From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756552AbYIROtn (ORCPT ); Thu, 18 Sep 2008 10:49:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754222AbYIROte (ORCPT ); Thu, 18 Sep 2008 10:49:34 -0400 Received: from de01egw02.freescale.net ([192.88.165.103]:34176 "EHLO de01egw02.freescale.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753701AbYIROtd (ORCPT ); Thu, 18 Sep 2008 10:49:33 -0400 Message-ID: <48D26A74.4030104@freescale.com> Date: Thu, 18 Sep 2008 09:49:24 -0500 From: Timur Tabi User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.8.1.16) Gecko/20080702 SeaMonkey/1.1.11 MIME-Version: 1.0 To: Haavard Skinnemoen CC: Dan Williams , lkml Subject: Re: dmaengine.c: question about device_alloc_chan_resources References: <48D02589.8070601@freescale.com> <20080918162826.3a9d9429@hskinnemo-gx745.norway.atmel.com> <48D2664D.7040204@freescale.com> <20080918164535.5e9f77a8@hskinnemo-gx745.norway.atmel.com> In-Reply-To: <20080918164535.5e9f77a8@hskinnemo-gx745.norway.atmel.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Haavard Skinnemoen wrote: > I guess so. What would be even more simple is to simply prevent other > clients from taking a channel once someone has acked it, which would be > perfect for my purposes, but perhaps not everyone else's... I'm not clear on how your driver works, but doesn't it run continuous tests on all channels all the time? If so, wouldn't your proposal prevent other drivers from ever getting a DMA channel? -- Timur Tabi Linux kernel developer at Freescale