Hi Serge, I love your patch! Yet something to improve: [auto build test ERROR on robh/for-next] [also build test ERROR on char-misc/char-misc-testing staging/staging-testing linus/master v5.7-rc7 next-20200526] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Serge-Semin/bus-memory-Add-Baikal-T1-SoC-APB-AXI-L2-drivers/20200526-210837 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next config: sparc-allyesconfig (attached as .config) compiler: sparc64-linux-gcc (GCC) 9.3.0 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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sparc If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>, old ones prefixed by <<): drivers/bus/bt1-axi.c: In function 'inject_error_store': drivers/bus/bt1-axi.c:228:3: error: implicit declaration of function 'readb' [-Werror=implicit-function-declaration] 228 | readb(axi->qos_regs); | ^~~~~ drivers/bus/bt1-axi.c:230:3: error: implicit declaration of function 'writeb' [-Werror=implicit-function-declaration] 230 | writeb(0, axi->qos_regs); | ^~~~~~ In file included from include/linux/kobject.h:20, from include/linux/module.h:20, from drivers/bus/bt1-axi.c:12: drivers/bus/bt1-axi.c: At top level: >> drivers/bus/bt1-axi.c:236:23: error: initialization of 'ssize_t (*)(struct device *, struct device_attribute *, char *)' {aka 'long int (*)(struct device *, struct device_attribute *, char *)'} from incompatible pointer type 'int (*)(struct device *, struct device_attribute *, char *)' [-Werror=incompatible-pointer-types] 236 | static DEVICE_ATTR_RW(inject_error); | ^~~~~~~~~~~~ include/linux/sysfs.h:104:10: note: in definition of macro '__ATTR' 104 | .show = _show, | ^~~~~ >> include/linux/device.h:130:45: note: in expansion of macro '__ATTR_RW' 130 | struct device_attribute dev_attr_##_name = __ATTR_RW(_name) | ^~~~~~~~~ >> drivers/bus/bt1-axi.c:236:8: note: in expansion of macro 'DEVICE_ATTR_RW' 236 | static DEVICE_ATTR_RW(inject_error); | ^~~~~~~~~~~~~~ drivers/bus/bt1-axi.c:236:23: note: (near initialization for 'dev_attr_inject_error.show') 236 | static DEVICE_ATTR_RW(inject_error); | ^~~~~~~~~~~~ include/linux/sysfs.h:104:10: note: in definition of macro '__ATTR' 104 | .show = _show, | ^~~~~ >> include/linux/device.h:130:45: note: in expansion of macro '__ATTR_RW' 130 | struct device_attribute dev_attr_##_name = __ATTR_RW(_name) | ^~~~~~~~~ >> drivers/bus/bt1-axi.c:236:8: note: in expansion of macro 'DEVICE_ATTR_RW' 236 | static DEVICE_ATTR_RW(inject_error); | ^~~~~~~~~~~~~~ >> drivers/bus/bt1-axi.c:236:23: error: initialization of 'ssize_t (*)(struct device *, struct device_attribute *, const char *, size_t)' {aka 'long int (*)(struct device *, struct device_attribute *, const char *, long unsigned int)'} from incompatible pointer type 'int (*)(struct device *, struct device_attribute *, const char *, size_t)' {aka 'int (*)(struct device *, struct device_attribute *, const char *, long unsigned int)'} [-Werror=incompatible-pointer-types] 236 | static DEVICE_ATTR_RW(inject_error); | ^~~~~~~~~~~~ include/linux/sysfs.h:105:11: note: in definition of macro '__ATTR' 105 | .store = _store, | ^~~~~~ >> include/linux/device.h:130:45: note: in expansion of macro '__ATTR_RW' 130 | struct device_attribute dev_attr_##_name = __ATTR_RW(_name) | ^~~~~~~~~ >> drivers/bus/bt1-axi.c:236:8: note: in expansion of macro 'DEVICE_ATTR_RW' 236 | static DEVICE_ATTR_RW(inject_error); | ^~~~~~~~~~~~~~ drivers/bus/bt1-axi.c:236:23: note: (near initialization for 'dev_attr_inject_error.store') 236 | static DEVICE_ATTR_RW(inject_error); | ^~~~~~~~~~~~ include/linux/sysfs.h:105:11: note: in definition of macro '__ATTR' 105 | .store = _store, | ^~~~~~ >> include/linux/device.h:130:45: note: in expansion of macro '__ATTR_RW' 130 | struct device_attribute dev_attr_##_name = __ATTR_RW(_name) | ^~~~~~~~~ >> drivers/bus/bt1-axi.c:236:8: note: in expansion of macro 'DEVICE_ATTR_RW' 236 | static DEVICE_ATTR_RW(inject_error); | ^~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +236 drivers/bus/bt1-axi.c 215 216 static int inject_error_store(struct device *dev, 217 struct device_attribute *attr, 218 const char *data, size_t count) 219 { 220 struct bt1_axi *axi = dev_get_drvdata(dev); 221 222 /* 223 * Performing unaligned read from the memory will cause the CM2 bus 224 * error while unaligned writing - the AXI bus write error handled 225 * by this driver. 226 */ 227 if (!strncmp(data, "bus", 3)) 228 readb(axi->qos_regs); 229 else if (!strncmp(data, "unaligned", 9)) 230 writeb(0, axi->qos_regs); 231 else 232 return -EINVAL; 233 234 return count; 235 } > 236 static DEVICE_ATTR_RW(inject_error); 237 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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