Subject: Re: USB problem on -current?
To: None <M.Drochner@fz-juelich.de>
From: Kouichirou Hiratsuka <firstname.lastname@example.org>
Date: 03/21/2007 00:16:02
At Tue, 20 Mar 2007 15:52:55 +0100,
Matthias Drochner wrote:
> There might be a problem with my new code temporarily disabling
> status change notifications. A real hub does resend status change
> packets until it gets an acknowledge (which would be a "clear
> feature" request). The root hub emulation for ehci doesn't do
> that correctly, so that status changes might get lost.
> I particulary suspect the connect/disconnect sequence which happens
> if a device is handed over to a companion controller. Whether
> this strikes might depend on timing details and whether the
> port in question is among the first or last probed on the hub.
> Can you try the appended patch?
The patch works fine for me. Thanks!