[Bug 205232] Stalled USB transfer

[bugzilla-noreply at freebsd.org]

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

Ian Lepore <ian at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |ian at FreeBSD.org

--- Comment #1 from Ian Lepore <ian at FreeBSD.org> ---
This was showing signs of failing to attach because it was requesting more
power than the port could supply (although the hub on an rpi is configured as
self-powered and the ports should allow 500ma attachments).  I suggested
turning on hub debug to see if it would provide clues about the power, and
somehow that made it work.  Some kind of timing problem that was "cured" by the
extra debug output, maybe?

I also tried on my rpi-b attaching a thumb drive that requires 200ma, and it is
able to attach without any errors, so there's something more than just the
power involved I guess.

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