From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-gh0-f174.google.com ([209.85.160.174]:41629 "EHLO mail-gh0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752423Ab2GWMUW convert rfc822-to-8bit (ORCPT ); Mon, 23 Jul 2012 08:20:22 -0400 Received: by ghrr11 with SMTP id r11so5343987ghr.19 for ; Mon, 23 Jul 2012 05:20:22 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <1343029203238273500@masin.eu> References: <1343029203238273500@masin.eu> Date: Mon, 23 Jul 2012 08:20:21 -0400 Message-ID: Subject: Re: CX25821 driver in kernel 3.4.4 problem From: Devin Heitmueller To: =?ISO-8859-2?Q?Radek_Ma=B9=EDn?= Cc: linux-media@vger.kernel.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-media-owner@vger.kernel.org List-ID: On Mon, Jul 23, 2012 at 3:40 AM, Radek Mašín wrote: > Hello, > may be one more problem. I use Zoneminder software for capturing pictures from card and occasionally > I get corrupted picture. Please take a look for attached files. Looks like the IRQ handler wasn't servicing fast enough, causing parts of a frame to get dropped. Does this only happen when you have a bunch of streams running in parallel? This sort of performance issue would be very difficult to debug without one of the developers having a board. From what I understand the code provided by Conexant was merged essentially as-is (with some codingstyle cleanups and zero testing), with no upstream developers actually having the hardware. You're probably out of luck unless you're willing to pay somebody to get a board and debug the problem. Devin -- Devin J. Heitmueller - Kernel Labs http://www.kernellabs.com