From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthias Klein Subject: can: flexcan: problems with bus error reporting om i.MX53 Date: Fri, 25 Jul 2014 20:16:34 +0200 Message-ID: <53D29F02.8010708@optimeas.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from obi-wan.optimeas.de ([82.165.198.204]:60849 "EHLO obi-wan.optimeas.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753043AbaGYSYF (ORCPT ); Fri, 25 Jul 2014 14:24:05 -0400 Sender: linux-can-owner@vger.kernel.org List-ID: To: wg@grandegger.com, mkl@pengutronix.de, linux-can@vger.kernel.org, support@karo-electronics.de Cc: Sebastian Siewior Hi all, we had the following problems when we enabled bus error reporting on an i.MX537 (Ka-Ro TX53-8130): - interrupt flooding when sending a packet on an open bus - bus state change notifications did not work properly - second bus state change after bus recovery was not properly notified The patches in the next mails fix all these problems and are tested against mainline linux 3.12.24-rt38 with PREEMPT_RT patch. Best regards, Matthias Klein