[kbuild-all] [mingo-tip:sched/headers 2375/2384] include/linux/device/driver.h:164:1: error: type defaults to 'int' in declaration of 'module_init'

tree: git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git sched/headers head: 4c707c1c0de83967079b4e385012fa5b00e2cd11 commit: fbd3e447670c4087ece6324134c77241b9c119b9 [2375/2384] headers/deps: RDMA: Optimize <rdma/ib_verbs.h> dependencies, remove <linux/dim.h> inclusion config: sparc-allyesconfig (https://download.01.org/0day-ci/archive/20220116/202201160854.9JuTmAwF-lk...) compiler: sparc64-linux-gcc (GCC) 11.2.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git/commit/?id=... git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git git fetch --no-tags mingo-tip sched/headers git checkout fbd3e447670c4087ece6324134c77241b9c119b9 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=sparc SHELL=/bin/bash 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 >>): drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4460:1: warning: data definition has no type or storage class 4460 | MODULE_DEVICE_TABLE(of, hns_roce_of_match); | ^~~~~~~~~~~~~~~~~~~ drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4460:1: error: type defaults to 'int' in declaration of 'MODULE_DEVICE_TABLE' [-Werror=implicit-int] drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4460:1: warning: parameter names (without types) in function declaration drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4466:1: warning: data definition has no type or storage class 4466 | MODULE_DEVICE_TABLE(acpi, hns_roce_acpi_match); | ^~~~~~~~~~~~~~~~~~~ drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4466:1: error: type defaults to 'int' in declaration of 'MODULE_DEVICE_TABLE' [-Werror=implicit-int] drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4466:1: warning: parameter names (without types) in function declaration In file included from include/linux/device_api.h:34, from drivers/infiniband/hw/hns/hns_roce_hw_v1.c:46: include/linux/device/driver.h:164:1: warning: data definition has no type or storage class 164 | module_init(__driver##_init); \ | ^~~~~~~~~~~ include/linux/platform_device.h:253:9: note: in expansion of macro 'module_driver' 253 | module_driver(__platform_driver, platform_driver_register, \ | ^~~~~~~~~~~~~ drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4686:1: note: in expansion of macro 'module_platform_driver' 4686 | module_platform_driver(hns_roce_driver); | ^~~~~~~~~~~~~~~~~~~~~~ 164 | module_init(__driver##_init); \ | ^~~~~~~~~~~ include/linux/platform_device.h:253:9: note: in expansion of macro 'module_driver' 253 | module_driver(__platform_driver, platform_driver_register, \ | ^~~~~~~~~~~~~ drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4686:1: note: in expansion of macro 'module_platform_driver' 4686 | module_platform_driver(hns_roce_driver); | ^~~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/linkage.h:7, from include/linux/printk.h:7, from include/asm-generic/bug.h:22, from arch/sparc/include/asm/bug.h:25, from include/linux/bug.h:5, from include/linux/cpumask_types.h:12, from include/linux/cpumask.h:5, from include/linux/smp_api.h:12, from include/linux/lockdep_api.h:27, from include/linux/timer.h:5, from include/linux/workqueue_types.h:9, from include/linux/workqueue_api.h:10, from drivers/infiniband/hw/hns/hns_roce_hw_v1.c:33: include/linux/export.h:19:30: warning: parameter names (without types) in function declaration 19 | #define THIS_MODULE ((struct module *)0) | ^~~~~~ include/linux/platform_device.h:223:41: note: in expansion of macro 'THIS_MODULE' 223 | __platform_driver_register(drv, THIS_MODULE) | ^~~~~~~~~~~ include/linux/device/driver.h:162:16: note: in expansion of macro 'platform_driver_register' 162 | return __register(&(__driver) , ##__VA_ARGS__); \ | ^~~~~~~~~~ include/linux/platform_device.h:253:9: note: in expansion of macro 'module_driver' 253 | module_driver(__platform_driver, platform_driver_register, \ | ^~~~~~~~~~~~~ drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4686:1: note: in expansion of macro 'module_platform_driver' 4686 | module_platform_driver(hns_roce_driver); | ^~~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/device_api.h:34, from drivers/infiniband/hw/hns/hns_roce_hw_v1.c:46: include/linux/device/driver.h:169:1: warning: data definition has no type or storage class 169 | module_exit(__driver##_exit); | ^~~~~~~~~~~ include/linux/platform_device.h:253:9: note: in expansion of macro 'module_driver' 253 | module_driver(__platform_driver, platform_driver_register, \ | ^~~~~~~~~~~~~ drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4686:1: note: in expansion of macro 'module_platform_driver' 4686 | module_platform_driver(hns_roce_driver); | ^~~~~~~~~~~~~~~~~~~~~~ 169 | module_exit(__driver##_exit); | ^~~~~~~~~~~ include/linux/platform_device.h:253:9: note: in expansion of macro 'module_driver' 253 | module_driver(__platform_driver, platform_driver_register, \ | ^~~~~~~~~~~~~ drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4686:1: note: in expansion of macro 'module_platform_driver' 4686 | module_platform_driver(hns_roce_driver); | ^~~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/linkage.h:7, from include/linux/printk.h:7, from include/asm-generic/bug.h:22, from arch/sparc/include/asm/bug.h:25, from include/linux/bug.h:5, from include/linux/cpumask_types.h:12, from include/linux/cpumask.h:5, from include/linux/smp_api.h:12, from include/linux/lockdep_api.h:27, from include/linux/timer.h:5, from include/linux/workqueue_types.h:9, from include/linux/workqueue_api.h:10, from drivers/infiniband/hw/hns/hns_roce_hw_v1.c:33: include/linux/export.h:19:30: warning: parameter names (without types) in function declaration 19 | #define THIS_MODULE ((struct module *)0) | ^~~~~~ include/linux/platform_device.h:223:41: note: in expansion of macro 'THIS_MODULE' 223 | __platform_driver_register(drv, THIS_MODULE) | ^~~~~~~~~~~ include/linux/device/driver.h:162:16: note: in expansion of macro 'platform_driver_register' 162 | return __register(&(__driver) , ##__VA_ARGS__); \ | ^~~~~~~~~~ include/linux/platform_device.h:253:9: note: in expansion of macro 'module_driver' 253 | module_driver(__platform_driver, platform_driver_register, \ | ^~~~~~~~~~~~~ drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4686:1: note: in expansion of macro 'module_platform_driver' 4686 | module_platform_driver(hns_roce_driver); | ^~~~~~~~~~~~~~~~~~~~~~ drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4688:16: error: expected declaration specifiers or '...' before string constant 4688 | MODULE_LICENSE("Dual BSD/GPL"); | ^~~~~~~~~~~~~~ drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4689:15: error: expected declaration specifiers or '...' before string constant 4689 | MODULE_AUTHOR("Wei Hu <xavier.huwei(a)huawei.com&gt;&quot;); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4690:15: error: expected declaration specifiers or '...' before string constant 4690 | MODULE_AUTHOR("Nenglong Zhao <zhaonenglong(a)hisilicon.com&gt;&quot;); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4691:15: error: expected declaration specifiers or '...' before string constant 4691 | MODULE_AUTHOR("Lijun Ou <oulijun(a)huawei.com&gt;&quot;); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4692:20: error: expected declaration specifiers or '...' before string constant 4692 | MODULE_DESCRIPTION("Hisilicon Hip06 Family RoCE Driver"); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/device_api.h:34, from drivers/infiniband/hw/hns/hns_roce_hw_v1.c:46: drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4686:24: warning: 'hns_roce_driver_init' defined but not used [-Wunused-function] 4686 | module_platform_driver(hns_roce_driver); | ^~~~~~~~~~~~~~~ include/linux/device/driver.h:160:19: note: in definition of macro 'module_driver' 160 | static int __init __driver##_init(void) \ | ^~~~~~~~ drivers/infiniband/hw/hns/hns_roce_hw_v1.c:4686:1: note: in expansion of macro 'module_platform_driver' 4686 | module_platform_driver(hns_roce_driver); | ^~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +164 include/linux/device/driver.h 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 144 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 145 /** 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 146 * module_driver() - Helper macro for drivers that don't do anything 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 147 * special in module init/exit. This eliminates a lot of boilerplate. 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 148 * Each module may only use this macro once, and calling it replaces 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 149 * module_init() and module_exit(). 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 150 * 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 151 * @__driver: driver name 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 152 * @__register: register function for this driver type 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 153 * @__unregister: unregister function for this driver type 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 154 * @...: Additional arguments to be passed to __register and __unregister. 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 155 * 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 156 * Use this macro to construct bus specific macros for registering 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 157 * drivers, and do not use it on its own. 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 158 */ 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 159 #define module_driver(__driver, __register, __unregister, ...) \ 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 160 static int __init __driver##_init(void) \ 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 161 { \ 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 162 return __register(&(__driver) , ##__VA_ARGS__); \ 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 163 } \ 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 @164 module_init(__driver##_init); \ 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 165 static void __exit __driver##_exit(void) \ 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 166 { \ 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 167 __unregister(&(__driver) , ##__VA_ARGS__); \ 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 168 } \ 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 @169 module_exit(__driver##_exit); 4c002c978b7f2f Greg Kroah-Hartman 2019-12-09 170 :::::: The code at line 164 was first introduced by commit :::::: 4c002c978b7f2f2306d53de051c054504af920a9 device.h: move 'struct driver' stuff out to device/driver.h :::::: TO: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org&gt; :::::: CC: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org