Re: [PATCH v2 0/4] dma-mapping: Define dma_{alloc,free}_attrs() forall archs

From: Damian Hobson-Garcia
Date: Thu May 23 2013 - 22:52:27 EST

On 2013/05/23 18:47, Catalin Marinas wrote:
> On Thu, May 23, 2013 at 03:47:13AM +0100, Damian Hobson-Garcia wrote:
>> Hi Catalin,
>> On 2013/05/22 18:47, Catalin Marinas wrote:
>>> On Wed, May 22, 2013 at 03:37:17AM +0100, Damian Hobson-Garcia wrote:
>>>> Hello,
>>>> On 2013/04/30 12:01, Damian Hobson-Garcia wrote:
>>>>> Most architectures that define CONFIG_HAVE_DMA=y, have implementations for
>>>>> both dma_alloc_attrs() and dma_free_attrs(). All achitectures that do
>>>>> not define CONFIG_HAVE_DMA also have both of these definitions provided by
>>>>> dma-mapping-broken.h.
>>> BTW, shouldn't this be called CONFIG_HAVE_DMA_ATTRS?
>> CONFIG_HAVE_DMA_ATTRS is currently used to enable the functions to
>> set/get the DMA attribute values. Poking through the headers, it looks
>> like the struct dma_attrs is defined regardless of the
>> CONFIG_HAVE_DMA_ATTRS setting, so in that respect
>> we always seem to "have" DMA attributes (if we have DMA), but they may
>> not always be meaningful (ie. set to some value).
> My point was about the commit log - grep'ing the kernel for
> CONFIG_HAVE_DMA did not return anything.

Oh yes, my mistake. It should be CONFIG_HAS_DMA instead of
CONFIG_HAVE_DMA. I'll update it.


Damian Hobson-Garcia
IGEL Co.,Ltd
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