tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git bus_cleanup head: 5447398fb1728b20784bfde814b2d524b9cb051a commit: 16f725b161c2f7db9ecd3b3af38b87ad6078ac4e [22/36] driver core: bus: mark the struct bus_type for sysfs callbacks as constant config: arc-allmodconfig (https://download.01.org/0day-ci/archive/20230301/202303010953.nAJe0ITf-lkp@xxxxxxxxx/config) compiler: arceb-elf-gcc (GCC) 12.1.0 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/gregkh/driver-core.git/commit/?id=16f725b161c2f7db9ecd3b3af38b87ad6078ac4e git remote add driver-core https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git git fetch --no-tags driver-core bus_cleanup git checkout 16f725b161c2f7db9ecd3b3af38b87ad6078ac4e # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arc olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arc SHELL=/bin/bash drivers/ata/pata_parport/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202303010953.nAJe0ITf-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from include/linux/kobject.h:20, from include/linux/module.h:21, from drivers/ata/pata_parport/pata_parport.c:7: >> drivers/ata/pata_parport/pata_parport.c:618:20: error: initialization of 'ssize_t (*)(const struct bus_type *, const char *, size_t)' {aka 'int (*)(const struct bus_type *, const char *, unsigned int)'} from incompatible pointer type 'ssize_t (*)(struct bus_type *, const char *, size_t)' {aka 'int (*)(struct bus_type *, const char *, unsigned int)'} [-Werror=incompatible-pointer-types] 618 | static BUS_ATTR_WO(new_device); | ^~~~~~~~~~ include/linux/sysfs.h:135:19: note: in definition of macro '__ATTR_WO' 135 | .store = _name##_store, \ | ^~~~~ drivers/ata/pata_parport/pata_parport.c:618:8: note: in expansion of macro 'BUS_ATTR_WO' 618 | static BUS_ATTR_WO(new_device); | ^~~~~~~~~~~ drivers/ata/pata_parport/pata_parport.c:618:20: note: (near initialization for 'bus_attr_new_device.store') 618 | static BUS_ATTR_WO(new_device); | ^~~~~~~~~~ include/linux/sysfs.h:135:19: note: in definition of macro '__ATTR_WO' 135 | .store = _name##_store, \ | ^~~~~ drivers/ata/pata_parport/pata_parport.c:618:8: note: in expansion of macro 'BUS_ATTR_WO' 618 | static BUS_ATTR_WO(new_device); | ^~~~~~~~~~~ drivers/ata/pata_parport/pata_parport.c:650:20: error: initialization of 'ssize_t (*)(const struct bus_type *, const char *, size_t)' {aka 'int (*)(const struct bus_type *, const char *, unsigned int)'} from incompatible pointer type 'ssize_t (*)(struct bus_type *, const char *, size_t)' {aka 'int (*)(struct bus_type *, const char *, unsigned int)'} [-Werror=incompatible-pointer-types] 650 | static BUS_ATTR_WO(delete_device); | ^~~~~~~~~~~~~ include/linux/sysfs.h:135:19: note: in definition of macro '__ATTR_WO' 135 | .store = _name##_store, \ | ^~~~~ drivers/ata/pata_parport/pata_parport.c:650:8: note: in expansion of macro 'BUS_ATTR_WO' 650 | static BUS_ATTR_WO(delete_device); | ^~~~~~~~~~~ drivers/ata/pata_parport/pata_parport.c:650:20: note: (near initialization for 'bus_attr_delete_device.store') 650 | static BUS_ATTR_WO(delete_device); | ^~~~~~~~~~~~~ include/linux/sysfs.h:135:19: note: in definition of macro '__ATTR_WO' 135 | .store = _name##_store, \ | ^~~~~ drivers/ata/pata_parport/pata_parport.c:650:8: note: in expansion of macro 'BUS_ATTR_WO' 650 | static BUS_ATTR_WO(delete_device); | ^~~~~~~~~~~ cc1: some warnings being treated as errors vim +618 drivers/ata/pata_parport/pata_parport.c 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 556 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 557 static ssize_t new_device_store(struct bus_type *bus, const char *buf, 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 558 size_t count) 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 559 { 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 560 char port[12] = "auto"; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 561 char protocol[8] = "auto"; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 562 int mode = -1, unit = -1, delay = -1; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 563 struct pi_protocol *pr, *pr_wanted; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 564 struct device_driver *drv; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 565 struct parport *parport; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 566 int port_num, port_wanted, pr_num; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 567 bool ok = false; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 568 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 569 if (sscanf(buf, "%11s %7s %d %d %d", 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 570 port, protocol, &mode, &unit, &delay) < 1) 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 571 return -EINVAL; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 572 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 573 if (sscanf(port, "parport%u", &port_wanted) < 1) { 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 574 if (strcmp(port, "auto")) { 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 575 pr_err("invalid port name %s\n", port); 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 576 return -EINVAL; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 577 } 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 578 port_wanted = -1; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 579 } 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 580 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 581 drv = driver_find(protocol, &pata_parport_bus_type); 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 582 if (!drv) { 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 583 if (strcmp(protocol, "auto")) { 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 584 pr_err("protocol %s not found\n", protocol); 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 585 return -EINVAL; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 586 } 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 587 pr_wanted = NULL; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 588 } else { 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 589 pr_wanted = container_of(drv, struct pi_protocol, driver); 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 590 } 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 591 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 592 mutex_lock(&pi_mutex); 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 593 /* walk all parports */ 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 594 idr_for_each_entry(&parport_list, parport, port_num) { 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 595 if (port_num == port_wanted || port_wanted == -1) { 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 596 parport = parport_find_number(port_num); 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 597 if (!parport) { 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 598 pr_err("no such port %s\n", port); 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 599 mutex_unlock(&pi_mutex); 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 600 return -ENODEV; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 601 } 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 602 /* walk all protocols */ 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 603 idr_for_each_entry(&protocols, pr, pr_num) { 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 604 if (pr == pr_wanted || !pr_wanted) 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 605 if (pi_init_one(parport, pr, mode, unit, 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 606 delay)) 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 607 ok = true; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 608 } 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 609 parport_put_port(parport); 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 610 } 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 611 } 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 612 mutex_unlock(&pi_mutex); 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 613 if (!ok) 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 614 return -ENODEV; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 615 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 616 return count; 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 617 } 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 @618 static BUS_ATTR_WO(new_device); 246a1c4c6b7ffb drivers/ata/pata_parport.c Ondrej Zary 2023-01-23 619 :::::: The code at line 618 was first introduced by commit :::::: 246a1c4c6b7ffba88a2553d2b88f7b6280f253a2 ata: pata_parport: add driver (PARIDE replacement) :::::: TO: Ondrej Zary <linux@xxxxxxx> :::::: CC: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
