[RFC] [PATCH] usbatm.[ch]: multiple changes

Roman Kagan rkagan at mail.ru
Wed Apr 6 10:02:37 EDT 2005

On Mon, Apr 04, 2005 at 08:24:29PM +0200, matthieu castet wrote:
> My code is based more more based on ueagle.
> If you are interested there is some preview here : 
> http://castet.matthieu.free.fr/eagle/

Thanks for the pointer, it'll make formulating the requirements to
usbatm easier.

> Also the bulk mode don't work well with eagle-usb, there are lot's of 
> errors like usb-atm. That's why iso is the default.

Hmm, neither the forum nor the mailing list archive at eagle-usb.org
seems to mention anybody having babble problem in bulk mode.

> >there's any reference to the kind of errors you see in their forum or
> >docs, which makes me suspect a hardware problem.
> No this was confirmed by a developper :
> https://mail.gna.org/public/eagleusb-dev/2005-01/msg00083.html

Same concern here: the message you quote is the only one mentioning
-EILSEQ, and that developer only appears to remember someone else
reporting it...

Please understand that putting a workaround like that is usually frowned
upon, because it may hide a real problem.  So I think we need to try to
accumulate some statistics on the matter, and to isolate the source of
the problem as narrow as possible.  In particular, if that turns out to
be a firmware bug, it can be reported to ADI and hopefully fixed by

Maybe you can get people at eagle-usb.org who have a high enough
connection speed to try to use your driver in both bulk and iso mode
without the EILSEQ workaround?  (Naturally I also suggest trying with my
latest patch if you feel like it :)

Thanks and cheers,

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