[PATCH v2 0/3] drm/cma: use prime helpers instead GEM CMA specific dma_buf functionality

[Dave Airlie]

On Thu, Jul 4, 2013 at 5:14 PM, Joonyoung Shim <jy0922.shim at samsung.com> wrote:
> On 07/04/2013 07:11 AM, Laurent Pinchart wrote:
>>
>> Hi Joonyoung,
>>
>> Thank you for the patches.
>>
>> On Friday 28 June 2013 14:24:43 Joonyoung Shim wrote:
>>>
>>> Hello,
>>>
>>> This is the second version patchset.
>>>
>>> GEM CMA supports dma_buf but it needs GEM CMA specific functionality for
>>> dma_buf. We can use prime helpers for dma_buf by commit
>>> 89177644a7b6306e6084a89eab7e290f4bfef397 "drm: add prime helpers", so
>>> this patchset is to replace from using GEM CMA specific functions to
>>> using prime helpers.
>>>
>>>
>>> To Laurent,
>>>
>>> It is merged a patch to cache mapping from DRM Prime, can this patchset
>>> get your ack?
>>
>> There you go (and sorry for the late reply)
>>
>> Acked-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
>>
>> By the way, between the initial version of the GEM CMA PRIME patch and the
>> version that got merged in v3.10, commit
>> 011c2282c74db120f01a8414edc66c3f217f5511 ("drm: prime: fix refcounting on
>> the
>> dmabuf import error path") was introduced. The GEM CMA PRIME code in v3.10
>> thus has a refcounting bug :-(
>>
>> Should this patch set go to -stable, or should we cook up a special fix ?
>
>
> I'm not sure it's better to choose which way.
>
> Dave, how we should do about that problem?

I think a special fix for stable once we get these merged to Linus.

Dave.