Re: kern/46696 (uhub disables port where USB keyboard attached)

[Andreas Gustafsson <gson%gson.org@localhost>]

Nick Hudson wrote:
> Can you test today's -current again and then try -current with this 
> patch and report results.

I have now tested this using -current sources from 2013.09.12.07.26.13.

With the unmodified -current soruces (without your patch), I got
"uhub2: device problem, disabling port 2" in 4 boots out of 10.

With your patch, I got "uhub2: device problem, disabling port 2"
in 5 boots out of 10.  In other words, the patch made no statistically
significant difference.

Here is a diff between the relevant parts of the dmesg output from a
successful boot and an unsuccessful one:

  < uhidev0 at uhub2 port 2 configuration 1 interface 0
  < uhidev0: Belkin Components USB-PS2 Adapter, rev 1.10/1.20, addr 3, iclass 
3/1
  < ukbd0 at uhidev0: 8 modifier keys, 6 key codes
  < wskbd0 at ukbd0: console keyboard, using wsdisplay0
  < uhidev1 at uhub2 port 2 configuration 1 interface 1
  < uhidev1: Belkin Components USB-PS2 Adapter, rev 1.10/1.20, addr 3, iclass 
3/1
  < ums0 at uhidev1: 5 buttons and Z dir
  < wsmouse0 at ums0 mux 0
  ---
  > uhub2: device problem, disabling port 2

Thank you for looking into this, and if there are any more tests I can
run, I will be happy to do so.
-- 
Andreas Gustafsson, gson%gson.org@localhost