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Unloading the low-level driver module of a FireWire host can lead to all sorts of trouble if a raw1394 userspace client is using the host. Just disallow it by incrementing the LLD's module reference count on a RAW1394_REQ_SET_CARD write operation. Decrement it when the file is closed. This feature wouldn't be relevant if "modprobe -r video1394" or "modprobe -r dv1394" didn't automatically unload ohci1394 too. http://bugzilla.kernel.org/show_bug.cgi?id=7701 Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Dan Dennedy <dan@dennedy.org>