On Friday 08 February 2002 14:55, Georg Acher wrote:
> On Fri, Feb 08, 2002 at 02:38:35PM -0500, 
[EMAIL PROTECTED] wrote:
> > > Which UHCI driver are you using?
> > >
> > > I assume usb-uhci since that's what RH 7.2 uses?
> >
> > Yes - usb-uhci.
>
> There were a few bugs in URB queuing in usb-uhci, I fixed them AFAIK at
> about >2.4.10.
> And, yes - OHCI is much smarter in transferring data. Queuing URBs is
> really a pain for UHCI...

I was having problems with missing data when on an out pipe under heavy 
traffic situations with Redhat 7.1 and kernel 2.4.5.  This was fixed when I 
upgraded to 2.4.17.  I assume that your fix around 2.4.10 fixed this.

My problem on the in pipe, which is probably the same as Chris's, was not 
fixed by upgrading to 2.4.17.  I am not queueing urbs on the read pipe 
though.  How would you recommend writing a ethernet usb driver where we have 
to deal with heavy traffic.  Should I really be using multiple read URBs (we 
don't under Windows and Mac)?

I agree with Chris that from the driver perspective things should work the 
same way whether UHCI (either driver) or OHCI is being used.

David

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