drivers/built-in.o: In function `diagfwd_disconnect':
/home/jimmie/u8220-build/kernel/drivers/char/diag/diagfwd.c:516: undefined reference to `diag_close'
drivers/built-in.o: In function `diagfwd_connect':
/home/jimmie/u8220-build/kernel/drivers/char/diag/diagfwd.c:490: undefined reference to `diag_open'
/home/jimmie/u8220-build/kernel/drivers/char/diag/diagfwd.c:504: undefined reference to `diag_read'
drivers/built-in.o: In function `diag_device_write':
/home/jimmie/u8220-build/kernel/drivers/char/diag/diagfwd.c:111: undefined reference to `diag_write'
drivers/built-in.o: In function `diag_read_work_fn':
/home/jimmie/u8220-build/kernel/drivers/char/diag/diagfwd.c:630: undefined reference to `diag_read'
drivers/built-in.o: In function `diagfwd_init':
/home/jimmie/u8220-build/kernel/drivers/char/diag/diagfwd.c:696: undefined reference to `diag_usb_register'
drivers/built-in.o: In function `diagfwd_exit':
/home/jimmie/u8220-build/kernel/drivers/char/diag/diagfwd.c:726: undefined reference to `diag_close'
/home/jimmie/u8220-build/kernel/drivers/char/diag/diagfwd.c:730: undefined reference to `diag_usb_unregister'
net/built-in.o: In function `wiphy_rfkill_start_polling':
/home/jimmie/u8220-build/kernel/net/wireless/core.c:509: undefined reference to `rfkill_resume_polling'
make[1]: *** [.tmp_vmlinux1] Error 1
make: *** [sub-make] Error 2