: note: 'iop3xx_ops' declared here extern struct pci_ops iop3xx_ops; ^ .setup = ixp4xx_setup, ^ arch/arm/mach-ixp4xx/vulcan-pci.c:63:12: warning: no previous prototype for function 'vulcan_pci_init' [-Wmissing-prototypes] int __init vulcan_pci_init(void) ^ arch/arm/mach-ixp4xx/vulcan-pci.c:63:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int __init vulcan_pci_init(void) ^ static 2 warnings and 3 errors generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for QCOM_SCM Depends on (ARM || ARM64) && HAVE_ARM_SMCCC Selected by - ARM_QCOM_SPM_CPUIDLE && CPU_IDLE && (ARM || ARM64) && (ARCH_QCOM || COMPILE_TEST && !ARM64 && MMU vim +/is_pci_memory +341 arch/arm/mach-ixp4xx/common.c 00e1b3a3d196ae Krzysztof Halasa 2014-03-23 329 f449588c65e236 Rob Herring 2012-03-06 330 #ifdef CONFIG_IXP4XX_INDIRECT_PCI f449588c65e236 Rob Herring 2012-03-06 331 /* f449588c65e236 Rob Herring 2012-03-06 332 * In the case of using indirect PCI, we simply return the actual PCI f449588c65e236 Rob Herring 2012-03-06 333 * address and our read/write implementation use that to drive the f449588c65e236 Rob Herring 2012-03-06 334 * access registers. If something outside of PCI is ioremap'd, we f449588c65e236 Rob Herring 2012-03-06 335 * fallback to the default. f449588c65e236 Rob Herring 2012-03-06 336 */ f449588c65e236 Rob Herring 2012-03-06 337 9b97173e785a54 Laura Abbott 2013-05-16 338 static void __iomem *ixp4xx_ioremap_caller(phys_addr_t addr, size_t size, f449588c65e236 Rob Herring 2012-03-06 339 unsigned int mtype, void *caller) f449588c65e236 Rob Herring 2012-03-06 340 { f449588c65e236 Rob Herring 2012-03-06 @341 if (!is_pci_memory(addr)) f449588c65e236 Rob Herring 2012-03-06 342 return __arm_ioremap_caller(addr, size, mtype, caller); f449588c65e236 Rob Herring 2012-03-06 343 f449588c65e236 Rob Herring 2012-03-06 344 return (void __iomem *)addr; f449588c65e236 Rob Herring 2012-03-06 345 } f449588c65e236 Rob Herring 2012-03-06 346 :::::: The code at line 341 was first introduced by commit :::::: f449588c65e23637aef59cae2ea7b6b2b1b767ec ARM: ixp4xx: use runtime ioremap hook :::::: TO: Rob Herring <rob.herring(a)calxeda.com&gt; :::::: CC: Rob Herring <rob.herring(a)calxeda.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org