From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Pellegrini Subject: Re: =?utf-8?b?cGNoX2Nhbjo=?= Data transmission stops after dropped packet Date: Tue, 11 Dec 2012 14:46:37 +0000 (UTC) Message-ID: References: <50ACABE2.2020306@grandegger.com> <50C0B05F.7020606@grandegger.com> <2331999.ZYFOYXdjyx@ws-stein> <50C1160A.20203@grandegger.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: Received: from plane.gmane.org ([80.91.229.3]:51718 "EHLO plane.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752900Ab2LKOq7 (ORCPT ); Tue, 11 Dec 2012 09:46:59 -0500 Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1TiR6y-00048M-Eh for linux-can@vger.kernel.org; Tue, 11 Dec 2012 15:47:08 +0100 Received: from 96.45.208.254 ([96.45.208.254]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 11 Dec 2012 15:47:08 +0100 Received: from mikep86 by 96.45.208.254 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 11 Dec 2012 15:47:08 +0100 Sender: linux-can-owner@vger.kernel.org List-ID: To: linux-can@vger.kernel.org Wolfgang Grandegger grandegger.com> writes: > To summarize my understanding of your problem(s). As long as there are > no I2C transfers, everything works fine, right? The patch below does > report some write-readback failures but that's due to reserved read-only > bits. I assume t hat you also use my "RFC v2" patches for c_can. > > Trouble starts with concurrent I2C transfers. Then the protected > write-readback test fails, which I regard as abnormal hardware behavior, > resulting in message losses and out-of-order reception. > > Would be interesting to compare the hardware. Michael, could you also > show the output of "lspci -vv". I applied the patch provided. On driver load, dmesg reports the following: [ 379.817717] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.817733] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.817856] c_can_pci 0000:02:0c.3: can0: obj no:6, msgval:0x0000003f [ 379.817875] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.817891] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.817907] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.817923] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.817939] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.817955] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.817971] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.817987] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818003] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818019] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818035] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818051] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818067] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818082] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818098] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818114] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818130] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818146] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818162] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818178] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818194] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818228] c_can_pci 0000:02:0c.3: can0: obj no:7, msgval:0x0000007f [ 379.818246] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818262] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818278] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818294] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818310] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818326] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818342] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818358] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818374] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818390] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818406] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818422] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818437] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818453] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818469] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818485] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818501] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818517] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818533] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818549] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818565] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818599] c_can_pci 0000:02:0c.3: can0: obj no:8, msgval:0x000000ff [ 379.818617] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818634] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818650] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818665] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818679] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818694] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818709] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818724] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818739] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818754] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818769] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818784] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818799] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818814] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818828] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818844] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818858] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818873] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818888] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818903] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818918] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818951] c_can_pci 0000:02:0c.3: can0: obj no:9, msgval:0x000001ff [ 379.818968] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818983] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.818998] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819013] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819028] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819043] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819058] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819073] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819088] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819103] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819118] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819133] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819148] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819163] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819178] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819193] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819208] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819223] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819238] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819253] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819268] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819301] c_can_pci 0000:02:0c.3: can0: obj no:10, msgval:0x000003ff [ 379.819318] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819333] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819348] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819362] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819377] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819393] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819409] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819426] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819442] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819457] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819473] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819488] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819504] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819519] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819534] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819550] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819565] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819581] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819596] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819612] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819627] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819661] c_can_pci 0000:02:0c.3: can0: obj no:11, msgval:0x000007ff [ 379.819678] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819694] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819710] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819726] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819742] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819758] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819774] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819790] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819806] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819822] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819838] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819854] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819869] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819885] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819901] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819917] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819933] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819949] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819965] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819981] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.819997] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820075] c_can_pci 0000:02:0c.3: can0: obj no:12, msgval:0x00000fff [ 379.820093] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820110] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820125] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820142] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820157] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820173] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820189] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820205] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820221] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820237] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820252] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820268] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820284] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820300] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820316] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820332] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820348] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820364] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820380] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820396] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820412] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820446] c_can_pci 0000:02:0c.3: can0: obj no:13, msgval:0x00001fff [ 379.820464] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820480] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820496] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820512] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820528] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820544] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820560] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820576] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820591] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820607] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820623] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820639] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820655] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820671] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820687] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820703] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820719] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820734] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820750] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820766] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820782] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820817] c_can_pci 0000:02:0c.3: can0: obj no:14, msgval:0x00003fff [ 379.820835] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820851] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820867] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820883] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820899] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820915] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820930] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820946] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820962] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820978] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.820994] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821010] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821026] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821042] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821058] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821073] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821089] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821105] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821121] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821137] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821153] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821187] c_can_pci 0000:02:0c.3: can0: obj no:15, msgval:0x00007fff [ 379.821205] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821221] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821237] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821253] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821269] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821285] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821301] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821317] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821332] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821348] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821364] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821380] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821397] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821413] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821428] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821445] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821460] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821475] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821490] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821505] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821520] c_can_pci 0000:02:0c.3: can0: write 0x0 to offset 0x2c failed. got: 0x2000 [ 379.821553] c_can_pci 0000:02:0c.3: can0: obj no:16, msgval:0x0000ffff [ 379.821568] c_can_pci 0000:02:0c.3: can0: setting BTR=0518 BRPE=0000 "lspci -vv" reports: 02:0c.2 Serial bus controller [0c80]: Intel Corporation Platform Controller Hub EG20T I2C Controller Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- SERR- TAbort- SERR-