From mboxrd@z Thu Jan 1 00:00:00 1970 From: ANISH KUMAR Subject: DMA interrupt not getting triggered Date: Fri, 05 Feb 2010 08:17:17 +0000 (GMT) Message-ID: <25591311.716591265357837890.JavaMail.weblogic@epml09> Reply-To: anish.singh@samsung.com Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mailout5.samsung.com (mailout5.samsung.com [203.254.224.35]) by alsa0.perex.cz (Postfix) with ESMTP id 2E05924141 for ; Fri, 5 Feb 2010 09:17:22 +0100 (CET) Received: from ep_ms13_bk (mailout5.samsung.com [203.254.224.35]) by mailout1.samsung.com (iPlanet Messaging Server 5.2 Patch 2 (built Jul 14 2004)) with ESMTP id <0KXD00K9E0CUGK@mailout1.samsung.com> for alsa-devel@alsa-project.org; Fri, 05 Feb 2010 17:17:18 +0900 (KST) Received: from ep_spt02 (ms13.samsung.com [203.254.225.109]) by ms13.samsung.com (iPlanet Messaging Server 5.2 Patch 2 (built Jul 14 2004)) with ESMTP id <0KXD006400CTF2@ms13.samsung.com> for alsa-devel@alsa-project.org; Fri, 05 Feb 2010 17:17:18 +0900 (KST) Content-return: prohibited MIME-version: 1.0 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: "alsa-devel@alsa-project.org" Cc: "JaroslavKyselaperex@perex.cz" List-Id: alsa-devel@alsa-project.org I am facing problem related to DMA interrupt not getting triggered some times(out of 5 times one time it is happening) causing application to wait for the buffers(hw_ptr = 0) and no sound because of this. I am using samsung soc with DMA controller PL080.I tried increasing periods_min to 4 but still no result. I am using 2.6.29 kernel version.