From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laxman Dewangan Subject: Re: [PATCH] ASoC: tegra: use dmaengine based dma driver Date: Tue, 3 Jul 2012 11:56:41 +0530 Message-ID: <4FF290A1.6060603@nvidia.com> References: <1340969673-7776-1-git-send-email-ldewangan@nvidia.com> <1340969673-7776-2-git-send-email-ldewangan@nvidia.com> <4FEDDF89.1050907@wwwdotorg.org> <4FEF166D.2010705@nvidia.com> <4FF15B16.9020903@nvidia.com> <4FF1D00D.6040402@wwwdotorg.org> <20120702164717.GH25093@opensource.wolfsonmicro.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20120702164717.GH25093@opensource.wolfsonmicro.com> Sender: linux-kernel-owner@vger.kernel.org To: Mark Brown Cc: Stephen Warren , "tiwai@suse.de" , "perex@perex.cz" , Stephen Warren , "lrg@ti.com" , "alsa-devel@alsa-project.org" , "linux-kernel@vger.kernel.org" , "linux-tegra@vger.kernel.org" List-Id: linux-tegra@vger.kernel.org On Monday 02 July 2012 10:17 PM, Mark Brown wrote: > * PGP Signed by an unknown key > > On Mon, Jul 02, 2012 at 10:45:01AM -0600, Stephen Warren wrote: > >> to work. No audio is heard, and aplay eventually exits with the >> following error message: > For values of eventually that will be about 10s by default. > >> aplay: pcm_write:1603: write error: Input/output error >> I believe this means that the DMA simply isn't operating. > Yes, normally. Let me debug this specific to T20 but it will not stop to apply the patch.