missing RTser0 device

[Johannes Holtz via Xenomai]

Hi,

I work with an old i686 2.6 Xenomai.
As per documentation I note my interface details:

setserial /dev/ttyS0
/dev/ttyS0, UART: 16550A, Port: 0x03f8, IRQ: 4

Then remove the default driver:

setserial /dev/ttyS0 uart none

and insert the xenomai driver

modprobe xeno_16550A io=0x3f8 irq=4


All calls succeed and I get the folder /proc/xenomai/rtdm/rtser0/ . 
However the /dev/rtser0 device is not created. I have no errors to show 
you.

Am I missing anything?