2.5.50. input_event undefined --- any ideas

drivers/built-in.o: In function `kd_nosound':
drivers/built-in.o(.text+0x38bca): undefined reference to input_event' drivers/built-in.o(.text+0x38bdd): undefined reference to input_event'

also. what was the solution for ---

rch/i386/kernel/built-in.o: In function `do_suspend_lowlevel':
arch/i386/kernel/built-in.o(.data+0x14d8): undefined reference to save_processor_state' arch/i386/kernel/built-in.o(.data+0x14de): undefined reference to saved_context_esp' arch/i386/kernel/built-in.o(.data+0x14e3): undefined reference to saved_context_eax' arch/i386/kernel/built-in.o(.data+0x14e9): undefined reference to saved_context