usb/154710: Conexant USB Modem is not working in 8.x. In 7.x it works.

[Benedikt Niessen]

>Number:         154710
>Category:       usb
>Synopsis:       Conexant USB Modem is not working in 8.x. In 7.x it works.
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-usb
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Feb 12 16:30:07 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Benedikt Niessen
>Release:        8.1
>Organization:
>Environment:
FreeBSD faxgw01.niessen.ch 8.1-RELEASE FreeBSD 8.1-RELEASE #0: Mon Jul 19 02:36:49 UTC 2010     root at mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
I have a Conexant USB 56k Modem. I freshly installed FreeBSD 8.1 AMD64. When I plugged in my Conexant USB Modem I get the message

usb_alloc_device: set address 2 failed (USB_ERR_TIMEOUT, ignored)
usb_alloc_device: getting device descriptor at addr 2 failed, USB_ERR_STALLED
usbd_req_re_enumerate: addr=2, set address failed! (USB_ERR_STALLED, ignored)
usbd_req_re_enumerate: getting device descriptor at addr 2 failed, USB_ERR_STALLED

I reinstalled a FreeBSD 7.3 AMD64 system. When I plugged in my USB Modem I get the message 

ugen0: <Conexant USB Modem, class 2/0, rev 1.10/1.00, addr 2> on uhub0
>How-To-Repeat:
Install FreeBSD 8.1 and plug in the Conexant 56k USB Modem
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: