Retrieving the Source Code & Building/Compiling the Modules

Hi

I followed the instructions on:
http://linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_Device_Drivers

"Developer's Approach"

When I edit drivers/media/dvb/ddbridge/ddbridge-core.c and do "make -C ../v4l", my changes are not compiled.

What I am doing wrong?

Thomas