linux-kernel - Re: [PATCH] Documentation/dma-buf-sharing.txt: update API descriptions

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Message-ID: <CAErSpo4HTpspc1GWh=eQNKCkmBRxKkMehtyh7Z8xpgrN5E+6mQ@mail.gmail.com>
Date:	Tue, 20 May 2014 22:39:52 -0600
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Sumit Semwal <sumit.semwal@...aro.org>
Cc:	Gioh Kim <gioh.kim@....com>, Randy Dunlap <rdunlap@...radead.org>,
	linux-media@...r.kernel.org,
	DRI mailing list <dri-devel@...ts.freedesktop.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	이건호 <gunho.lee@....com>
Subject: Re: [PATCH] Documentation/dma-buf-sharing.txt: update API descriptions

On Tue, May 20, 2014 at 9:43 PM, Sumit Semwal <sumit.semwal@...aro.org> wrote:
> Hi Bjorn,
>
> On 21 May 2014 04:50, Bjorn Helgaas <bhelgaas@...gle.com> wrote:
>> On Wed, May 14, 2014 at 08:49:43AM +0900, Gioh Kim wrote:
>>> Update some descriptions for API arguments and descriptions.
>>>
>>> Signed-off-by: Gioh Kim <gioh.kim@....com>
>>
>> I applied this to my "dma-api" branch for v3.16, thanks!
> As always, I would queue this up for my dma-buf pull request, along
> with other dma-buf changes.

OK, I dropped this one.

>>> ---
>>>  Documentation/dma-buf-sharing.txt |   14 ++++++++------
>>>  1 file changed, 8 insertions(+), 6 deletions(-)
>>>
>>> diff --git a/Documentation/dma-buf-sharing.txt b/Documentation/dma-buf-sharing.txt
>>> index 505e711..aadd901 100644
>>> --- a/Documentation/dma-buf-sharing.txt
>>> +++ b/Documentation/dma-buf-sharing.txt
>>> @@ -56,10 +56,10 @@ The dma_buf buffer sharing API usage contains the following steps:
>>>                                    size_t size, int flags,
>>>                                    const char *exp_name)
>>>
>>> -   If this succeeds, dma_buf_export allocates a dma_buf structure, and returns a
>>> -   pointer to the same. It also associates an anonymous file with this buffer,
>>> -   so it can be exported. On failure to allocate the dma_buf object, it returns
>>> -   NULL.
>>> +   If this succeeds, dma_buf_export_named allocates a dma_buf structure, and
>>> +   returns a pointer to the same. It also associates an anonymous file with this
>>> +   buffer, so it can be exported. On failure to allocate the dma_buf object,
>>> +   it returns NULL.
>>>
>>>     'exp_name' is the name of exporter - to facilitate information while
>>>     debugging.
>>> @@ -76,7 +76,7 @@ The dma_buf buffer sharing API usage contains the following steps:
>>>     drivers and/or processes.
>>>
>>>     Interface:
>>> -      int dma_buf_fd(struct dma_buf *dmabuf)
>>> +      int dma_buf_fd(struct dma_buf *dmabuf, int flags)
>>>
>>>     This API installs an fd for the anonymous file associated with this buffer;
>>>     returns either 'fd', or error.
>>> @@ -157,7 +157,9 @@ to request use of buffer for allocation.
>>>     "dma_buf->ops->" indirection from the users of this interface.
>>>
>>>     In struct dma_buf_ops, unmap_dma_buf is defined as
>>> -      void (*unmap_dma_buf)(struct dma_buf_attachment *, struct sg_table *);
>>> +      void (*unmap_dma_buf)(struct dma_buf_attachment *,
>>> +                            struct sg_table *,
>>> +                            enum dma_data_direction);
>>>
>>>     unmap_dma_buf signifies the end-of-DMA for the attachment provided. Like
>>>     map_dma_buf, this API also must be implemented by the exporter.
>>> --
>>> 1.7.9.5
>>>
>>> --
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>
>
>
> --
> Thanks and regards,
>
> Sumit Semwal
> Graphics Engineer - Graphics working group
> Linaro.org │ Open source software for ARM SoCs
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