Problem with building linuxtv.org's V4L-DVB drivers

I'm running kernel-ml-2.6.35-14.1.el5.elrepo

I'm following the info on:
http://linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_Device_Drivers

First I run:
git clone git://linuxtv.org/media_build.git
cd media_build

Then when I run ./build, it stops with the following error:
.... snip...
/root/media_build/v4l/radio-rtrack2.c: In function 'rtrack2_alloc':
/root/media_build/v4l/radio-rtrack2.c:46: error: implicit declaration of function 'kzalloc'
/root/media_build/v4l/radio-rtrack2.c:46: warning: return makes pointer from integer without a cast
make[3]: *** [/root/media_build/v4l/radio-rtrack2.o] Error 1 make[2]: *** [_module_/root/media_build/v4l] Error 2 make[1]: *** [default] Error 2
make: *** [all] Error 2
build failed at ./build line 410.

Hopefully this can fixed.

Joe Henley