From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754969Ab3ADCsE (ORCPT ); Thu, 3 Jan 2013 21:48:04 -0500 Received: from rtits2.realtek.com ([60.250.210.242]:55375 "EHLO rtits2.realtek.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753868Ab3ADCsB (ORCPT ); Thu, 3 Jan 2013 21:48:01 -0500 X-SpamFilter-By: BOX Solutions SpamTrap 5.19 with qID r042kMQq006942, This message is released by code: ctaloc0852 Message-ID: <50E6427E.1050809@realsil.com.cn> Date: Fri, 4 Jan 2013 10:46:22 +0800 From: wwang User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: Dan Carpenter CC: "cjb@laptop.org" , "sameo@linux.intel.com" , "arnd@arndb.de" , "oakad@yahoo.com" , "gregkh@linuxfoundation.org" , "linux-mmc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "bp@alien8.de" , "devel@linuxdriverproject.org" Subject: Re: [PATCH v3 3/8] MFD:rtsx: Declare that the DMA address limitationis32bit explicitly References: <20130103122559.GF7247@mwanda> In-Reply-To: <20130103122559.GF7247@mwanda> Content-Type: text/plain; charset="GB2312" Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 于 2013年01月03日 20:25, Dan Carpenter 写道: > On Fri, Dec 28, 2012 at 10:41:28AM +0800, wei_wang@realsil.com.cn wrote: >> From: Wei WANG >> >> Realtek PCIe card reader only supports 32bit DMA >> > Is this a bugfix? If so what does the bug look like? > > regards, > dan carpenter > Hi Dan: No, this is not a bugfix. In default, the kernel will allocate 32bit address for DMA. This declaration can improve the readability. BR, wei wang