linux-kernel - Re: USB/DVB - Old Technotrend TT-connect S-2400 regression tracked down

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Date:	Sat, 23 May 2009 11:25:37 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	David <david@...olicited.net>
Cc:	linux-media@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	dbrownell@...rs.sourceforge.net,
	Alan Stern <stern@...land.harvard.edu>, leonidv11@...il.com,
	Greg KH <gregkh@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: USB/DVB - Old Technotrend TT-connect S-2400 regression tracked 
	down

On Sat, May 23, 2009 at 12:32 AM, David <david@...olicited.net> wrote:
> I reported this DVB-S card breaking between 2.6.26 and 2.6.27. I've
> finally had time to do some digging, and the regression is caused by:
>
>    b963801164618e25fbdc0cd452ce49c3628b46c8 USB: ehci-hcd unlink speedups
>
> ..that was introduced in 2.6.27. Reverting this change in 2.6.29-rc5
> makes the card work happily again.

[ Note: David meant 2.6.30-rc5 here. ]

Thanks for doing the bisect!

On Sat, May 23, 2009 at 12:32 AM, David <david@...olicited.net> wrote:
> I don't know enough about USB protocols to speculate on whether there
> may be a better fix, but hopefully someone cleverer than me can get to
> the bottom of the problem?

Lets start with cc'ing the right people. :-)

                                Pekka
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