From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from www1246.sakura.ne.jp ([219.94.162.56]:59888 "EHLO www1246.sakura.ne.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757168AbcJYCHG (ORCPT ); Mon, 24 Oct 2016 22:07:06 -0400 Subject: Re: The failure summary report of GEN2 for linux stable v4.8 To: Geert Uytterhoeven References: <57A46D20.7040106@jinso.co.jp> <57C9764F.2070802@jinso.co.jp> <9d9a647b-d75f-e89a-2d4d-55e409ccabae@jinso.co.jp> <580620CD.50703@sang-engineering.com> <125b4831-cbdf-f8e1-da97-8ea9cf458c22@jinso.co.jp> Cc: Wolfram Sang , duclm , Ryusuke Sakato , Kuninori Morimoto , Magnus Damm , Geert Uytterhoeven , =?UTF-8?B?56iy5ZCJ?= , Yoshihiro Shimoda , =?UTF-8?B?RHVuZ++8muS6uuOCvQ==?= , Cao Minh Hiep , Laurent Pinchart , Simon Horman , Linux-Renesas , =?UTF-8?Q?Niklas_S=c3=b6derlund?= From: Xuan Truong Nguyen Message-ID: <7868deaa-3310-8a73-5d12-2f66b3b584a1@jinso.co.jp> Date: Tue, 25 Oct 2016 11:07:00 +0900 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-renesas-soc-owner@vger.kernel.org List-ID: Hi Geert > That looks like a race condition between timeout handling and actual completion > of the DMA? Sorry, I don't know exactly what you mean. We use the baudrate of 38400 for all. (ttySC0, ttySC1,ttyUSB0,ttyUSB1). The transfer works normally for a while before the warning message is output. Thanks and best regards JINSO/Truong