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Date:      Mon, 27 Feb 2006 21:43:45 +0100
From:      Stefan Walter <sw@gegenunendlich.de>
To:        Ian Dowse <iedowse@FreeBSD.org>
Cc:        FreeBSD-gnats-submit@FreeBSD.org, freebsd-usb@FreeBSD.org
Subject:   Re: usb/82660: EHCI: I/O stuck in state 'physrd'/panic
Message-ID:  <20060227204344.GA988@kyuzo.dunkelkammer.void>
In-Reply-To: <200602251403.k1PE3tHq091141@freefall.freebsd.org>
References:  <200602251403.k1PE3tHq091141@freefall.freebsd.org>

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Ian Dowse, 25.02.06, 15:03h CET:

> Feedback received - thanks. Would it be possible to get a USB_DEBUG
> trace at whatever level you can still reproduce the problem? There
> was a very similar problem with VIA controllers and the fix for
> that was MFC'd a few weeks ago, so the issue you are seeing must
> be deeper than just missing interrupt.

With hw.usb.ehci.debug=5 and above, the problem disappears and I can
transfer data from the USB stick successfully without any pauses. Here's a
copy of what was written to /var/log/messages with hw.usb.ehci.debug=4
when I copied a file of 4.5 megabytes from a USB stick to the hard disk.
The output is bzip2'd and uuencoded (base64) to include it in the PR. I
hope that's OK.

The file transfer stalled at around time stamp 21:09:25.

Regards,
Stefan

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====





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