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Re: Call for testing of ehci(4), ohci(4), slhci(4), uhci(4) data toggle patch

To: "Jonathan A. Kollasch" <jakllsch%kollasch.net@localhost>
Subject: Re: Call for testing of ehci(4), ohci(4), slhci(4), uhci(4) data toggle patch
From: Masao Uebayashi <uebayasi%tombi.co.jp@localhost>
Date: Sat, 24 Apr 2010 18:15:27 +0900

On Sat, Apr 24, 2010 at 01:25:16AM +0000, Jonathan A. Kollasch wrote:
> Oddly, it appears that this USB 1.1 device doesn't work via
> a USB 2.0 hub, so I can't really claim regression there.

It's a known issue; USB 1.1 INTR / ISOC transaction over USB 2.0 hub needs
Transaction Translator, which our ehci(4) doesn't support yet.

Masao

-- 
Masao Uebayashi / Tombi Inc. / Tel: +81-90-9141-4635

References:
- Call for testing of ehci(4), ohci(4), slhci(4), uhci(4) data toggle patch
  - From: Yorick Hardy
- Re: Call for testing of ehci(4), ohci(4), slhci(4), uhci(4) data toggle patch
  - From: Jonathan A. Kollasch

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