Following build warnings / errors noticed while building arm s3c6400_defconfig with clang tool chain. Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx> make --silent --keep-going --jobs=8 O=/home/tuxbuild/.cache/tuxmake/builds/1/build LLVM=1 LLVM_IAS=1 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- 'HOSTCC=sccache clang' 'CC=sccache clang' arch/arm/mach-s3c/s3c64xx.c:430:9: warning: The platform is deprecated and scheduled for removal. Please reach to the maintainers of the platform and linux-samsung-soc@xxxxxxxxxxxxxxx if you still use it.Without such feedback, the platform will be removed after 2024. [-W#pragma-messages] #pragma message "The platform is deprecated and scheduled for removal. " \ ^ 1 warning generated. arch/arm/mach-s3c/mach-crag6410.c:183:12: error: use of undeclared identifier 'KEY_VOLUMEUP' KEY(0, 0, KEY_VOLUMEUP), ^ arch/arm/mach-s3c/mach-crag6410.c:184:12: error: use of undeclared identifier 'KEY_HOME' KEY(0, 1, KEY_HOME), ^ arch/arm/mach-s3c/mach-crag6410.c:185:12: error: use of undeclared identifier 'KEY_VOLUMEDOWN' KEY(0, 2, KEY_VOLUMEDOWN), ^ arch/arm/mach-s3c/mach-crag6410.c:186:12: error: use of undeclared identifier 'KEY_HELP' KEY(0, 3, KEY_HELP), ^ arch/arm/mach-s3c/mach-crag6410.c:187:12: error: use of undeclared identifier 'KEY_MENU' KEY(0, 4, KEY_MENU), ^ arch/arm/mach-s3c/mach-crag6410.c:188:12: error: use of undeclared identifier 'KEY_MEDIA' KEY(0, 5, KEY_MEDIA), ^ arch/arm/mach-s3c/mach-crag6410.c:190:12: error: use of undeclared identifier 'KEY_DOWN'; did you mean 'SM_DOWN'? KEY(1, 1, KEY_DOWN), ^~~~~~~~ SM_DOWN include/linux/input/matrix_keypad.h:15:8: note: expanded from macro 'KEY' ((val) & 0xffff)) ^ include/linux/console.h:29:2: note: 'SM_DOWN' declared here SM_DOWN, ^ arch/arm/mach-s3c/mach-crag6410.c:191:12: error: use of undeclared identifier 'KEY_LEFT' KEY(1, 2, KEY_LEFT), ^ arch/arm/mach-s3c/mach-crag6410.c:192:12: error: use of undeclared identifier 'KEY_UP' KEY(1, 3, KEY_UP), ^ arch/arm/mach-s3c/mach-crag6410.c:193:12: error: use of undeclared identifier 'KEY_RIGHT' KEY(1, 4, KEY_RIGHT), ^ arch/arm/mach-s3c/mach-crag6410.c:194:12: error: use of undeclared identifier 'KEY_CAMERA' KEY(1, 5, KEY_CAMERA), ^ arch/arm/mach-s3c/mach-crag6410.c:199:17: error: invalid application of 'sizeof' to an incomplete type 'uint32_t[]' (aka 'unsigned int[]') .keymap_size = ARRAY_SIZE(crag6410_keymap), ^~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:55:32: note: expanded from macro 'ARRAY_SIZE' #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr)) ^~~~~ arch/arm/mach-s3c/mach-crag6410.c:210:11: error: use of undeclared identifier 'KEY_SUSPEND' .code = KEY_SUSPEND, ^ arch/arm/mach-s3c/mach-crag6410.c:212:11: error: use of undeclared identifier 'EV_KEY' .type = EV_KEY, ^ arch/arm/mach-s3c/mach-crag6410.c:217:11: error: use of undeclared identifier 'SW_FRONT_PROXIMITY' .code = SW_FRONT_PROXIMITY, ^ arch/arm/mach-s3c/mach-crag6410.c:219:11: error: use of undeclared identifier 'EV_SW' .type = EV_SW, ^ arch/arm/mach-s3c/mach-crag6410.c:225:14: error: invalid application of 'sizeof' to an incomplete type 'struct gpio_keys_button[]' .nbuttons = ARRAY_SIZE(crag6410_gpio_keys), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:55:32: note: expanded from macro 'ARRAY_SIZE' #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr)) ^~~~~ 17 errors generated. make[3]: *** [scripts/Makefile.build:250: arch/arm/mach-s3c/mach-crag6410.o] Error 1 Build compare results https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20221027/testrun/12686125/suite/build/test/gcc-8-s3c6400_defconfig/history/ Build log: https://builds.tuxbuild.com/2GhZbWVKwBdCV4AryWkU6kAZ37i/ -- Linaro LKFT https://lkft.linaro.org