From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <e95bb92ecfd9902e044f7133a7c0cbcd@hamnavoe.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] usb ohci support arrives -- another caution
From: Richard Miller <9fans@hamnavoe.com>
Date: Wed,  6 Feb 2008 19:08:01 +0000
In-Reply-To: <5c86343eccbd58656adc2a53d8c5ebf6@plan9.bell-labs.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Topicbox-Message-UUID: 49afaba2-ead3-11e9-9d60-3106f5b1d025

> Yes, the mouse driver should get the configuration descriptor and
> interpret it.

In the meantime, the quick and dirty fix is to change lines 164,165
in /sys/src/cmd/usb/misc/usbmouse.c from
		fprint(2, "Send ep %d 10 r %d to %s\n", ep, nbuts, ctlfile);
	fprint(ctlfd, ctlmsgfmt, ep, nbuts);
to
		fprint(2, "Send ep %d 10 r %d to %s\n", ep, 5, ctlfile);
	fprint(ctlfd, ctlmsgfmt, ep, 5);
so the usb packet size will be big enough for both sorts of mouse.

This was not a problem with the old usbuhci driver, which quietly
enforced a minimum usb packet size of 8.