From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755627Ab2CWHBg (ORCPT ); Fri, 23 Mar 2012 03:01:36 -0400 Received: from mail-lb0-f174.google.com ([209.85.217.174]:40347 "EHLO mail-lb0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754672Ab2CWHBc (ORCPT ); Fri, 23 Mar 2012 03:01:32 -0400 Date: Fri, 23 Mar 2012 09:00:39 +0200 From: Mika Westerberg To: H Hartley Sweeten Cc: Rafal Prylowski , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "vinod.koul@intel.com" , "rmallon@gmail.com" Subject: Re: [PATCH] ep93xx: Implement double buffering for M2M DMA channels Message-ID: <20120323070039.GB5812@mwesterb-mobl.ger.corp.intel.com> References: <4F683B36.8090101@metasoft.pl> <20120321193231.GA3740@mwesterb-mobl.ger.corp.intel.com> <20120322073750.GA637@mwesterb-mobl.ger.corp.intel.com> <20120322200339.GA5812@mwesterb-mobl.ger.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Mar 22, 2012 at 06:56:30PM -0500, H Hartley Sweeten wrote: > I wonder if the spurious interrupts were the real problem behind what > was causing the Oops that prompted your patch: > > dma/ep93xx_dma: prevent ep93xx_dma_tasklet() to reference an empty list No, it was a different problem spotted by Rafal. It was related to calling dma_terminate_all() in a interrupt context or something like that.