Linux On My Samsung

What I'm doing wrong as I keep getting the warning below? kimmo@linux-7fo4:~/samsung> make make -C /lib/modules/3.1.0-1.2-desktop/build M=/home/kimmo/samsung modules make[1]: Siirrytään hakemistoon "/usr/src/linux-3.1.0-1.2-obj/x86_64/desktop" CC [M] /home/kimmo/samsung/samsung-backlight.o...