Re: kern/54070: urtwn(4) does not work on OHCI

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

The following reply was made to PR kern/54070; it has been noted by GNATS.

From: Andreas Gustafsson <gson%gson.org@localhost>
To: Nick Hudson <nick.hudson%gmx.co.uk@localhost>
Cc: gnats-bugs%netbsd.org@localhost
Subject: Re: kern/54070: urtwn(4) does not work on OHCI
Date: Wed, 27 Nov 2019 09:48:45 +0200

 Nick Hudson wrote:
 > What is the error code OHCI_CC_DATA_UNDERRUN?
 
 Yes.
 
 > Maybe OHCI_TD_R should be used more?
 
 I think then we would run into the issue discussed in the following
 quote from http://www.fysnet.net/docs/vol8_future.pdf:
 
 "If this bit is set, the controller will mark the TD as a successful
 transfer, however, the controller will continue on to the next TD
 pointed to by the NextTD field. Continuing to the next TD may not be
 what you planned on."
 -- 
 Andreas Gustafsson, gson%gson.org@localhost