Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753943AbaKEILp (ORCPT ); Wed, 5 Nov 2014 03:11:45 -0500 Received: from www.linutronix.de ([62.245.132.108]:35307 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753381AbaKEILk (ORCPT ); Wed, 5 Nov 2014 03:11:40 -0500 Message-ID: <5459DBB7.1090702@linutronix.de> Date: Wed, 05 Nov 2014 09:11:35 +0100 From: Sebastian Andrzej Siewior User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.2.0 MIME-Version: 1.0 To: Lennart Sorensen CC: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, tony@atomide.com, balbi@ti.com, gregkh@linuxfoundation.org, devicetree@vger.kernel.org Subject: Re: [PATCH 11/13] arm: dts: dra7: add DMA properties for UART References: <1412014009-13315-1-git-send-email-bigeasy@linutronix.de> <1412014009-13315-12-git-send-email-bigeasy@linutronix.de> <20141104170233.GB24112@csclub.uwaterloo.ca> <5459079D.7080703@linutronix.de> <20141104172117.GC24112@csclub.uwaterloo.ca> <20141104183315.GD24112@csclub.uwaterloo.ca> <20141104210315.GF24112@csclub.uwaterloo.ca> <20141105011506.GG24112@csclub.uwaterloo.ca> In-Reply-To: <20141105011506.GG24112@csclub.uwaterloo.ca> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/05/2014 02:15 AM, Lennart Sorensen wrote: > Well 4 hours running with multiple reboots (our testsuite reboots every > 30 minutes to test the watchdog). So far it has only lost 70 bytes out > of 40MB of data sent between uart7 and uart8 (and we are pretty sure > the serial test has a small bug that causes a few bytes to be lost right > after a reboot sometimes). > > The reason I am even trying the new driver today is that we were seeing > soft lockups on the CPU whenever the serial ports were being tested, > usually in less than 5 minutes, so 4 hours without a lockup is a good > sign. No idea what might be wrong with the old omap serial driver, but > it seems something is (unless of course we managed to break it somehow > when we tried to solve its habit of dropping characters). Okay. No DMA but the basic part seems to work for you. Thanks for testing. Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/