From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neil Armstrong Subject: Re: [RFC PATCH 0/3] net: dsa: Complete and fix the dsa unbinding Date: Thu, 1 Oct 2015 17:19:39 +0200 Message-ID: <560D4F0B.9080703@baylibre.com> References: <560B9B70.6030202@baylibre.com> <560C1F5A.5070506@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, andrew@lunn.ch, vivien.didelot@savoirfairelinux.com, linux@roeck-us.net To: Florian Fainelli , "David S. Miller" , Jesper Dangaard Brouer Return-path: Received: from mail-wi0-f172.google.com ([209.85.212.172]:36849 "EHLO mail-wi0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755401AbbJAPTm (ORCPT ); Thu, 1 Oct 2015 11:19:42 -0400 Received: by wicgb1 with SMTP id gb1so34765353wic.1 for ; Thu, 01 Oct 2015 08:19:41 -0700 (PDT) In-Reply-To: <560C1F5A.5070506@gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: On 09/30/2015 07:43 PM, Florian Fainelli wrote: > On 30/09/15 01:21, Neil Armstrong wrote: >> In order to cleanly unbind the dsa core, either as a module removal, >> or a platform device unbind, switch the allocation the their devm_ >> counterparts and complete the destroy functions. >> >> The last patch is an experimental way to exit the probe when no >> switch is found in the discover process. >> >> The patches are based on the current net-next. > > I looked at the patches and they bring DSA in a better direction. For > future submissions, could you CC people who recently worked on DSA, like > Andrew Lunn, Guenter Roeck, Vivien Didelot and myself? We can typically > give your patches a try fairly quickly. > > In case you are seriously considering making DSA a loadable module, > there were an earlier attempt here: > > http://comments.gmane.org/gmane.linux.network/345803 > > Thanks! > >> >> Neil Armstrong (3): >> net: dsa: Use devm_ prefixed allocations >> net: dsa: complete dsa_switch_destroy calls >> net: dsa: exit probe if no switch were found >> >> net/dsa/dsa.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++------- >> 1 file changed, 60 insertions(+), 7 deletions(-) >> > > At least, the following patch could be added with no pain to complete my code : [PATCH net-next 5/8] net: dsa: allow switch drivers to cleanup their resource (http://permalink.gmane.org/gmane.linux.network/345805) Then, the following patch could be re-proposed : [PATCH net-next 7/8] net: dsa: bcm_sf2: cleanup resources in remove callback I should probably also take this part also : + dst->master_netdev->dsa_ptr = NULL; + /* If we used a tagging format that doesn't have an ethertype + * field, make sure that all packets from this point get sent + * without the tag and go through the regular receive path. + */ + wmb(); + Neil