This is probably not a complete list. drivers/usb/gadget/function/f_hid.c: In function 'f_hidg_read': drivers/usb/gadget/function/f_hid.c:253:4: error: implicit declaration of function 'free_ep_req' drivers/tty/serial/atmel_serial.c: In function 'atmel_flush_buffer': drivers/tty/serial/atmel_serial.c:1872:12: error: 'struct atmel_uart_port' has no member named 'tx_len' arch/mips/mm/tlbex.c: In function 'build_huge_handler_tail': arch/mips/mm/tlbex.c:763:6: error: 'cpu_has_ftlb' undeclared (first use in this function) arch/nios2/kernel/setup.c: In function ‘setup_arch’: arch/nios2/kernel/setup.c:198:2: error: implicit declaration of function ‘early_init_fdt_reserve_self’ In file included from arch/um/os-Linux/aio.c:13:0: build/arch/um/include/shared/init.h:129:26: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘__used’