tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git kobject-const head: 6e2a4c41f786eaf21f2c1daadfaf524d1954ed4c commit: 9ae4fcf3c0ac99bf8ffe0aa8db744b3627b54b3d [17/18] driver core: make struct bus_type.uevent() take a const * config: sparc64-buildonly-randconfig-r006-20221012 compiler: sparc64-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=9ae4fcf3c0ac99bf8ffe0aa8db744b3627b54b3d 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 9ae4fcf3c0ac99bf8ffe0aa8db744b3627b54b3d # 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=sparc64 SHELL=/bin/bash arch/sparc/kernel/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All errors (new ones prefixed by >>): arch/sparc/kernel/vio.c: In function 'vio_hotplug': >> arch/sparc/kernel/vio.c:51:52: error: passing argument 1 of 'to_vio_dev' discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers] 51 | const struct vio_dev *vio_dev = to_vio_dev(dev); | ^~~ In file included from arch/sparc/kernel/vio.c:20: arch/sparc/include/asm/vio.h:491:57: note: expected 'struct device *' but argument is of type 'const struct device *' 491 | static inline struct vio_dev *to_vio_dev(struct device *dev) | ~~~~~~~~~~~~~~~^~~ cc1: all warnings being treated as errors vim +51 arch/sparc/kernel/vio.c e53e97ce3c7119 arch/sparc64/kernel/vio.c David S. Miller 2007-07-09 48 9ae4fcf3c0ac99 arch/sparc/kernel/vio.c Greg Kroah-Hartman 2022-09-29 49 static int vio_hotplug(const struct device *dev, struct kobj_uevent_env *env) 5bde2c9be701c4 arch/sparc/kernel/vio.c John Paul Adrian Glaubitz 2016-04-14 50 { 5bde2c9be701c4 arch/sparc/kernel/vio.c John Paul Adrian Glaubitz 2016-04-14 @51 const struct vio_dev *vio_dev = to_vio_dev(dev); 5bde2c9be701c4 arch/sparc/kernel/vio.c John Paul Adrian Glaubitz 2016-04-14 52 5bde2c9be701c4 arch/sparc/kernel/vio.c John Paul Adrian Glaubitz 2016-04-14 53 add_uevent_var(env, "MODALIAS=vio:T%sS%s", vio_dev->type, vio_dev->compat); 5bde2c9be701c4 arch/sparc/kernel/vio.c John Paul Adrian Glaubitz 2016-04-14 54 return 0; 5bde2c9be701c4 arch/sparc/kernel/vio.c John Paul Adrian Glaubitz 2016-04-14 55 } 5bde2c9be701c4 arch/sparc/kernel/vio.c John Paul Adrian Glaubitz 2016-04-14 56 :::::: The code at line 51 was first introduced by commit :::::: 5bde2c9be701c4583f0a9243bd46590ec401bfba sparc: Implement and wire up vio_hotplug for vio. :::::: TO: Adrian Glaubitz :::::: CC: David S. Miller -- 0-DAY CI Kernel Test Service https://01.org/lkp