device files not created

[Alexandre P. <ale...@gm...>]

Hi,

I've run into a really annoying issue on Ubuntu 12.04: the FireWire
device files are not created, even though the device is attached and
is powered from the FireWire cable.

The device is Focusrite Saffire PRO24.

$ uname -a
Linux darkroom 3.2.0-24-generic-pae #39-Ubuntu SMP Mon May 21 18:54:21
UTC 2012 i686 i686 i386 GNU/Linux

$ lspci -k

05:00.0 FireWire (IEEE 1394): Reply Group Device 3044 (rev 46)
	Subsystem: Reply Group Device 3044
	Kernel modules: firewire-ohci

$ lsmod | grep -e 1394 -e firewire
firewire_ohci          40172  0
firewire_core          56906  1 firewire_ohci
crc_itu_t              12627  1 firewire_core

However

$ ls -l /dev/fw*

already says there are no such files or directories, and same for

$ grep . /sys/bus/firewire/devices/fw*/*_name

Also,

$ grep -e 1394 -e firewire /proc/interrupts

is silent too

I've absolutely no idea whatsoever what could be wrong. The same
configuration used to work on the previous version of Ubuntu with a
slightly older kernel (not sure about older/newer stack, though).

Complete output from ffado-diag is here: http://pastebin.com/iT0cW4bd

Alexandre Prokoudine
http://libregraphicsworld.org