From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexander Stein Subject: Re: [PATCH] can: c_can: Fix bit clearing and message object read Date: Wed, 09 Apr 2014 12:28:50 +0200 Message-ID: <1749126.lLSDJkX5K7@ws-stein> References: <1396950382-13091-1-git-send-email-alexander.stein@systec-electronic.com> <155230474.Qal719xsr7@ws-stein> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Return-path: Received: from webbox1416.server-home.net ([77.236.96.61]:55248 "EHLO webbox1416.server-home.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750784AbaDIKaD (ORCPT ); Wed, 9 Apr 2014 06:30:03 -0400 In-Reply-To: <155230474.Qal719xsr7@ws-stein> Sender: linux-can-owner@vger.kernel.org List-ID: To: Thomas Gleixner Cc: Wolfgang Grandegger , Marc Kleine-Budde , linux-can@vger.kernel.org On Wednesday 09 April 2014 09:40:11, Alexander Stein wrote: > On Wednesday 09 April 2014 02:42:57, Thomas Gleixner wrote: > > I found the issue after a I got hold of a PCH afflicted system. It > > might not apply cleanly as I changed a few other things in my patch > > queue, but you get the idea. Too tired now to write changelogs, run > > tests .... > > > > W/o that patch I observe the same problems as you. With that applied I > > did not observe any dropout with a 10 * 1e6 packet run. > > Applying your patch I run my test with 5.000.000 CAN frames where none got lost and only a single one got switched. Just for completeness: If this test is done while iperf and I2C is ongoing meanwhile there are 24 switched messages. Regards, Alexander -- Dipl.-Inf. Alexander Stein SYS TEC electronic GmbH Am Windrad 2 08468 Heinsdorfergrund Tel.: 03765 38600-1156 Fax: 03765 38600-4100 Email: alexander.stein@systec-electronic.com Website: www.systec-electronic.com Managing Director: Dipl.-Phys. Siegmar Schmidt Commercial registry: Amtsgericht Chemnitz, HRB 28082