From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.ukfsn.org ([77.75.108.3]:48066 "EHLO mail.ukfsn.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965332Ab2CPPvK (ORCPT ); Fri, 16 Mar 2012 11:51:10 -0400 Message-ID: <4F63616D.5040808@ukfsn.org> Date: Fri, 16 Mar 2012 15:51:09 +0000 From: Andy Furniss MIME-Version: 1.0 To: gennarone@gmail.com CC: "linux-media@vger.kernel.org" Subject: Re: [PATCH] em28xx: pre-allocate DVB isoc transfer buffers References: <1329155962-22896-1-git-send-email-gennarone@gmail.com> <4F628886.3050009@ukfsn.org> <4F6299A4.1060309@gmail.com> <4F6312F0.1010305@ukfsn.org> <4F6356C5.9010808@ukfsn.org> <4F635EC7.9070700@gmail.com> In-Reply-To: <4F635EC7.9070700@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: Gianluca Gennari wrote: >> Andy Furniss wrote: >> Mar 16 14:56:58 noki kernel: ehci_hcd 0000:01:0a.2: shutdown urb >> ced2c800 ep4in-iso > > Looks like some innocuous logging from the ehci_hcd driver. I've never > seen it because I'm not using the ehci_hcd module on my systems. > When you tune a new channel, the USB transfer is stopped (with the URBs > still alive, so the driver "shuts down" them) and a new one is started. > Then the URBs are reused (instead of being deallocated/allocated > again/cleared as before) so they are resubmitted. Ok, I don't have any problems so far - I also probably have some verbose/debugging usb options enabled in my kernel so I suppose others may never see these.