From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.kapsi.fi ([217.30.184.167]:39541 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751263Ab2IPOYC (ORCPT ); Sun, 16 Sep 2012 10:24:02 -0400 Message-ID: <5055E0ED.8030808@iki.fi> Date: Sun, 16 Sep 2012 17:23:41 +0300 From: Antti Palosaari MIME-Version: 1.0 To: Marx CC: linux-media@vger.kernel.org Subject: Re: ITE9135 on AMD SB700 - ehci_hcd bug References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: On 09/12/2012 09:32 AM, Marx wrote: > Hello > I'm trying to use dual DVB-T tuner based on ITE9135 tuner. I use Debian > kernel 3.5-trunk-686-pae. My motherboard is AsRock E350M1 (no USB3 ports). > Tuner is detected ok, see log at the end of post. > > When I try to scan channels, bug happens: > Sep 11 17:16:31 wuwek kernel: [ 209.291329] ehci_hcd 0000:00:13.2: > force halt; handshake f821a024 00004000 00000000 -> -110 > Sep 11 17:16:31 wuwek kernel: [ 209.291401] ehci_hcd 0000:00:13.2: HC > died; cleaning up > Sep 11 17:16:31 wuwek kernel: [ 209.291606] usb 2-3: USB disconnect, > device number 2 > Sep 11 17:16:41 wuwek kernel: [ 219.312848] dvb-usb: error while > stopping stream. > Sep 11 17:16:41 wuwek kernel: [ 219.320585] dvb-usb: ITE 9135(9006) > Generic successfully deinitialized and disconnected. > > After trying many ways I've read about problems with ehci on SB700 based > boards and switched off ehci via command > sh -c 'echo -n "0000:00:13.2" > unbind' > and now ehci bug doesn't happen. Of course I can see only one tuner and > in slower USB mode (see log at the end). But now I can scan succesfully > without any errors. > > Of course it isn't acceptable fix for my problem. Drivers for ITE9135 > seems ok, but there is a problem with ehci_hcd on my motherboard. > I would like to know what can I do to fix my problem. I am quite sure dvb_usb_v2 fixes that. Test latest tree. Antti -- http://palosaari.fi/