From mboxrd@z Thu Jan 1 00:00:00 1970 From: Petko Manolov Subject: Re: Active URB submitted twice in pegasus driver Date: Tue, 26 Mar 2013 17:22:07 +0200 (EET) Message-ID: References: <20130325223834.GF6869@xanatos> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII Cc: Petko Manolov , linux-usb@vger.kernel.org, Greg KH , netdev@vger.kernel.org, Stephen Hemminger To: Sarah Sharp Return-path: Received: from lan.nucleusys.com ([92.247.61.126]:60335 "EHLO zztop.nucleusys.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S965291Ab3CZPkd (ORCPT ); Tue, 26 Mar 2013 11:40:33 -0400 In-Reply-To: <20130325223834.GF6869@xanatos> Sender: netdev-owner@vger.kernel.org List-ID: On Mon, 25 Mar 2013, Sarah Sharp wrote: > Hi Petko, > > I'm testing a USB to ethernet adapter with Greg's usb-linus branch (based > on 3.9-rc4). I'm seeing an odd behavior, and I'm suspicious that a > second behavior found by Stephen Hemminger may also be related: > > http://marc.info/?l=linux-usb&m=136364625519235&w=2 > > When I load the pegasus driver for this adapter (without an ethernet > cable hooked to it), and this is on a cold system boot or a complete > unloading and reloading of the usbcore, I get the following warning: Unfortunately the machine i ran my tests on does not have xHCI nor i used Greg's tree. I did not observe this warning on both 3.8.4 and Linus' 3.9-rc4. It looks like to me that the issue is outside the driver code. However, i am curious whether you experience the same problem with other (non-ADMtek based) usb-to-lan adapters which support xxx_set_multicast(). These calls are asynchronous by nature and should also trigger this warning. Please let me know if this is not the case so i start digging into pegasus.c. cheers, Petko