From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754676AbbAPLvO (ORCPT ); Fri, 16 Jan 2015 06:51:14 -0500 Received: from gw-1.arm.linux.org.uk ([78.32.30.217]:44622 "EHLO pandora.arm.linux.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751421AbbAPLvM (ORCPT ); Fri, 16 Jan 2015 06:51:12 -0500 Date: Fri, 16 Jan 2015 11:51:01 +0000 From: Russell King - ARM Linux To: Fabio Estevam Cc: Christian Gmeiner , LKML , "netdev@vger.kernel.org" , "fugang.duan@freescale.com" Subject: Re: fec: warning found by dma debug Message-ID: <20150116115101.GI12302@n2100.arm.linux.org.uk> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 16, 2015 at 09:32:20AM -0200, Fabio Estevam wrote: > Thanks for the report, Christian > > Adding Andy and Russell on Cc. Yes, this is highly possible. My patch set which addressed all sorts of issues like this is now a year old, and I gave up with trying to get it merged - it became far too difficult to constantly update the patch set. I think Marek was going to look at taking over the patch set, but I've heard nothing from him. The patch set can be found at: git://ftp.arm.linux.org.uk/~rmk/linux-arm.git fec-testing but beware: not all of it is meant to be merged. That branch represents all patches I tried to solve various problems and improve performance and correctness (from the ARM architecture point of view). I did a lot of work to evaluate the effect of each individual patch, and tried to only include patches which did not cause a regression. From what I remember, every patch (apart from the branch head) from 7e291d514886 (net:fec: unsorted hacks) onwards was not well proven - but that was all done before the driver ended up with TSO support. Post TSO support, patches with "net: fec:" (note the space) /were/ good to go, but then the multiple-queue support got merged which completely screwed the patch set again. So, I just totally gave up. Sorry. -- FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up according to speedtest.net.