From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161309AbcBQLNK (ORCPT ); Wed, 17 Feb 2016 06:13:10 -0500 Received: from mailout1.samsung.com ([203.254.224.24]:45123 "EHLO mailout1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161108AbcBQLNI (ORCPT ); Wed, 17 Feb 2016 06:13:08 -0500 X-AuditID: cbfee61b-f793c6d00000236c-62-56c455c0fb22 From: Bartlomiej Zolnierkiewicz To: Vinod Koul Cc: Dinh Nguyen , shawn.lin@rockchips.com, Addy Ke , boojin.kim@samsung.com, wxt@rock-chips.com, dmaengine@vger.kernel.org, olof Johansson , "linux-kernel@vger.kernel.org" Subject: Re: commit 271e1b86e691 is breaking DMA uart on SoCFPGA Date: Wed, 17 Feb 2016 12:12:05 +0100 Message-id: <3095560.0L3m2DPBqY@amdc1976> User-Agent: KMail/4.13.3 (Linux/3.13.0-74-generic; KDE/4.13.3; x86_64; ; ) In-reply-to: <20160211085748.GW19598@localhost> References: <56BBB201.7060004@opensource.altera.com> <20160211085748.GW19598@localhost> MIME-version: 1.0 Content-transfer-encoding: 7Bit Content-type: text/plain; charset=us-ascii X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrILMWRmVeSWpSXmKPExsVy+t9jQd2DoUfCDGb0MFss+/+dyeLNyT9s Fqs+rWG2WD31L6vF5V1z2CxOXf/MZrH0cLnFy779LBbtzcuYHDg9Fu95yeRx5UQTq0f/tUns Hn9n7WfxeD75IYtH35ZVjB6fN8kFsEdx2aSk5mSWpRbp2yVwZXzYMZet4Dp3xeVDW5gbGFdw djFycEgImEg8uafXxcgJZIpJXLi3nq2LkYtDSGAWo8SpBWugnK+MEh9O/GEHqWITsJKY2L6K EcQWEVCV2PKzgxGkiFlgBpPE7+tn2EGmCgs4SKz+6AVSwwJUs/zmWbBeXgFNiRtLj7GB2KIC XhI77uxmArE5BfQlvk25wApiCwlESkw+s5UJol5Q4sfkeywgNrOAvMS+/VNZIWwtifU7jzNN YAQ6E6FsFpKyWUjKFjAyr2KUSC1ILihOSs81ykst1ytOzC0uzUvXS87P3cQIjohn0jsYD+9y P8QowMGoxMO7IutwmBBrYllxZe4hRgkOZiUR3r7gI2FCvCmJlVWpRfnxRaU5qcWHGKU5WJTE eR//XxcmJJCeWJKanZpakFoEk2Xi4JRqYNRwZ536sueyUeu7s2KL0/V/Lt6eyjdhjc+eRTF7 NAu0LMRqvE6LyR708sra57jcPGjxNT4286vOgp/Vl6T/YXu5UXfF16+qfpWOWbaWapu8bI+d 5mmqEY1P2ZfM9eUXG6u388dn2o2b6y1TPD6oJxUe1AtZ/vni7d8aDc4ui92jJQON7KKfKrEU ZyQaajEXFScCAOlJmvaEAgAA Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Thursday, February 11, 2016 02:27:51 PM Vinod Koul wrote: > On Wed, Feb 10, 2016 at 03:56:17PM -0600, Dinh Nguyen wrote: > > Hi Vinod, > > > > It appears that commit 271e1b86e691 "dmaengine: pl330: add quirk for > > broken no flushp" is breaking uart dma on SoCFPGA. This commit is in > > linux-next(next-20160210). > > > > Doing a bisect pointed to commit 271e1b86e691, but I had to also revert > > the following commits (86a8ce7d4103 "dmaengine: pl330: add max burst for > > dmaengine") and (848e9776fee4 "dmaengine: pl330: support burst mode for > > dev-to-mem and mem-to-dev transmit") as well because the build would > > fail if I only revert 271e1b86e691. > > > > The SoCFPGA platform is being tested on Olof's board farm and is failing > > multi_v7_defconfig build because the PL330 DMA is enabled in this defconfig. > > > > After doing reverts of those 3 commits, the socfpga platform is able > > boot completely again with multi_v7_defconfig. > > Okay I am removing this topic from next. Also I can drop the series unless > someone sends me a fix in couple of days.. I've noticed that these commits also break UART DMA on Samsung Exynos4412 SoCs (I got similar bisection results as Dinh when I've noticed issue with next-20160211 kernel). Caesar, please keep me on Cc: for potential fix(es) / revised patches (I'll be happy to test them). Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics