USB device repeatedly disconnected

[Denny Lin]

Hi,

I have a Texas Instruments OMAP4440 connected via a USB cable to my
laptop running FreeBSD 10.0-RELEASE amd64.

This is the output of usbconfig -d 1.7 dump_device_desc:
ugen1.7: <OMAP4440 Texas Instruments> at usbus1, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (100mA)

  bLength = 0x0012 
  bDescriptorType = 0x0001 
  bcdUSB = 0x0210 
  bDeviceClass = 0x00ff 
  bDeviceSubClass = 0x00ff 
  bDeviceProtocol = 0x00ff 
  bMaxPacketSize0 = 0x0040 
  idVendor = 0x0451 
  idProduct = 0xd010 
  bcdDevice = 0x0000 
  iManufacturer = 0x0021  <Texas Instruments>
  iProduct = 0x0025  <OMAP4440>
  iSerialNumber = 0x0000  <no string>
  bNumConfigurations = 0x0001

For some reason, it repeatedly disconnects:
ugen1.7: <Texas Instruments> at usbus1 (disconnected)
ugen1.7: <Texas Instruments> at usbus1
ugen1.7: <Texas Instruments> at usbus1 (disconnected)
ugen1.7: <Texas Instruments> at usbus1
ugen1.7: <Texas Instruments> at usbus1 (disconnected)
ugen1.7: <Texas Instruments> at usbus1

These messages also appear in /var/log/messages:
Sep 21 17:46:56 localhost kernel: ugen1.7: <Texas Instruments> at usbus1
Sep 21 17:46:56 localhost devd: Executing 'env LD_PRELOAD=/usr/local/lib/libhal.so:/usr/local/lib/libdbus-1.so:/usr/local/lib/libcuse4bsd.so /usr/local/etc/rc.d/webcamd   start ugen1.7'
Sep 21 17:46:56 localhost devd: Executing 'logger Unknown USB device: vendor 0x0451 product 0xd010 bus uhub3'
Sep 21 17:46:56 localhost root: Unknown USB device: vendor 0x0451 product 0xd010 bus uhub3
Sep 21 17:46:59 localhost kernel: ugen1.7: <Texas Instruments> at usbus1 (disconnected)
Sep 21 17:47:00 localhost kernel: ugen1.7: <Texas Instruments> at usbus1
Sep 21 17:47:00 localhost devd: Executing 'env LD_PRELOAD=/usr/local/lib/libhal.so:/usr/local/lib/libdbus-1.so:/usr/local/lib/libcuse4bsd.so /usr/local/etc/rc.d/webcamd   start ugen1.7'
Sep 21 17:47:00 localhost devd: Executing 'logger Unknown USB device: vendor 0x0451 product 0xd010 bus uhub3'
Sep 21 17:47:00 localhost root: Unknown USB device: vendor 0x0451 product 0xd010 bus uhub3
Sep 21 17:47:03 localhost kernel: ugen1.7: <Texas Instruments> at usbus1 (disconnected)
Sep 21 17:47:04 localhost kernel: ugen1.7: <Texas Instruments> at usbus1
Sep 21 17:47:04 localhost devd: Executing 'env LD_PRELOAD=/usr/local/lib/libhal.so:/usr/local/lib/libdbus-1.so:/usr/local/lib/libcuse4bsd.so /usr/local/etc/rc.d/webcamd   start ugen1.7'

The problem seems similar to this one: https://www.mail-archive.com/freebsd-usb@freebsd.org/msg08372.html

Would it be possible to fix this? Thanks.

-- 
Denny Lin