From mboxrd@z Thu Jan  1 00:00:00 1970
From: erik quanstrom <quanstro@labs.coraid.com>
Date: Thu,  1 Sep 2011 11:44:08 -0400
To: 9fans@9fans.net
Message-ID: <5bdb6bd331a65b59b2cc1028f41950a6@coraid.com>
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Subject: [9fans] usbuhci bug
Topicbox-Message-UUID: 17c4865e-ead7-11e9-9d60-3106f5b1d025

speaking of usb ...

using a serial-to-usb converter and usb/serial, i've been able to
put my terminal into an unusable state on a fairly regular basis.

here's the step-by-step.
1.  run usb/serial
2.  wait for a usb disconnect due to a failed read
3.  notice that your machine is having trouble scheduling.
4.  note that usbuhci is blasting 100,000 interrupts/sec!
5.  try to slay and restart usb/serial ... no joy there.
6.  give up and reboot terminal.

unfortunately, i don't have any time to dig into this one atm.

- erik