DKMS make.log for cedarview-drm-20120717 for kernel 3.8.0-33-generic (i686)
make -C /lib/modules/3.8.0-33-generic/build M=`pwd` modules
make[1]: Entering directory `/usr/src/linux-headers-3.8.0-33-generic'
  CC [M]  /var/lib/dkms/cedarview-drm/20120717/build/drm_auth.o
  CC [M]  /var/lib/dkms/cedarview-drm/20120717/build/drm_buffer.o
  CC [M]  /var/lib/dkms/cedarview-drm/20120717/build/drm_bufs.o
/var/lib/dkms/cedarview-drm/20120717/build/drm_bufs.c: In function 'drm_mapbufs':
/var/lib/dkms/cedarview-drm/20120717/build/drm_bufs.c:1557:4: error: implicit declaration of function 'do_mmap' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make[2]: *** [/var/lib/dkms/cedarview-drm/20120717/build/drm_bufs.o] Error 1
make[1]: *** [_module_/var/lib/dkms/cedarview-drm/20120717/build] Error 2
make[1]: Leaving directory `/usr/src/linux-headers-3.8.0-33-generic'
make: *** [all] Error 2