Mine

sebastian@htpc:~/v4l-dvb$ patch -p0 < audioroutes.diff
can't find file to patch at input line 4
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|diff -r 025ebbfcfcff linux/drivers/media/video/cx88/cx88-cards.c
|--- a/linux/drivers/media/video/cx88/cx88-cards.c      Sat Mar 10 08:30:12 2007 -0200
|+++ b/linux/drivers/media/video/cx88/cx88-cards.c      Thu Mar 15 18:43:56 2007 +0000
--------------------------
File to patch: