From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <3b5b943cc56c25414868554c8fd7c724@hamnavoe.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] usb ohci support arrives -- caution
From: Richard Miller <9fans@hamnavoe.com>
Date: Wed,  6 Feb 2008 12:55:33 +0000
In-Reply-To: <28b3f0ca3038a67e52d8afdd7518e943@plan9.bell-labs.com>
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Be careful about installing this update.  The kernel changes don't
just add ohci support; they also change the ctl interface to /dev/usb
(even for uhci) which is used by the usb daemon and other commands
in /bin/usb.  The change has been made in a way which is neither
forward nor backward compatible -- the new usbd won't work with
old kernels, and the new kernel won't work with the old usbd.
At present the /bin/usb binaries on sources have been updated but
the kernel binaries haven't.  So anyone with uhci usb who does
a replica/pull today will also need to rebuild their kernels.