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Date: Wed, 20 May 2009 22:27:19 -0500 (CDT)
From: Greg Rivers <gcr+freebsd-current@tharned.org>
To: freebsd-current@freebsd.org
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Subject: USB-to-serial adapter works on -STABLE but not -CURRENT
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I have a Belkin USB serial adapter 
(http://catalog.belkin.com/IWCatProductPage.process?Product_Id=459431) 
that works with the umct(4) driver under 7.2-STABLE.  When the adapter is 
plugged in the driver attaches, /dev/cuaU0 is created, and I can connect 
with cu(1) and type at a modem.

But on 8.0-CURRENT, only the ugen driver attaches and no /dev/cuaU* device 
is created.  "usbconfig dump_device_desc" shows:

ugen0.2: <Belkin Components Belkin USB PDA Adapter> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON

   bLength = 0x0012
   bDescriptorType = 0x0001
   bcdUSB = 0x0110
   bDeviceClass = 0x0000
   bDeviceSubClass = 0x0000
   bDeviceProtocol = 0x0000
   bMaxPacketSize0 = 0x0010
   idVendor = 0x050d
   idProduct = 0x0109
   bcdDevice = 0x0102
   iManufacturer = 0x0001  <Belkin USB PDA Adapter>
   iProduct = 0x0002  <retrieving string failed>
   iSerialNumber = 0x0003  <106930>
   bNumConfigurations = 0x0001

Why does umct fail to attach under 8.0-CURRENT?

-- 
Greg Rivers