From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx1.redhat.com ([209.132.183.28]:36859 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752449Ab2GIIms (ORCPT ); Mon, 9 Jul 2012 04:42:48 -0400 Message-ID: <4FFA999B.7070000@redhat.com> Date: Mon, 09 Jul 2012 10:43:07 +0200 From: Hans de Goede MIME-Version: 1.0 To: Jean-Francois Moine CC: martin-eric.racine@iki.fi, 677533@bugs.debian.org, linux-media@vger.kernel.org Subject: Re: video: USB webcam fails since kernel 3.2 References: <20120614162609.4613.22122.reportbug@henna.lan> <20120614215359.GF3537@burratino> <20120616044137.GB4076@burratino> <1339932233.20497.14.camel@henna.lan> <4FF9CA30.9050105@redhat.com> <20120708203303.26d13474@armhf> In-Reply-To: <20120708203303.26d13474@armhf> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-media-owner@vger.kernel.org List-ID: Hi, On 07/08/2012 08:33 PM, Jean-Francois Moine wrote: > On Sun, 08 Jul 2012 19:58:08 +0200 > Hans de Goede wrote: > >> Hmm, this is then likely caused by the new isoc bandwidth negotiation code >> in 3.2, unfortunately the vc032x driver is one of the few gspca drivers >> for which I don't have a cam to test with. Can you try to build your own >> kernel from source? > > Hi Martin-Éric, > > Instead of re-building the gspca driver from a kernel source, you may > try the gspca test tarball from my web site > http://moinejf.free.fr/gspca-2.15.18.tar.gz That is a good option too and easier then building a whole new kernel, but: > It contains most of the bug fixes, including the one about the > bandwidth problem. Right, but the problem with the vc032x driver is that there no bandwidth related bugfix for it yet, which is why I asked Martin-Éric, not only to build a new gspca driver from source, but also to try some modifications. Martin-Éric, Building the gspca test-tarbal also is a good way to test this: http://moinejf.free.fr/gspca-2.15.18.tar.gz But once you've confirmed the problem still happens with that version you will still need to try the changes I suggested to gspca.c to help us confirm that this is a bandwidth issue and try to come up with a fix. Thanks & Regards, Hans