Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752183AbcJMHSH (ORCPT ); Thu, 13 Oct 2016 03:18:07 -0400 Received: from mx0b-00176a03.pphosted.com ([67.231.157.48]:56170 "EHLO mx0a-00176a03.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751025AbcJMHSA (ORCPT ); Thu, 13 Oct 2016 03:18:00 -0400 Subject: Re: EXT: pre 4.9-rc dma regression, imx6 sound etc To: =?UTF-8?Q?Mika_Penttil=c3=a4?= , LKML References: <7d1b8c87-cd8d-d1dc-94f6-82f26e5e8a3f@nextfour.com> From: "Han, Nandor (GE Healthcare)" Message-ID: <63b6065f-bccf-009b-3b1d-247cd852daff@ge.com> Date: Thu, 13 Oct 2016 08:25:16 +0300 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 In-Reply-To: <7d1b8c87-cd8d-d1dc-94f6-82f26e5e8a3f@nextfour.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-10-13_02:,, signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1609300000 definitions=main-1610130091 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 642 Lines: 28 On 12/10/2016 16:25, Mika Penttilä wrote: > Hi! > > Bisected that commit 5881826 - " dmaengine: imx-sdma - update the residue calculation for cyclic channels" is first bad commit to cause audio regression on imx6q, sgtl5000 codec. It causes audible disturbing background noise when playing wavs. > > Unfortunately, reverting only 5881826 causes uarts to fail, so another fix is needed. > > Thanks, > > Mika > > > > > Hi Mika, Thanks for info. I have already posted a patch that will fix this issue. https://lkml.org/lkml/2016/10/11/319 It was already tested on imx6 and imx53. Let me know how it works. -- Regards, Nandor