Re: kern/56739: Hang during boot since recent USB changes

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

The following reply was made to PR kern/56739; it has been noted by GNATS.

From: Andreas Gustafsson <gson%gson.org@localhost>
To: Taylor R Campbell <riastradh%NetBSD.org@localhost>, gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/56739: Hang during boot since recent USB changes
Date: Wed, 9 Mar 2022 12:12:57 +0200

 Taylor,
 
 On March 5, you wrote:
 > Need to resolve this deadlock, perhaps by deferring uhci_poll_hub to a
 > USB task.
 [...]
 > Need to think more about that.
 
 Any progress on this?  I have now also seen a couple of hangs on my
 amd64 bare metal testbed, and I'm wondering if they might be related.
 Logs from those:
 
   https://www.gson.org/netbsd/bugs/build/amd64-baremetal/commits-2022.03.html#2022.03.08.20.45.56
   https://www.gson.org/netbsd/bugs/build/amd64-baremetal/commits-2022.03.html#2022.03.09.00.20.48
 
 -- 
 Andreas Gustafsson, gson%gson.org@localhost