Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932127AbVLPGvp (ORCPT ); Fri, 16 Dec 2005 01:51:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932141AbVLPGvp (ORCPT ); Fri, 16 Dec 2005 01:51:45 -0500 Received: from mail.kroah.org ([69.55.234.183]:7143 "EHLO perch.kroah.org") by vger.kernel.org with ESMTP id S932127AbVLPGvo (ORCPT ); Fri, 16 Dec 2005 01:51:44 -0500 Date: Thu, 15 Dec 2005 21:17:01 -0800 From: Greg KH To: Andy Isaacson Cc: Vitaly Wool , David Brownell , spi-devel-general@lists.sourceforge.net, linux-kernel@vger.kernel.org, dpervushin@gmail.com, akpm@osdl.org, basicmark@yahoo.com, komal_shah802003@yahoo.com, stephen@streetfiresound.com, Joachim_Jaeger@digi.com Subject: Re: [spi-devel-general] Re: [PATCH/RFC] SPI: add DMAUNSAFE analog Message-ID: <20051216051701.GA27796@kroah.com> References: <20051215223322.GA8578@kroah.com> <20051216033459.GA5460@hexapodia.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20051216033459.GA5460@hexapodia.org> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 715 Lines: 19 On Thu, Dec 15, 2005 at 07:34:59PM -0800, Andy Isaacson wrote: > Now one could argue that this design is broken (requiring a slow serial > bus access to ack an irq means that you end up with very high-latency > interrupt handlers) but it's my impression that such designs are not > unheard of in the embedded world. Then you just atomically allocate a buffer like all of the current kernel drivers do :) Come on people, this really isn't an issue... thanks, greg k-h - 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/