Well it doesn't seem quite as simple as that.  I now have blacklisted
all of the following drivers

---------------------------
$ cat /etc/modprobe.d/blacklist-cx8800
# 2.6.20.3 kernel seems to find the analog driver
# for the PCHDTV 5500 card and fail to load
# the dvb driver, so blacklist it
blacklist cx8800
blacklist cx8802
blacklist cx88_alsa
blacklist cx88xx
-----------------------------

yet still the cx88xx and cx8800 drivers are getting loaded despite being
blacklisted.


*following reboot*
-----------------------------
$ lsmod |grep cx
cx8800                 41356  0 
cx88xx                 74916  1 cx8800
video_buf              29956  3 cx8800,cx88xx,bttv
ir_common              34564  2 cx88xx,bttv
compat_ioctl32         11520  2 cx8800,bttv
btcx_risc               6920  3 cx8800,cx88xx,bttv
i2c_algo_bit            9864  3 cx88xx,bttv,ivtv
cx2341x                14084  1 ivtv
tveeprom               19472  3 cx88xx,bttv,ivtv
videodev               30080  4 cx8800,cx88xx,bttv,ivtv
v4l2_common            29056  9 
cx8800,bttv,compat_ioctl32,msp3400,saa7115,tuner,ivtv,cx2341x,videodev
v4l1_compat            15236  3 cx8800,ivtv,videodev
i2c_core               26880  12 
cx88xx,bttv,lirc_i2c,i2c_ec,msp3400,saa7115,tuner,ivtv,nvidia,i2c_algo_bit,tveeprom,i2c_nforce2
----------------------

Note that the cx8802 and cx88_alsa drivers are not being loaded but the
cx8800 and cx88xx drivers are being loaded.  Perhaps some other driver
is pulling them in, but they don't seem to be in use, since I can easily
remove them manually with

modprobe -r cx8800

I can easily remove the drivers and emulate the blacklist by putting
this line in rc.local, but that still begs the question as to why
blacklisted drivers are allowed to load in the first place with the
custom kernel.  This does NOT happen with the generic kernel, which I
find quite curious.

Call it a bug or not, but I call it disturbing.

Dunno,

-Jim Heck

-- 
modprobe.d blacklist of cx8800 driver does not work for recompiled kernel
https://launchpad.net/bugs/98982

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