tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git kobject-const head: ed9d0211c055e56f57141bc3a62b4ce7036083a2 commit: 57f0edb9a3d781a8a8817ae7005aa3c17076054c [15/18] driver core: make struct bus_type.uevent() take a const * config: parisc-randconfig-r034-20221002 compiler: hppa-linux-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=57f0edb9a3d781a8a8817ae7005aa3c17076054c git remote add driver-core https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git git fetch --no-tags driver-core kobject-const git checkout 57f0edb9a3d781a8a8817ae7005aa3c17076054c # 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=parisc SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All errors (new ones prefixed by >>): arch/parisc/kernel/drivers.c:418:31: warning: no previous prototype for 'create_tree_node' [-Wmissing-prototypes] 418 | struct parisc_device * __init create_tree_node(char id, struct device *parent) | ^~~~~~~~~~~~~~~~ >> arch/parisc/kernel/drivers.c:623:19: error: initialization of 'int (*)(const struct device *, struct kobj_uevent_env *)' from incompatible pointer type 'int (*)(struct device *, struct kobj_uevent_env *)' [-Werror=incompatible-pointer-types] 623 | .uevent = parisc_uevent, | ^~~~~~~~~~~~~ arch/parisc/kernel/drivers.c:623:19: note: (near initialization for 'parisc_bus_type.uevent') arch/parisc/kernel/drivers.c: In function 'parse_tree_node': arch/parisc/kernel/drivers.c:744:30: warning: suggest braces around empty body in an 'if' statement [-Wempty-body] 744 | /* nothing */; | ^ cc1: some warnings being treated as errors vim +623 arch/parisc/kernel/drivers.c ^1da177e4c3f415 Linus Torvalds 2005-04-16 619 ^1da177e4c3f415 Linus Torvalds 2005-04-16 620 struct bus_type parisc_bus_type = { ^1da177e4c3f415 Linus Torvalds 2005-04-16 621 .name = "parisc", ^1da177e4c3f415 Linus Torvalds 2005-04-16 622 .match = parisc_generic_match, 7246c31e45021bc Helge Deller 2008-12-25 @623 .uevent = parisc_uevent, 9b7c66822700434 Greg Kroah-Hartman 2017-06-06 624 .dev_groups = parisc_device_groups, ad3ed31c682d956 Russell King 2006-01-05 625 .probe = parisc_driver_probe, b86db40e1ecc910 Helge Deller 2018-03-04 626 .remove = __exit_p(parisc_driver_remove), ^1da177e4c3f415 Linus Torvalds 2005-04-16 627 }; ^1da177e4c3f415 Linus Torvalds 2005-04-16 628 :::::: The code at line 623 was first introduced by commit :::::: 7246c31e45021bc68688c4a8fd2bbb70b485d1ef parisc: add uevent helper for parisc bus :::::: TO: Helge Deller :::::: CC: Kyle McMartin -- 0-DAY CI Kernel Test Service https://01.org/lkp