Hi all, After merging the driver-core tree, today's linux-next build (powerpc ppc64_defconfig) failed like this: arch/powerpc/platforms/book3s/vas-api.c: In function 'vas_register_coproc_api': arch/powerpc/platforms/book3s/vas-api.c:590:38: error: assignment to 'char * (*)(const struct device *, umode_t *)' {aka 'char * (*)(const struct device *, short unsigned int *)'} from incompatible pointer type 'char * (*)(struct device *, umode_t *)' {aka 'char * (*)(struct device *, short unsigned int *)'} [-Werror=incompatible-pointer-types] 590 | coproc_device.class->devnode = coproc_devnode; | ^ drivers/misc/cxl/file.c: In function 'cxl_file_init': drivers/misc/cxl/file.c:687:28: error: assignment to 'char * (*)(const struct device *, umode_t *)' {aka 'char * (*)(const struct device *, short unsigned int *)'} from incompatible pointer type 'char * (*)(struct device *, umode_t *)' {aka 'char * (*)(struct device *, short unsigned int *)'} [-Werror=incompatible-pointer-types] 687 | cxl_class->devnode = cxl_devnode; | ^ Caused by commit ff62b8e6588f ("driver core: make struct class.devnode() take a const *") I have used the driver-core tree from next-20221125 for today. -- Cheers, Stephen Rothwell