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From: Sean Young <sean@mess.org>
To: Martin Kittel <linux@martin-kittel.de>
Cc: linux-media@vger.kernel.org
Subject: Re: Patch mceusb: fix invalid urb interval
Date: Wed, 11 Dec 2013 13:17:51 +0000	[thread overview]
Message-ID: <20131211131751.GA434@pequod.mess.org> (raw)
In-Reply-To: <loom.20131110T113621-661@post.gmane.org>

On Sun, Nov 10, 2013 at 10:50:45AM +0000, Martin Kittel wrote:
> Hi,
> 
> I had trouble getting my MCE remote control to work on my new Intel
> mainboard. It was working fine with older boards but with the new board
> there would be no reply from the remote just after the setup package was
> received during the init phase.
> I traced the problem down to the mceusb_dev_recv function where the received
> urb is resubmitted again. The problem is that my new board is so blazing
> fast that the initial urb was processed in less than a single 125
> microsecond interval, so the urb as it was received had urb->interval set to 0.
> As the urb is just resubmitted as it came in it now had an invalid interval
> set and was rejected.
> The patch just resets urb->interval to its initial value and adds some error
> diagnostics (which would have saved me a lot of time during my analysis).

What mceusb devices is this? Could you provide lsusb -vvv output please?

Also what usb hub are you using? Another user is reporting problems with an
xhci hub.


Sean

  parent reply	other threads:[~2013-12-11 13:17 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-11-10 10:50 Patch mceusb: fix invalid urb interval Martin Kittel
2013-12-10 16:20 ` Mauro Carvalho Chehab
2013-12-11 13:17 ` Sean Young [this message]
2013-12-11 20:34   ` Martin Kittel
2014-01-15 15:49     ` Mauro Carvalho Chehab
2014-01-15 16:52       ` Sean Young
2014-01-15 17:59         ` Mauro Carvalho Chehab
2014-01-19 21:05           ` Martin Kittel
2014-01-19 21:56             ` Sean Young
2014-01-20 17:36               ` Jarod Wilson
2014-11-03 16:49                 ` Mauro Carvalho Chehab
2014-11-04 21:25                   ` Sean Young
2014-11-04 22:39                     ` Mauro Carvalho Chehab
2014-01-16  2:55         ` Jarod Wilson
2014-01-20 21:29           ` Sean Young

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