ucom doesn't work in 6.1-PRERELEASE?

[Torfinn Ingolfsen]

Hello,

When I attatch my usb-to-serial based AVR programmer (an avrusb500) to a
machine running FreeBSD 6.1-prerelease, it shows up in /var/log/messages
as:
Mar 11 17:25:03 kg-fil kernel: ucom0: FTDI USB <-> Serial, rev 1.10/4.00, addr 2

However, there is no /dev/ucom0 entry.
Details:

root at kg-fil# uname -a
FreeBSD kg-fil.kg4.no 6.1-PRERELEASE FreeBSD 6.1-PRERELEASE #5: Sat Mar 11 15:05:47 CET 2006     root at kg-fil.kg4.no:/usr/obj/usr/src/sys/FIL60  amd64

root at kg-fil# kldstat
Id Refs Address            Size     Name
 1    9 0xffffffff80100000 8b6820   kernel
 2    1 0xffffffff809b7000 67e0     snd_ich.ko
 3    2 0xffffffff809be000 346a8    sound.ko
 4    1 0xffffffffa7c19000 1cd      blank_saver.ko
 5    1 0xffffffffa7cb0000 10b6     uftdi.ko
 6    1 0xffffffffa7cb2000 112f     ucom.ko

(as you can see, both utfdi and ucom is loaded).

root at kg-fil# usbdevs -v
Controller /dev/usb0:
addr 1: full speed, self powered, config 1, OHCI root hub(0x0000), nVidia(0x0000), rev 1.00
 port 1 powered
 port 2 powered
 port 3 powered
 port 4 addr 2: full speed, power 90 mA, config 1, USB <-> Serial(0x6001), FTDI(0x0403), rev 4.00
 port 5 powered
 port 6 powered
 port 7 powered
 port 8 powered
 port 9 powered
 port 10 powered

But, no /dev/ucom* :
root at kg-fil# ls -l /dev/ucom*
ls: /dev/ucom*: No such file or directory
root at kg-fil# ls -l /dev/usb*
crw-rw----  1 root  operator    0,  30 Mar 11 15:50 /dev/usb
crw-rw----  1 root  operator    0,  29 Mar 11 15:50 /dev/usb0
crw-rw----  1 root  operator    0,  31 Mar 11 15:50 /dev/usb1

even if the usb entries are there.
root at kg-fil# ps ax | grep usbd
  405  ??  Is     0:00.00 /usr/sbin/usbd

For comparison, the device works fine under 5.4-stable:

root at kg-work# uname -a
FreeBSD kg-work.kg4.no 5.4-STABLE FreeBSD 5.4-STABLE #5: Sat Dec 31 16:54:14 CET 2005     root at kg-work.kg4.no:/usr/obj/usr/src/sys/SS51G  i386

Mar 11 17:44:17 kg-work kernel: ucom0: FTDI USB <-> Serial, rev 1.10/4.00, addr 2

root at kg-work# ls -l /dev/ucom*
crw-rw----  1 uucp  dialer  220, 128 Jan  4 17:10 /dev/ucom0
root at kg-work# ls -l /dev/usb*
crw-rw----  1 root  operator  239, 255 Jan  4 17:10 /dev/usb
crw-rw----  1 root  operator  239,   0 Jan  4 17:10 /dev/usb0
crw-rw----  1 root  operator  239,   1 Jan  4 17:10 /dev/usb1
crw-rw----  1 root  operator  239,   2 Jan  4 17:10 /dev/usb2
crw-rw----  1 root  operator  239,   3 Jan  4 17:10 /dev/usb3

What's wrong, and how do I fix it?
-- 
Regards, 
Torfinn Ingolfsen,
Norway