Module piix cannot be unloaded due to unsafe usage

[Darin Strait <darin_strait@yahoo.com>]

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I have a i810e motherboard, PIII/866MHz/320MB, single 120 GB IDE udma4 disk, a 
CD-RW and an SMC 10/100 NIC. I am using the onboard audio and video.

I am running a stock debian kernel:
Linux kiyone 2.6.2-1-686 #1 Sat Feb 7 13:49:20 EST 2004 i686 GNU/Linux


My problem is the following message from boot time:

Module piix cannot be unloaded due to unsafe usage in 
include/linux/module.h:489

This seems to be true, since I can't modprobe -r to remove the piix module:
kiyone:/etc# lsmod | grep piix
ata_piix                8036  0
libata                 40928  1 ata_piix,[permanent]
piix                   12672  1 [unsafe]
ide_core              160952  3 ide_disk,ide_detect,piix

kiyone:/etc# modprobe -r piix
FATAL: Module piix is in use.

How much of a problem is this and what do I do to fix it?

Thanks,
- -d
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