From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757461Ab2AXU72 (ORCPT ); Tue, 24 Jan 2012 15:59:28 -0500 Received: from hqemgate03.nvidia.com ([216.228.121.140]:6271 "EHLO hqemgate03.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756543Ab2AXU70 convert rfc822-to-8bit (ORCPT ); Tue, 24 Jan 2012 15:59:26 -0500 X-PGP-Universal: processed; by hqnvupgp06.nvidia.com on Tue, 24 Jan 2012 12:57:22 -0800 From: Stephen Warren To: Laxman Dewangan , "ccross@android.com" , "olof@lixom.net" , "linux@arm.linux.org.uk" CC: "linux-tegra@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" Date: Tue, 24 Jan 2012 12:57:21 -0800 Subject: RE: [PATCH V1] arm: tegra: dma: not required to move requestor when stopping. Thread-Topic: [PATCH V1] arm: tegra: dma: not required to move requestor when stopping. Thread-Index: Aczab8bn3SNBNliHQyWy3sbXlw4ZvwAaqrjg Message-ID: <74CDBE0F657A3D45AFBB94109FB122FF178CB81E5F@HQMAIL01.nvidia.com> References: <1327392649-27605-1-git-send-email-ldewangan@nvidia.com> In-Reply-To: <1327392649-27605-1-git-send-email-ldewangan@nvidia.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Laxman Dewangan wrote at Tuesday, January 24, 2012 1:11 AM: > It is not require to move the requestor of dma to INVALID > option before stopping dma. > > Signed-off-by: Laxman Dewangan Acked-by: Stephen Warren Tested-by: Stephen Warren I know that Laxman has checked with the HW engineers, and they see no reason to do this. I was originally worried about hung FIFOs preventing an in-progress DMA from completely without the removed code, but according to HW, that isn't a concern. -- nvpublic