From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfgang Grandegger Subject: Re: PCH_CAN - echo_skb is occupied Date: Tue, 01 Apr 2014 21:29:15 +0200 Message-ID: <533B138B.1010904@grandegger.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from ngcobalt02.manitu.net ([217.11.48.102]:46620 "EHLO ngcobalt02.manitu.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751348AbaDAT3S (ORCPT ); Tue, 1 Apr 2014 15:29:18 -0400 In-Reply-To: Sender: linux-can-owner@vger.kernel.org List-ID: To: jprodriguez@elecnor.com, linux-can@vger.kernel.org On 03/31/2014 11:59 AM, JUAN PEDRO RODRIGUEZ NIETO wrote: > I am using a Q7 module with Atom processor and EG20T. I am using the > latest Yocto Dora 10.0.0 to build the embedded linux image. This image > is still using pch_can.c driver, with the "echo_skb is occupied" > problem. > > I have checked with your post > http://marc.info/?l=linux-can&m=137180949810229&w=2 > and the source code of pch_can does not have your patch applied. > > I am not familiar with kernel patching. Could you please direct me > where can I find the latest pch_can and how to download your patch in > patch file format so I can apply it to my poky build? > > Is there any plan to release these patches in the master branch? The EG20T does have a C_CAN core and therefore we would like to switch to the more advanced C_CAN driver (and get rid of the pch_can driver sooner than later). It also has less known issues. Last year I posted a PCH PCI interface driver for the EG20T but it did not make it into mainline yet. The problem is that I don't have any C_CAN hardware at hand to validate the patches myself. I'm going to dig the patches out, end of the week, also for the pch_can. BTW, what kernel version are you using? Any chance to switch to a recent mainline kernel? Wolfgang.