make[2]: *** [drivers/net/wireless] Error 2
make[1]: *** [drivers/net] Error 2
make: *** [drivers] Error 2
board-rk30-box-rfkill.c

board-rk30-box-rfkill.c

net/built-in.o: In function `wiphy_rfkill_start_polling':
activity_stats.c

net/built-in.o: In function `rfkill_rk_set_power':
activity_stats.c

activity_stats.c

make: *** [.tmp_vmlinux1] Error 1
Cheers!
Comment