Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753621AbZFAIaD (ORCPT ); Mon, 1 Jun 2009 04:30:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751480AbZFAI3x (ORCPT ); Mon, 1 Jun 2009 04:29:53 -0400 Received: from caramon.arm.linux.org.uk ([78.32.30.218]:32792 "EHLO caramon.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751946AbZFAI3x (ORCPT ); Mon, 1 Jun 2009 04:29:53 -0400 Date: Mon, 1 Jun 2009 09:29:43 +0100 From: Russell King To: FUJITA Tomonori Cc: arnd@arndb.de, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Subject: Re: [PATCH] asm-generic: add dma-mapping-linear.h Message-ID: <20090601082943.GA5550@flint.arm.linux.org.uk> Mail-Followup-To: FUJITA Tomonori , arnd@arndb.de, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org References: <200905282104.55818.arnd@arndb.de> <20090601130319A.fujita.tomonori@lab.ntt.co.jp> <20090601075114.GA29107@flint.arm.linux.org.uk> <20090601170847V.fujita.tomonori@lab.ntt.co.jp> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090601170847V.fujita.tomonori@lab.ntt.co.jp> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 840 Lines: 22 On Mon, Jun 01, 2009 at 05:08:09PM +0900, FUJITA Tomonori wrote: > This adds a version of the dma-mapping API to asm-generic that can be > used by most architectures that only need a linear mapping. It depends what is meant by "linear mapping". If that's just a way of saying "all that needs to be done for the DMA streaming APIs is to flush the cache" then the vast majority of ARMs fall into that category. The DMA bounce code is a broken design concept that really needs to be put to death. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: -- 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/