Re: [RFC][PATCH 0/2] media: fix polling not to wait if a buffer is available

[김승우 <sw0312.kim@samsung.com>]

Ping this patch-set.

The first patch for vb2 was acked by Marek.

any suggestion for the second patch?

Regards,
- Seung-Woo Kim

On 2013년 04월 01일 15:40, Seung-Woo Kim wrote:
> As poll behavior described in following link, polling needs to just return if
> already some buffer is in done list.
> Link: http://www.spinics.net/lists/linux-media/msg34759.html
> 
> But in current vb2 and v4l2_m2m, poll function always calls poll_wait(), so it
> needs to wait until next vb2_buffer_done() or queue is cancelled.
> 
> So I add check routine for done_list before calling poll_wait().
> But I'm not sure that locking for done_lock of queue is also needed in this
> case or not because done_list of queue is checked without locking in some
> other parts of vb2.
> 
> Seung-Woo Kim (2):
>   media: vb2: return for polling if a buffer is available
>   media: v4l2-mem2mem: return for polling if a buffer is available
> 
>  drivers/media/v4l2-core/v4l2-mem2mem.c   |    6 ++++--
>  drivers/media/v4l2-core/videobuf2-core.c |    3 ++-
>  2 files changed, 6 insertions(+), 3 deletions(-)
> 

-- 
Seung-Woo Kim
Samsung Software R&D Center
--