linux-kernel - Re: [PATCH v3 3/8] MFD:rtsx: Declare that the DMA address limitationis32bit explicitly

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Message-ID: <50E6427E.1050809@realsil.com.cn>
Date:	Fri, 4 Jan 2013 10:46:22 +0800
From:	wwang <wei_wang@...lsil.com.cn>
To:	Dan Carpenter <dan.carpenter@...cle.com>
CC:	"cjb@...top.org" <cjb@...top.org>,
	"sameo@...ux.intel.com" <sameo@...ux.intel.com>,
	"arnd@...db.de" <arnd@...db.de>,
	"oakad@...oo.com" <oakad@...oo.com>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"bp@...en8.de" <bp@...en8.de>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>
Subject: Re: [PATCH v3 3/8] MFD:rtsx: Declare that the DMA address limitationis32bit explicitly

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@...lsil.com.cn wrote:
>> From: Wei WANG <wei_wang@...lsil.com.cn>
>>
>> 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
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