From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <384E7C14.ECF75B72@pacbell.net> Date: Wed, 08 Dec 1999 07:41:08 -0800 From: David Brownell MIME-Version: 1.0 To: "Gregory P. Smith" Cc: iweiny@pacbell.net, linuxdev , usb Subject: Re: [linux-usb] OHCI fix for Belkin BusPort card on PowerMac References: <199912062223.OAA05538@batcave2.localdomain> <19991206152414.B8929@yyz.electricrain.com> Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: "Gregory P. Smith" wrote: > > On Mon, Dec 06, 1999 at 02:23:12PM -0800, iweiny@pacbell.net wrote: > > > > I am running: > > PowerMac 8500 (604 processor) > > USB BusPort from Belkin (Model: F5U005-MAC) PCI USB card > > 2.2.12 kernel (self compiled) > > 2.3.29 USB stack from Paul Mackerras's rsync tree > > opendis-0.0.3-pre4 from http://digitalux.netpedia.net (and a DC-265 camera) > ... > > However, when requesting more data then the camera had to give the returned > > status was "9" and not "0". The OHCI driver interpreted this as an error and > > subsequently the user level program would think no data had been returned. > ... > > Data underrun means the controller received less data that it asked > for in a transfer. This is not really an error in many situations; > try modifying the dc2xx driver to accept it. I'd not be sure it should be OK in this situation, though. Or that the "opendis-0.0.3-pre4" release is really free of dependencies on serial I/O models, where such cases are the norm. (By the way, the page above lists 0.0.2 -- dated August, with no USB support -- as the most current version!) > It's not your card, its all controllers and a general "all slightly > different" state of the HCDs at the moment. We're working on fixing > this with a move to a new cleaner device <-> usb stack/hcd interface. That'll be very good to have. As a quick sanity check, though, is USB working nicely on that PowerMac for anyone else? I've not heard many success reports, pro or con, on Mac USB support. - Dave ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/