From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751197AbWBCGVL (ORCPT ); Fri, 3 Feb 2006 01:21:11 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751250AbWBCGVL (ORCPT ); Fri, 3 Feb 2006 01:21:11 -0500 Received: from viper.oldcity.dca.net ([216.158.38.4]:4753 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S1751197AbWBCGVK (ORCPT ); Fri, 3 Feb 2006 01:21:10 -0500 Subject: Re: usb bandwidth allocation issue using 2 pvr devices (em28xx driver) v4l2 From: Lee Revell To: Markus Rechberger Cc: Linux and Kernel Video , linux-kernel@vger.kernel.org In-Reply-To: References: Content-Type: text/plain Date: Fri, 03 Feb 2006 01:21:01 -0500 Message-Id: <1138947662.15691.241.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Evolution 2.5.90 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2006-02-03 at 06:49 +0100, Markus Rechberger wrote: > Hi! > > this should be addressed to USB subsystem developers, I also > reproduced this issue. > The problem is the isochronous transfer in em28xx-core.c I'm quite > sure it's correct and the bug is somewhere deeper in the USB > subsystem. Is USB bandwidth checking enabled? It's known to be broken, and should be disabled by default... Lee