tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git kobject-const head: 987a03146b7c09014c6878256fac24d4392ce68f commit: fce24d2e367325f1f7357a12dcf7b0c09e744a5f [15/18] driver core: make struct bus_type.uevent() take a const * config: ia64-allmodconfig compiler: ia64-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=fce24d2e367325f1f7357a12dcf7b0c09e744a5f 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 fce24d2e367325f1f7357a12dcf7b0c09e744a5f # 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=ia64 SHELL=/bin/bash drivers/bus/mhi/ep/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All errors (new ones prefixed by >>): >> drivers/bus/mhi/ep/main.c:1580:19: 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] 1580 | .uevent = mhi_ep_uevent, | ^~~~~~~~~~~~~ drivers/bus/mhi/ep/main.c:1580:19: note: (near initialization for 'mhi_ep_bus_type.uevent') {standard input}: Assembler messages: {standard input}:1289: Error: Register number out of range 0..4 {standard input}:1290: Error: Register number out of range 0..4 {standard input}:1290: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 56 {standard input}:1290: Warning: Only the first path encountering the conflict is reported {standard input}:1289: Warning: This is the location of the conflicting usage {standard input}:1294: Error: Register number out of range 0..4 {standard input}:4128: Error: Register number out of range 0..4 {standard input}:4129: Error: Register number out of range 0..4 {standard input}:4129: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 59 {standard input}:4129: Warning: Only the first path encountering the conflict is reported {standard input}:4128: Warning: This is the location of the conflicting usage {standard input}:4133: Error: Register number out of range 0..4 cc1: some warnings being treated as errors vim +1580 drivers/bus/mhi/ep/main.c d434743e5cac35 Manivannan Sadhasivam 2022-04-05 1575 d434743e5cac35 Manivannan Sadhasivam 2022-04-05 1576 struct bus_type mhi_ep_bus_type = { d434743e5cac35 Manivannan Sadhasivam 2022-04-05 1577 .name = "mhi_ep", d434743e5cac35 Manivannan Sadhasivam 2022-04-05 1578 .dev_name = "mhi_ep", d434743e5cac35 Manivannan Sadhasivam 2022-04-05 1579 .match = mhi_ep_match, c268c0a8a33047 Manivannan Sadhasivam 2022-04-05 @1580 .uevent = mhi_ep_uevent, d434743e5cac35 Manivannan Sadhasivam 2022-04-05 1581 }; d434743e5cac35 Manivannan Sadhasivam 2022-04-05 1582 :::::: The code at line 1580 was first introduced by commit :::::: c268c0a8a33047cd957fecc1349d09a68eb6ad9e bus: mhi: ep: Add uevent support for module autoloading :::::: TO: Manivannan Sadhasivam :::::: CC: Greg Kroah-Hartman -- 0-DAY CI Kernel Test Service https://01.org/lkp