Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752777Ab0HZJxo (ORCPT ); Thu, 26 Aug 2010 05:53:44 -0400 Received: from sh.osrg.net ([192.16.179.4]:40098 "EHLO sh.osrg.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752346Ab0HZJxk (ORCPT ); Thu, 26 Aug 2010 05:53:40 -0400 Date: Thu, 26 Aug 2010 18:51:48 +0900 To: g.liakhovetski@gmx.de Cc: fujita.tomonori@lab.ntt.co.jp, mitov@issp.bas.bg, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, akpm@linux-foundation.org, linux-arm-kernel@lists.infradead.org, linux-sh@vger.kernel.org, u.kleine-koenig@pengutronix.de, philippe.retornaz@epfl.ch, gregkh@suse.de, jkrzyszt@tis.icnet.pl Subject: Re: [RFC][PATCH] add dma_reserve_coherent_memory()/dma_free_reserved_memory() API From: FUJITA Tomonori In-Reply-To: References: <20100826182915S.fujita.tomonori@lab.ntt.co.jp> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: <20100826185102I.fujita.tomonori@lab.ntt.co.jp> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-3.0 (sh.osrg.net [192.16.179.4]); Thu, 26 Aug 2010 18:51:50 +0900 (JST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1122 Lines: 22 On Thu, 26 Aug 2010 11:45:58 +0200 (CEST) Guennadi Liakhovetski wrote: > On Thu, 26 Aug 2010, FUJITA Tomonori wrote: > > > Why can't you revert a commit that causes the regression? > > See this reply, and the complete thread too. > > http://marc.info/?l=linux-sh&m=128130485208262&w=2 > > > The related DMA API wasn't changed in 2.6.36-rc1. The DMA API is not > > responsible for the regression. And the patchset even exnteds the > > definition of the DMA API (dma_declare_coherent_memory). Such change > > shouldn't applied after rc1. I think that DMA-API.txt says that > > dma_declare_coherent_memory() handles coherent memory for a particular > > device. It's not for the API that reserves coherent memory that can be > > used for any device for a single device. > > Anyway, we need a way to fix the regression. Needs to find a different way. -- 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/