[Bug 205232] Stalled USB transfer

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=205232

            Bug ID: 205232
           Summary: Stalled USB transfer
           Product: Base System
           Version: 11.0-CURRENT
          Hardware: arm64
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: usb
          Assignee: freebsd-usb at FreeBSD.org
          Reporter: juraj at lutter.sk

Created attachment 164091
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=164091&action=edit
usb debug output

While attaching Toshiba G450 I get this error:

usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_STALLED, ignored)
usbd_setup_device_desc: getting device descriptor at addr 4 failed,
USB_ERR_STALLED

usbconfig:

ugen0.4: <Toshiba Incorporated> at usbus0
umass0: <Toshiba Incorporated Toshiba USB Storage, class 0/0, rev 1.10/0.00,
addr 4> on usbus0

this device negotiates only 100mA while it needs the ports to switch to 500mA.

Ian Lepore suggested to set hw.usb.uhub.debug=9, then it loads and works.
Setting hw.usb.uhub.debug=0 after the device has been attached is OK.

See attachment for debug info.

uname -a:
FreeBSD rpi2 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r290273: Tue Nov  3 05:23:56
UTC 2015     root at releng2.nyi.freebsd.org:/usr/obj/arm.armv6/usr/src/sys/RPI2 
arm

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