ubuntu@ubuntu:/usr/src/modules/spca5xx$ make
   Building SPCA5XX driver for 2.5/2.6 kernel.
   Remember: you must have read/write access to your kernel source tree.
make -C /lib/modules/`uname -r`/build SUBDIRS=/usr/src/modules/spca5xx CC=cc modules
make[1]: Entering directory `/usr/src/linux-headers-2.6.15-23-386'
mkdir: cannot create directory `/usr/src/modules/spca5xx/.tmp_versions': Permission denied
make[1]: *** [crmodverdir] Error 1
make[1]: Leaving directory `/usr/src/linux-headers-2.6.15-23-386'
make: *** [default] Error 2
ubuntu@ubuntu:/usr/src/modules/spca5xx$