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From: Hans Petter Selasky <hselasky@freebsd.org>
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Cc: "freebsd-usb@freebsd.org" <freebsd-usb@freebsd.org>
Subject: Re: Network TX/RX fairness is not honored by USB stack
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> Personally I'd like to nuke the use of interrupt endpoint here but
> want to hear Han's opinion before doing that.

If no data is ever transmitted except zero length packets, you can just nuke 
it.

Rest of patch looks Ok.

--HPS