On 03/09/2018 09:49 AM, Gustavo Padovan wrote:
> From: Gustavo Padovan <gustavo.pado...@collabora.com>
>
> Drivers that use videobuf2 are capable of using fences and
> should report that to userspace.
>
> The coding style is following what each drivers was already
> doing.
I think this can be simplified for most drivers: you can set this
flag in the v4l_querycap function if vdev->queue is not NULL or if
m2m_ctx is set in struct v4l2_fh.
I believe all non-m2m drivers that use vb2 set vdev->queue. But not
all m2m drivers will set m2m_ctx, so that will need to be checked.
In other words, this way you only need to modify m2m drivers that
do not set m2m_ctx.
Regards,
Hans
