From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from static-88-194-224-77.ipcom.comunitel.net ([77.224.194.88]:38729 "EHLO panicking.kicks-ass.org" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751680AbZKKKbc (ORCPT ); Wed, 11 Nov 2009 05:31:32 -0500 Message-ID: <4AFA918F.10708@panicking.kicks-ass.org> Date: Wed, 11 Nov 2009 11:27:27 +0100 From: Michael Trimarchi MIME-Version: 1.0 To: Mauro Carvalho Chehab CC: Randy Dunlap , "linux-media@vger.kernel.org" , Hans de Goede Subject: Re: ov538-ov7690 References: <4AF89498.3000103@panicking.kicks-ass.org> <4AF93DE5.6060901@panicking.kicks-ass.org> <20091110081000.9e7c7717.rdunlap@xenotime.net> <4AF99A03.7070303@panicking.kicks-ass.org> <20091110090910.18f32748.rdunlap@xenotime.net> <20091110165747.35d31687@pedra.chehab.org> In-Reply-To: <20091110165747.35d31687@pedra.chehab.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: Mauro Carvalho Chehab wrote: > Em Tue, 10 Nov 2009 09:09:10 -0800 > Randy Dunlap escreveu: > >>>> (**) This is also one of several codes that different kinds of host >>>> controller use to indicate a transfer has failed because of device >>>> disconnect. In the interval before the hub driver starts disconnect >>>> processing, devices may receive such fault reports for every request. >>>> >>>> >>>>> Ok, this is not a big issue because I can use vlc to test the camera. But anybody >>>>> knows why camorama, camstream, cheese crash during test. is it driver depend? or not? >>>> Could be driver. Easily could be a device problem too. >>> I think that it can be a vl2 vl1 problem. Because now I can manage in skype too using >>> the v4l1-compat library. Maybe my 2.6.32-rc5 is too new :( >> I don't even know what vl2 vl1 means. ;) > > He is probably referring to V4L1 x V4L2 API calls. Very unlikely. What libv4l Yes > does is to convert userspace calls via V4L1 to a V4L2 call to kernel. So, > you're basically using the same API to communicate to userspace. Ugly but very usefull in such application like skype, and people want it :( > > It should be noticed that, if you're not using libv4l for the other > applications, then you may be using a different format at the driver, since > libv4l has the capability of doing format conversions. > > So, it could be possible that the device firmware for some formats are broken. > > Another possibility is that maybe libv4l is just discarding such errors. > > Or, as Randy mentioned, it can be just a cable or a connector with bad contact. Change the connector fix the packet problem. So at least the version ov538-ov7690 seems ok. Thanks