Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752749Ab3CWX5n (ORCPT ); Sat, 23 Mar 2013 19:57:43 -0400 Received: from shards.monkeyblade.net ([149.20.54.216]:35437 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752362Ab3CWX5l (ORCPT ); Sat, 23 Mar 2013 19:57:41 -0400 Date: Sat, 23 Mar 2013 19:57:40 -0400 (EDT) Message-Id: <20130323.195740.2108147521543354261.davem@davemloft.net> To: khc@pm.waw.pl Cc: netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, c.aeschlimann@acn-group.ch Subject: Re: [PATCH] Fix IXP4xx coherent allocations From: David Miller In-Reply-To: References: X-Mailer: Mew version 6.5 on Emacs 24.1 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=euc-kr Content-Transfer-Encoding: 8bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.7 (shards.monkeyblade.net [0.0.0.0]); Sat, 23 Mar 2013 16:57:41 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 796 Lines: 20 From: Krzysztof Halasa Date: Sat, 23 Mar 2013 20:35:46 +0100 > ARM core code currently requires coherent DMA mask to be set. Make sure > we limit PCI devices to 64 MiB while allowing on-chip devices to access > the whole 4 GiB address space. > > This fixes a v3.7+ regression which broke IXP4xx built-in network devices. > > Signed-off-by: Krzysztof Ha??asa This requirement is not reasonable. The DMA API documentation clearly states what the default must be, and what drivers are guarenteed will be the default. -- 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/